器件名称: SMP9317S
功能描述: Nonvolatile DACPOT
文件大小: 38.41KB 共6页
简 介:SUMMIT
MICROELECTRONICS, Inc.
SMP9317
Nonvolatile DACPOT Electronic Potentiometer With Up/Down Counter Interface
FEATURES Digitally Controlled Electronic Potentiometer 7-Bit Digital-to-Analog Converter (DAC) – Independent Reference Inputs – Differential Non-Linearity - +0.5LSB – Integral Non-Linearity - +1LSB VOUT Value in EEPROM for Power-On Recall – Equivalent to 128-Step Potentiometer Unity Gain Op Amp Drives ±100A Simple Trimming Adjustment – Up/Down Counter Style Operation Low Noise Operation “Clickless” Transitions between DAC Steps No Mechanical Wearout Problem – 1,000,000 Stores (typical) – 100 Year Data Retention Operation from +2.7V to +5.5V Supply Ultra-Low Power, 0.5mW max at +5V
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 VOUT 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 VOUT voltage. This interface allows for quick and consistent calibration of even the most sophisticated 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 VOUT.
FUNCTIONAL BLOCK DIAGRAM
VDD
7-bit E2 PROM
VH……
