ADS8505IBDW

Analog To Digital Converters (ADC) Overview

The Texas Instruments ADS8505IBDW is a 16-bit, 250-kSPS successive approximation register (SAR) analog-to-digital converter. It operates from a single +5-V supply with typical power dissipation of 70 mW at maximum sampling rates. The device features a standard ±10-V input range and includes an internal 2.5-V reference. Key performance metrics include a maximum integral nonlinearity (INL) of ±1.5 LSB and differential nonlinearity (DNL) of ±1 LSB without missing codes. It utilizes a parallel data interface with three-state drivers and is housed in a 28-pin SOIC package.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 250-kSPS throughput rate
• Standard ±10-V single-ended input range
• Internal or external reference options
• Full parallel data output with three-state drivers

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Data acquisition systems
• Medical equipment
• Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the SOIC-28 package and tube transport media as listed in the manufacturer's documentation. Confirm that the 'I' suffix indicates the industrial temperature range specification (-40°C to 85°C). Ensure compatibility with existing board layouts for the 28-pin SOIC footprint before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit SAR ADC with a wide ±10-V input range is required without external attenuation circuitry. It is suitable for applications needing low power consumption under 100 mW while maintaining high linearity. Consider the parallel interface requirements and bus timing constraints when integrating with microprocessors or FPGAs.

Analog To Digital Converters (ADC) Part Context

The ADS8505 belongs to the ADS8505 series of CMOS sampling A/D converters. It is pin-compatible with the lower-speed ADS7805 and the 12-bit ADS8504/7804, facilitating design upgrades or downgrades within the same package form factor. The device integrates a sample-and-hold, capacitor-based SAR architecture, clock logic, and reference buffer into a single chip.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the ADS8505IDW (same package, different accuracy grade), ADS8505IBDB (SSOP-28 package), and ADS8505IBDWR (tape and reel packaging). Cross-manufacturer replacements are not explicitly verified in the provided source material.