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CS4121 - Low Voltage Precision Air-Core Low Voltage Precision Air-Core

General Description

The CS4121 is specifically designed for use with air-core meter movements.

The IC provides all the functions necessary for an analog tachometer or speedometer.

The CS4121 takes a speed sensor input and generates sine and cosine related output signals to differentially drive an air-core meter.

Key Features

  • s s s s s s Direct Sensor Input High Torque Output Low Pointer Flutter High Input Impedance Overvoltage Protection Accurate to 8V Functional to 6.5V (typ) Package Options 16 Lead PDIP (internally fused leads) CP+ SQOUT FREQIN Gnd Gnd COS+ COSVCC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Absolute Maximum Ratings Supply Voltage (.

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Datasheet Details

Part number CS4121
Manufacturer Cherry Semiconductor Corporation
File Size 186.10 KB
Description Low Voltage Precision Air-Core Low Voltage Precision Air-Core
Datasheet download datasheet CS4121 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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CS4121 CS4121 Low Voltage Precision Air-Core Tach/Speedo Driver Description The CS4121 is specifically designed for use with air-core meter movements. The IC provides all the functions necessary for an analog tachometer or speedometer. The CS4121 takes a speed sensor input and generates sine and cosine related output signals to differentially drive an air-core meter. Many enhancements have been added over industry standard tachometer drivers such as the CS289 or LM1819. The output utilizes differential drivers which eliminates the need for a zener reference and offers more torque. The device withstands 60V transients which decreases the protection circuitry required. The device is also more precise than existing devices allowing for fewer trims and for use in a speedometer.