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CS4172 - Single Air-Core Gauge Driver

General Description

The CS4172 is a monolithic BiCMOS integrated circuit used to translate a digital 10-bit word from a microprocessor/microcontroller to complementary DC outputs.

The DC outputs drive an air-core meter commonly used in vehicle instrument panels.

Key Features

  • s Serial Input Bus s 2 MHz Operating Frequency s Tangential Drive Algorithm s 80mA Drive Circuits s 0.5¡ Accuracy (Typ. ) s Power-On-Reset s Protection Features Output Short Circuit Overtemperature Package Options 16 Lead PDIP SINSIN+ Gnd VBB SO 1 COS+ COSGnd Gnd NC ST CS SCLK Block Diagram VCC VBB SI VCC OE POR LOGIC SI SCLK CS SIN+ Serial to Parallel Shift Register VTOP D0 Ð D6 16 Lead SO Wide (internally fused leads) SIN1 7 Bit DAC VVAR VBAT MUX SIN Ð COS+ COSSO Gnd Gnd ST CS.

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Datasheet Details

Part number CS4172
Manufacturer Cherry Semiconductor Corporation
File Size 158.40 KB
Description Single Air-Core Gauge Driver
Datasheet download datasheet CS4172 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CS4172 CS4172 Single Air-Core Gauge Driver Description The CS4172 is a monolithic BiCMOS integrated circuit used to translate a digital 10-bit word from a microprocessor/microcontroller to complementary DC outputs. The DC outputs drive an air-core meter commonly used in vehicle instrument panels. The 10 bits of data are used to linearly control the quadrature coils of the meter directly with a 0.35¡ resolution and ±1.0¡ accuracy over the full 360¡ range of the gauge. The interface from the microcontroller is by a Serial Peripheral Interface (SPI) compatible serial connection using up to a 2MHz shift clock rate. The digital code, which is directly proportional to the desired gauge pointer deflection, is shifted into a DAC and multiplexer.