AD13280
PIN FUNCTION DESCRIPTIONS
Pin No.
Name
Function
1, 35
2, 3, 9, 10, 13, 16
SHIELD
AGNDA
Internal Ground Shield between Channels
A Channel Analog Ground. A and B grounds should be connected as close to
the device as possible.
4
A–IN
Inverting Differential Input (Gain = 1).
5
6
7
8
11
12
14
15
A+IN
Noninverting Differential Input (Gain = 1).
Single-Ended Amplifier Output (Gain = 2).
Analog Input for A Side ADC (Nominally 0.5 V).
Analog Input for A Side ADC (Nominally 1.0 V).
A Channel Analog Negative Supply Voltage (Nominally –5.0 V or –5.2 V).
A Channel Analog Positive Supply Voltage (Nominally 5.0 V).
Complement of Encode; Differential Input.
Encode Input; Conversion Initiated on Rising Edge.
A Channel Digital Positive Supply Voltage (Nominally 5.0 V/ 3.3 V).
No Connect.
AMP-OUT-A
AMP-IN-A-1
AMP-IN-A-2
AVEEA
AVCCA
ENCODEA
ENCODEA
DVCCA
17
18, 19, 37, 38
NC
20–25, 28–33
26, 27
34
36
39–42, 45–52
43, 44
53
D0A–D11A
DGNDA
DROUTA
DROUTB
D0B–D11B
DGNDB
DVCCB
Digital Outputs for ADC A. D0 (LSB).
A Channel Digital Ground.
Data Ready A Output.
Data Ready B Output.
Digital Outputs for ADC B. D0 (LSB).
B Channel Digital Ground.
B Channel Digital Positive Supply Voltage (Nominally 5.0 V/ 3.3 V).
54, 57, 60, 61, 67, 68
AGNDB
B Channel Analog Ground. A and B grounds should be connected as close to the
device as possible.
55
56
58
59
62
63
64
65
66
ENCODEB
ENCODEB
AVCCB
Encode Input; Conversion Initiated on Rising Edge.
Complement of Encode; Differential Input.
B Channel Analog Positive Supply Voltage (Nominally 5.0 V).
B Channel Analog Negative Supply Voltage (Nominally –5.0 V or –5.2 V).
Analog Input for B Side ADC (Nominally 1.0 V).
Analog Input for B Side ADC (Nominally 0.5 V).
Single-Ended Amplifier Output (Gain = 2).
AVEEB
AMP-IN-B-2
AMP-IN-B-1
AMP-OUT-B
B+IN
Noninverting Differential Input (Gain = 1).
Inverting Differential Input (Gain = 1).
B–IN
REV. 0
–5–
ADI [ ADI ]
