ADS7844N/1KG4

Analog To Digital Converters (ADC) Overview

The ADS7844N/1KG4 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. Housed in a 20-pin SSOP package, it operates within a temperature range of -40°C to +85°C. Key performance metrics include a differential nonlinearity of ±0.8 LSB, integral nonlinearity of ±2 LSB, and a signal-to-noise and distortion ratio of 72 dB.

Analog To Digital Converters (ADC) Feature Summary

• Eight-channel multiplexed input architecture supporting both pseudo-differential and single-ended configurations for versatile signal acquisition.
• Low power consumption design with typical dissipation of 1.8 mW, suitable for battery-operated portable systems.
• High-speed data conversion capability with a throughput rate of 200 kS/s and external reference mode support.

Analog To Digital Converters (ADC) Applications

• Portable multichannel data loggers
• Battery-powered measurement equipment
• Personal digital assistants

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the '/1K' designation corresponds to the reel packaging quantity of 1000 units. Ensure the SSOP-20 package matches the target PCB footprint requirements before integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight channels of 12-bit resolution are required at moderate speeds. The SAR architecture provides fast settling times suitable for general-purpose data acquisition. Verify that the system can accommodate the external reference requirement and the specified voltage ranges for both analog and digital domains.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS784x family of high-speed, low-power ADCs from Texas Instruments. It shares pin compatibility and similar power characteristics with other members like the ADS7841 and ADS8344 series. The device is designed for applications requiring efficient power usage alongside multi-channel signal processing capabilities.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7844EG4 is a verified alternative offering identical electrical specifications but housed in a QSOP-20 package instead of SSOP-20. Designers must verify mechanical fit and thermal performance differences between the two package types before substitution.