AD8331_15 Datasheet, PDF (35/56 Pages) Analog Devices – Ultralow Noise VGAs with Preamplifier and Programmable R

AD8331/AD8332/AD8334
S3
E_IN2
TP5
AD8332ARU
TP3
(RED) +5V
TB1
+5V
TP4
(BLACK)
TB2
GND
+ _C46
1µF
L7
120nH FB _+5VGA
C50
0.1µF
C49
L12
0.1µF
120nH FB
CFB2
18nF
RFB2
274Ω
C80
JP5
22pF
IN2
+5VLNA
C41 C74
0.1µF 1nF
1
LMD2
2 _INH2
3 _VPS2
4
LON2
LMD1 ²⁸
C70
TP6
0.1µF
L13
C60
120nH FB 0.1µF
INH1 ²⁷
JP6
IN1
C79
22pF
CFB1
S1
E_IN1
18nF
VPS1 ²⁶
RFB1
+5VLNA
274Ω
LON1 ²⁵
L6
120nH FB _+5VLNA
C51
0.1µF
C53
0.1µF
5
LOP2
LOP1 ²⁴
6 _COM2
COM1 ²³
C42
0.1µF
C59
0.1µF
7
VIP2
22
VIP1
VCM1
JP13
8 _VIN2
C48 C78
0.1µF 1nF 9
VCM2
TP2 GAIN
TP7 GND C83
1nF
R3
(R_CLMP)
C69
0.1µF
C68
1nF
OPTIONAL 4-POLE LOW-PASS
FILTER
V_IN+B
L19
SAT
L17
SAT
JP8
DC2H
R27
100Ω
C54
L11
0.1µF 120nH FB
10
GAIN
11 _RCLMP
12
VOH2
13 _VOL2
VIN1 ²¹
VCM1
20
VCM1
C77
1nF
C43
0.1µF
19
HILO
+5VGA
18
ENB
ENABLE
JP16
DISABLE
+5VGA
HI GAIN
JP10
LO GAIN
17
VOH1
16
VOL1
R24
100Ω
L9
120nH FB
JP9
C58
0.1µF
OPTIONAL 4-POLE LOW-PASS
FILTER
L1
SAT
L15
SAT
V_IN+A
C66
SAT
V_IN–B
C67
L20 _SAT
SAT
L18 JP12
SAT
C55
L10
0.1µF 120nH FB
JP7
DC2L
R26
100Ω
14
COMM
15
VPSV
+5VGA
C45 _C85
0.1µF _1nF
L8
120nF FB
JP17
C56
0.1µF
L14
SAT
R25
100Ω
JP10
C64
SAT _L16
SAT
C65
SAT
V_IN–A
Figure 91. Schematic, TGC, VGA Section Using an AD8332 and AD9238
Rev. G | Page 35 of 56