VOLTAGE GAIN vs.
= 250鈩?/div>
30
20
10
0
-10
0
1
2
3
4
5
Automatic Gain Control Voltage, V
AGC
(V)
DESCRIPTION
The UPC3217GV and UPC3218GV are Silicon Monolithic
ICs designed for use as AGC amplifiers for digital CATV,
cable modems and IP telephony systems. These ICs consist
of a two stage gain control amplifier and a fixed video gain
amplifier. The devices provide a differential input and differ-
ential output for noise performance, which eliminates shield-
ing requirements.
The package is 8-pin SSOP (Shrink Small Outline Package)
suitable for surface mount.
These ICs are manufactured using NEC's 10 GHz f
T
NESAT餂浳櫸?AL silicon bipolar process. This process uses
silicon nitride passivation film. This material can protect chip
surface from external pollution and prevent corrosion/migra-
tion. Thus, these ICs have excellent performance, uniformity
and reliability.
NEC's stringent quality assurance and test procedures en-
sure the highest reliability and performance.
UPC3218GV
VOLTAGE GAIN vs.
AUTOMATIC GAIN CONTROL VOLTAGE
70
Voltage Gain, G
V
(dB)
T
A
= +25潞C
V
CC
= 5V
60 f = 45 MHz
P
in
= -60 dBm
50 Z
L
= 250鈩?/div>
40
30
20
10
0
0
1
2
3
4
5
Automatic Gain Control Voltage, V
AGC
(V)
APPLICATIONS
鈥?/div>
鈥?/div>
鈥?/div>
Digital CATV
Cable modem receivers
IP Telephony Receivers
ELECTRICAL CHARACTERISTICS
(T
A
= 25擄C, V
CC
= 5 V, Z
S
= 1 K
鈩?
Z
L
= 240
鈩?
f
IN
= 45 MHz, Unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
PARAMETERS AND CONDITIONS
DC Characteristics
Circuit Current (no input signal)
I
CC
RF Characterisitics
BW
Frequency Bandwidth, V
AGC
= 3 V
1
G
MAX
Maximum Gain , V
AGC
= 4 V
Minimum Gain, V
AGC
= 0.5 V
G
MIN
GCR
Gain Conrol Range, V
AGC
= 0.5 to 4 V
NF
AGC
Noise Figure, V
AGC
= 4 V at MAX Gain
V
OUT
Output Voltage, Single Ended Output
IM
3
Third Order Intermodulation Distortion,
f
IN1
= 44 MHz, f
IN2
= 45 MHz,
V
IN
= 30 dBmV per tone
2
Note:
1. -3dB with respect with respect to 10 MHz gain
2. V
AGC
is adjusted to establish VOUT = 1.25 V
P-P
per tone
UNITS
mA
MHz
dB
dB
dB
dB
V
P-P
dBc
UPC3217GV
S08
MIN
15
TYP
23
100
53
0
53
6.5
1.25
55
MAX
34
MIN
15
UPC3218GV
S08
TYP
23
100
63
10
53
3.5
1.25
55
MAX
34
50
-4.5
46.5
56
3.5
8.0
60
4.5
46.5
66
13.5
4.5
California Eastern Laboratories
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2
3
4
5
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7
