SUMMIT Microelectronics: Product Summary: SMP9317 - Nonvolatile DACPOT Electronic Potentiometer

SMP9317 Nonvolatile DACPOT™ Electronic Potentiometer With Up/Down Counter Interface

Product Numbers

Download the SMP9317 preliminary data sheet in PDF format.

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FEATURES

Digitally Controlled Electronic Potentiometer
7-bit Digital-Analog Converter (DAC)
- Independent reference inputs
- Differential non-linearity - +0.5LSB
- Integral Non-Linearity - +1LSB
V_OUT Value in EEPROM for Power-on Recall
- Equivalent to 128 step potentiometer
Unity Gain Op-Amp Drives +100µA
Simple Trimming Adjustment
- Up/Down Counter Style Operation
Low noise operation
"CLICKLESS" Transitions between DAC steps
No Mechanical Wearout Problem
- 1,000,000 stores
- 100 year retention
Ultra-Low Power, 0.5mW max at +5V
Operates from a 2.7V to 5.5V supply

pinout

OVERVIEW

The SMP9317 DACPOT™ trimmer is a 7-bit nonvolatile DAC designed to replace mechanical potentiometers. The SMP9317 includes a unity-gain amplifier to buffer the DAC output and enables V_OUT to swing from rail to rail. The DACPOT™ trimmer operates over a supply voltage range of 2.7V to 5.5V.

The SMP9317’s simple up/down counter input provides an ideal interface for automatic test equipment to dither and monitor the V_OUT voltage. This interface allows for quick and consistent calibration of even the most sophis-ticated systems.

The SMP9317 is a pin-compatible performance upgrade for other industry nonvolatile potentiometers. The SMP9317 offers higher resolution than these devices and provides ‘clickless’ transitions of V_OUT.

BLOCK DIAGRAM
block diagram

ORDERING INFORMATION
ordering info

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