ADS8638SRGET

Analog To Digital Converters (ADC) Overview

The ADS8638SRGET is a Texas Instruments 12-bit analog-to-digital converter (ADC) featuring an 8-channel bipolar input multiplexer. It utilizes a successive approximation register (SAR) architecture to achieve a sampling rate of 1 MSPS with no latency. The device supports software-selectable input ranges, including ±10V, ±5V, ±2.5V, 0V to 10V, and 0V to 5V. It operates on an analog supply voltage of 2.7 V to 5.25 V and a digital supply voltage of 1.65 V to 5.25 V. Key performance metrics include a signal-to-noise ratio (SNR) of 71.8 dB and a power consumption of 14.45 mW at full speed. The component is housed in a 24-pin VQFN package and functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 8-channel input multiplexer with software-selectable bipolar and unipolar voltage ranges
• Built-in internal voltage reference, temperature sensor, and programmable comparator for alarm thresholds
• Compatible SPI serial interface supporting digital supply voltages from 1.65 V to 5.25 V
• Flexible power-down modes enabling low-power operation across varying sampling rates

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel data acquisition
• Programmable logic controllers (PLCs) for high-speed signal monitoring
• Data acquisition systems demanding precise bipolar input measurement
• High-speed closed-loop control applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'SRGET' corresponds to the tape-and-reel packaging configuration as indicated by distributor listings. Confirm RoHS compliance status through the official datasheet or manufacturer documentation prior to integration. Ensure the ordering part number matches the required quantity per reel specifications defined in the product specification sheet.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8638SRGET when eight independent bipolar input channels are required within a single ADC unit. This model is appropriate for designs needing software-configurable input ranges up to ±10V without external scaling components. Consider this part over the ADS8634 if channel count is the primary constraint, as both share identical electrical characteristics and pinouts except for the multiplexer size.

Analog To Digital Converters (ADC) Part Context

The ADS8638 belongs to the ADS8634/8 series of 12-bit SAR ADCs manufactured by Texas Instruments. It shares the same core architecture, pinout, and feature set as the ADS8634, differing only in the number of available input channels. The SRGET suffix denotes the specific reel-based packaging variant intended for automated surface-mount assembly processes.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8634 serves as a direct functional substitute for designs requiring fewer than five input channels, maintaining identical electrical specifications and pin compatibility.