ADS8517IPW

Analog To Digital Converters (ADC) Overview

The ADS8517IPW is a 16-bit, 200-kSPS low-power sampling analog-to-digital converter (ADC) from Texas Instruments. It features a successive approximation register (SAR) architecture with an internal 2.5-V reference and high-impedance analog inputs capable of handling ±25 V overvoltage. The device supports ±10 V, 4 V, and 5 V input ranges. It offers flexible data interfaces, including a full parallel bus and an SPI-compatible serial output with daisy-chain capability. Powered by a single 4.5-V to 5.5-V analog supply and a 1.65-V to 5.5-V digital interface supply, it dissipates 60 mW maximum at 200 kSPS. The component is housed in a TSSOP-28 package and operates within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 200-kSPS throughput rate
• Integrated 2.5-V internal reference with external reference option
• SPI-compatible serial output with daisy-chain (TAG) feature
• High-impedance analog inputs supporting ±10 V, 4 V, and 5 V ranges

Analog To Digital Converters (ADC) Applications

• Portable test equipment
• USB data acquisition modules
• Medical equipment
• Industrial process control
• Digital signal processing

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-28 tube packaging configuration as listed in the manufacturer's ordering information. Confirm that the 'I' grade designation meets the required integral nonlinearity specifications for the target application, noting that higher-grade variants exist with tighter performance tolerances.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-supply 16-bit ADC with integrated reference is required for systems needing both parallel and serial interface flexibility. Ensure the system design accommodates the separate analog (4.5–5.5 V) and digital (1.65–5.5 V) supply rails. Consider the power-down mode for applications requiring minimal standby consumption, and verify that the 200-kSPS sampling rate aligns with the Nyquist requirements of the input signals.

Analog To Digital Converters (ADC) Part Context

The ADS8517 is part of the ADS8517 family of low-power SAR ADCs. It is pin-compatible with the 16-bit ADS8507 and ADS8506, as well as the 12-bit ADS7806 and ADS7807, facilitating direct upgrades or replacements in existing designs. The device integrates the sample-and-hold, clock generation, and reference buffer, reducing external component count compared to discrete solutions.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8517IBDW is a pin-compatible alternative in an SO-28 package. For applications requiring higher accuracy, the ADS8517IB variant offers improved linearity specifications (±1.5 LSB INL vs ±3 LSB). Designers should verify thermal dissipation differences between the TSSOP-28 and SO-28 packages if substituting.