
SPT
8
3/3/98
SPT9712
PIN ASSIGNMENTS
PIN FUNCTIONS
Name
Function
Out+
Analog Current Output
Out-
Complementary Analog Current Output
D1-D12
Digital Input Bits (D12 is the LSB)
Latch Enable
Latch Control Line
Ref In
Voltage Reference Input
Ref Out
Internal Voltage Reference Output
Normally Connected to Control Amp In
Ref GND
Ground Return For Internal Voltage Reference
and Amplifier
Control Amp In
Normally Connected to Ref Out If Not
Connected to External Reference
Control Amp Out Output of Internal Control Amplifier
Normally Connected to Ref In
RSet1
Connection for External Resistance Reference
When Using Internal Amplifier
Nominally 7.5 k
Analog Return
Analog Return Ground
Analog VEE
Analog Negative Supply (-5.2 V)
Digital VEE
Digital Negative Supply (-5.2 V)
DGND
Digital Ground Return
N/C
Not Connected
1Full-Scale Current Out=128(Control Amp In/RSet)
Analog VEE
RSet
N/C
Ref GND
Digital VEE
Ref Out
Control Amp Out
Latch Enable
DGND
D1 (MSB)
Control Amp In
Ref In
Analog VEE
IOut
24
23
22
21
20
19
18
17
16
15
28
27
26
25
5
6
7
8
9
10
11
12
13
14
1
2
3
4
Digital VEE
D6
D7
D8
D9
D10
D11
(LSB) D12
D2
D3
D4
D5
Analog Return
IOut
PDIP
25
24
23
22
21
20
19
5
6
7
8
9
10
11
18
17
16
15
14
13
12
26
27
28
1
2
3
4
Analog VEE
RSet
N/C
Ref GND
Digital VEE
Ref Out
Control Amp In
D6
D7
D8
D9
D10
D11
(LSB) D12
Latch
Enable
DGND
(MSB)
D1
D2
D3
D4
D5
Control
Amp
Out
Ref
In
Analog
V
EE
IOut
Analog
Return
Digital
V
EE
IOut
PLCC
ORDERING INFORMATION
PART NUMBER
DNL/INL
PACKAGE
SPT9712 AIN
±0.75/±1.0
28L PDIP
SPT9712 AIP
±0.75/±1.0
28L PLCC
SPT9712 BIN
±1.25/±1.5
28L PDIP
SPT9712 BIP
±1.25/±1.5
28L PLCC
Signal Processing Technologies, Inc. reserves the right to change products and specifications without notice. Permission is hereby expressly
granted to copy this literature for informational purposes only. Copying this material for any other use is strictly prohibited.
WARNING - LIFE SUPPORT APPLICATIONS POLICY - SPT products should not be used within Life Support Systems without the specific
written consent of SPT. A Life Support System is a product or system intended to support or sustain life which, if it fails, can be reasonably
expected to result in significant personal injury or death.
Signal Processing Technologies believes that ultrasonic cleaning of its products may damage the wire bonding, leading to device
failure. It is therefore not recommended, and exposure of a device to such a process will void the product warranty.