ADS8506IDW

Analog To Digital Converters (ADC) Overview

The ADS8506IDW is a 12-bit, 40-kSPS successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single +5-V supply and features an internal 2.5-V reference. The device supports ±10-V, 4-V, and 5-V input ranges with overvoltage protection up to ±25 V. It offers both parallel and SPI-compatible serial interfaces. Key electrical specifications include a maximum integral nonlinearity (INL) of ±0.9 LSB and differential nonlinearity (DNL) of ±0.9 LSB for the 'I' grade. Power consumption is typically 24 mW at 40 kSPS, with a 50-μW power-down mode.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 40-kSPS throughput rate
• Internal 2.5-V reference or external reference capability
• Configurable input ranges: ±10 V, 0–5 V, and 0–4 V
• SPI-compatible serial output with daisy-chain support
• Full parallel interface with byte-select functionality

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Test and measurement equipment
• Medical equipment
• Data acquisition systems
• Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum. The 'DW' suffix indicates a 28-pin SOIC package in a tube. Confirm that the 'I' grade meets the required linearity specifications, as it differs from the 'B' grade. Ensure the design accounts for the specified operating temperature range of -40°C to 85°C.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8506IDW when a 12-bit resolution and 40-kSPS sampling rate are sufficient for the application. Choose this part if a single +5-V supply is available and pin compatibility with the ADS7806 family is required. Consider the 'I' grade if the ±0.9 LSB INL specification aligns with system accuracy requirements rather than the tighter ±0.45 LSB of the 'B' grade.

Analog To Digital Converters (ADC) Part Context

The ADS8506 is part of the ADS8505 series of low-power sampling ADCs. It is designed as a drop-in replacement for the ADS7806, maintaining pin compatibility while offering integrated reference and flexible interface options. The device utilizes a capacitor-based SAR architecture to achieve its performance metrics within a compact 28-pin SOIC package.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8506IBDW is a higher-precision alternative within the same package and interface configuration, featuring improved INL/DNL specifications of ±0.45 LSB compared to the ±0.9 LSB of the ADS8506IDW.