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AS1503-Z Datasheet(PDF) 1 Page - ams AG |
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AS1503-Z Datasheet(HTML) 1 Page - ams AG |
1 / 8 page Data Sheet AS1500/1/2/3 Revision 1.0, Oct 2004 Page 1 of 8 Key Features - 256-Position - Available in four Resistance values - AS1500 resistance 10kOhms - AS1501 resistance 20kOhms - AS1502 resistance 50kOhms - AS1503 resistance 100kOhms - Power Shutdown —Less than 1 µA - 3-Wire SPI-Compatible Serial Data Input - 10 MHz Update Data Loading Rate - 2.7 V to 5.5 V Single-Supply Operation - Temperature Range –40°C to +125°C - Package SO-8 - Compatible to AD8400 General Description The AS1500 is a digital potentiometer with 256 programmable steps. The values of the resistor can be controlled via 3 wire serial interface capable to handle programming rates up to 10MHz. The AS1500 is available in four different resistor values. The AS1500 incorporates a 10k Ω, the AS1501 a 20kΩ, the AS1502 a 50kΩ and the AS1503 a 100k Ω fixed resistor. The wiper contact taps the fixed resistor at points determined by the 8-bit digital code word. The resistance between the wiper and the endpoint of the resistor is linear. The switching action is performed in a way that no glitches occur. Furthermore the AS150x product family includes a shutdown mode, where it consumes less than 1µA. The AS150x is available in an 8-pin SOIC package. All parts are guaranteed to operate over the extended industrial temperature range of –40°C to +125°C. Applications - Line Impedance Matching - Volume Control, Panning - Mechanical Potentiometer Replacement - Power Supply Adjustment - Programmable Filters, Delays, Time Constants Figure 1 Pinout andfunctional Block Diagram of Digital Potentiometer AS150x family PRELIMINARY FACT SHEET Digital Potentiometer AS1500/AS1501/AS1502/AS1503 DATASHEET 8-Bit Latch 10 Bit Serial Latch 8 8 SDI CK CSN A W B VDD GND AS1500 W VDD GND CSN 7 6 2 3 AS150x Top View CK A B SDI 1 4 8 5 |
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