Datasheet

AD5280/AD5282
Rev. C | Page 6 of 28
SDA
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
A
W
B
SHDN
SCL
V
DD
1
2
3
4
5
6
14
13
12
11
10
9
7 8
O
1
V
L
O
2
GND
AD1
V
SS
AD5280
TOP VIEW
AD0
02929-002
O
1
A
1
W
1
V
DD
SHDN
B
1
SCL
A
2
W
2
B
2
V
SS
GND
V
L
AD1
1 16
2 15
3 14
Figure 4. AD5280 Pin Configuration
4 13
5 12
6
7
SDA
8
11
10
9
AD0
AD5282
TOP VIEW
02929-003
Figure 5. AD5282 Pin Configuration
Table 4. AD5280 Pin Function Descriptions
Pin No. Mnemonic Description
1 A Resistor Terminal A.
2 W Wiper Terminal W.
3 B Resistor Terminal B.
4 V
DD
Positive Power Supply. Specified for
operation from 5 V to 15 V (sum of |V
DD
|
+ |V
SS
| ≤ 15 V).
5
SHDN
Active Low, Asynchronous Connection
of Wiper W to Terminal B and Open
Circuit of Terminal A. RDAC register
contents unchanged. SHDN should tie
to V
L
if not used. Can also be used as a
programmable preset in power-up.
6 SCL Serial Clock Input.
7 SDA Serial Data Input/Output.
8 AD0
Programmable Address Bit 0 for
Multiple Package Decoding. Bit AD0
and Bit AD1 provide four possible
addresses.
9 AD1
Programmable Address Bit 1 for
Multiple Package Decoding. Bit AD0
and Bit AD1 provide four possible
addresses.
10 GND Common Ground.
11 V
SS
Negative Power Supply. Specified for
operation from 0 V to −5 V (sum of |V
DD
|
+ |V
SS
| ≤ 15 V).
12 O
2
Logic Output Terminal O
2.
13 V
L
Logic Supply Voltage. Needs to be less
than or equal to V
DD
and at the same
voltage as the digital logic controlling
the AD5280.
14 O
1
Logic Output Terminal O
1
.
Table 5. AD5282 Pin Function Descriptions
Pin No. Mnemonic Description
1 O
1
Logic Output Terminal O
1
.
2 A
1
Resistor Terminal A
1
.
3 W
1
Wiper Terminal W
1
.
4 B
1
Resistor Terminal B
1
.
5 V
DD
Positive Power Supply. Specified for
operation from 5 V to 15 V (sum of |V
DD
|
+ |V
SS
| ≤ 15 V).
6
SHDN
Active Low, Asynchronous Connection
of Wiper W to Terminal B and Open
Circuit of Terminal A. RDAC register
contents unchanged. SHDN should tie
to V
L
if not used. Can be also used as a
programmable preset in power-up.
7 SCL Serial Clock Input.
8 SDA
Serial Data Input/Output.
9 AD0
Programmable Address Bit 0 for
Multiple Package Decoding. Bit AD0
and Bit AD1 provide four possible
addresses.
10 AD1
Programmable Address Bit 1 for
Multiple Package Decoding. Bit AD0
and Bit AD1 provide four possible
addresses.
11 GND
Common Ground.
12 V
SS
Negative Power Supply. Specified for
operation from 0 V to −5 V (sum of |V
DD
|
+ |V
SS
| ≤ 15 V).
13 V
L
Logic Supply Voltage. Needs to be less
than or equal to V
DD
and at the same
voltage as the digital logic controlling
the AD5282.
14 B
2
Resistor Terminal B
2
.
15 W
2
Wiper Terminal W
2
.
16 A
2
Resistor Terminal A
2
.