ADS7891IPFBT

Analog To Digital Converters (ADC) Overview

The ADS7891IPFBT is a 14-bit, 3-MSPS successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a single pseudo-differential input and operates with an analog supply of 5V and a digital supply ranging from 2.7V to 5.25V. The device utilizes a 48-TQFP package measuring 7x7 mm. Key performance metrics include a signal-to-noise ratio of 78 dB and total harmonic distortion of 88.5 dB at the maximum sampling rate. Power consumption is 85 mW during normal operation, reducing to 10 mW in Nap mode and 10 μW in shutdown mode. It integrates an internal reference voltage and buffer.

Analog To Digital Converters (ADC) Feature Summary

• Zero-latency conversion architecture enables real-time data processing without pipeline delay.
• Integrated internal 2.5V reference voltage and buffer simplify system design by reducing external component count.
• Flexible parallel interface supports both 8-bit and 14-bit data bus configurations for processor compatibility.

Analog To Digital Converters (ADC) Applications

• High-speed industrial process control systems
• Portable medical instrumentation requiring low power consumption
• Battery-powered data acquisition equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications. Confirm RoHS3 compliance status as required by project regulations. Check for end-of-life notifications or product change notices that may affect long-term availability. Ensure the selected variant matches the required operating temperature range of -40°C to 85°C.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, high-resolution ADC with moderate speed is required. The integrated reference eliminates the need for external precision voltage sources. Consider the 48-pin TQFP footprint for PCB layout constraints. Evaluate power requirements against the 85 mW active consumption if battery life is critical.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7891 family of SAR ADCs from Texas Instruments. It is distinct from multiplexed variants like the AD7891, offering higher resolution and speed for single-channel applications. The IPFBT suffix indicates the specific 48-TQFP surface-mount package configuration.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical compatibility before considering any alternative devices from other manufacturers.