The DS3908 contains two nonvolatile (NV) digital potentiometers with programmable-gain amplifiers buffering the wiper outputs. The potentiometer position and amplifier gain are controlled through an I²C-compatible serial bus. The DS3908 operates in both 3.3V and 5V systems and features a write-protect pin that locks the position of the potentiometers and gain registers. Up to eight DS3908s can be placed on a single I²C bus.
Key Features
Applications/Uses
Two 64-Position Linear Taper Potentiometers
Integral Wiper Buffering Amplifiers With Selectable Gains of 1V/V, 2V/V, or 4V/V
100kΩ Potentiometer End-to-End Resistance
Low Potentiometer Temperature Coefficient
Nonvolatile Wiper and Gain Storage
I²C-Compatible Interface
Write-Protect Pin Prevents Accidental Field Reprogramming
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-1 of 1
DS3908
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
DS3908N+T&R
Active
TDFN-EP;14 pin;9.6 mm²
Outline Drawing: 21-0137 (PDF)
Land Pattern: 90-0062 (PDF)
Use pkgcode/variation: T1433+1*
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