Product Lines arrow µC & µC-based Consumer IC arrow Digital Potentiometers
Winpots (Digital Potentiometers)
The following products are EOL (End Of Life) and no longer supported by Winbond Electronics Corporation. Winbond makes every effort to inform all customers, distributors and agents about any change in status on product support, and strives to give 6 months’ notice of a planned product obsolescence in which time the customer can order lifetime buy quantities. In cases where an exact or functional replacement are available, we have listed the alternative below. In all cases, though, it is highly recommended to consult the product datasheet and/or contact your Winbond representative regarding these parts. Any product recommendations made for non-Winbond components are based on publicly available information only and are not guarantees of product performance or functional specifications.

Winbond America's line of Winpot ICs feature the most competitive digital pot solutions available. The devices offer high quality, low power consumption and competitive pricing—all features for today's demanding applications
WinPots feature ultra-low power programmable digital potentiometers boasting standby currents of less than 1µA. With resistance ranges from 10kOhms to 100kOhms, 256 taps, four programmable presets, and SPI, Up/Down, or Push-button interfaces, the WinPot ICs are ideal trimming and biasing solutions for industrial, consumer, and instrumentation applications. A selectable output buffer gives the user the option to use the WinPot as a variable resistance element or as a buffered voltage reference.
These ICs offer ultra-low power consumption, small form factor and patented resistor network—all features specifically needed in handheld, battery powered, space-critical applications. The chips are also ideal replacements for applications using mechanical potentiometers that require a high degree of performance, stability, precision adjustments or improved temperature coefficients.

  
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Key Features
Benefits
  • Ultra-Low Power Consumption in Standby - 1ua max
    with output buffer inactive
  • Small Form Factor - 3mm x 3mm for MSOP
  • Selectable Output Buffer - 3mA minimum drive
  • Low Cost Solution - Advanced 0.5um process
  • Four Programmable Presets with Power-on Recall
  • 256 Linear, SPI Interface
  • Competitive in cost and quality
    • Advanced process technology (0.5um)
    • Proprietary resistor network
  • Small footprint for space-critical tasks
    • MSOP, TSSOP, SOIC
  • Low standby current << 1uA
  • Non-volatile memory locations for users’ settings
    w/ power-on recall
  • On-chip buffer with on-off switchable
Applications
  • Industrial Control
    • Segment: Instrumentation, sensor circuits, …
    • Applications: Biasing and calibration of analog circuitry
  • Telecom
    • Segment: Wireless Base Stations (macro,micro & pico)
    • Applications: Power Amplifiers
    • Growth Driver: 2.5G, 3G installations
  • Optical Networking
    • Segments: Enterprise/Metro and Long Haul
    • Applications: Laser Biasing (VCSELs)/Directly modulated lasers, EA modulated CW lasers
    • Growth driver: Gigabit Ethernet/Need Bandwidth

Product Selection Guide

SPI Interface

Device
# of
Interface
# of
Output
End to End
Voltage
Resistance
Packages
Data
Product
[1]
Pots[2]
[3]
Taps
Buffer
Resistance
[4]
Increment
[5]
Sheet
Briefs
WMS7201
Single
SPI
256
Selectable
10,50,100K
Single/2.7-5.5V
Linear
M, P, S
WMS7202
Dual
SPI
256
Selectable
10,50,100K
Single/2.7-5.5V
Linear
P, S, T
WMS7204
Quad
SPI
256
Selectable
10,50,100K
Single/2.7-5.5V
Linear
P, S, T

[1] For exact part #, refer to part # ordering scheme in datasheets
[2] Single, Dual, or Quad
[3] SPI or Up/Down (3 wire)
[4] Single Voltage or Variable 2.7-5.5V Range
[5] M=MSOP, S=SOIC, P=PDIP, T=TSSOP

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Up/Down Interface

Device
# of
Interface
# of
Output
End to End
Voltage
Resistance
Packages
Data
Product
[1]
Pots[2]
[3]
Taps
Buffer
Resistance
[4]
Increment
[5]
Sheet
Briefs
WMS7100
Single
Up/Down
(3 wire)
256
No
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7101
Single
Up/Down
(3 wire)
256
Yes
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7110
Single
Up/Down
(3 wire)
128
No
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7111
Single
Up/Down
(3 wire)
128
Yes
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7120
Single
Up/Down
(3 wire)
64
No
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7121
Single
Up/Down
(3 wire)
64
Yes
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7130
Single
Up/Down
(3 wire)
32
No
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7131
Single
Up/Down
(3 wire)
32
Yes
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7140
Single
Up/Down
(3 wire)
16
No
10,50,100K
Single/
2.7-5.5V
Linear
M, P, S
WMS7141
Single
Up/Down
(3 wire)
16
Yes
10,50,100K
Single/2.7-5.5V
Linear
M, P, S
WMS7170
Single
Up/Down
(3 wire)
100
No
10,50,100K
Single/2.7-5.5V
Linear
M, P, S
WMS7171
Single
Up/Down
(3 wire)
100
Yes
10,50,100K
Single/2.7-5.5V
Linear
M, P, S

[1] For exact part #, refer to part # ordering scheme in datasheets
[2] Single, Dual, or Quad
[3] SPI or Up/Down (3 wire)
[4] Single Voltage or Variable 2.7-5.5V Range
[5] M=MSOP, S=SOIC, P=PDIP, T=TSSOP

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