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Texas Instruments ADS1282HPW
- Part No.:
- ADS1282HPW
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS1282HPW.pdf
- Description:
- IC ADC 31BIT SIGMA-DELTA 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,878
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Product details
Overview
ADS1282HPW from Texas Instruments is a high-temperature, 31-bit delta-sigma analog-to-digital converter (ADC) with integrated low-noise PGA, two-channel MUX, and programmable digital filter. It delivers 124-dB SNR at 1000 SPS, –102 dB THD, and 0.5 ppm INL, operating across –55°C to 210°C. It is engineered for seismic monitoring and down-hole drilling instrumentation where extreme temperature stability and ultra-low noise are critical.
For engineers reviewing the ADS1282HPW datasheet, ADS1282HPW pinout, ADS1282HPW application, or ADS1282HPW equivalent, this page provides verified technical context, validated pin functions, confirmed high-temperature performance specs, and real-world deployment constraints - all specific to the PW-package variant of the ADS1282 family.
Technical Context
The ADS1282HPW implements a fourth-order, inherently stable delta-sigma modulator paired with a flexible on-chip digital filter supporting selectable FIR, sinc, and IIR configurations. Its dual-input MUX enables external sensor routing and internal self-test paths, while the low-noise PGA (5 nV/√Hz) maintains high input impedance (>1 GΩ) for direct geophone/hydrophone interfacing.
It supports both unipolar (5 V) and bipolar (±2.5 V) analog supplies, with digital supply range of 1.75–3.3 V. The device features SYNC input for multi-device conversion alignment, DRDY-driven SPI interface, and dedicated modulator outputs (M0/M1/MCLK) for raw bitstream access - all functional across its full –55°C to 210°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 31-bit no-missing-codes output - ensures monotonicity and eliminates code gaps in precision measurement systems. |
| SNR | 124 dB at 1000 SPS - enables detection of microvolt-level signals buried in noise for seismic transducers. |
| THD | –102 dB (PGA = 1–16) - preserves signal fidelity in high-dynamic-range instrumentation without harmonic distortion artifacts. |
| Data Rate | 250–4000 SPS (FIR mode); up to 128 kSPS (sinc mode) - balances resolution vs. throughput for real-time geophysical data acquisition. |
| INL | 0.5 ppm - guarantees sub-ppm linearity over full scale, critical for calibration traceability in energy exploration tools. |
| Operating Temp | –55°C to 210°C - qualified for down-hole drilling environments where ambient temperatures exceed 175°C. |
| Power Dissipation | 25 mW at 210°C - sustains high-resolution operation under extreme thermal stress without derating. |
Pinout & Package
TSSOP-28 package (4.40 mm × 9.70 mm), thermally optimized for high-reliability industrial and down-hole applications. Pin functions validated per TI SBAS446H Rev H (2016).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP1 / AINN1 | Differential analog input channel 1 | Accepts ±2.5 V bipolar or 0–5 V unipolar signals; supports >1 GΩ differential input impedance with PGA enabled. |
| AINP2 / AINN2 | Differential analog input channel 2 | Enables multiplexed dual-sensor acquisition or reference-path monitoring without external switching. |
| VREFP / VREFN | Reference voltage inputs | Accept 0.5–5 V total reference span; support ratiometric measurements with external precision references. |
| SCLK / DIN / DOUT / DRDY | SPI interface signals | Full-duplex SPI with DRDY-strobed read timing; compatible with standard microcontroller peripherals at up to 2 MHz SCLK. |
| SYNC | Global synchronization input | Aligns conversion start across multiple ADS1282HPW devices - essential for coherent multi-channel seismic arrays. |
| PWDN / RESET | Power control and initialization | Active-low power-down reduces current to 220 µA; hardware reset ensures deterministic startup state. |
| AVDD / AVSS / DVDD / DGND | Supply and ground terminals | Separate analog/digital supplies minimize noise coupling; AVSS supports –2.6 V to 0 V, enabling true bipolar operation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable digital filter | Selectable FIR/sinc/IIR with linear or minimum-phase response, 0.1–10 Hz high-pass corner - enables adaptive anti-aliasing and DC offset removal. |
| On-chip calibration engine | Automated offset/gain calibration reducing initial offset error to 1–2 µV and gain error to 0.0002% - eliminates manual trim in field-deployed systems. |
| Over-range detection | Dedicated MFLAG output signals modulator saturation in real time - prevents data corruption during transient overload events. |
| Low-noise PGA | 5 nV/√Hz input voltage noise density with 600 Ω differential output impedance - optimizes SNR when driving long cables to remote sensors. |
| Modulator bypass mode | M0/M1/MCLK pins expose raw bitstream for custom post-processing - supports proprietary filtering or real-time spectral analysis. |
Applications
| Seismic Data Acquisition | Down-Hole Drilling Sensors |
|---|---|
|
Use Scenario: High-density geophone arrays deployed in boreholes monitor microseismic events during hydraulic fracturing. IC Role / Device Role / Timing Role: Primary ADC digitizing low-amplitude, low-frequency (<100 Hz) vibration signals with ultra-low noise floor and thermal drift immunity. Use Value: 124-dB SNR and 0.5 ppm INL enable detection of sub-nanometer displacements; 210°C rating permits operation within drill string electronics modules. |
Use Scenario: Real-time pressure, temperature, and vibration sensing inside drill collars during deep-earth drilling operations. IC Role / Device Role / Timing Role: Precision front-end ADC for ruggedized MWD (Measurement While Drilling) tools requiring continuous operation above 175°C. Use Value: Controlled baseline manufacturing and extended lifecycle support ensure supply continuity; 25 mW dissipation avoids thermal runaway in confined down-hole housings. |
| High-Temperature Test Equipment | Energy Exploration Instrumentation |
|
Use Scenario: Calibration-grade benchtop analyzers used in oilfield service labs to validate sensor accuracy under thermal cycling. IC Role / Device Role / Timing Role: Reference-grade ADC in metrology subsystems performing NIST-traceable calibration of geophysical transducers. Use Value: Offset drift <0.19 µV/°C and gain drift <3 ppm/°C (PGA=1) maintain calibration integrity across –55°C to 210°C thermal profiles. |
Use Scenario: Autonomous seabed node arrays capturing long-term ocean-bottom seismic data for hydrocarbon reservoir mapping. IC Role / Device Role / Timing Role: Low-power, high-stability ADC in battery-powered nodes requiring multi-year deployment without maintenance. Use Value: Standby current as low as 255 µA (PW package) extends operational life; SPI interface simplifies integration with low-power MCUs and flash storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, high-temperature ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1282SP | CDIP SB package (7.49 mm × 35.56 mm); identical electrical specs but larger footprint and higher RθJA (43.1°C/W vs. 54.6°C/W for PW). | Better suited for lab-based test equipment where board space is unconstrained and airflow aids cooling. | Select ADS1282SP only when mechanical mounting or legacy layout compatibility requires through-hole packaging. |
| ADS127L25 | 25-bit resolution, 112-dB SNR, –55°C to 125°C rating; lower power (15 mW), no integrated PGA or MUX. | Targeted at cost-sensitive, lower-precision industrial monitoring - not rated for >125°C environments. | Choose ADS127L25 only for surface-level instrumentation where 210°C operation is unnecessary and system-level PGA is already present. |
Compared with ADS1282SP and ADS127L25, the ADS1282HPW uniquely combines TSSOP-28 compactness, full –55°C to 210°C qualification, integrated PGA+MUX, and 31-bit resolution - making it the sole option for miniaturized, ultra-stable down-hole data loggers requiring no external signal conditioning.
Availability
ADS1282HPW is available at Aetrix Electronics and suitable for seismic monitoring, down-hole drilling, and high-temperature test equipment requiring stable component supply across extended product lifecycles and extreme environmental conditions.
Supply support for ADS1282HPW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with deep expertise in high-reliability, high-temperature signal chain solutions.
The ADS1282HPW belongs to TI's high-temperature precision ADC product line, designed specifically for energy exploration and geophysical instrumentation where sustained operation beyond 175°C and uncompromised DC/AC accuracy are non-negotiable.
FAQ
What is the maximum operating temperature of the ADS1282HPW?
The ADS1282HPW is fully specified and production-tested from –55°C to 210°C. Its controlled baseline manufacturing, single assembly/test site, and extended product lifecycle ensure consistent performance at the upper limit of this range - critical for down-hole drilling electronics where ambient temperatures routinely exceed 175°C. The ADS1282HPW datasheet confirms 210°C operation with validated SNR, THD, and INL parameters.
Does the ADS1282HPW include an integrated programmable gain amplifier?
Yes, the ADS1282HPW integrates a low-noise, digitally programmable gain amplifier (PGA) with 5 nV/√Hz input voltage noise density and gain settings from 1 to 64. This PGA is directly connected to the two-channel analog input MUX and supports high-impedance sensor interfaces such as geophones and hydrophones - eliminating the need for external amplification stages in ADS1282HPW-based designs.
Can the ADS1282HPW operate with a bipolar analog supply?
Yes, the ADS1282HPW supports bipolar analog supplies: AVDD = +2.5 V and AVSS = –2.5 V (or any combination within AVSS to AVDD ≤ 5.5 V). This enables true differential input ranges up to ±2.5 V, essential for measuring AC-coupled seismic signals with zero-center swing. The device also supports unipolar 0–5 V operation, providing flexibility across sensor types and system architectures.
What digital interface does the ADS1282HPW use, and is it SPI-compatible?
The ADS1282HPW uses a standard 4-wire SPI interface with dedicated SCLK, DIN, DOUT, and DRDY signals. It operates at SCLK rates up to 2 MHz and supports command-based register reads/writes, data streaming, and status polling via DRDY. The interface is fully compatible with common microcontrollers and FPGAs - no proprietary protocol or additional logic is required to implement ADS1282HPW communication.
How does the ADS1282HPW handle over-range conditions during conversion?
The ADS1282HPW provides real-time over-range detection via the dedicated MFLAG pin, which asserts high when the modulator saturates. This flag operates independently of the digital filter path and responds within one modulator clock cycle - enabling immediate system-level intervention (e.g., gain adjustment or alarm triggering) before corrupted data propagates through the FIR/sinc filter. MFLAG behavior is guaranteed across the full –55°C to 210°C temperature range.
ADS1282HPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
- Supplier Device Package:
- 28-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1282HPW FAQ
1.How can I place an order for ADS1282HPW through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1282HPW on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS1282HPW reliable?
The price and inventory of ADS1282HPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1282HPW is usually 5 days.
3.What payment methods are accepted for ADS1282HPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1282HPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1282HPW?
ADS1282HPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1282HPW order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS1282HPW?
For technical support, including ADS1282HPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1282HPW requirements.
6.How does Aetrix verify that ADS1282HPW is sourced from the original manufacturer or authorized distributors?
All ADS1282HPW products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS1282HPW meets industry standards.
7.What is the process for return or replacement of ADS1282HPW?
All ADS1282HPW units undergo pre-shipment inspection (PSI). If there is an issue with ADS1282HPW, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS1282HPW part is unused and in its original packaging.
Return procedure for ADS1282HPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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