ADS7817PB

Analog To Digital Converters (ADC) Overview

The ADS7817PB is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a fully differential analog input and operates with a single 5V supply, consuming only 2.3 mW of power. The device supports sampling rates up to 200 kS/s and utilizes a 3-wire serial interface compatible with SPI. It is housed in a 16-pin DIP package and functions within an industrial temperature range of -40°C to +85°C. Key performance metrics include a signal-to-noise and distortion ratio (SINAD) of 71 dB, with differential nonlinearity (DNL) of ±1 LSB and integral nonlinearity (INL) of ±2 LSB.

Analog To Digital Converters (ADC) Feature Summary

• Fully differential analog input architecture for improved noise rejection
• Micro-power operation with automatic power-down capabilities
• External reference voltage flexibility ranging from 100mV to 2.5V

Analog To Digital Converters (ADC) Applications

• Battery-operated systems requiring low power consumption
• Remote data acquisition networks
• Isolated data acquisition environments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'PB' against official Texas Instruments documentation to confirm pinout and electrical specifications, as suffixes often denote package type or temperature grade. Confirm RoHS compliance status and lifecycle stage, as this component may be subject to obsolescence notices. Ensure the external reference voltage requirements match the system design constraints before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7817PB when a 12-bit resolution and 200 kS/s sampling rate are required in a DIP package. This component is suitable for designs needing differential inputs and low power dissipation under 5V operation. Compare DNL and INL specifications against application accuracy needs. Consider alternative packages like SOIC-8 or MSOP-8 if board space is limited, using variants such as ADS7817UB.

Analog To Digital Converters (ADC) Part Context

The ADS7817PB belongs to the ADS7817 family of micro-power sampling ADCs originally developed by Burr-Brown and acquired by Texas Instruments. This series is designed for direct connection to transducers in battery-powered applications. The PB suffix typically indicates a plastic dual in-line package, distinguishing it from surface-mount variants like the U (SOIC) or B (Burr-Brown original designation) suffixes found in the same product line.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements include other ADS7817 variants with different packages, such as ADS7817UB (SOIC-8) or ADS7817E/250 (VSSOP-8). Verify that the substitute part maintains the 12-bit resolution, 200 kS/s speed, and differential input configuration. Check for any differences in operating temperature ranges or pin compatibility.