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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 32VQFNP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：24
- Sampling Rate (Per Second)：7.2k
- Number of Inputs：3, 5
- Input Type：Differential, Single Ended
- Data Interface：SPI
- Configuration：MUX-PGA-ADC
- Ratio - S/H:ADC：0:01
- Number of A/D Converters：1
- Architecture：Sigma-Delta
- Reference Type：External, Internal
- Voltage - Supply, Analog：4.75V ~ 5.25V
- Voltage - Supply, Digital：2.7V ~ 5.25V
- Features：Internal Oscillator, PGA, Temperature Sensor
- Operating Temperature：-40°C ~ 125°C
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-VQFN (5x5)
- Mounting Type：Surface Mount, Wettable Flank
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The ADS1235QWRHMRQ1 is an automotive-grade, 24-bit sigma-delta analog-to-digital converter (ADC) manufactured by Texas Instruments. It features three differential input channels and supports single-ended inputs. The device operates with a digital supply voltage ranging from 2.7 V to 5.25 V and an analog supply of 5 V. It delivers a sampling rate of 7.2 kSPS via an SPI interface. Packaged in a VQFN-32 format, it functions within a temperature range of -40°C to +125°C. Key electrical specifications include a gain error of 0.05% and power dissipation of 35 mW.
Feature Summary
- Integrated 24-bit sigma-delta architecture for high-resolution signal conversion
- Three differential input channels supporting bridge sensor measurements
- Automotive qualification compliant with AEC-Q100 standards
Applications
- Automotive wheel speed sensing systems
- Precision bridge sensor interfaces
- Industrial measurement equipment requiring high resolution
Procurement Notes
Verify the specific suffix QWRHMRQ1 against the official Texas Instruments datasheet to confirm automotive grade classification and package type. Ensure compatibility with required operating temperatures and supply voltages before integration. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability.
Selection Notes
Select this component when high-resolution, low-speed data acquisition is required for automotive applications. The 24-bit resolution suits precision sensors like strain gauges or load cells. Consider the VQFN-32 package size for space-constrained designs. Verify that the 7.2 kSPS rate meets system bandwidth requirements.
Part Context
This part belongs to the ADS1235 series of delta-sigma ADCs designed for precision measurements. The 'Q' prefix indicates automotive qualification, while 'WRHMRQ1' specifies the tape-and-reel packaging and temperature grade. It complements other TI automotive ADCs like the ADS8353 for different speed and resolution needs.
Replacement Considerations
Check for direct pin-compatible alternatives within the ADS1235 family. Verify if non-automotive grades meet environmental requirements. Confirm interface compatibility and power consumption similarities before substitution.
