FEATURES
• RF/LO FREQUENCY RANGE: 30-250 MHz
• ON CHIP VCO
• LOW DISTORTION AGC AMPLIFIER:
-9 dBm IIP3 @ MIN Gain
• ON CHIP VIDEO AMP: 3.0 Vp-p (VCC = 5 V)
• SMALL 20 PIN SSOP PACKAGE
• AVAILABLE ON TAPE AND REEL
250 MHz QAM IF DOWNCONVERTER UPC2798GR
DESCRIPTION
NEC's UPC2798GR is a Silicon MMIC Downconverter manu-
factured with the NESAT™III silicon bipolar process. This
product consists of an input AGC amplifier, mixer, local oscil-
lator, and video amplifier. It is housed in a small 20 pin SSOP
package. The device is designed for use as an IF downconverter
for digital CATV settops and cable modems utilizing QAM
modulation.
NEC's stringent quality assurance and test procedures ensure
the highest reliability and performance.
California Eastern Laboratories
PART NUMBER UPC2798GR
PACKAGE OUTLINE S20
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
Total Block (VCC1 = 5 V, VCC2 = 5 V, RL = 1 kΩ)
ICC Circuit Current (no input signal) mA 24.0 35.5 45.0
CGMAX1 Maximum Conversion Gain, VAGC = 4.0 V, pins G1A - G1B shorted dB 68.0 74.0 76.0
CGMAX2 Maximum Conversion Gain, VAGC = 4.0 V, pins G1A - G1B open dB 58.0
CGMIN1 Minimum Conversion Gain, VAGC = 1.0 V, pins G1A - G1B shorted dB 32.0 39.0 43.0
CGMIN2 Minimum Conversion Gain, VAGC = 1.0 V, pins G1A - G1B open dB 22.0
IIP3Input Intercept Point, VAGC = 1.0 V, pins G1A - G1B shorted dBm -14.0
IIP3Input Intercept Point, VAGC = 1.0 V, pins G1A - G1B open dBm -8.0
Total Block (VCC1 = 5 V, VCC2 = 9 V, RL = 1 kΩ)
ICC Circuit Current (no input signal) mA 32.0 47.0 60.0
CGMAX1 Maximum Conversion Gain, VAGC = 4.0 V, pins G1A - G1B shorted dB 72.0 78.5 81.0
CGMAX2 Maximum Conversion Gain, VAGC = 4.0 V, pins G1A - G1B open dB 59.0
CGMIN1 Minimum Conversion Gain, VAGC = 1.0 V, pins G1A - G1B shorted dB 43.5
CGMIN2 Minimum Conversion Gain, VAGC = 1.0 V, pins G1A - G1B open dB 22.5
IIP3Input Intercept Point, VAGC = 1.0 V, pins G1A - G1B open dBm -7.5
ICC Circuit Current (no input signal) mA 15.0 23.0 28.0
fRF RF Input Frequency Range MHz 30 250
fOSC OSC Frequency Range MHz 30 250
fIF IF Output Frequency Range MHz DC 150
CGMAX Maximum Conversion Gain, VAGC = 4.0 V dB 25
CGMIN Minimum Conversion Gain, VAGC = 1.0 V dB -7
GCR AGC Dynamic Range, VAGC = 1.0 to 4.0 V dB 26 32
NF Noise Figure, SSB, VAGC = 4.0 V (MAX Gain) dB 9
VAGC (H) AGC Voltage High, at MAX Gain V 4.0
VAGC (L) AGC Voltage Low, at MIN Gain V 1.0
AGC IIP3AGC Input Intercept Point, at MIN Gain dBm -9
ELECTRICAL CHARACTERISTICS (TA = 25°C, RF = 45 MHz, LO = 55 MHz, PLO = -10 dBm, unless otherwise specified)
AGC Amplifier and Mixer Block (VCC1 = 5 V)
DISCONTINUED
SYMBOL PARAMETER UNITS MIN TYP MAX
VCC1 Supply Voltage 1 V 4.5 5.0 5.5
VCC2 Supply Voltage 2 V 4.5 5.0 10.0
TA1 Operating Temp. Range 1*°C -40 +25 +85
TA2 Operating Temp. Range 2** °C -40 +25 +75
SYMBOLS PARAMETERS UNITS RATINGS
VCC1 Supply Voltage 1
(Mixer Block) V 6.0
VCC2 Supply Voltage 2
(Video Amp Block) V 6.0
PDPower Dissipation,
TA = 85˚C2mW 430
TOP Operating Temperature °C -40 to +85
TSTG Storage Temperature °C -55 to +150
ABSOLUTE MAXIMUM RATINGS1 (TA = 25°C) RECOMMENDED
OPERATING CONDITIONS
Notes:
* @ VCC1 = VCC2 = 4.5 to 5.5 V
** @ VCC1 = 4.5 to 5.5 V, VCC2 = 4.5 to 10.0 V
Notes:
1. Operation in excess of any one of these parameters may result
in permanent damage.
2. Mounted on a 50 x 50 x 1.6 mm epoxy glass PWB.
SYMBOLS PARAMETERS UNITS RATINGS
VCC1 Supply Voltage 1
(Mixer Block) V 6.0
VCC2 Supply Voltage 2
(Video Amp Block) V 11.0
PDPower Dissipation,
TA = 75˚C2mW 500
TOP Operating Temperature °C -40 to +75
TSTG Storage Temperature °C -55 to +150
PART NUMBER UPC2798GR
PACKAGE OUTLINE S20
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
Video Amp Block (VCC2 = 5 V, differential, RL = 1 kΩ)
ICC Circuit Current (no input signal) mA 9.0 12.5 17.0
VOUT Output Voltage Vp-p 3.0
G1 Differential Gain 1, pins G1A and G1B shorted, VOUT = 3.0 Vp-p V/V 200
G2 Differential Gain 2, pins G1A and G1B open, VOUT = 3.0 Vp-p V/V 26
Video Amp Block (VCC2 = 9 V, differential, RL = 1 kΩ)
ICC Circuit Current (no input signal) mA 17.0 24.0 32.0
VOUT Output Voltage Vp-p 3.0
G1 Differential Gain 1, Pins G1A and G1B shorted V/V 385
G2 Differential Gain 2, Pins G1A and G1B open V/V 28.5
Video Amp Block (VCC2 = 5 V, single ended, RL = 50 Ω)
AVS1 Single-ended Gain, pins G1A - G1B shorted dB 40.0
AVS2 Single-ended Gain, pins G1A - G1B open dB 22.5
IIP3Input Intercept Point, pins G1A - G1B open, f1 = 9 MHz, f2 = 11 MHz dBm -11.5
Video Amp Block (VCC2 = 9 V, single ended, RL = 50 Ω)
AVS1 Single-ended Gain, pins G1A - G1B shorted dB 45.0
AVS2 Single-ended Gain, pins G1A - G1B open dB 23.5
IIP3Input Intercept Point, pins G1A - G1B open, f1 = 9 MHz, f2 = 11 MHz dBm -5.0
Video Amp Block (VCC2 = 5 or 9 V, common, RL = 1 k Ω)
BWG1 Bandwidth 1, G1 MHz 50
BWG2 Bandwidth 2, G2 MHz 50
RIN 1 Input Resistance 1, G1 kΩ3.5
RIN 2 Input Resistance 2, G2 kΩ9.7
CIN Input Capacitance, CIN pF 1.6
CMRR Common Mode Rejection Ratio, VCM = 1.0 Vp-p, ƒ = 100 kHz dB 80
PSRR Power Supply Rejection Ratio dB 70
τRRise Time ns 2.6
τDPropagation Delay Time ns 4.4
UPC2798GR
ELECTRICAL CHARACTERISTICS (TA = 25°C, RF = 45 MHz, LO = 55 MHz, PLO = -10 dBm, unless otherwise specified)
DISCONTINUED
UPC2798GR
TYPICAL CHARACTERISTICS (by measurement circuit 1: AGC Amp and Mixer Block)
CIRCUIT CURRENT vs.
SUPPLY VOLTAGE
CONVERSION GAIN vs.
INPUT FREQUENCY
CONVERSION GAIN vs.
IF FREQUENCY NOISE FIGURE vs. AGC VOLTAGE
CONVERSION GAIN vs.
AGC VOLTAGE
THIRD ORDER INTERMODULATION
LEVEL AND OUTPUT POWER vs.
INPUT POWER
Supply Voltage, VCC (V) Input Frequency, fRF (MHz)
IF Frequency, fIF (MHz) AGC Voltage, VAGC (V)
AGC Voltage, VAGC (V) Input Power, PIN (dBm)
Circuit Current, I
CC
(mA)
Conversion Gain, CG (dB)
Conversion Gain, CG (dB)
Noise Figure, NF (dB)
Conversion Gain, CG (dB)
Output Power, P
OUT
(dBm)
50
2468
10 12
10
20
30
40
00
Video Amp
Mixer
+AGC+VCO
no input
signal
T
A
= 25˚C
V
AGC
= 0 V
Total
P
RF
= 60 dBm
f
OSC
= f
RF
+5 MH
Z,
P
OSC
= -10 dBm
V
CC
= 5 V, T
A
= 25˚C
20
10
0
30
-10
-20
0200 250 300
-30 150
50 100
V
AGC
= 4.0 V
V
AGC
= 2.6 V
V
AGC
= 0.0 V
20
10
0
-10
-20
-30
030 60 90 120 150 180
30
f
RF
= 45 MH
Z
, P
RF
= -60 dBm
f
OSC
= 50~200 MH
Z
, P
OSC
= -10 dBm
V
CC
= 5 V, T
A
= 25˚C
V
AGC
= 4.0 V
V
AGC
= 2.6 V
V
AGC
= 0.0 V
20
10
0
0
12345
30
V
CC
= 5 V
f
RF
= 100 MH
Z
f
OSC
= 120 MH
Z
P
OSC
= -10 dBm
T
A
= 25˚C
DSB
0
30
20
10
0
-10
12345
VCC = 5 V
fRF = 45 MHZ
PRF = -60 dBm
fOSC = 50 MHZ
POSC = -10 dBm
TA = 25˚C
-20
-30
-40
-50
-60
-70
-80
-90
-60 -50 -40 -30 -20 -10 0
-10 VCC = 5 V
VAGC = 0 V
fRF1 = 44 MHZ
fRF2 = 46 MHZ
fOSC = 55 MHZ
POSC = -10 dBm
TA = 25˚C
POUT
IM3
DISCONTINUED
STANDARD CHARACTERISTICS (by measurement circuit 2: Video Amp, RL = 1 kΩ, TA = 25˚C)
DIFFERENTIAL GAIN vs.
INPUT FREQUENCY
DIFFERENTIAL GAIN vs.
INPUT FREQUENCY
OUTPUT POWER vs. INPUT POWER
(VIDEO AMP)
OUTPUT POWER vs. INPUT POWER
(VIDEO AMP)
DIFFERENTIAL GAIN
vs. RESISTANCE
Input Frequency, fIN (MHz) Input Frequency, fIN (MHz)
Input Power, PIN (dBm) Input Power, PIN (dBm)
Resistance (Ω)
Differential Gain (V/V)
Differential Gain (V/V)
Output Power, Pout (dBm)
Output Power, Pout (dBm)
Differential Gain (V/V)
UPC2798GR
100
0
100
200
300
400
020 40 60 80
G1A-G1B : short
P
OUT
= 1.5 V
p-p
const.
V
CC
= 9 V
V
CC
= 5 V
10
0
0
40
30
20
20 40 60 80 100
G1A-G1B :
open
P
OUT
= 1.5 V
p-p
const.
V
CC
= 9 V
V
CC
= 5 V
0
-10
-20 0
-10
-20
-30
-40
-30
fin = 10 MH
Z
G1A-G1B : short
V
CC
= 9 V
V
CC
= 5 V
-50
0
-10
-20
-30
-40
-40 -30 -20 -10 010
fin = 10 MH
Z
G1A-G1B : open
V
CC
= 9 V
V
CC
= 5 V
500
400
300
200
100
100 246 200056
030 43 open
short
fin = 10 MH
Z
V
CC
= 9 V
V
CC
= 5 V
DISCONTINUED
UPC2798GR
0
10
20
30
40
50
0.1 1 10 100
V
CC2
= 5 V
G1A-G1B: short
0
10
20
30
40
50
0.1 1 10 100
VCC2 = 5 V
G1A-G1B: open
20
0
-20
-40
-60
-80
-50 -40 -30 -20 -10
P
OUT
IM
3
V
CC2
= 5 V
f
1
= 9 MHz
f
2
= 11 MHz
G1A–G1B: open
20
0
-20
-40
-60
-80
-50 -40 -30 -20 -10
P
OUT
IM
3
V
CC2
= 9 V
f
1
= 9 MHz
f
2
= 11 MHz
G1A–G1B: open
0
10
20
30
40
50
0.1 1 10 100
VCC2 = 9 V
G1A-G1B: short
0
10
20
30
40
50
0.1 1 10 100
V
CC2
= 9 V
G1A-G1B: open
GAIN vs. INPUT FREQUENCY GAIN vs. INPUT FREQUENCY
STANDARD CHARACTERISTICS (by measurement circuit 3: Video Amp, RL = 50 Ω, TA = 25˚C)
GAIN vs. INPUT FREQUENCY GAIN vs. INPUT FREQUENCY
THIRD ORDER INTERMODULATION LEVEL
AND OUTPUT POWER vs. INPUT POWER
THIRD ORDER INTERMODULATION LEVEL
AND OUTPUT POWER vs. INPUT POWER
Single-ended Gain, A
VS
(dB)
Single-ended Gain, A
VS
(dB)
Single-ended Gain, A
VS
(dB)
Single-ended Gain, A
VS
(dB)
Input Frequency, fIN (MHz) Input Frequency, fIN (MHz)
Input Frequency, fIN (MHz)
Input Frequency, fIN (MHz)
Input Power, PIN (dBm)
Output Power, P
OUT
(dBm)
Output Power, P
OUT
(dBm)
Input Power, PIN (dBm)
DISCONTINUED
UPC2798GR
TYPICAL CHARACTERISTICS (by measurement circuit 4: Total Block, fRF = 45 MHz, PRF = -60 dBm, Posc = -10 dBm)
CONVERSION GAIN vs.
IF FREQUENCY
Conversion Gain, CG (dB)
IF Frequency, fIF (MHz)
CONVERSION GAIN vs.
IF FREQUENCY
CONVERSION GAIN vs.
IF FREQUENCY
CONVERSION GAIN vs.
IF FREQUENCY
IF Frequency, fIF (MHz)
IF Frequency, fIF (MHz)
IF Frequency, fIF (MHz)
Conversion Gain, CG (dB)
Conversion Gain, CG (dB)
Conversion Gain, CG (dB)
80
60
40
20
0040 80 120 160
VCC1 = 5 V, VCC2 = 5 V
G1A - G1B : short
1 KΩ load, TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
80
60
40
20
0040 80 120 160
VCC1 = 5 V, VCC2 = 9 V
G1A - G1B : short
1 KΩ load, TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
80
60
40
20
0040 80 120 160
V
CC1
= 5 V, V
CC2
= 5 V
G1A - G1B : open
1 KΩ load, T
A
= 25˚C
V
AGC
= 3 V
V
AGC
= 4 V
80
60
40
20
0040 80 120 160
V
CC1
= 5 V, V
CC2
= 9 V
G1A - G1B : open
1 KΩ load, T
A
= 25˚C
V
AGC
= 4 V
V
AGC
= 3 V
DISCONTINUED
UPC2798GR
TYPICAL CHARACTERISTICS (by measurement circuit 4: Total Block, PRF = -60 dBm, fOSC = fRF + 10 MHz, POSC = -10 dBm)
CONVERSION GAIN vs.
INPUT FREQUENCY
Conversion Gain, CG (dB)
Input Frequency, fRF (MHz)
CONVERSION GAIN vs.
INPUT FREQUENCY
CONVERSION GAIN vs.
INPUT FREQUENCY
CONVERSION GAIN vs.
INPUT FREQUENCY
Input Frequency, fRF (MHz)
Input Frequency, fRF (MHz)
Input Frequency, fRF (MHz)
Conversion Gain, CG (dB)
Conversion Gain, CG (dB)
Conversion Gain, CG (dB)
0
80
60
40
20
0
50 100 150 200 250
VCC1 = 5 V
VCC2 = 5 V
1 KΩ load
G1A-G1B : short
TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
0
80
60
40
20
0
50 100 150 200 250
VCC1 = 5 V
VCC2 = 9 V
1 KΩ load
G1A-G1B : short
TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
0
80
60
40
20
0
50 100 150 200 250
VCC1 = 5 V, VCC2 = 5 V
G1A-G1B : open
1 KΩ load, TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
0
80
60
40
20
0
50 100 150 200 250
VCC1 = 5 V, VCC2 = 9 V
G1A-G1B : open
1 KΩ load, TA = 25˚C
VAGC = 4 V
VAGC = 3 V
VAGC = 1 V
DISCONTINUED
UPC2798GR
V
CC1
= 5 V
V
CC2
= 5 V
f
1
= 44 MHz
f
2
= 46 MHz
f
OSC
= 55 MHz
P
OSC
= -10 dBm
G1A–G1B: short
P
OUT
IM
3
0
-20
-40
-60
-80
-50 -40 -30 -20 -10 0
V
CC1
= 5 V
V
CC2
= 9 V
f
1
= 44 MHz
f
2
= 46 MHz
f
OSC
= 55 MHz
P
OSC
= -10 dBm
G1A–G1B: open
IM
3
P
OUT
0
-20
-40
-60
-80
-50 -40 -30 -20 -10 0
0
-20
-40
-60
-80
-50 -40 -30 -20 -10 0
V
CC1
= 5 V
V
CC2
= 5 V
f
1
= 44 MHz
f
2
= 46 MHz
f
OSC
= 55 MHz
P
OSC
= -10 dBm
G1A–G1B: short
P
OUT
IM
3
THIRD ORDER INTERMODULATION LEVEL AND
OUTPUT POWER vs. INPUT POWER
THIRD ORDER INTERMODULATION LEVEL AND
OUTPUT POWER vs. INPUT POWER
THIRD ORDER INTERMODULATION LEVEL AND
OUTPUT POWER vs. INPUT POWER
Input Power, PIN (dBm) Input Power, PIN (dBm)
Input Power, PIN (dBm)
Output Power, P
OUT
(dBm)
Output Power, P
OUT
(dBm)
Output Power, P
OUT
(dBm)
STANDARD CHARACTERISTICS (by measurement circuit 4: Total Block)
DISCONTINUED
STANDARD CHARACTERISTICS (by application circuit example : MIXER block)
UPC2798GR
CONVERSION GAIN vs.
INPUT FREQUENCY
NOISE FIGURE vs.
AGC VOLTAGE
CONVERSION GAIN vs.
AGC VOLTAGE
THIRD ORDER INTERMODULATION
LEVEL AND OUTPUT POWER vs.
INPUT POWER
OSCILLATOR FREQUENCY vs.
TUNING VOLTAGE
Input Frequency, fRF (MHz) AGC Voltage, VAGC (V)
AGC Voltage, VAGC (V) Input Power, PIN (dBm)
Tuning Voltage, VTU (V)
Conversion Gain, CG (dB)
Noise Figure, NF (dB)
Conversion Gain, CG (dB)
Output Power, P
OUT
(dBm)
Oscillator Frequency, f
OSC
(MHz)
30
25
20
30 40 50 60
f
RF
= 50 MHz
f
IF
= 10 MHz
P
RF
= -50 dBm
V
AGC
= 4 V
V
CC
= 5.5 V
V
CC
= 5.0 V
V
CC
= 4.5 V
30
20
10
0012345
fRF = 50 MHZ
fIF = 10 MHZ
VCC = 4.5 V
VCC = 5.0 V
VCC = 5.5 V
DSB
-10
0
20
10
30
123450
f
RF
= 50 MH
Z
f
IF
= 10 MH
Z
P
RF
= -50 dBm
V
CC
= 4.5 V
V
CC
= 5.0 V
V
CC
= 5.5 V
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-60 -50 -40 -30 -20 -10 0 10
VCC = 5 V
fRF1 = 45 MHZ
fRF2 = 46 MHZ
fOSC= 55 MHZ
VAGC= 0 V
POUT
IM3
20
70
60
50
40
30
0 5 10 15
VCC = 5 V
DISCONTINUED
UPC2798GR
Pin Pin Pin Voltage Function and Explanation Equivalent Circuit
No. Name Typ. (V)
1 AGC IN1 1.5 RF input pins. Pins 1 and 2 are each base inputs
to a differential amplifier. In the case of a single-ended
input, bypass the unused pin to ground through a
capacitor.
2 AGC IN2 1.5
3VAGC 0~5 Gain control pin of the mixer input amplifier. VAGC up
= gain up. It is recommended to use a 100k Ω voltage
divider at this pin.
4VCC1 5.0 Supply voltage pin for the downconverter block. This
pin should be connected with a bypass capacitor
(e.g., 1000 pF) to minimize ground impedance.
5 OSC OUT 4.0 Output pin for the internal oscillator. This pin may be
connected to the input of a PLL synthesizer.
6 GND 0.0 Ground pin. This pin must be connected to system
ground. Form ground pattern as wide as possible to
minimize ground impedance.
7 OSC B2 2.4 Input pins for the internal oscillator. The internal
oscillator consists of a balanced amplifier.
8 OSC C1 4.6
9 OSC C2 4.6
10 OSC B1 2.4
PIN FUNCTIONS
12
4
Reg
AGC
Control
AGC
Control
4
3
REG
4
5
910
784
Reg
Reg
DISCONTINUED
UPC2798GR
Pin Pin Pin Voltage Function and Explanation Equivalent Circuit
No. Name Typ. (V)
( ) is value
at VCC = 9V
11 OUT2 2.5 Output pins for the video amplifier. With RL = 1k Ω,
(4.7) the differential output voltage is 3 Vp-p. OUT1 and
INA are in phase. OUT2 and INB are in phase. In
the case of a single-ended output, bypass the unused
pin to ground through a capacitor.
12 OUT1 2.5
(4.7)
13 VCC2 5~9 Supply voltage pin for the video amplifier block. This
pin should be connected with a bypass capacitor
(e.g., 1000 pF) to minimize ground impedance.
14 INB 2.5 Input pins for the video amplifier. These pins have
(4.1) high impedance. In the case of a single-ended input,
bypass the unused pin to ground through a capacitor.
15 INA 2.5
(4.1)
16 G1B 1.7 Gain control pins for the video amplifier. The gain
(3.3) may be adjusted by varying the value of the resistor
between pins 16 and 17. Maximum gain = short;
Minimum gain = open.
17 G1A 1.7
(3.3)
18 MIX OUT1 3.7 Output pins for the downconverter. These are emitter
follower outputs which feature low impedance. In the
case of a single-ended output, bypass the unused
pin to ground through a capacitor.
19 MIX OUT2 3.7
20 GND 0.0 Ground pin. This pin must be connected to system
ground. Form ground pattern as wide as possible
to minimize ground impedance.
PIN FUNCTIONS
11
12
13
17 15 13 14 16
REG
18
19
4
REG
DISCONTINUED
UPC2798GR
MEASUREMENT CIRCUIT 1
MEASUREMENT CIRCUIT 2
AGC & MIXER BLOCK
VIDEO AMP BLOCK
RL = 1kΩ
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
10nF
10nF
10nF
MIX OUT
50Ω
AGC IN
OSC OUT
VAGC
VCC 1
OSC IN
10nF
10nF
10nF
10nF
220nF
220nF
1nF
100k
100k
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
10nF
Vcc 2
10nF
10nF
10nF
1nF
220nF
50Ω
50Ω
50Ω
1kΩ
950Ω
Spectrum
Analyzer
Signal
Generator
DISCONTINUED
UPC2798GR
MEASUREMENT CIRCUIT 3
TOTAL BLOCK
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
10nF
Vcc 2
10nF
10nF
10nF
1nF
220nF
50Ω
50Ω
50Ω
50Ω
950Ω
Spectrum
Analyzer
Signal
Generator
MEASUREMENT CIRCUIT 4
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
10nF
10nF
10nF
10nF
10nF
1nF
220nF Vcc2
5pF
1k
1k
AGC IN
OSC OUT
V
AGC
V
CC 1
OSC IN
10nF
10nF
10nF
10nF
220nF
220nF
1nF
100k
100k
50Ω
Spectrum
Analyzer
1kΩ
950Ω
VIDEO AMP BLOCK
RL = 50Ω
DISCONTINUED
4-248
OUTLINE DIMENSIONS (Units in mm)
PACKAGE OUTLINE SSOP 20
All dimensions are typical unless specified otherwise.
PART NUMBER QUANTITY
UPC2798GR-E1-A 2500/Reel
ORDERING INFORMATION
UPC2798GR
INTERNAL BLOCK DIAGRAM
Notes: Embossed tape, 12 mm wide.
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably
be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify CEL for all damages resulting from such improper use or sale.
EXCLUSIVE NORTH AMERICAN AGENT FOR RF, MICROWAVE & OPTOELECTRONIC SEMICONDUCTORS
CALIFORNIA EASTERN LABORATORIES • Headquarters • 4590 Patrick Henry Drive • Santa Clara, CA 95054-1817 • (408) 988-3500 • Telex 34-6393 • FAX (408) 988-0279
24-Hour Fax-On-Demand: 800-390-3232 (U.S. and Canada only) • Internet: http://WWW.CEL.COM
6/99
DATA SUBJECT TO CHANGE WITHOUT NOTICE
20 11
110
7.00 MAX 6.4±0.2
4.4±0.1 1.0±0.1
0.5±0.2
0.15
1.8 MAX
1.5 ±0.1
0.22
0.65 0.575 MAX
N
+0.10
- 0.05
+0.10
- 0.05
NEC
C2798G
XXXXX
xxxxx = Lot/Date Code
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
AGC IN1
AGC IN2
V
AGC
V
CC1
OSC OUT
GND
OSC B2
OSC C2
OSC C2
OSC B1
MIX OUT
1
G
1
A
GND
MIX OUT
2
G
1
B
V
AMP
IN1
V
AMP
IN2
V
CC2
OUT
1
OUT
2
APPLICATION CIRCUIT EXAMPLE
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
10nF
10nF
10nF
10nF
10nF
1nF
220nF Vcc2
5pF
1k
1k
OUT 1
OUT 2
AGC IN
OSC OUT
VAGC
VCC 1
10nF
1000pF
1000pF
CV: ISV209
Vtu
10k
10k
1.2 µ H
10pF
10pF
20pF
Cv
10nF
220nF
220nF
1nF
100k
100k
DISCONTINUED
4-249
4590 Patrick Henry Drive
Santa Clara, CA 95054-1817
Telephone: (408) 919-2500
Facsimile:
(
408
)
988-0279
Subject: Compliance with EU Directives
CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant
with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous
Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive
2003/11/EC Restriction on Penta and Octa BDE.
CEL Pb-free products have the same base part number with a suffix added. The suffix –A indicates
that the device is Pb-free. The –AZ suffix is used to designate devices containing Pb which are
exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals.
All devices with these suffixes meet the requirements of the RoHS directive.
This status is based on CEL’s understanding of the EU Directives and knowledge of the materials that
go into its products as of the date of disclosure of this information.
Restricted Substance
per RoHS
Concentration Limit per RoHS
(values are not yet fixed)
Concentration contained
in CEL devices
-A -AZ
Lead (Pb) < 1000 PPM Not Detected (*)
Mercury < 1000 PPM Not Detected
Cadmium < 100 PPM Not Detected
Hexavalent Chromium < 1000 PPM Not Detected
PBB < 1000 PPM Not Detected
PBDE < 1000 PPM Not Detected
If you should have any additional questions regarding our devices and compliance to environmental
standards, please do not hesitate to contact your local representative.
Important Information and Disclaimer: Information provided by CEL on its website or in other communications concerting the substance
content of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information
provided by third parties and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better
integrate information from third parties. CEL has taken and continues to take reasonable steps to provide representative and accurate
information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. CEL and CEL
suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for
release.
In no event shall CEL’s liability arising out of such information exceed the total purchase price of the CEL part(s) at issue sold by CEL to
customer on an annual basis.
See CEL Terms and Conditions for additional clarification of warranties and liability.
DISCONTINUED