ADS1271IPWRG4

Analog To Digital Converters (ADC) Overview

The ADS1271IPWRG4 is a single-channel, 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates with a sampling rate of 105 kSPS and supports a signal bandwidth up to 51 kHz. The device features a differential input type and communicates via an SPI interface. It requires an external reference voltage. Power consumption is specified at 92 mW typical, with a maximum power dissipation of 136 mW. The analog supply voltage ranges from 4.75 V to 5.25 V, while the digital supply operates between 1.65 V and 3.6 V. Key performance metrics include a signal-to-noise ratio (SNR) of 109 dB, differential nonlinearity (DNL) of +/- 1 LSB, and integral nonlinearity (INL) of +/- 0.0015% FSR. It functions within a temperature range of -40°C to +105°C and is housed in a 16-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• High-precision 24-bit resolution combined with high-speed 105 kSPS conversion capability for wide bandwidth applications.
• Integrated digital filtering providing passband ripple of +/- 0.005 dB and stopband attenuation of 100 dB.
• Low offset drift of 1.8 µV/°C ensuring stable DC accuracy across industrial temperature ranges.
• Daisy-chainable architecture allowing multiple devices to be connected sequentially for multi-channel systems.

Analog To Digital Converters (ADC) Applications

• Test and measurement equipment requiring high-precision data acquisition.
• Vibration analysis systems for monitoring mechanical health.
• Machine tool monitoring for precision manufacturing control.
• Medical instruments demanding high-resolution signal processing.
• Industrial process control involving critical-bearing wear detection.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix IPWG4 against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the external reference voltage source meets the required noise specifications to maintain the ADC's 109 dB SNR performance. Confirm that the host microcontroller SPI interface timing aligns with the ADS1271's clock requirements for reliable data transfer.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel solution is needed with both high DC accuracy and wide AC bandwidth. Compare against the ADS1274 or ADS1278 if multiple channels are required, as these variants share similar core architectures. Ensure the system design accommodates the separate analog and digital power supplies and provides sufficient decoupling to support the 105 kSPS operation without introducing noise artifacts.

Analog To Digital Converters (ADC) Part Context

The ADS1271 belongs to the ADS1271 family of high-performance delta-sigma ADCs from Texas Instruments. It serves as the foundational single-channel model for the series, which includes multi-channel variants like the ADS1274 (four-channel) and ADS1278 (eight-channel). This part represents a balance of speed and precision, targeting applications where both dynamic range and conversion rate are critical constraints.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same family include the ADS1274 and ADS1278 for multi-channel needs. For single-channel replacements, verify pin-to-pin compatibility with other TI 24-bit delta-sigma ADCs such as the ADS1270 or ADS1272, ensuring interface and power supply requirements match the existing design constraints.

Analog To Digital Converters (ADC) FAQ

What is the maximum signal bandwidth supported by the ADS1271?

The ADS1271 supports a signal bandwidth of up to 51 kHz when operating at its maximum sampling rate of 105 kSPS.

Does the ADS1271 require an internal or external voltage reference?

The ADS1271 requires an external voltage reference; it does not contain an internal reference generator.

How is the data output accessed from the ADS1271?

Data is accessed via a standard SPI interface, typically synchronized using the DRDY (Data Ready) pin to indicate when new conversion results are available.