ADS8512IDW

Analog To Digital Converters (ADC) Overview

The ADS8512IDW is a 12-bit, 40-kSPS successive approximation register (SAR) analog-to-digital converter from Texas Instruments. It operates on a single +5-V supply with a maximum power dissipation of 32.5 mW and features a low-power mode consuming 50 μW. The device includes an internal 2.5-V reference and supports serial SPI-compatible interfaces. Key electrical specifications include ±0.5 LSB maximum INL for the IB variant, 73.9 dB SINAD at 10-kHz input, and support for multiple input ranges such as ±10 V, ±5 V, and 0 V to 10 V via external resistor networks.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit SAR ADC with 40-kSPS throughput rate
• Single +5-V analog supply with 32.5 mW max power dissipation
• Internal 2.5-V reference with external reference capability
• SPI-compatible serial interface with master/slave feature

Analog To Digital Converters (ADC) Applications

• Industrial process control
• Test equipment
• Robotics
• DSP servo control
• Medical instrumentation
• Portable data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix (DW vs DWR) to confirm tube versus tape-and-reel packaging. Confirm whether the IB or I grade is required based on INL specifications. Check current availability status as production data may vary. Ensure compatibility with existing SO-16 footprints in the design.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8512IBDW for stricter linearity requirements (±0.5 LSB INL) compared to the standard ADS8512IDW (±1 LSB INL). Consider the ADS8513 if 16-bit resolution is needed, noting it shares pin compatibility but has different performance characteristics. Verify input range configurations match the application's voltage requirements using the internal resistors or external networks.

Analog To Digital Converters (ADC) Part Context

The ADS8512 is part of the ADS85xx family of low-power sampling ADCs. It is pin-compatible with the ADS7812 and ADS7813, facilitating upgrades from older 12-bit devices. The IDW designation indicates the industrial temperature grade (-40°C to +85°C) and SO-16 package. It serves as a bridge between high-speed parallel ADCs and lower-resolution serial converters.

Analog To Digital Converters (ADC) Replacement Considerations

ADS8513IDW: Pin-compatible upgrade offering 16-bit resolution and SPI interface, but higher power consumption. ADS7812: Older generation 12-bit device with similar pinout but potentially different performance specs. ADS8512IBDW: Higher accuracy version of the same package with tighter INL/DNL specifications.