AD9235BCP-20EBZ Datasheet, PDF (30/40 Pages) Analog Devices – 12-Bit, 20/40/65 MSPS 3 V A/D Converter

AD9235
Data Sheet
EXTREF
1V MAX E1
R1
10kΩ
R9
10kΩ
C12 ^{P7 A}
0.1µF
GND GND
GND AVDD
P9 P8 P11
C13
C22
0.10µF 10µF
BCD
E
P10
GND
GND
C29
C9
10µF
0.10µF +
C11
0.1µF
GND
C7
0.1µF
GND
AVDD
1
P6
R5
1kΩ
MODE
22
P1
P5
R7
1kΩ
C8
0.1µF
GND
3
P3
R6
1kΩ
4
P4
GND
H1
GND MTHOLE6
123456
P2
H2
MTHOLE6
H3
MTHOLE6
H4
MTHOLE6
OVERRANGE BIT
(MSB)
C6
R42
0.1µF
0Ω
AMPIN
AVDD
R36
1kΩ
C15
J1 _0.1µF
AMP
L1
10nH
GND
X_OUT
T1
ADT 1–1 ΩT
R12
0Ω
R10
XFRIN1 1
NC ⁵
6
36Ω C26
2 CT ^{E 45 10pF}
3
4
PRI SEC
C16
0.1µF ^{C5 GND}
0.1µF
GND
GND
R4
33kΩ
R2
XX
C19
15pF
GND
R26
1kΩ
AVDD
GND
VIN+
C21 VIN–
10pF
GND
GND
AVDD
OR L1
FOR FILTER
OPTIONAL XFR
T2
GND
R11 _R3
36Ω _0Ω
FT C1–1–13
X_OUTB
X FRIN ¹
5
2
X_OUT
CT
AMPINB
3
4 _XOUTB
C18
PRI SEC
0.1µF
GND
C23
10pF
R15
33Ω
AVDD
R13 R25
GND
R3, R17, R18
R18
25Ω
R SINGLE ENDED
1kΩ 1kΩ
ONLY ONE SHOULD BE
ON BOARD AT A TIME GND
24 23 22 21 20 19 18 17
25 REFB
26 REFT
27 AVDD
28 AGND
29 VIN+
DRVDD 16
DGND 15
D7 14
DRVDD
GND
AD9235
U4
D6 13
D5 12
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
RP2 220Ω
30 VIN–
D4 11
1
16
31 AGND
D3 10
2
15
32 AVDD
D2 9
3
14
4
13
5
12
(LSB) 6
11
12345678
7
10
8
9
DRX
D13X
D12X
D11X
D10X
D9X
D8X
D7X
D6X
D5X
D4X
D3X
D2X
D1X
D0X
CLK
R8
1kΩ
P14
AVDD ^P13
GND
RP1 220Ω
GND
SENSE PIN SOLDERABLE JUMPER
E TO A EXTERNAL VOLTAGE DIVIDER
E TO B INTERNAL 1V REFERENCE (DEFAULT)
E TO C EXTERNAL REFERENCE
E TO D INTERNAL 0.5V REFERENCE
MODE PIN SOLDERABLE JUMPER
5 TO 1 TΩOS COMPLEMENT/DCS OFF
5 TO 2 TΩOS COMPLEMENT/DCS OFF
5 TO 3 OFFSET BINARY/DCS ON
5 TO 4 OFFSET BINARY/DCS OFF
Figure 54. LFCSP Evaluation Board Schematic, Analog Inputs and DUT
Rev. D | Page 30 of 40