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Product Detailed Parameters
- Description：IC ADC 31BIT SIGMA-DELTA 28TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Number of Bits：31
- Sampling Rate (Per Second)：4k
- Number of Inputs：2
- Input Type：Differential
- Data Interface：SPI
- Configuration：ADC
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：Sigma-Delta
- Reference Type：External
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：1.65V ~ 3.6V
- Features：PGA
- Operating Temperature：-55°C ~ 175°C
- Package / Case：28-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-TSSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1282HPW is a high-temperature, high-resolution dual-channel Delta-Sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a 31-bit resolution architecture and operates within an extended temperature range of -55°C to +175°C. The device integrates a low-noise programmable gain amplifier (PGA) and a two-channel input multiplexer. Key performance metrics include a signal-to-noise ratio (SNR) of 124 dB at 1000 SPS and a total harmonic distortion (THD) of -102 dB. It utilizes a TSSOP-28 package with SPI interface compatibility.
Feature Summary
- Integrated low-noise programmable gain amplifier for precise signal conditioning
- Two-channel input multiplexer simplifying sensor interfacing
- Extended operating temperature range suitable for harsh environments
- High accuracy with specified integral nonlinearity and total harmonic distortion
Applications
- Industrial process control systems requiring high precision
- Medical instrumentation such as ECG and EEG devices
- Geophysical exploration equipment
- Seismic data acquisition systems
Procurement Notes
Verify the specific suffix 'H' indicates the high-temperature variant (-55°C to +175°C) distinct from standard commercial grades. Confirm package type is TSSOP-28. Ensure supply chain sources provide original manufacturer documentation to validate authenticity and thermal specifications before integration into designs.
Selection Notes
Select this component when applications demand high resolution in extreme thermal conditions. Compare SNR and power consumption against standard ADS1282 variants if operating temperatures remain within commercial ranges. Evaluate PGA settings against expected input signal amplitudes to optimize dynamic range without external amplification.
Part Context
This part belongs to the ADS1282 family of high-resolution ADCs. While sharing core architectural similarities with standard versions, the HPW designation specifically denotes enhanced thermal robustness. It serves as a specialized solution for demanding industrial and medical applications where standard commercial-grade components may fail due to environmental stress.
Replacement Considerations
- ADS1282IPW
- ADS1282PW
FAQ
What is the maximum operating temperature for the ADS1282HPW?
The ADS1282HPW supports an extended operating temperature range up to +175°C.
Does the ADS1282HPW include an internal reference voltage?
No, the datasheet specifies an external reference voltage requirement; it does not integrate an internal reference.
