ADC122S101CIMM/NOPB

Analog To Digital Converters (ADC) Overview

The ADC122S101CIMM/NOPB is a dual-channel, 12-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture with an integrated track-and-hold circuit. The device supports a sampling rate range from 500 ksps to 1 Msps, providing complete performance specifications across this entire bandwidth. It operates on a single power supply ranging from 2.7 V to 5.25 V for both analog and digital domains. The component features a high-speed serial interface compatible with standard DSP protocols and is housed in a 10-lead Very Small Outline Package (VSSOP).

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel input capability with integrated multiplexer and track-and-hold.
• Variable power management with normal and shutdown modes for low-power applications.
• High-speed serial output compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
• Complete performance data specified across the full 500 ksps to 1 Msps sampling rate range.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring low power consumption.
• Battery-powered data acquisition devices.
• Industrial process control loops.
• Medical equipment with strict power constraints.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADC122S101 family of CMOS 12-bit A/D converters. It is functionally equivalent to the National Semiconductor LM94022 series but is now produced under Texas Instruments following their acquisition. The NOPB suffix indicates compliance with RoHS standards and absence of lead/bismuth materials.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacement options include the ADC122S101CIMMX/NOPB variant. Designers should verify pin compatibility and ensure that the target system's software handles the specific serial clock timing requirements defined in the datasheet.

Analog To Digital Converters (ADC) FAQ

What is the power consumption in shutdown mode?

In shutdown mode at 3.6 V supply, typical power consumption is 0.14 μW. At 5.25 V, it is typically 0.32 μW.

How does the sampling rate affect performance?

Unlike many converters that specify performance only at a single rate, the ADC122S101 provides complete static and dynamic performance specifications across its entire operating range of 500 ksps to 1 Msps.

What is the maximum integral nonlinearity (INL)?

The maximum INL is ±1.6 LSB, with a typical value of ±0.64 LSB.