ADS7038HIRTER

Analog To Digital Converters (ADC) Overview

The ADS7038HIRTER is an 8-channel, 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates with a maximum sampling rate of 1.5 Msps and accepts single-ended inputs via an internal multiplexer. The device utilizes a supply-referenced architecture, requiring an analog supply voltage between 2.35 V and 5.5 V, and a digital supply between 1.65 V and 5.5 V. Communication is handled through a standard SPI interface. Key performance metrics include a signal-to-noise ratio (SNR) of 73.1 dB, a spurious-free dynamic range (SFDR) of 91 dB, differential nonlinearity (DNL) of 0.3 LSB, integral nonlinearity (INL) of 0.5 LSB, and a gain error of 0.05% FSR. It is housed in a 16-pin WQFN package and supports operation from -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• 8-channel SAR ADC with 1.5 Msps sampling rate and 12-bit resolution
• Single-ended input configuration with internal MUX-ADC structure
• SPI digital interface for data output and control
• High linearity: DNL 0.3 LSB, INL 0.5 LSB, Gain Error 0.05% FSR

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel monitoring
• Data acquisition modules for sensor networks
• Portable instrumentation with single-supply requirements

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'H' against the official datasheet to confirm temperature grade and material compliance. Confirm that the WQFN-16 package matches the target PCB footprint. Ensure power supply rails align with the specified 2.35–5.5 V analog and 1.65–5.5 V digital ranges before integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high-speed multi-channel acquisition is needed without external multiplexers. The 1.5 Msps rate suits applications where channel count exceeds typical single-channel high-speed ADCs. Verify that the single-ended input type matches the source signals, as differential inputs are not supported natively.

Analog To Digital Converters (ADC) Part Context

The ADS7038HIRTER belongs to the ADS7038H family, which provides 8-channel conversion capabilities. It shares architectural similarities with the ADS7038IRTER but may differ in environmental specifications or manufacturing lot details defined by the 'H' suffix. It serves as a cost-effective solution for medium-resolution, high-channel-count data acquisition tasks.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7038IRTET is a listed alternative within the same product family. Verify pin compatibility and electrical parameter equivalence before substitution.