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ADS1235-Q1

Texas Instruments
Part Number ADS1235-Q1
Manufacturer Texas Instruments
Description 24-Bit Delta-Sigma ADC
Published Jan 2, 2020
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community ADS1235-Q1 SBAS970 – OCTOBER 2019...
Datasheet PDF File ADS1235-Q1 PDF File

ADS1235-Q1
ADS1235-Q1

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community ADS1235-Q1 SBAS970 – OCTOBER 2019 ADS1235-Q1 Automotive Precision, 3-Channel, Differential-Input, 7200-SPS, 24-Bit Delta-Sigma ADC for Bridge Sensors 1 Features •1 AEC-Q100 qualified for automotive applications – Temperature grade 1: –40°C to +125°C, TA • 24-bit, high-precision ADC: – 120,000 noise-free counts (10-mV input, 10 SPS) – Offset drift: 1 nV/°C – Gain drift: 0.
5 ppm/°C • Three differential or five single-ended inputs • Two reference inputs • Wide input voltage range: ±7 mV to ±5 V • Low-noise PGA, gain: 1, 64, and 128 • Data rate: 2.
5 SPS to 7200 SPS • AC- or DC-bridge excitation option • Chop mode for zero-drift operation • Simultaneous 50-Hz and 60-Hz rejection mode • Single-cycle settling mode • Missing reference input monitor • Signal overrange monitor • Temperature sensor • Cyclic redundancy check (CRC) • 5-V or ±2.
5-V power supply 2 Applications • On-board weighing systems (OBW) • Weigh scales and strain-gauge digitizers • Dynamic weigh systems • Pressure measurement 3 Description The ADS1235-Q1 is a precision, 7200-SPS, deltasigma (ΔΣ) analog-to-digital converter (ADC) with an integrated programmable gain amplifier (PGA).
This device also includes diagnostic features such as PGA overrange and reference monitors.
The ADC provides high-accuracy, zero-drift conversion data for highprecision equipment, including weigh scales, strain gauges, and resistive pressure sensors.
The ADC has signal and reference multiplexers that support three differential signal inputs and two reference inputs.
The ADC also includes a low-noise PGA that provides gains of 1, 64, and 128.
The ADC also has a 24-bit ΔΣ modulator and programmable digital filter.
The high-impedance inputs (1 GΩ) of the PGA reduce measurement error that is caused by sensor loading.
The ADC supports ac-bridge excitation to remove the drift errors from the sensor wiring.
The ADC provides the clock control signals ...


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