ADC12032CIWM/NOPB

Analog To Digital Converters (ADC) Overview

The ADC12032CIWM/NOPB is a self-calibrating 12-bit plus sign successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a two-channel multiplexer supporting differential, pseudo-differential, or single-ended inputs. The device operates on a single +5V supply with a maximum power consumption of 33 mW and includes an internal sample/hold function. It utilizes a MICROWIRE-compatible serial interface for data exchange. Key electrical specifications include a maximum integral linearity error of ±1 LSB after auto-calibration, a conversion time of 8.8 µs max at 5 MHz clock, and an operating temperature range from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Self-Calibrating Architecture: Automatically adjusts linearity, zero, and full-scale errors to less than ±1 LSB without external adjustment components.
• Configurable Multiplexer: Supports 2 channels with selectable differential, pseudo-differential, or single-ended input configurations.
• Serial I/O Interface: Compatible with NSC MICROWIRE protocol, allowing variable digital output word length and format via software programming.
• Low Power Consumption: Maximum power dissipation of 33 mW in active mode, reducing to 100 µW typical in power-down mode.

Analog To Digital Converters (ADC) Applications

• Medical Instruments
• Process Control Systems
• Test Equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify component availability status as the ADC12032 family may be obsolete or subject to lifetime buy restrictions. Confirm package integrity for the SOIC-16 wide body variant. Ensure proper bypassing of VA+ and VD+ pins to the same supply voltage to maintain specified accuracy limits.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC12032CIWM/NOPB when a 2-channel multiplexed input is required alongside 12-bit resolution. Choose this part over the ADC12H032 if a maximum conversion clock frequency of 5 MHz is sufficient, as the H-family supports up to 8 MHz. Ensure the application can accommodate the external reference voltage requirements, as the device does not contain an internal reference.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADC12(H)030/2/4/8 family of self-calibrating SAR ADCs. The 'C' suffix indicates commercial temperature range (-40°C to +85°C), while 'IWM' denotes the 16-pin wide body SOIC package. The '/NOPB' suffix signifies lead-free and RoHS compliance. It serves as the 2-channel variant within the series, distinct from the 4-channel (ADC12034) and 8-channel (ADC12038) counterparts.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacement options within the same family include the ADC12030CIWM/NOPB (if only one channel is needed) or the higher-speed ADC12H032CIWM/NOPB. Verify pinout compatibility for the SOIC-16 package before substitution.