For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 1
HMC685LP4 / 685LP4E
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
v04.0110
General Description
Features
Functional Diagram
Electrical Speciîš„cations,
TA = +25° C, IF = 200 MHz, LO = 0 dBm, Vcc = Vcc1, 2, 3 = +5V, G_Bias = +2.5V*
Typical Applications
Nominal Supply Icc = 120 mA Icc = 90 mA Icc = 70 mA
Units
Parameter Min. Typ. Max. Typ. Typ.
Frequency Range, RF 1.7 - 2.2 GHz
Frequency Range, LO 1.5 - 2.2 GHz
Frequency Range, IF DC - 500 MHz
Conversion Loss 8 10 8 8 dB
Noise Figure (SSB) 8 8 8 dB
LO to RF Isolation 22 30 33 34 dB
LO to IF Isolation 24 30 31 32 dB
RF to IF Isolation 30 42 42 43 dB
IP3 (Input) 35 34 32 dBm
1 dB Compression (Input) 25 24 23 dBm
LO Drive Input Level (Typical) -6 to +3 -6 to +3 -6 to +3 dBm
Supply Current Icc total 120 140 90 70 mA
* Unless otherwise noted all measurements performed as downconverter with low side LO & IF = 200 MHz.
The HMC685LP4(E) is Ideal for:
• Cellular/3G & LTE/WiMAX/4G
• Basestations & Repeaters
• GSM, CDMA & OFDM
• Transmitters and Receivers
The HMC685LP4(E) is a high dynamic range passive
MMIC mixer with integrated LO amplier in a 4x4 SMT
QFN package covering 1.7 to 2.2 GHz. Excellent input
IP3 performance of +35 dBm for down conversion is
provided for 3G & 4G GSM/CDMA applications at an
LO drive of 0 dBm. With an input 1 dB compression
of +27 dBm, the RF port will accept a wide range of
input signal levels. Conversion loss is 8 dB typical.
The DC to 500 MHz IF frequency response will sat-
isfy GSM/CDMA transmit or receive frequency plans.
The HMC685LP4(E) is pin for pin compatible with the
HMC684LP4(E) which is a 700 - 1000 MHz mixer with
LO amplier.
High Input IP3: +35 dBm
8 dB Conversion Loss @ 0 dBm LO
Optimized for Low Side LO Input
Upconversion & Downconversion Applications
Adjustable Supply Current
24 Lead 4x4mm SMT Package: 16mm2
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 2
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
Conversion Gain vs. Temperature Isolation
Return LossConversion Gain vs. LO Drive
IF Bandwidth (LO= 1.7 GHz)
-20
-15
-10
-5
0
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
-20
-15
-10
-5
0
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
0 0.1 0.2 0.3 0.4 0.5
IF Return Loss
Conversion Gain
RESPONSE (dB)
IF FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
RF
LO
RETURN LOSS (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
1.6 1.8 2 2.2 2.4
RF/IF
LO/RF
LO/IF
ISOLATION (dB)
RF FREQUENCY (GHz)
Input P1dB vs. Temperature
10
15
20
25
30
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
P1dB (dBm)
RF FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 3
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
Input IP3 vs. Temperature[1]
0
10
20
30
40
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
IP3 (dBm)
RF FREQUENCY (GHz)
Input IP3 vs. LO Drive [1]
0
10
20
30
40
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
IP3 (dBm)
RF FREQUENCY (GHz)
+2RF -2LO Response vs. LO Drive [2]
+2RF -2LO Response vs. Temperature [2]
+3RF -3LO Response vs. Temperature [2] +3RF -3LO Response vs. LO Drive [2]
40
50
60
70
80
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
+2RF-2LO RESPONSE (dBc)
RF FREQUENCY (GHz)
40
50
60
70
80
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
+2RF-2LO RESPONSE (dBc)
RF FREQUENCY (GHz)
60
65
70
75
80
85
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
+3RF-3LO RESPONSE (dBc)
RF FREQUENCY (GHz)
60
65
70
75
80
85
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
+3RF-3LO RESPONSE (dBc)
RF FREQUENCY (GHz)
[1] Two-tone input power = +9 dBm each tone, 1 MHz spacing [2] Referenced to RF input power at 0 dBm
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 4
Input IP3 vs. G_Bias Voltage [1]
22
24
26
28
30
32
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
1 V
1.5 V
2 V
2.5 V
3 V
IP3 (dBm)
RF FREQUENCY (GHz)
R9 = 270 Ohms
Icc = 75 mA
Vcc1, 2, 3 = 3.3 V
Conversion Gain vs. G_Bias Voltage
-12
-11
-10
-9
-8
-7
-6
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
1 V
1.5 V
2 V
2.5 V
3 V
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
R9 = 270 Ohms
Icc = 75 mA
Vcc1, 2, 3 = 3.3 V
Input IP3 vs. G_Bias Voltage [1]
Conversion Gain vs. G_Bias Voltage
Conversion Gain vs. Icc Input IP3 vs. Icc [1]
26
28
30
32
34
36
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
1.5 V
2 V
2.5 V
3 V
3.5 V
IP3 (dBm)
RF FREQUENCY (GHz)
R9 = 270 Ohms
Icc = 120 mA
Vcc1, 2, 3 = 5.0 V
-12
-11
-10
-9
-8
-7
-6
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
1.5 V
2 V
2.5 V
3 V
3.5 V
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
R9 = 270 Ohms
Icc = 120 mA
Vcc1, 2, 3 = 5.0 V
25
27
29
31
33
35
37
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
120 mA
110 mA
100 mA
90 mA
80 mA
70 mA
IP3 (dBm)
RF FREQUENCY (GHz)
G_Bias = 2.5 V
Vcc1, 2, 3 = 5.0 V
-10
-9.5
-9
-8.5
-8
-7.5
-7
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
120 mA
110 mA
100 mA
90 mA
80 mA
70 mA
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
G_Bias = 2.5 V
Vcc1, 2, 3 = 5.0 V
[1] Two-tone input power = +9 dBm each tone, 1 MHz spacing
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
Low Power Consumption Performance
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 5
[1] Two-tone input power = +9 dBm each tone, 1 MHz spacing.
Conversion Gain vs. LO Drive
-20
-15
-10
-5
0
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
Input IP3 vs. LO Drive [1]
0
10
20
30
40
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
-6 dBm
-3 dBm
0 dBm
+3 dBm
IP3 (dBm)
RF FREQUENCY (GHz)
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
Low Power Consumption Performance
Typical Upconverter Performance
Input IP3 vs. Temperature, Icc = 70 mA [1]
20
25
30
35
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
IP3 (dBm)
RF FREQUENCY (GHz)
Conversion Gain vs.
Temperature, Icc = 70 mA
-12
-11
-10
-9
-8
-7
-6
1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4
+25 C
+85 C
-40 C
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
Icc vs. R9
60
70
80
90
100
110
120
130
250 300 350 400 450 500 550 600
Icc (mA)
R9 (Ohms)
Vcc1, 2, 3 = 5.0 V
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 6
Harmonics of LO
MxN Spurious @ IF Port
nLO
mRF 0 1 2 3 4
0 xx 21 16 37 29
1 39 0 37 24 53
2 67 64 54 66 76
3 106 77 95 69 89
4 106 116 115 99 105
RF Freq. = 1.9 GHz @ 0 dBm
LO Freq. = 1.7 GHz @ 0 dBm
All values in dBc below IF power level (1RF - 1LO).
nLO Spur @ RF Port
LO Freq. (GHz) 1 2 3 4
1.6 29 13 32 25
1.7 28 13 35 19
1.8 29 14 41 18
1.9 29 16 41 20
2.0 29 20 42 28
2.1 30 22 37 30
2.2 31 22 35 31
2.3 35 21 34 33
LO = 0 dBm
All values in dBc below input LO level measured at RF port.
Typical Supply Current vs. Vcc
Vcc1, 2, 3 (V) Icc total (mA)
4.75 113
5.00 120
5.25 127
Downconverter will operate over full voltage range shown above.
Absolute Maximum Ratings
RF / IF Input (Vcc1, 2, 3 = +5V) +26 dBm
LO Drive (Vcc1, 2, 3 = +5V) +10 dBm
Vcc1-3 5.5V
Channel Temperature 125 °C
Continuous Pdiss (T = 85°C)
(derate 20.69 mW/°C above 85°C) 0.83 mW
Thermal Resistance
(channel to ground paddle) 48.33 °C/W
Storage Temperature -65 to 150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 7
Outline Drawing
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC685LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H685
XXXX
HMC685LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H685
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY.
3. LEAD AND GROUND PADDLE PLATING: 100% MATTE TIN.
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
6. PAD BURR LENGTH SHALL BE 0.15mm MAX.
PAD BURR HEIGHT SHALL BE 0.25mm MAX.
7. PACKAGE WARP SHALL NOT EXCEED 0.05mm
8. ALL GROUND LEADS AND GROUND PADDLE
MUST BE SOLDERED TO PCB RF GROUND.
9. REFER TO HITTITE APPLICATION NOTE
FOR SUGGESTED PCB LAND PATTERN.
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 8
Pin Number Function Description Interface Schematic
1, 6, 7, 11 - 14,
18, 20, 23 N/C No connection. These pins may be connected to RF
ground. Performance will not be affected.
2, 5, 15, 17 GND Package bottom must be
connected to RF/DC ground.
3 RF This pin is matched single-ended 50 Ohm and DC
shorted to ground through a balun.
4 TAP Center tap of secondary side of the internal RF balun.
Short to ground with a zero ohm close to the IC.
8, 10, 24 Vcc1, Vcc2,
Vcc3
Power supply voltage. See application circuit
for required external components.
9 LO_BIAS
LO buffer current adjustment pin. Adjust the LO buffer
current through the external resistor R9 shown in the
application circuit (connect 270 Ohms for nominal
operation). This adjustment allows for a trade-off
between power dissipation and linearity performance of
the converter.
16 LO This pin is matched single-ended 50 Ohm and DC
shorted to ground through a balun.
19 G_BIAS
External bias. See application circuit for recom-
mended external components. Apply +2.5V for nominal
operation at 5V supply voltage. G_Bias can be set to
between 0 and 5Vdc. The G_bias pin has an internal
15K ohm resistance to ground. This adjustment allows
for a trade off between conversion loss and linearity
performance of the converter (see gures CG, IP3 vs.
G-Bias).
21, 22 IFN, IFP
Differential IF input / output pins matched to differential
50 Ohms. For applications not requiring operation to
DC an off chip DC blocking capacitor should be used.
Pin Descriptions
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 9
Evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from Hit-
tite upon request.
Item Description
J1 - J3 SMA Connector
J4 - J7 DC Pin
C19 22 pF Capacitor, 0402 Pkg.
C7, C8 10 nF Capacitor, 0402 Pkg.
C10, C12, C16, C18 1 nF Capacitor, 0402 Pkg.
C11, C15, C17, C21 0.1 µF Capacitor, 0402 Pkg.
C20 4.7 µF Case A, Tantulum
R2 - R4, R7, R8 0 Ohm Resistor, 0402 Pkg.
R9 270 Ohm Resistor, 0603 Pkg.
T1 1:1 Transformer - Tyco MABA CT0039
U1 HMC685LP4(E) Downconverter
PCB [2] 118162 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25R, FR4
List of Materials for Evaluation PCB 119935 [1]
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SINGLE & DOUBLE BALANCED - SMT
10
10 - 10
Application Circuit
HMC685LP4 / 685LP4E
v04.0110
BiCMOS MMIC MIXER W/ INTEGRATED
LO AMPLIFIER, 1.7 - 2.2 GHz
