AD7837/AD7847
AD7847 PIN FUNCTION DESCRIPTION (DIP AND SOIC PIN NUMBERS)
Pin
Mnemonic
Description
11
12
13
14
15
16
17
18
19
10
CSA
Chip Select Input for DAC A. Active low logic input. DAC A is selected when this input is low.
Chip Select Input for DAC B. Active low logic input. DAC B is selected when this input is low.
Reference Input Voltage for DAC A. This may be an ac or dc signal.
Analog Output Voltage from DAC A.
Analog Ground for DAC A.
Positive Power Supply.
Negative Power Supply.
Analog Ground for DAC B.
Analog Output Voltage from DAC B.
Reference Input Voltage for DAC B. This may be an ac or dc signal.
Digital Ground.
CSB
VREFA
VOUTA
AGNDA
VDD
VSS
AGNDB
VOUTB
VREFB
DGND
DB11
WR
11
12
13
Data Bit 11 (MSB).
Write Input. WR is a positive edge triggered input which is used in conjunction with CSA and CSB
to write data to the DAC latches.
14–24
DB10–DB0
Data Bit 10 to Data Bit 0 (LSB).
AD7837 PIN CONFIGURATION
DIP AND SOIC
AD7847 PIN CONFIGURATION
DIP AND SOIC
1
2
24
23
22
21
20
19
18
17
16
15
14
13
1
2
24
23
22
21
20
19
18
17
16
15
14
13
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
A0
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
CS
CSA
CSB
REFA
R
FBA
3
3
V
V
V
V
REFA
4
4
OUTA
OUTA
5
5
AGNDA
AGNDA
AD7837
AD7847
6
6
V
V
DD
DD
TOP VIEW
TOP VIEW
(Not to Scale)
(Not to Scale)
7
7
V
V
SS
SS
8
8
AGNDB
AGNDB
9
9
V
V
OUTB
OUTB
10
11
12
10
11
12
V
V
A1
DB9
REFB
REFB
DB10
LDAC
WR
DGND
DGND
DB11
R
WR
FBB
REV. C
–5–
ADI [ ADI ]
