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Product Detailed Parameters
- Description：ANALOG DATA CONVERTR
- 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：-40°C ~ 85°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 ADS1282IPW is a high-resolution, single-chip analog-to-digital converter (ADC) from Texas Instruments. It features a fourth-order delta-sigma modulator with an integrated low-noise programmable gain amplifier (PGA) and a two-channel input multiplexer. The device provides up to 31-bit resolution without missing codes and achieves a signal-to-noise ratio of 130 dB at 250 SPS. It supports selectable data rates from 250 SPS to 4 kSPS via a flexible digital filter comprising sinc, FIR, and IIR sections. Powered by unipolar (+5 V) or bipolar (±2.5 V) analog supplies and a 1.8 V to 3.6 V digital supply, it dissipates 25 mW in normal operation. The component is housed in a TSSOP-28 package.
Feature Summary
- High Resolution: 31-bit resolution with 130 dB SNR at 250 SPS and -122 dB THD.
- Integrated Front-End: Features a low-noise PGA (5 nV/√Hz) with gains from 1 to 64 and a two-channel input multiplexer.
- Flexible Digital Filter: Offers selectable data rates (250–4000 SPS) using Sinc + FIR + IIR filters with linear or minimum phase response options.
- Low Power Consumption: Consumes 25 mW during normal operation and drops to 10 μW in shutdown mode.
Applications
- Energy Exploration
- Seismic Monitoring
- High-Accuracy Instrumentation
Procurement Notes
Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm pinout and thermal characteristics. Ensure the design accommodates the required external reference voltage and bypass capacitors for the BYPAS pin as specified in the electrical characteristics.
Selection Notes
Select this component for applications requiring high dynamic range and low noise, such as geophone or hydrophone interfaces. Note that the base ADS1282 is optimized for low-impedance sensors; consider the ADS1282H variant if interfacing with high-impedance sensors like hydrophones.
Part Context
The ADS1282 belongs to the ADS1282 family of high-performance ADCs. It is functionally similar to the ADS1282H but differs in input stage optimization. The IPW suffix indicates a TSSOP-28 surface-mount package with industrial temperature specifications.
Replacement Considerations
ADS1282IPWR is the tape-and-reel version of the same device. ADS1282H variants offer improved input stages for high-impedance sensors but require verification of interface compatibility.
