ADC08034CIWMX

Analog To Digital Converters (ADC) Overview

The ADC08034CIWMX is an obsolete 8-bit successive approximation analog-to-digital converter (ADC) from Texas Instruments, part of the ADC0803x family. It features a 4-channel input multiplexer with configurable single-ended or differential modes and includes an on-chip track/hold function. The device operates on a single 5V supply (4.5V to 6.3V) and provides serial digital data output compatible with NSC MICROWIRE standards. Key specifications include a maximum conversion time of 8 μs at a 1 MHz clock frequency, a total unadjusted error of ±1 LSB for the 'C' grade, and an integrated 2.6V band-gap voltage reference. It is housed in a 14-pin SOIC package.

Analog To Digital Converters (ADC) Feature Summary

• 8-Bit SAR Architecture: Provides high-speed conversion with a maximum time of 8 μs at 1 MHz clock frequency.
• Configurable Multiplexer: Supports 4 analog inputs with software-selectable single-ended or differential configurations.
• Integrated Reference: Includes an on-chip 2.6V band-gap derived voltage reference for stable operation.
• Serial Interface: Utilizes a 3-wire serial I/O interface (DI, DO, CLK) compliant with MICROWIRE standards, minimizing pin count.

Analog To Digital Converters (ADC) Applications

• Digitizing automotive sensors
• Process control monitoring systems
• Remote sensing in noisy environments
• General-purpose instrumentation

Analog To Digital Converters (ADC) Procurement Notes

This component is officially classified as Obsolete by Texas Instruments. Verify availability through secondary distributors or surplus markets. Ensure compatibility with existing designs as no direct active replacement is guaranteed within this specific series without design modification.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC08034 variant specifically for applications requiring four analog input channels. The 'CIWM' suffix indicates a commercial temperature range (-40°C to +85°C) and a 14-pin SOIC package. Consider the ADC08134 if improved accuracy (±½ LSB) is required, as it belongs to the upgraded ADC0813x family.

Analog To Digital Converters (ADC) Part Context

The ADC08034 is part of the broader ADC08031/ADC032/ADC034/ADC038 family, which shares identical core architecture but varies in channel count and package options. This specific model bridges the gap between the 2-channel ADC08032 and the 8-channel ADC08038, offering a mid-range solution for multi-channel data acquisition tasks.

Analog To Digital Converters (ADC) Replacement Considerations

The datasheet explicitly recommends the ADC08134 for applications requiring better voltage reference performance over temperature. While not a pin-for-pin functional equivalent in terms of accuracy specs, it serves as the primary successor in the product line.