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ADS1271 Datasheet PDF

Part Series:
ADS1271 Series
Category:
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Description:
the ads1271 is a 24Bit delta-sigma analog-to-digital converter (ADC) with a data rate up to 105KSPS. it offers a uni...
Updated Time: 2023/01/13 02:26:42 (UTC + 8)

ADS1271 Datasheet PDF -

38 Pages
TI
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the ads1271 is a 24Bit delta-sigma analog-to-digital converter (ADC) with a data rate up to 105KSPS. it offers a uni...

ADS1271 - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Case/Package
TSSOP-16
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ADS1271 - TI Function Overview

The ADS1271 is a 24-bit, delta-sigma analog-to-digital converter (ADC) with a data rate up to 105kSPS. It offers a unique combination of excellent DC accuracy and outstanding AC performance. The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. The ADS1271 provides a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.
Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for DC measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specification are significantly weaker than their industrial counterparts. The ADS1271 combines these converters, allowing high-precision industrial measurement with excellent DC and AC specifications ensured over an extended industrial temperature range.
Three operating modes allow for optimization of speed, resolution, and power. A selectable SPI or a frame-sync serial interface provides for convenient interfacing to microcontrollers or DSPs. The output from the modulator is accessible for external digital filter applications. All operations, including internal offset calibration, are controlled directly by pins; there are no registers to program.
105kSPS Data Rate
AC Performance:
51kHz Bandwidth
109dB SNR (High-Resolution Mode)
–108dB THD
DC Accuracy:
1.8µV/°C Offset Drift
2ppm/°C Gain Drift
Selectable Operating Modes:
High-Speed: 105kSPS Data Rate
High-Resolution: 109dB SNR
Low-Power: 35mW Dissipation
Power-Down Control
Digital Filter:
Linear Phase Response
Passband Ripple: ±0.005dB
Stop Band Attenuation: 100dB
Internal Offset Calibration On Command
Selectable SPI&™ or Frame Sync Serial Interface
Designed for Multichannel Systems:
Daisy-Chainable Serial Interface
Easy Synchronization
Simple Pin-Driven Control
Modulator Output Option
Specified from –40°C to +105°C
Analog Supply: 5V
Digital Supply: 1.8V to 3.3V
APPLICATIONS
Vibration/Modal Analysis
Acoustics
Dynamic Strain Gauges
Pressure Sensors
Test and Measurement
SPI is a trademark of Motorola Inc. All other trademarks are the property of their respective owners.
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