ADS7844EB/2K5

Analog To Digital Converters (ADC) Overview

The ADS7844EB/2K5 is a 12-bit, 8-channel serial output sampling analog-to-digital converter manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture to achieve a maximum sampling rate of 200 kS/s. The device supports pseudo-differential and single-ended input types with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage 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. Typical power consumption is 1.8 mW at full throughput. It is housed in a 20-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Eight multiplexed analog 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 operation suitable for battery-powered systems with typical dissipation of 1.8 mW at 200 kHz throughput.
• Synchronous serial interface compatible with standard microcontroller and DSP protocols for simplified system integration.

Analog To Digital Converters (ADC) Applications

• Portable multichannel data loggers requiring high channel count and low power consumption.
• Personal digital assistants and handheld devices needing efficient analog signal digitization.
• Industrial measurement equipment requiring precise multi-point sensor monitoring.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix /2K5 indicates tape-and-reel packaging containing 2000 units per reel. Confirm RoHS compliance status as the base ADS7844EB is lead-free. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target design, as variations exist within the family.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight simultaneous or multiplexed analog inputs are required with 12-bit accuracy. It is appropriate for designs where power efficiency is critical but moderate speed up to 200 kSPS is sufficient. Consider the external reference requirement and the need for a serial interface compatible with the host processor.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS784x family of high-speed, low-power ADCs from Texas Instruments. It shares architectural similarities with the ADS7841 (4-channel) and ADS834x series, offering pin compatibility within certain channel counts. The EB variant denotes a specific package and temperature grade configuration within the broader product line.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7844N: Pin-compatible alternative with potentially different packaging or historical manufacturing origin. ADS7844EB: Same functional device but potentially different reel quantity or minor revision differences. Verify electrical parameters and package dimensions before substitution.