TC500ACOE

Analog Front End (AFE) Overview

The TC500ACOE is a precision analog front-end (AFE) featuring a dual-slope analog-to-digital converter with a maximum resolution of 17 bits plus sign. It operates on a single supply voltage ranging from 4.5 V to 7.5 V, utilizing an internal negative power supply converter for simplified system design. The device employs a flexible 3-wire serial interface consisting of control inputs A and B and a zero-crossing comparator output. Key electrical parameters include a minimum operating temperature of 0°C and a maximum of +70°C. It is housed in a 16-lead SOIC surface-mount package.

Analog Front End (AFE) Feature Summary

• 17-bit resolution dual-slope ADC with user-adjustable conversion speed
• Integrated negative power supply converter for single-supply operation
• Low power dissipation of 10 mW
• Flexible 3-wire serial processor interface

Analog Front End (AFE) Applications

• Precision industrial process control systems
• High-resolution weighing scales
• Portable instrumentation requiring low power consumption

Analog Front End (AFE) Part Context

The TC500ACOE belongs to the TC500A family of precision analog front ends. This series includes variants such as the TC500 (base 16-bit), TC510 (single-supply), and TC514 (with multiplexer). The TC500A specifically offers improved linearity compared to the base TC500, enabling operation up to 17 bits. All devices in this family share the same processor control interface and conversion phases.

Analog Front End (AFE) Replacement Considerations

For pin-compatible alternatives within the same family, consider the TC500COI or TC510COI. Verify that the substitute part supports the required 17-bit resolution and single-supply voltage range. Ensure the interface logic matches the existing 3-wire serial protocol.