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For small orders, phone 1-800-835-8769.
General Description
The MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
miniature, low-cost, low-noise upconverter mixers are
designed for low-voltage operation and are ideal for
use in portable consumer equipment. Signals at the IF
input port are mixed with signals at the local oscillator
(LO) port using a double-balanced mixer. These
upconverter mixers operate with IF input frequencies
between 40MHz and 500MHz, and upconvert to output
frequencies as high as 2.5GHz.
These devices offer a wide range of supply currents and
output intercept levels to optimize system performance.
Supply current is essentially constant over the specified
supply voltage range. Additionally, when the devices are
in a typical configuration with VSHDN = 0, a shutdown
mode reduces the supply current to less than 1µA.
The MAX2660/MAX2661/MAX2663/MAX2671 are
offered in the space-saving 6-pin SOT23 package. For
applications requiring balanced IF ports, choose the
MAX2673 in the 8-pin µMAX package.
Applications
400MHz/900MHz/2.4GHz ISM
Hand-Held Radios
Wireless Local Area Networks (WLANs)
IEEE 802.11 and Wireless Data
Personal Communications Systems (PCS)
Cellular and Cordless Phones
Features
♦RF Output Frequencies: 400MHz to 2.5GHz
♦Low Noise Figure: 9.3dB (900MHz, MAX2671)
♦+2.7V to +5.5V Single Supply
♦High Output Intercept Point (OIP3)
5.9dBm at 4.8mA (MAX2660)
7.1dBm at 8.3mA (MAX2661)
0.7dBm at 3.0mA (MAX2663)
9.6dBm at 11.8mA (MAX2671)
7.6dBm at 20.5mA (MAX2673)
♦1µA Shutdown Mode
♦Ultra-Small Surface-Mount Packaging
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
________________________________________________________________ Maxim Integrated Products 1
19-1382; Rev 1; 9/99
PART
MAX2660EUT-T
MAX2661EUT-T
MAX2663EUT-T -40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP.
RANGE
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
EVALUATION KIT MANUALS
FOLLOW DATA SHEET
Typical Operating Circuits and Functional Diagram appear at
end of data sheet.
Ordering Information
TOP
MARK
AAAF
AAAG
AAAL
MAX2671EUT-T -40°C to +85°C 6 SOT23-6 AAAJ
MAX2673EUA -40°C to +85°C 8 µMAX —
PART ICC
(mA)
OUTPUT IP3 (dBm)
AT 900MHz
GAIN (dB)
AT 2450MHz LO BUFFER SINGLE-ENDED OR
DIFFERENTIAL IF PACKAGE
MAX2660 4.8 5.9 4.6 No Single Ended 6 SOT23
MAX2661 8.3 7.1 8.2 No Single Ended 6 SOT23
MAX2663 3.0 0.7 1.4 No Single Ended 6 SOT23
MAX2671 11.8 9.6 8.9 Yes Single Ended 6 SOT23
MAX2673 20.5 7.6 8.6 Yes Differential 8 µMAX
Selector Guide
Pin Configurations
GND
RFOUTIFIN
16SHDN
5 VCC
LO
MAX2660
MAX2661
MAX2663
MAX2671
SOT23-6
TOP VIEW
2
34
GND
RFOUTVCC
1
2
8
7
IFIN+
IFIN-GND
SHDN
LO
µMAX
3
4
6
5
MAX2673
TBD
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +5.5V, SHDN = +2V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC = SHDN = +3.0V,
TA= +25°C. Minimum and maximum values are guaranteed over temperature by design and characterization.)
AC ELECTRICAL CHARACTERISTICS
(VCC = SHDN = +3.0V, TA= +25°C, unless otherwise noted. Minimum and maximum values are guaranteed by design and
characterization.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC to GND...........................................................-0.3V to +6.0V
IFIN_ Input Power (50Ωsource).....................................+10dBm
LO Input Power (50Ωsource) ........................................+10dBm
SHDN, RFOUT, IFIN_, LO to GND..............-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
6-Pin SOT23-6 (derate 8.7mW/°C above +70°C) ........696mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX2663
MAX2661
MAX2660
SHDN = 0.5V, VCC = 3.6V to 5.5V
MAX2671
MAX2673
SHDN = 0.5V, VCC = 2.7V to 3.6V
CONDITIONS
3.0 4.1
8.3 11.3
4.8 6.6
ICC
Operating Supply Current
(LO and IFIN_ Unconnected)
-5 0.2 5IIN
Shutdown Input Bias Current
0 0.5VIL
Shutdown Input Voltage Low
2V
CC
VIH
Shutdown Input Voltage High
15
11.8 16.6
20.5 26.8
5
MIN TYP MAXSYMBOLPARAMETER
µA
V
V
mA
UNITS
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 45MHz, fLO = 445MHz, fRF = 400MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz,
TA= -40°C to +85°C
CONDITIONS
7.0
7.0
5.7
5.9
Output Third-Order
Intercept
3.9 5.9 8.1
Conversion Gain
4.6
±1.2 ±1.6
Gain Variation Over
Temperature
MIN TYP MAXPARAMETER
dBm
dB
dB
UNITS
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz 4.1
MAX2660 (PLO = -5dBm, PIFIN = -30dBm, Circuit of Figure 1)
µAICC
Shutdown Supply Current
SHDN = GND, MAX2660 0.1
SHDN = GND, MAX2673 0.8
SHDN = GND, MAX2661 0.2
SHDN = GND, MAX2663 0.1
SHDN = GND, MAX2671 0.2
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
_______________________________________________________________________________________ 3
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz,
TA= -40°C to +85°C
From SHDN low to ICC < 100µA
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
(Note 2)
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz (Note 1)
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
f = 600MHz to 2500MHz, 50Ωsource impedance
fIF = 45MHz, fLO = 445MHz, fRF = 400MHz
CONDITIONS
11.6
9.8
Noise Figure
(Single Sideband)
-6.2
-7.2
-6.0
Output 1dB
Compression Point
7.3
6.0
7.1
Output Third-Order Intercept
±1.2 ±1.5
Gain Variation Over
Temperature
8.2
Conversion Gain 7.0 8.5 10.2
10.7
10.2
-10.8
-8.4
Output 1dB
Compression Point
2
Turn-Off Time
2
Turn-On Time
-70
Maximum Output Spurious
Emissions
-20.7
LO Emission from RF Port
-22.5
2.2
Maximum LO Input VSWR
MIN TYP MAXPARAMETER
From SHDN low to ICC < 100µA
(Note 2)
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz (Note 1)
f = 600MHz to 2500MHz, 50Ωsource impedance
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 350MHz, fLO = 2100MHz, fRF = 2450MHz
2
Turn-Off Time
2
Turn-On Time
-57.3
Maximum Output Spurious
Emissions
2.2
Maximum LO Input VSWR
-23.5
LO Emission from RF Port -21.6
-22.9
11.8
µs
µs
dBm
dBm
dB
dBm
dBm
dB
dB
µs
µs
dBm
dBm
dBm
UNITS
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 350MHz, fLO = 2100MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 970MHz, fRF = 1900MHz
-22.0
11.9
9.9
dB
Noise Figure
(Single Sideband) fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 11.8
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz -11.4
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = SHDN = +3.0V, TA= +25°C, unless otherwise noted. Minimum and maximum values are guaranteed by design and
characterization.)
MAX2660 (PLO = -5dBm, PIFIN = -30dBm, Circuit of Figure 1) (continued)
MAX2661 (PLO = -5dBm, PIFIN = -30dBm, Circuit of Figure 1)
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
4 _______________________________________________________________________________________
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz,
TA= -40°C to +85°C
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 45MHz, fLO = 445MHz, fRF = 400MHz
CONDITIONS
12.2
10.7
Noise Figure
(Single Sideband)
-14.3
-13.3
-12.3
Output 1dB
Compression Point
-2.8
-1.4
0.7
Output Third-Order Intercept
±1.1 ±1.8
Gain Variation Over
Temperature
1.4
Conversion Gain -0.1 2.1 4.2
3.4
2.0
MIN TYP MAXPARAMETER
From SHDN low to ICC < 100µA
(Note 2)
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz (Note 1)
f = 600MHz to 2500MHz, 50Ωsource impedance
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 350MHz, fLO = 2100MHz, fRF = 2450MHz
2
Turn-Off Time
2
Turn-On Time
-67
Maximum Output Spurious
Emissions
2.1
Maximum LO Input VSWR
-21.6
LO Emission from RF Port -21.0
-22.7
12.7
µs
µs
dBm
dBm
dB
dBm
dBm
dB
dB
UNITS
fIF = 45MHz, fLO = 445MHz, fRF = 400MHz 10.0
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz 11.2
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 6.7 9.3 11.9
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz 8.9
Conversion Gain dB
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz,
TA= -40°C to +85°C ±1.1 ±1.3
Gain Variation Over
Temperature dB
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz 9.6
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 8.3
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz 9.4
Output Third-Order Intercept dBm
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz -5.5
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz -6.4
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz -6.0
Output 1dB
Compression Point dBm
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = SHDN = +3.0V, TA= +25°C, unless otherwise noted. Minimum and maximum values are guaranteed by design and
characterization.)
MAX2663 (PLO = -5dBm, PIFIN = -30dBm, Circuit of Figure 1)
MAX2671 (PLO = -10dBm, PIFIN = -30dBm, Circuit of Figure 1)
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
_______________________________________________________________________________________ 5
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 45MHz, fLO = 445MHz, fRF = 400MHz 12.6
dB
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz 12.3
CONDITIONS
10.7
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 7.8 9.2 10.6
9.3
Noise Figure
(Single Sideband)
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz 8.6
Conversion Gain
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz,
TA= -40°C to +85°C ±1.0 ±1.4
Gain Variation Over
Temperature dB
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz 7.6
dBmfIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 5.9
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz 4.5
Output Third-Order Intercept
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz -2.1
dBmfIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz -5.9
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz -8.3
Output 1dB
Compression Point
MIN TYP MAXPARAMETER
From SHDN low to ICC < 100µA
(Note 2)
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz (Note 1)
f = 600MHz to 2500MHz, 50Ωsource impedance
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz
fIF = 350MHz, fLO = 2100MHz, fRF = 2450MHz
2
Turn-Off Time
2
Turn-On Time
-56
Maximum Output Spurious
Emissions
2.2
Maximum LO Input VSWR
-36.8
LO Emission from RF Port -35.7
-40.3
11.3
µs
µs
dBm
dBm
dBm
dB
UNITS
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz 9.7
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz 10.1
fIF = 350MHz, fLO = 2100MHz, fRF = 2450MHz 10.4
Noise Figure
(Single Sideband) dB
fIF = 70MHz, fLO = 970MHz, fRF = 900MHz -29.4
dBmfIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz -27.9
fIF = 240MHz, fLO = 2210MHz, fRF = 2450MHz -26.6
LO Emission from RF Port
f = 600MHz to 2500MHz, 50Ωsource impedance 2.2
fIF = 70MHz, fLO = 1830MHz, fRF = 1900MHz (Note 1) -59.7 dBm
(Note 2) 2
Maximum LO Input VSWR
µsTurn-On Time
Maximum Output Spurious
Emissions
From SHDN low to ICC < 100µA 2µsTurn-Off Time
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = SHDN = +3.0V, TA= +25°C, unless otherwise noted. Minimum and maximum values are guaranteed by design and
characterization.)
MAX2671 (PLO = -10dBm, PIFIN = -30dBm, Circuit of Figure 1) (continued)
MAX2673 (PLO = -10dBm, PIFIN_ = -30dBm, Circuit of Figure 2)
Note 1: Excluding LO harmonics and products of LO harmonics by first-order IF.
Note 2: From SHDN high to output within 1dB of final output power, fRF = 900MHz, fIF = 70MHz.
15
17
16
19
18
21
20
22
24
23
25
500 1000 1500 2000 2500
MAX2660
LO-to-RF AND RF-to-LO ISOLATION
vs. LO OR RF FREQUENCY
MAX2660-09
LO OR RF FREQUENCY (MHz)
ISOLATION (dB)
RF-to-LO ISOLATION
POWER INTO RF PORT = -25dBm
LO-to-RF ISOLATION
POWER INTO LO PORT = -5dBm
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
6 _______________________________________________________________________________________
3.0
4.0
3.5
5.0
4.5
5.5
6.0
2.50 3.50 4.003.00 4.50 5.00 5.50
MAX2660
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX2660-01
VCC (V)
ICC (mA)
TA = -40°C
TA = +25°C
TA = +85°C
0
3
2
1
4
5
6
7
8
9
10
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2660
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2660-02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
TA = -40°C
TA = +25°C
TA = +85°C
SHDN = GND
-10
-6
-8
0
-2
-4
2
4
8
6
10
01000500 1500 2000 2500 3000
MAX2660
CONVERSION GAIN vs. RF FREQUENCY
MAX2660-03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
5.5V
5.5V
5.5V
5.5V
2.7V
2.7V
2.7V
2.7V
400MHz
900MHz
1900MHz
2450MHz
RF MATCH
45MHz
70MHz
70MHz
240MHz
fIF
fRF = fLO - fIF
fRF = fLO - fIF
fRF = fLO + fIF
fRF = fLO + fIF
fRF
__________________________________________Typical Operating Characteristics
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
-2
0
-1
2
1
4
3
5
7
6
8
0 100 200 300 400 50050 150 250 350 450
MAX2660
CONVERSION GAIN vs. IF FREQUENCY
MAX2660-04
IF FREQUENCY (MHz)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
fIF = fLO - fRF
fIF = fRF - fLO
fIF = fRF - fLO
fIF
fRF = 1900MHz
fRF = 900MHz
fRF = 2450MHz
-15
-10
0
-5
5
10
-25 -15-20 -10 -5 0 5 10
MAX2660
CONVERSION GAIN vs. LO POWER
MAX2660-05
LO POWER (dBm)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 2450MHz
fRF = 1900MHz
fRF = 900MHz
-20
-16
-18
-12
-14
-8
-10
-6
-2
-4
0
300 1380840 1920 2460 3000
MAX2660
LO PORT RETURN LOSS vs. FREQUENCY
MAX2660-06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
0
100
50
150
350
300
450
400
250
200
500
0 100 200 300 400 500
MAX2660
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2660-07
IF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
-500
-200
-100
-300
-400
0
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
0
200
100
400
300
800
700
600
500
900
0 1000500 1500 2000 2500 3000
MAX2660
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2660-08
RF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
-1000
-500
-600
-700
-800
-900
-300
-400
-100
-200
IMAGINARY IMPEDANCE (Ω)
REAL
IMAGINARY
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
_______________________________________________________________________________________ 7
-50
-20
-30
-40
-10
0
10
-50 -30-40 -20 -10 0
MAX2660
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2660-10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 900MHz
fRF = 1900MHz fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
CONVERSION GAIN
OUTPUT POWER
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2661
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX2661toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = +85°C
TA = +25°C
TA = -40°C
0
3
2
1
4
5
6
7
8
9
10
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2661
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2661toc02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
TA = +85°C
TA = +25°C
TA = -40°C
SHDN = GND
-4
0
-2
4
2
6
10
8
12
01000500 1500 2000 2500 3000
MAX2661
CONVERSION GAIN vs. RF FREQUENCY
MAX2661toc03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
VCC = 2.7V
VCC = 5.5V
400MHz
900MHz
1900MHz
2450MHz
RF MATCH
45MHz
70MHz
70MHz
240MHz
fIF
fRF = fLO - fIF
fRF = fLO - fIF
fRF = fLO + fIF
fRF = fLO + fIF
fRF
VCC = 2.7V
-18
-14
-16
-10
-12
-6
-8
-4
0
-2
2
250 800 1350 1900 2450 3000
MAX2661
LO PORT RETURN LOSS vs. FREQUENCY
MAX2661toc06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
0
6
4
2
8
10
12
0 20015050 100 250 300 350 400 450 500
MAX2661
CONVERSION GAIN vs. IF FREQUENCY
MAX2661toc04
IF FREQUENCY (MHz)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
fIF = fLO - fRF
fIF = fRF - fLO
fIF = fRF - fLO
fIF
fRF = 2450MHz
fRF = 1900MHz
fRF = 900MHz
-10
-5
5
0
10
15
-25 -15-20 -10 -5 0 5 10
MAX2661
CONVERSION GAIN vs. LO POWER
MAX2661toc05
LO POWER (dBm)
CONVERSION GAIN (dB)
fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
0
200
100
300
600
700
500
400
800
-400
-300
-350
-250
-100
-50
-150
-200
0
0 100 150 200 25050 300 350 400 450 500
MAX2661
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2661toc07
IF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
IMAGINARY
REAL
0
200
100
500
400
300
600
700
800
900
0 500 1000 1500 2000 2500 3000
MAX2661
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2661toc08
RF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
-1000
-800
-900
-500
-600
-700
-400
-300
-200
-100
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
Typical Operating Characteristics (continued)
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
10
12
14
16
22
24
18
20
26
28
30
500 1000750 1250 1500 1750 2000 2250 2500
MAX2661
LO-to-RF AND RF-TO-LO ISOLATION
vs. LO OR RF FREQUENCY
MAX2661toc09
LO OR RF FREQUENCY (MHz)
ISOLATION (dB)
LO-TO-RF ISOLATION
POWER INTO LO PORT = -5dBm
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
-35
-5
0
-10
-25
-30
-20
-15
5
10
15
-40 -25 -20 -10 -5-30-35 -15 0
MAX2661
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2661toc10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
CONVERSION GAIN
OUTPUT POWER
1.0
2.0
1.5
3.0
2.5
3.5
4.0
2.5 3.5 4.03.0 4.5 5.0 5.5
MAX2663
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX2663toc1
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = -40°C
TA = +25°C
TA = +85°C
0
3
2
1
4
5
6
7
8
9
10
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2663
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2663toc02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
TA = +85°C
TA = +25°C
TA = -40°C
SHDN = GND
-10
-6
-8
0
-2
-4
4
2
6
-25 -15-20 -10 -5 0 5 10
MAX2663
CONVERSION GAIN vs. LO POWER
MAX2663toc05
LO POWER (dBm)
CONVERSION GAIN (dB)
fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
-10
-6
-8
-2
-4
0
4
2
6
01000500 1500 2000 2500 3000
MAX2663
CONVERSION GAIN vs. RF FREQUENCY
MAX2663toc03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
VCC = +2.7V
400MHz
900MHz
1900MHz
2450MHz
RF MATCH
45MHz
70MHz
70MHz
240MHz
fIF
fRF = fLO - fIF
fRF = fLO - fIF
fRF = fLO + fIF
fRF = fLO + fIF
fRF
VCC = +5.5V
-6
-1
0
-3
-2
-4
-5
1
2
3
4
0 200100 300 400 500
MAX2663
CONVERSION GAIN vs. IF FREQUENCY
MAX2663toc04
IF FREQUENCY (MHz)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
fIF = fLO - fRF
fIF = fRF - fLO
fIF = fRF - fLO
fIF
fRF = 2450MHz
fRF = 1900MHz
fRF = 900MHz
-18
-14
-16
-10
-12
-6
-8
-4
0
-2
2
250 700 1150 1600 2050 2500
MAX2663
LO PORT RETURN LOSS vs. LO FREQUENCY
MAX2663toc06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
0
200
100
300
600
700
800
500
400
900
-900
-700
-800
-600
-300
-200
-100
-400
-500
0
0 100 200 300 400 500
MAX2663
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2663toc07
IF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
_______________________________________________________________________________________ 9
0
200
100
500
400
300
600
700
800
900
0 500 1000 1500 2000 2500
MAX2663
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2663toc08
RF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
IMAGINARY
REAL
-1000
-800
-900
-500
-600
-700
-400
-300
-200
-100
IMAGINARY IMPEDANCE (Ω)
0
5
15
10
20
25
30
35
500 1000 1500 2000 2500
MAX2663
LO-TO-RF AND RF-TO-LO ISOLATION
vs. LO AND RF FREQUENCY
MAX2663toc09
LO AND RF FREQUENCY (MHz)
ISOLATION (dB)
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
LO-TO-RF ISOLATION
POWER INTO LO PORT = -5dBm
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
-50
-20
-30
-40
-10
0
10
-25
-35
-45
-15
-5
5
-50 -30-40 -20 -10 0-45 -25-35 -15 -5
MAX2663
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2663toc10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 900MHz
fRF = 1900MHz fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz fRF = 2450MHz
CONVERSION GAIN
OUTPUT
POWER
8
10
9
12
11
13
14
2.5 3.5 4.03.0 4.5 5.0 5.5
MAX2671
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX2671toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = -40°C
TA = +25°C
TA = +85°C
0
6
4
2
8
10
12
0 20015050 100 250 300 350 400 450 500
MAX2671
CONVERSION GAIN vs. IF FREQUENCY
MAX2671toc04
IF FREQUENCY (MHz)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
fIF = fLO - fRF
fIF = fRF - fLO
fIF = fRF - fLO
fIF
fRF = 2450MHz
fRF = 1900MHz
fRF = 900MHz
0
3
2
1
4
5
6
7
8
9
10
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2671
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2671toc02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
TA = +25°C
TA = +85°C
SHDN = GND
TA = -40°C
-4
-2
4
2
0
6
8
10
12
01000500 1500 2000 2500 3000
MAX2671
CONVERSION GAIN vs. RF FREQUENCY
MAX2671toc03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
400MHz
900MHz
1900MHz
2450MHz
RF MATCH
45MHz
70MHz
70MHz
240MHz
fIF
fRF = fLO - fIF
fRF = fLO - fIF
fRF = fLO + fIF
fRF = fLO + fIF
fRF
VCC = +5.5V
VCC = +2.7V
-8
-6
-4
-2
4
0
2
8
10
6
12
-35 -25 -20 -15
-30 -10 -5 0 5 10
MAX2671
CONVERSION GAIN vs. LO POWER
MAX2671toc05
LO INPUT POWER (dBm)
CONVERSION GAIN (dB)
fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
-18
-14
-16
-10
-12
-6
-8
-4
0
-2
2
250 800 1350 1900 2450 3000
MAX2671
LO PORT RETURN LOSS vs. LO FREQUENCY
MAX2671toc06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
Typical Operating Characteristics (continued)
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
10 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
0
200
100
300
600
700
800
500
400
-400
-300
-350
-250
-100
-50
-150
-200
0
0 100 200 300 400 500
MAX2671
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2671toc07
IF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
18
20
24
22
26
28
30
32
34
500 1000 1500 2000 2500
MAX2671
LO-TO-RF AND RF-TO-LO ISOLATION
vs. LO or RF FREQUENCY
MAX2671toc09
LO AND RF FREQUENCY (MHz)
ISOLATION (dB)
LO-TO-RF ISOLATION
POWER INTO LO PORT = -10dBm
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
-50
-10
-20
-40
-30
0
10
20
-50 -25 -20 -10 -5-30-40-45 -35 -15 0
MAX2671
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2671toc10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 1900MHz
fRF = 900MHz fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
CONVERSION GAIN
OUTPUT POWER
-2
2
0
6
4
8
12
10
14
01000500 1500 2000 2500 3000
MAX2673
CONVERSION GAIN vs. RF FREQUENCY
MAX2673toc03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
VCC = +5.5V
VCC = +2.7V
VCC = +2.7V
400MHz
900MHz
1900MHz
2450MHz
RF MATCH
45MHz
70MHz
70MHz
240MHz
fIF
fRF = fLO - fIF
fRF = fLO - fIF
fRF = fLO + fIF
fRF = fLO + fIF
fRF
16
17
18
19
20
21
22
23
24
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2673
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX2673toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = +85°C
TA = +25°C
TA = -40°C
0
3
2
1
4
5
6
7
8
9
10
2.5 3.53.0 4.0 4.5 5.0 5.5
MAX2673
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2673toc02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
TA = +85°C
TA = -40°C
SHDN = GND
TA = +25°C
-2
4
2
0
6
8
10
12
14
0 20015050 100 250 300 350 400 450 500
MAX2673
CONVERSION GAIN vs. IF FREQUENCY
MAX2673toc04
IF FREQUENCY (MHz)
CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
fIF = fLO - fRF
fIF = fRF - fLO
fIF = fRF - fLO
fIF
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
0
2
4
10
6
8
12
14
-25 -15-20 -10 -5 0 5 10
MAX2673
CONVERSION GAIN vs. LO POWER
MAX2673toc05
LO POWER (dBm)
CONVERSION GAIN (dB)
fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
900MHz
1900MHz
2450MHz
970MHz
1830MHz
2210MHz
70MHz
70MHz
240MHz
fRF fLO fIF
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
______________________________________________________________________________________ 11
-18
-20
-14
-16
-10
-12
-6
-8
-4
0
-2
250 800 1350 1900 2450 3000
MAX2673
LO PORT RETURN LOSS vs. LO FREQUENCY
MAX2673toc06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
0
200
100
300
600
700
500
400
-300
-250
-100
-50
-150
-200
50
0
0 100 150 200 25050 300 350 400 450 500
MAX2673
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2673toc07
IF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
0
100
50
200
150
250
300
350
0 500 1000 1500 2000 2500 3000
MAX2673
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2673toc08
RF FREQUENCY (MHz)
REAL IMPEDANCE (Ω)
-700
-600
-300
-400
-500
-200
-100
0
IMAGINARY IMPEDANCE (Ω)
IMAGINARY
REAL
0
5
10
15
25
30
20
35
40
45
500 900 1300 1700 2100 2500
MAX2673
LO-to-RF ISOLATION AND RF-to-LO ISOLATION
vs. LO OR RF FREQUENCY
MAX2673toc09
LO OR RF FREQUENCY (MHz)
ISOLATION (dB)
LO-
POWER INTO LO PORT = -10dBm
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
TO-RF ISOLATION
-50
-10
-20
-40
-30
0
10
20
-40 -35 -25-30 -15 -10 -5-40-45 -20 0
MAX2673
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2673toc10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
fRF
970MHz
1830MHz
2210MHz
fLO
70MHz
70MHz
240MHz
fIF
fRF = 900MHz
fRF = 1900MHz fRF = 2450MHz
fRF = 900MHz
fRF = 1900MHz
fRF = 2450MHz
CONVERSION GAIN
OUTPUT POWER
Typical Operating Characteristics (continued)
(VCC = SHDN = +3.0V, Typical Operating Circuits, PLO = -5dBm (MAX2660/MAX2661/MAX2663), PLO = -10dBm (MAX2671/MAX2673),
PIFIN = -30dBm, TA= +25°C, unless otherwise noted.)
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
12 ______________________________________________________________________________________
Pin Description
FUNCTION
MAX2660
MAX2661
MAX2663
MAX2671
1
Local-Oscillator Input. Apply a local-oscillator signal with an amplitude of -10dBm to
+5dBm for the MAX2671/MAX2673 or -5dBm to +2dBm for the MAX2660/ MAX2661/
MAX2663. AC-couple to the oscillator with a DC blocking capacitor. Nominal DC volt-
age is VCC - 0.4V to VCC - 1.0V.
MAX2673
2Mixer Ground. Connect to the ground plane with a low-inductance connection.
3Intermediate Frequency Input. AC-couple to the input signal with a DC blocking
capacitor. Nominal DC voltage is 1.37V.
PIN
1
2, 6
6Active-Low Shutdown Pin. Drive low to deactivate all part functions and reduce the
supply current to less than 1µA. For normal operation, drive high or connect to VCC.
5Voltage Supply Rail, +2.7V to +5.5V. Bypass with a capacitor to the ground plane.
Capacitor value depends on desired operating frequency.
4
Radio Frequency Output. Open-collector output requires an inductor to VCC that is
part of an impedance-matching network. AC-couple to this pin using a blocking
capacitor that can be part of the impedance-matching network. See Applications
Information for details on impedance matching.
7, 8
3
4
5
NAME
LO
GND
IFIN
SHDN
VCC
RFOUT
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
______________________________________________________________________________________ 13
_______________Detailed Description
The MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
are 2.5GHz double-balanced upconverter mixers
designed to provide optimum linearity performance for
a specified supply current. These upconverter mixers
use single-ended RF, LO, and IF port connections,
except for the MAX2673, which uses a differential IF
port. An on-chip bias cell provides a low-power shut-
down feature. See the Selector Guide for device fea-
tures and comparison.
__________Applications Information
Local-Oscillator (LO) Input
The LO input is a single-ended broadband port with a
return loss of better than 8dB from 600MHz to 2.5GHz.
The LO signal is mixed with the input IF signal, and the
resulting upconverted output appears on the RFOUT
pin. AC-couple the LO pin with a capacitor having less
than 3Ωreactance at the LO frequency. The
MAX2671/MAX2673 include an internal LO buffer and
require an LO signal ranging from -10dBm to +5dBm,
while the MAX2660/MAX2661/MAX2663 require an LO
signal ranging from -5dBm to +2dBm.
IF Input
The MAX2660/MAX2661/MAX2663/MAX2671 have a
single-ended IF input port, while the MAX2673 has a
differential IF input port for high-performance interface-
to-differential IF filters. AC-couple the IF pin(s) with a
capacitor. The typical IF input frequency range is
40MHz to 500MHz. For further information, see the IF
Port Impedance vs. IF Frequency graph in the Typical
Operating Characteristics.
RF Output
The RF output frequency range extends from 400MHz
to 2.5GHz. RFOUT is a high-impedance, open-collector
output that requires an external inductor to VCC for
proper biasing. For optimum performance, implement
an impedance-matching network. The configuration
and values for the matching network depend on the fre-
quency, performance, and desired output impedance.
For assistance in choosing components for optimal per-
formance, see Table 1 as well as the RF Output
Impedance vs. RF Frequency graph in the Typical
Operating Characteristics.
Power Supply and
SSHHDDNN
Bypassing
Proper attention to supply bypassing is essential for a
high-frequency RF circuit. Bypass VCC with a 10µF
capacitor in parallel with an RF capacitor (Table 2). Use
separate vias to the ground plane for each of the
bypass capacitors and minimize trace length to reduce
inductance. Use separate vias to the ground plane for
each ground pin. Use low-inductance ground connec-
tions.
Decouple SHDN with a 100pF capacitor to ground to
minimize noise on the internal bias cell. Use a series
resistor (typically 100Ω) to reduce coupling of high-fre-
quency signals into the SHDN pin.
______________________Layout Issues
A well-designed PC board is an essential part of an RF
circuit. For best performance, pay attention to power-
supply issues as well as to the layout of the RFOUT
matching network.
Power-Supply Layout
To minimize coupling between different sections of the
IC, the ideal power-supply layout is a star configuration
with a large decoupling capacitor at a central VCC
node. The VCC traces branch out from this central
node, each going to a separate VCC node in the PC
board. At the end of each trace is a bypass capacitor
that has low ESR at the RF frequency of operation. This
arrangement provides local decoupling at each VCC
pin. At high frequencies, any signal leaking out of one
supply pin sees a relatively high impedance (formed by
the VCC trace inductance) to the central VCC node, and
an even higher impedance to any other supply pin, as
well as a low impedance to ground through the bypass
capacitor.
Impedance-Matching Network Layout
The RFOUT matching network is very sensitive to lay-
out-related parasitics. To minimize parasitic induc-
tance, keep all traces short and place components as
close as possible to the chip. To minimize parasitic
capacitance, use cutouts in the ground plane (and any
other plane) below the matching network components.
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
14 ______________________________________________________________________________________
MAX2660
MAX2661
MAX2663
MAX2671
MAX2673
LO
LO
IFIN+
IFIN-
MAX2673
ONLY
MAX2671
MAX2673
MAX2660
MAX2661
MAX2663
BIAS
VCC
SHDN
GND
RFOUT
Functional Diagram
Table 2. Typical Operating Circuit (External Component Values)
COMPONENT VALUE AT A GIVEN FREQUENCY (MHz)
100 100470 100
5.6 3.9Short 27
47
1.5
10
47
1
4.7
15
6.8
470
AT
1900
AT
2450
6.8
3.3
47
1.5
39
220
18
AT
400
AT
900
100 47470 47
8.2 3.3Short 33
1.8
100
47
Open
220
1.8
47
1.8
6.8
AT
1900
AT
2450
3.3
470
1.8
220
39
47
18
AT
400
AT
900
100 47470 47
8.2 3.3Short 33
1.5
100
47
Open
220
2.7
47
1.8
6.8
AT
1900
AT
2450
3.3
470
1
220
39
47
18
AT
400
AT
900
47 15470C6 (pF) 47
8.2 3.3ShortL1 (nH) 33
1.5
220
47
Open
15
2.7
47
2.2
6.8C5 (pF)
AT
1900
AT
2450
3.3C4 (pF)
470C3 (pF)
1
220
39L2 (nH)
47
18
AT
400
AT
900
PART
92–j375
130–j453
MAX2661 357–j649
82–j360
70–j290
MAX2663 485–j718
MAX2671 333–j613
MAX2673 220–j530
38–j99
45–j123
54–j152
31–j95
32–j70
65–j188
46–j150
35–j110
Table 1. RF Output Impedance
COMPONENT MAX2673MAX2663MAX2661/MAX2671MAX2660
RF OUTPUT IMPEDANCE (Ω)
AT 400MHz AT 900MHz AT 1900MHz AT 2450MHz
MAX2660 126–j459480–j732 46–j12465–j190
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
______________________________________________________________________________________ 15
MAX2660
MAX2661
MAX2663
MAX2671
LO
GND
IFIN
6
5
4
SHDN
VCC
RFOUT
1
2
3
SHUTDOWN
CONTROL
RF OUTPUT
C2
220pF
C8
100pF
C4*
C3*
R1
100Ω
C5*
C6* C9
10µF
C1
220pF
L2*
L1*
IF INPUT
LO INPUT
VCC
+3.0V
*THE VALUES OF L1, L2, C3, C4, C5, AND C6
DEPEND ON THE RF FREQUENCY AND PART NUMBER.
SEE TABLE 2.
MAX2673
LO
GND
SHDN
VCC
8
7
6
5
IFIN+
IFIN-
GND
RFOUT
1
2
3
4
IF INPUT
RF OUTPUT
C2
220pF
C7
220pF
C3**
C4**
C6**
C5**
C1
220pF
C8
100pF
C9
10µF
L2**
L1**
R2
100Ω
VCC
+3.0V
SHUTDOWN
CONTROL
LO INPUT
**THE VALUES OF L1, L2, C3, C4, C5, AND C6
DEPEND ON THE RF FREQUENCY.
SEE TABLE 2.
C10
22pF
Typical Operating Circuits
MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
16 ______________________________________________________________________________________
8LUMAXD.EPS
________________________________________________________Package Information
6LSOT.EPS