ADC0838BCV

Analog To Digital Converters (ADC) Overview

The ADC0838BCV is an 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a software-configurable multiplexer supporting up to 8 input channels, which can be configured for single-ended, differential, or pseudo-differential operation. The device operates on a single 5 VDC supply with a power consumption of 15 mW and delivers a conversion time of 32 μs. It utilizes a TI MICROWIRE-compatible serial interface for data exchange. The BCV variant provides a total unadjusted error of ±½ LSB and supports an operating temperature range from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 8-Bit Resolution with Successive Approximation Architecture
• Software-Configurable Multiplexer for Single-Ended, Differential, and Pseudo-Differential Inputs
• TI MICROWIRE Compatible Serial I/O Interface
• Low Power Consumption: 15 mW at 5 VDC Supply

Analog To Digital Converters (ADC) Applications

• Data acquisition systems requiring remote sensor interfacing
• Industrial process control with ground-referenced or differential signals
• Battery-powered instrumentation utilizing ratiometric operation
• Microprocessor peripheral interfaces using standard shift registers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BCV' corresponds to the PLCC package and industrial temperature grade (-40°C to +85°C). Confirm that the design requires the 8-channel multiplexer capability, as other variants in the series offer fewer channels. Ensure the system clock frequency remains within the specified 10 kHz to 400 kHz range for accurate timing.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-channel multiplexed input is required alongside serial communication. The pseudo-differential mode allows offsetting analog zero voltage values, simplifying signal conditioning for single-supply applications. Verify that the source resistance does not exceed 1 kΩ to prevent errors from input leakage currents, or utilize buffering if higher impedance sources are present.

Analog To Digital Converters (ADC) Part Context

The ADC0838BCV belongs to the ADC0831-N/ADC0832-N/ADC0834-N/ADC0838-N family. While sharing the same core ADC architecture and serial interface, it is distinguished by its 20-pin PLCC package and 8-channel multiplexer configuration. Other family members include the ADC0831-N (1 channel), ADC0832-N (2 channels), and ADC0834-N (4 channels).

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same package and pinout include the ADC0838CCV (commercial temperature range) and ADC0838CIWM (industrial temperature range, SOIC/Wide package). Cross-family upgrades such as the TLV0838 series offer lower voltage operation but require interface adjustments.