TC9400COD

Overview

The TC9400COD is a Voltage-to-Frequency and Frequency-to-Voltage converter manufactured by Microchip Technology. It operates on single or dual supplies ranging from +8V to +15V or ±4V to ±7.5V. The device supports DC to 100 kHz frequency conversion with an integral nonlinearity of +/- 0.25% FSR. It features a gain temperature stability of +/- 25 ppm/°C typical and dissipates 27 mW typically. The component is housed in a 14-SOIC package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Utilizes charge balancing technique for linear voltage-to-frequency and frequency-to-voltage conversion
• Features open-drain outputs compatible with MOS, CMOS, and TTL logic
• Includes self-start circuitry to ensure proper operation upon power application
• Supports programmable scale factor via external components

Applications

• Microprocessor data acquisition systems
• Analog data transmission and recording
• Phase locked loops
• Frequency meters and tachometers
• Motor control circuits

Procurement Notes

Verify the specific suffix 'COD' corresponds to the SOIC-14 package and commercial temperature grade (0°C to +70°C). Confirm that the ordering information matches the manufacturer's current datasheet revision DS21483D. Ensure compatibility with required supply voltages and linearity specifications before procurement.

Selection Notes

Select this component when a low-power CMOS V/F or F/V converter is required with moderate linearity accuracy. Consider the 14-SOIC package for surface mount applications. Evaluate the need for external capacitors and resistors to set the bias point and full-scale frequency according to the design requirements.

Part Context

The TC9400 is part of the TC9400/9401/9402 family of converters. The TC9400 offers 0.05% linearity, distinguishing it from the higher precision TC9401 and the wider range TC9402. All variants share similar operational principles and pinouts but differ in accuracy specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.