ADC122S655CIMMX/NOPB

Analog To Digital Converters (ADC) Overview

The ADC122S655CIMMX/NOPB is a dual-channel, 12-bit simultaneous sampling analog-to-digital converter (ADC) manufactured by Texas Instruments. It employs a successive approximation register (SAR) architecture to maintain differential input integrity and provide superior common-mode signal suppression. The device supports conversion rates ranging from 200 kSPS to 500 kSPS with an external reference voltage between 1.0 V and VA. It operates on a single 4.5 V to 5.5 V analog supply and features SPI, QSPI, Microwire, and DSP-compatible serial interfaces. Key performance metrics include a maximum integral nonlinearity (INL) of ±1 LSB, a maximum differential nonlinearity (DNL) of ±0.95 LSB, and a minimum signal-to-noise ratio (SNR) of 71 dBc. Power consumption is typically 11 mW at 500 kSPS and drops to 3 μW in shutdown mode.

Analog To Digital Converters (ADC) Feature Summary

• True simultaneous sampling across two channels preserves relative phase information for accurate signal processing.
• Differential inputs are maintained through internal tracking and holding circuits to ensure high common-mode rejection.
• Flexible serial data output is compatible with standard SPI, QSPI, Microwire, and various DSP interfaces.

Analog To Digital Converters (ADC) Applications

• Motor control applications requiring direct connection to motor sensors.
• Industrial systems needing precise phase information retention between channels.
• Data acquisition systems utilizing differential signaling for noise immunity.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CIMMX' against the manufacturer's official datasheet to confirm package type and temperature range specifications. Ensure that the external reference voltage requirements align with system design constraints before procurement. Confirm availability status directly with authorized distributors as stock levels fluctuate.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous sampling of two differential signals is required within a 12-bit resolution constraint. It is suitable for designs operating within the 4.5 V to 5.5 V supply range and needing low power consumption during idle states. Consider the 10-lead VSSOP package dimensions for PCB layout compatibility.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC122S655 series of dual-channel SAR ADCs from Texas Instruments. It is designed for applications where channel synchronization is critical. The device integrates high-speed conversion capabilities with low-power operation, making it distinct from single-channel or asynchronous multi-channel alternatives in the same product family.

Analog To Digital Converters (ADC) Replacement Considerations

Check for pin-compatible alternatives within the ADC122S6xx series if different sampling rates or package options are needed. Verify electrical parameter equivalence, particularly SNR and INL/DNL specifications, when substituting with other dual-channel 12-bit ADCs.