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CS4122XDWF24 데이터시트(PDF) 1 Page - ON Semiconductor |
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CS4122XDWF24 데이터시트(HTML) 1 Page - ON Semiconductor |
1 / 10 page © Semiconductor Components Industries, LLC, 2004 May, 2004 − Rev. 8 1 Publication Order Number: CS4122/D CS4122 Triple Air−Core Gauge Driver with Serial Input Bus The CS4122 converts digital data from a microprocessor to complementary DC outputs and drives air−core meter movements for vehicle instrument panels. It is optimized for one 360 ° gauge and two 112 ° gauges. The digital data controls the voltage applied to the quadrature coils of the meters with a 0.35 ° resolution for the major (360 °) gauge and 0.44° resolution for the minor (112°) gauges. The accuracy is ±0.75° for the major and ±1.00° for the minors. The interface from the microcontroller is by a SPI compatible serial connection using up to a 2.0 MHz shift clock rate. The digital code is shifted into the appropriate DAC and multiplexer. These two blocks provide a tangential conversion function to change the digital data into the appropriate DC coil voltage. The major gauge driver can position a pointer anywhere within a 360 ° circle while the minor gauge drivers are limited to an arc of 112.2 °. The output buffers are capable of 70 mA per coil and are protected against output short circuit conditions. A thermal protection circuit limits the junction temperature to approximately 160 °C. An open−drain fault output goes low when any of the outputs are shorted or the device is in a thermal shutdown state. This ASIC is designed on POWERSENSE ™ 3.0. Features • Serial Input Bus • 2.0 MHz Operating Frequency • Independently Addressable Gauges • Tangential Drive Algorithm • 70 mA Drive Circuits • 0.75° Major Accuracy • Power−On−Reset • Protection Features ♦ Short Circuit ♦ Overtemperature • Internally Fused Leads in SO−24L Package SO−24L DWF SUFFIX CASE 751E 1 24 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week MARKING DIAGRAM 1 CS4122 AWLYYWW 24 PIN CONNECTIONS GND GND GND GND GND GND GND GND COS− SIN+ COS+ SIN− SI CS SO SCLK C2− VBB/2 C2+ C1+ 124 FAULT VCC VBB C1− Device Package Shipping† ORDERING INFORMATION CS4122XDWF24 SO−24L 31 Units/Rail CS4122XDWFR24 SO−24L 1000 Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com |
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