Datasheet
Data Sheet AD9228
Rev. E | Page 43 of 56
MODE PIN
POSITIVE GAIN SLOPE = 0-1.0V
NEGATIVE GAIN SLOPE = 2.25V-5.0V
HILO PIN
HI GAIN RANGE = 2.25V-5.0V
LO GAIN RANGE = 0-1.0V
R414
10k
L410
120nH
C420
0.018µF
C415
0.018µF
R415
274
C410
0.1µF
C425
0.1µF
C423
0.1µF
C424
0.1µF
L409
120nH
C418
22pF
C417
0.1µF
C416
0.1µF
C414
0.1µF
R417
10k
C421
22pF
C419
0.1µF
C422
0.1µF
INH2 INH1
AVDD_5V
AVDD_5V
C426
10µF
C413
10µF
OPTIONAL VGA DRIVE CIRCUIT FOR CHANNEL A AND CHANNEL B
C409
0.1µF
R411
10k
R412
10k
DNP
C403
DNP
L404
0
R403
DNP
L408
0
24
17
20
23
18
22
19
21
R404
DNP
L406
0
L405
0
L402
0
L403
0
L407
0
C408
0.1µF
C407
0.1µF
C406
0.1µF
C405
0.1µF
R410
187
R409
187
R408
187
R407
187
C402
DNP
L401
0
C401
DNP
R405
374
R406
374
CH_A
CH_B
CH_B
CH_A
AVDD_5V
AVDD_5V
AVDD_5V
C404
DNP
R401
DNP
R402
DNP
31
10
26
25
14
27
3
6
4
5
1
8
32
9
15
16
VG
28
13
29
12
30
11
2
7
COM1
COM2
ENBL
ENBV
GAIN
HILO
INH1
INH2
LMD1
LMD2
LON1
LON2
LOP1
LOP2
MODE
NC
RCLMP
VCM1
VCM2
VIN1
VIN2
VIP1
VIP2
VOH1
VOH2
VOL1
VOL2
VPS1
VPS2
VPSV
AD8332
U401
COMM
COMM
R413
10k
DNP
R424
10k
DNP
C412
0.1µF
C411
1000pF
RCLAMP PIN
HILO PIN = LO = ±50mV
HILO PIN = H = ±75mV
05727-018
POWER DOWN ENABLE
(0–1V = DISABLE POWER)
R416
274
POPULATE L401-L408 WITH 0
RESISTORS OR DESIGN YOUR
OWN FILTER.
Y1
VCC
Y2A2
GND
A1
SPI CIRCUITRY FROM FIFO
SDIO_ODM
AVDD_DUT
R431
1k
R432
1k
R433
1k
AVDD_3.3V
1
2
34
5
6
NC7WZ07
U403
R425
10k
AVDD_DUT
RESET/REPROGRAM
1
2
3
4
S401
+3.3V = NORMAL OPERATION = AVDD_3.3V
+5V = PROGRAMMING = AVDD_5V
AVDD_5V
AVDD_3.3V
J402
C427
0.1µF
R418
4.75k
PIC12F629
R419
261
4
3
1
2
5
6
8
7
U402
CR401
GP0
GP1
GP2
GP4
GP5
VDD
VSS
MCLR/
GP3
REMOVE WHEN USING
OR PROGRAMMING PIC (U402)
R427
0
R420
0
R428
0
R426
0
SDO_CHA
SDI_CHA
SCLK_CHA
CSB1_CHA
C429
0.1µF
SCLK_DTP
CSB_DUT
AVDD_DUT
Y1
VCC
Y2A2
GND
A11
2
34
5
6
U404
R430
10k
R429
10k
NC7WZ16
C428
0.1µF
PIC PROGRAMMING HEADER
MCLR/GP3
GP0
GP1
PICVCC
MCLR/GP3
GP0
GP1
PICVCC
9
7
5
3
1
10
8
6
4
2
J401
E401
R421
0-DNP
R423
0-DNP
R422
0-DNP
OPTIONAL
DNP: DO NOT POPULATE
Figure 76. Evaluation Board Schematic, Optional DUT Analog Input Drive and SPI Interface Circuit (Continued)