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PDF ( 数据手册 , 数据表 ) S9318S

零件编号 S9318S
描述 Nonvolatile DACPOT Electronic Potentiometer With Up/Down Counter Interface
制造商 ETC
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S9318S 数据手册, 描述, 功能
SUMMIT
MICROELECTRONICS, Inc.
Nonvolatile DACPOT™ Electronic Potentiometer
With Up/Down Counter Interface
S9318
FEATURES
• Digitally Controlled Electronic Potentiometer
• 8-Bit Digital-to-Analog Converter (DAC)
– Independent Reference Inputs
– Differential Non-Linearity - ±0.5LSB max
– Integral Non-Linearity - ±1LSB max
• VOUT Value in E2PROM for Power-On Recall
– Equivalent to 256-Step Potentiometer
• Unity Gain Op Amp Drives up to 1mA
• 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
• Low Power, 1mW max at +5V
OVERVIEW
The S9318 DACPOT™ trimmer is an 8-bit nonvolatile
DAC designed to replace mechanical potentiometers.
The S9318 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 S9318’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 S9318 is a pin-compatible performance upgrade for
other industry nonvolatile potentiometers. The S9318
offers double the resolution of these devices and provides
‘clickless’ transitions of VOUT.
FUNCTIONAL BLOCK DIAGRAM
8-bit E2 PROM
VDD
UP/DN
INC
CS
Counter
&
Write
Control
8-bit
Data
Register
8-bit DAC
GND
-
AMP
+
VH
VOUT
VL
2016 ILL2.1
SUMMIT MICROELECTRONICS, Inc. • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com
© SUMMIT MICROELECTRONICS, Inc. 1999
2016-04 4/24/99
Characteristics subject to change without notice
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S9318SNonvolatile DACPOT Electronic Potentiometer With Up/Down Counter InterfaceETC
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