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AD8402AN100 Datasheet(PDF) 7 Page - Analog Devices

Part # AD8402AN100
Description  1-/2-/4-Channel Digital Potentiometers
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD8402AN100 Datasheet(HTML) 7 Page - Analog Devices

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AD8400/AD8402/AD8403
REV. B
–7–
AD8400 PIN DESCRIPTIONS
Pin
Name
Description
1
B1
Terminal B RDAC
2
GND
Ground
3
CS
Chip Select Input, Active Low. When CS
returns high data in the serial input register is
loaded into the DAC register.
4
SDI
Serial Data Input
5
CLK
Serial Clock Input, positive edge triggered
6VDD
Positive power supply, specified for operation
at both +3 V and +5 V.
7
W1
Wiper RDAC, addr = 002
8
A1
Terminal A RDAC
AD8402 PIN DESCRIPTIONS
Pin
Name
Description
1
AGND
Analog Ground*
2
B2
Terminal B RDAC #2
3
A2
Terminal A RDAC #2
4
W2
Wiper RDAC #2, Addr = 012
5
DGND
Digital Ground*
6
SHDN
Terminal A open circuit. Shutdown controls
Variable Resistors #1 and #2
7
CS
Chip Select Input, Active Low. When CS
returns high data in the serial input register is
decoded based on the address bits and loaded
into the target DAC register.
8
SDI
Serial Data Input
9
CLK
Serial Clock Input, positive edge triggered
10
RS
Active low reset to midscale; sets RDAC
registers to 80H
11
VDD
Positive power supply, specified for operation
at both +3 V and +5 V
12
W1
Wiper RDAC #1, addr = 002
13
A1
Terminal A RDAC #1
14
B1
Terminal B RDAC #1
*All AGNDs must be connected to DGND.
AD8403 PIN DESCRIPTIONS
Pin
Name
Description
1
AGND2
Analog Ground #2*
2
B2
Terminal B RDAC #2
3
A2
Terminal A RDAC #2
4
W2
Wiper RDAC #2, addr = 012
5
AGND4
Analog Ground #4*
6
B4
Terminal B RDAC #4
7
A4
Terminal A RDAC #4
8
W4
Wiper RDAC #4, addr = 112
9
DGND
Digital Ground*
10
SHDN
Active Low Input. Terminal A open circuit.
Shutdown controls variable resistors #1
through #4
11
CS
Chip Select Input, Active Low. When CS
returns high data in the serial input register
is decoded based on the address bits and
loaded into the target DAC register.
12
SDI
Serial Data Input
13
SDO
Serial Data Output, Open Drain transistor
requires pull-up resistor
14
CLK
Serial Clock Input, positive edge triggered
15
RS
Active low reset to midscale; sets RDAC
registers to 80H
16
VDD
Positive power supply, specified for
operation at both +3 V and +5 V
17
AGND3
Analog Ground #3*
18
W3
Wiper RDAC #3, addr = 102
19
A3
Terminal A RDAC #3
20
B3
Terminal B RDAC #3
21
AGND1
Analog Ground #1*
22
W1
Wiper RDAC #1, addr = 002
23
A1
Terminal A RDAC #1
24
B1
Terminal B RDAC #1
*All AGNDs must be connected to DGND.


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