ADS7887MDBVT

Analog To Digital Converters (ADC) Overview

The ADS7887MDBVT is a 10-bit, 1.25-MSPS micro-power SAR analog-to-digital converter from Texas Instruments. It operates on a single supply voltage ranging from 2.35 V to 5.25 V and features a serial interface compatible with standard SPI protocols. The device provides zero latency conversion with a typical power dissipation of 3.8 mW at 3 V and 8 mW at 5 V. Key performance metrics include a signal-to-noise and distortion ratio (SINAD) of 61 dB, total harmonic distortion (THD) of -84 dB, and integral/differential nonlinearity of ±0.35 LSB. It is housed in a compact 6-pin SOT-23 package.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit resolution with a maximum sampling rate of 1.25 MSPS
• Wide supply range of 2.35 V to 5.25 V with low power consumption
• Glueless serial interface supporting up to 25 MHz clock speeds
• Digital inputs tolerant to 5.25 V regardless of the device supply voltage

Analog To Digital Converters (ADC) Applications

• Baseband converters in radio communication systems
• Motor current and bus voltage sensors in digital drives
• Optical networking equipment including DWDM and MEMS-based switching
• Battery-powered systems requiring low power operation
• Medical instrumentation and high-speed data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the marketing status before design implementation. The ADS7887MDBVT is classified as NRND (Not Recommended for New Designs). While production continues to support existing customers, Texas Instruments does not recommend adopting this part number for new designs. Confirm availability and lifecycle status through authorized distributors prior to procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7887MDBVT when a 10-bit resolution and 1.25 MSPS throughput are required within a 6-pin SOT-23 footprint. Ensure the application supports a unipolar input range of 0 V to VDD. Verify that the system can provide a low-impedance drive for the VIN pin if source impedance exceeds 200 Ω. Consider the extended temperature range of –55°C to 125°C for harsh environment suitability.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS7887M family of micro-power miniature SAR ADCs. It shares architectural similarities with the ADS7888 but offers higher 10-bit resolution compared to the 8-bit variant. The device utilizes an internal capacitor-based SAR architecture with inherent sample-and-hold functionality, eliminating the need for external holding circuits.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7887MDBVT is marked as NRND. Designers should consult the official datasheet or TI website for currently recommended alternatives within the ADS788x family or other high-speed ADC series that meet the specific resolution and speed requirements.