TC9401EJD

Overview

The TC9401EJD is a Voltage-to-Frequency and Frequency-to-Voltage converter manufactured by Microchip Technology. It utilizes low-power CMOS technology to provide high-accuracy signal conversion. The device offers a linearity of 0.01% in V/F mode and 0.02% in F/V mode at full scale. It supports DC to 100 kHz operation for both modes. The component operates on single or dual supplies ranging from +8V to +15V or ±4V to ±7.5V, with a typical power dissipation of 27 mW.

Feature Summary

• Provides highly accurate voltage-to-frequency and frequency-to-voltage conversion using charge balancing techniques.
• Features open-drain outputs compatible with MOS, CMOS, and TTL logic families.
• Includes self-start circuitry to ensure proper operation upon power application.
• Offers programmable scale factors and gain temperature stability.

Applications

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

Procurement Notes

Verify the specific suffix 'EJD' corresponds to the extended temperature range (-40°C to +85°C) and the 14-pin CERDIP package configuration. Confirm that the ordering information matches the manufacturer's current datasheet revision DS21483D. Ensure compatibility with required supply voltages and reference impedance specifications before procurement.

Selection Notes

Select the TC9401 variant specifically when a linearity error of 0.01% (V/F) and 0.02% (F/V) is required, distinguishing it from the TC9400 and TC9402 models. The 'E' suffix indicates suitability for industrial temperature ranges up to +85°C. The 'J' designation confirms the ceramic dual in-line package format suitable for through-hole mounting.

Part Context

This component belongs to the TC9400/9401/9402 family of converters produced by Microchip Technology. These devices are designed as low-cost alternatives utilizing CMOS processing. The family shares identical pinouts and functional block diagrams, differing primarily in accuracy grades and operating temperature ranges defined by their respective suffixes.

Replacement Considerations

Direct replacements within the same family include the TC9400EJD and TC9402EJD. Note that these substitutes offer lower linearity accuracies (0.05% and 0.25%, respectively). Verify if the reduced precision meets the system requirements before substitution.