wms7204 Winbond Electronics Corp America, wms7204 Datasheet - Page 24

• Manufacturer Part Number: wms7204
• Description: 256-tap Quad-channel Non-volatile Digital Potentiometer
• Manufacturer: Winbond Electronics Corp America

11. TYPICAL APPLICATION CIRCUIT
FIGURE 9 – PROGRAMMABLE NON-INVERTING GAIN AMPLIFIER USING THE WMS7204
FIGURE 8 – PROGRAMMABLE INVERTING GAIN AMPLIFIER USING THE WMS7204
V
R
R
D = Wiper setting for WMS7204
V
R
R
D = Wiper setting for WMS7204
OUT
OUT
A
AB
A
AB
=
=
= Total resistance of potentiometer
= Total resistance of potentiometer
= - V
= V
R
R
AB
AB
IN
(256
(256
IN
256
256
(1+
R
R
R
R


B
A
D)
D)
B
A
WMS7204
Vin
)
, R
, R
B
B
=
=
R
R
256
R
V
A
AB
R
256
IN
A
WMS7204
AB
D
D
R
R
B
B
+
+
_
_
- 24 -
OP
AMP
OP
AMP
V
V
OUT
OUT
WMS7204