WMS7140010P WINBOND [Winbond], WMS7140010P Datasheet - Page 14

• Manufacturer Part Number: WMS7140010P
• Description: NONVOLATILE DIGITAL POTENTIOMETERS WITH UP/DOWN (3-WIRE) INTERFACE, 10KOHM, 50KOHM, 100KOHM RESISTANCE 16 TAPS WITH OPTIONAL OUTPUT BUFFER
• Manufacturer: WINBOND [Winbond]

Resistor position nonlinearity error test
circuit (Rheostat Operation: R-INL, R-DNL)
Potentiometer divider nonlinearity error
test circuit (INL, DNL)
10.1 T
V+
*Assume infinite input impedance
*Assume infinite input impedance
Wiper resistance test circuit
No Connection
*Assume infinite input impedance
EST
WMS71xx
V
V
B
A
V
C
WMS71xx
V
V
W
IRCUITS
B
A
V
V
WMS71xx
V
A
B
V
V
W
MS
W
*
I
R
W
1LSB= V+/256
V+ = V
W
= V
V
I
W
= V
MS
DD
I
W
*
MS
DD
/R
/I
FIGURE 4 – TEST CIRCUITS
Total
W
V
MS
*
- 14 -
Power supply sensitivity test circuit (PSS, PSRR)
OFFSET
V
~
W
+
GND
2.5V DC
V
IN
V
IN
Gain vs . frequency test circuit
*Assume infinite input impedance
~
Capacitance test circuit
V
V
V
2.5V DC
Offset
B
A
A
WMS71xx
V
WMS71xx
W
V
V
WMS71xx
PSRR(dB) = 20LOG (
PSS(%/% ) = ∆ V
V
A
V
V
B
+
W
W
= V
DD
WMS7140/1
± 10%
+5V
V
B
V
∆ V
+5V
MS
MS
DD
*
V
∆ V
∆ V
OUT
V
MS
DD
OUT
)