DS3908
Dual 64-Position Nonvolatile Digital Potentiometer with Buffered Output
The DS3908 features two nonvolatile (NV), low temperature-coefficient, variable digital potentiometers with 64 user-selectable positions.
Overview
- 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
- 3V to 5.5V Supply Voltage Range
- -40°C to +85°C Operating Temperature Range
- 14-Pin TDFN Package
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.
Applications
- Cell Phones/PDAs
- PIN Diode Biasing
- Portable Electronics
- Power Supply Calibration
Documentation
Data Sheet 1
Reliability Data 1
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
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