AD5228 Data Sheet
Rev. B | Page 6 of 18
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
04422-0-003
AD5228
PU
1
PD
2
A
3
GND
4
V
DD
PRE
B
W
8
7
6
5
Figure 6. SOT-23-8 Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1
PU
Push-Up Pin.
Connect to the external pushbutton. Active low. A 100 kΩ pull-up resistor is connected to V
DD
.
2
PD
Push-Down Pin.
Connect to the external pushbutton. Active low. A 100 kΩ pull-up resistor is connected to V
DD
.
3 A Resistor Terminal A. GND ≤V
A
≤ V
DD
.
4 GND Common Ground.
5 W Wiper Terminal W. GND ≤ V
W
≤ V
DD
.
6 B Resistor Terminal B. GND ≤ V
B
≤ V
DD
.
7 PRE
Power-On Preset. Output = midscale if PRE = GND; output = zero scale if PRE = V
DD
. Do not let the PRE pin float.
No pull-up resistor is needed.
8 V
DD
Positive Power Supply, 2.7 V to 5.5 V.
