WMS7204010P datasheet(21/29 Pages) WINBOND

Part #	WMS7204010P

Description	256-TAP NON-VOLATILE DIGITAL POTENTIOMETER

PDF	29 Pages

Scroll/Zoom	100%

Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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21 / 29 page

WMS7201

Publication Release Date: January 2003

- 21 -

Revision 1.1

10.1 TEST CIRCUITS

FIGURE 7 – TEST CIRCUITS

Potentiometer divider nonlinearity error

test circuit (INL, DNL)

*Assume infinite input impedance

V+

VMS*

V+ = VDD

1LSB= V+/255

WMS7201

Resistor position nonlinearity error test

circuit (Rheostat Operation: R-INL, R-DNL)

*Assume infinite input impedance

No Connection

VMS*

WMS7201

Wiper resistance test circuit

*Assume infinite input impedance

VMS*

WMS7201

IW = VDD/RTotal

RW = VMS/IW

Power supply sensitivity test circuit (PSS, PSRR)

*Assume infinite input impedance

V+

V+ = VDD±10%

VMS*

PSRR(dB) = 20LOG(

)

∆VMS

∆VDD

PSS(%/%) = ∆VMS

∆VDD

WMS7201

VIN

+5V

2.5V DC

Offset

VOUT

Capacitance test circuit

WMS7201

VIN

+5V

2.5V DC

VOUT

OFFSET

GND

Gain vs. frequency test circuit

WMS7204010P Datasheet(PDF) 21 Page - Winbond

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