ADC122S101CIMM

Analog To Digital Converters (ADC) Overview

The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter featuring a high-speed serial interface. Based on a successive-approximation register architecture with an internal track-and-hold circuit, it accepts one or two input signals at IN1 and IN2. The device is fully specified over a sample rate range of 500 ksps to 1 Msps. It operates with a single supply voltage ranging from +2.7V to +5.25V. Normal power consumption is 4.3 mW at a +3V supply and 13.1 mW at a +5V supply. The output serial data is straight binary and compatible with SPI, QSPI, MICROWIRE, and common DSP interfaces.

Analog To Digital Converters (ADC) Feature Summary

• Two input channels (IN1, IN2) with configurable multiplexer selection via the control register.
• Fully specified performance across a variable sample rate range of 500 ksps to 1 Msps.
• Single power supply operation from +2.7V to +5.25V with shutdown mode reducing current to 38 nA at +3.6V.
• High dynamic performance with typical SNR of 72.4 dB and ENOB of 11.7 bits.

Analog To Digital Converters (ADC) Applications

• Portable systems requiring low power consumption.
• Remote data acquisition networks.
• Instrumentation and control systems.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix for package type and temperature grade against the manufacturer's official documentation. Confirm that the component meets RoHS compliance requirements for the intended market. Ensure that ESD handling precautions are followed during storage and assembly, as the leads require shorting or conductive foam protection.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution is required with throughput speeds between 500 ksps and 1 Msps. It is suitable for designs needing dual single-ended inputs and a simple serial interface. Consider the thermal resistance of 250°C/W for the 8-lead VSSOP package when calculating junction temperature limits under maximum power dissipation conditions.

Analog To Digital Converters (ADC) Part Context

The ADC122S101 belongs to the Texas Instruments ADC122 family of 12-bit converters. Pin-compatible alternatives include the ADC122S021 (50–200 ksps), ADC122S051 (200–500 ksps), and higher-resolution variants like the ADC124S101. These devices share identical pinouts and functional compatibility, allowing for design flexibility based on speed requirements.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible substitutes within the same family include the ADC122S021, ADC122S051, and ADC122S101 itself. All listed alternatives maintain full pin and function compatibility, enabling direct replacement if speed or resolution specifications align with the system requirements.