wms7171 Winbond Electronics Corp America, wms7171 Datasheet - Page 15

• Manufacturer Part Number: wms7171
• Description: Non-volatile Digital Potentiometers With Up/down 3-wire Interface, 10kohm, 50kohm, 100kohm Resistance 100 Taps Without / With Output Buffer
• Manufacturer: Winbond Electronics Corp America

11. TYPICAL APPLICATION CIRCUITS
FIGURE 6 – PROGRAMMABLE NON-INVERTING GAIN AMPLIFIER USING THE WMS7170/7171
FIGURE 5 – PROGRAMMABLE INVERTING GAIN AMPLIFIER USING THE WMS7170/7171
V
R
R
W = Wiper setting for WMS71XX
V
R
R
W = Wiper setting for WMS71XX
OUT
OUT
A
AB
A
AB
=
=
= Total resistance of potentiometer
= Total resistance of potentiometer
= - V
= V
R
R
AB
AB
IN
100
100
(100-W)
(100-W)
IN
(1+
R
R
R
R
B
A
B
A
WMS71XX
, R
, R
Vin
V
)
IN
B
B
=
=
R
R
100
100
R
AB
AB
R
A
A
*W
*W
WMS71XX
R
R
B
B
+
+
_
_
- 15 -
OP
AMP
OP
AMP
V
V
OUT
OUT
Publication Release Date: July 2003
WMS7170 / 7171
Revision 1.0