ADS7844NB

Analog To Digital Converters (ADC) Overview

The ADS7844NB is a 12-bit, 8-channel successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a serial output interface and supports sampling rates up to 200 kS/s. The device accepts pseudo-differential or single-ended inputs with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply range of 1.9 V to 5.5 V. Key performance metrics include a signal-to-noise and distortion ratio (SINAD) of 72 dB, integral nonlinearity (INL) of ±1 LSB, and differential nonlinearity (DNL) of ±1 LSB. It operates within a temperature range of -40°C to +85°C and is housed in a 20-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Eight multiplexed input channels supporting both pseudo-differential and single-ended configurations for flexible signal acquisition.
• High-precision 12-bit resolution with low nonlinearity errors ensuring accurate data conversion without missing codes.
• Low power consumption architecture suitable for battery-operated applications with independent analog and digital supply domains.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation requiring high accuracy and low power consumption
• Industrial process control systems with multi-channel sensor inputs
• Data acquisition systems for scientific research equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix and package variant when sourcing components. Confirm that the received part matches the ADS7844NB designation and check for RoHS compliance status as indicated in the manufacturer's documentation. Ensure compatibility with existing board layouts for the SSOP-20 footprint.

Analog To Digital Converters (ADC) Selection Notes

Select this component for designs requiring an 8-channel ADC with 12-bit resolution and SPI-compatible serial output. Consider the 200 kS/s sampling rate and wide supply voltage ranges when interfacing with various microcontrollers and sensors. Verify thermal requirements against the specified operating temperature range.

Analog To Digital Converters (ADC) Part Context

The ADS7844NB belongs to the ADS7844 family of high-speed, low-power analog-to-digital converters from Texas Instruments. This series is designed for applications needing multiple input channels with precise conversion capabilities. The NB suffix typically denotes a specific packaging or tape-and-reel configuration within the broader product line.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7844N is documented as a compatible replacement or equivalent marking variant for the ADS7844NB. Verify pinout and electrical specifications match before substitution.

Analog To Digital Converters (ADC) FAQ

What is the maximum sampling rate of the ADS7844NB?

The maximum sampling rate is 200 kS/s.

Does the ADS7844NB support differential inputs?

Yes, it supports pseudo-differential and single-ended input types.

What is the typical power consumption of the ADS7844NB?

The typical power consumption is 1.8 mW.