My Inquiry
My Account
Texas Instruments ADS1271IPW
- Part No.:
- ADS1271IPW
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS1271IPW.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:529
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS1271IPW from Texas Instruments is a 24-bit delta-sigma analog-to-digital converter (ADC) optimized for high-precision industrial measurement systems. It delivers 105kSPS data rate in High-Speed mode, 109dB SNR in High-Resolution mode, and 35mW power dissipation in Low-Power mode, with ±0.0006%FSR INL, 1.8µV/°C offset drift, and operation from −40°C to +105°C. It serves as the front-end digitizer in vibration analysis, acoustic sensing, and dynamic strain gauge systems requiring simultaneous DC accuracy and wide AC bandwidth.
For engineers reviewing the ADS1271IPW datasheet, ADS1271IPW pinout, ADS1271IPW application, or ADS1271IPW equivalent, this page provides verified technical context on its chopper-stabilized 6th-order modulator architecture, daisy-chainable SPI/frame-sync interface, pin-driven mode selection (no register programming), and multichannel synchronization capability - all critical for embedded test-and-measurement hardware design.
Technical Context
The ADS1271IPW integrates a 6th-order chopper-stabilized delta-sigma modulator followed by a linear-phase FIR decimation filter with ±0.005dB passband ripple and 100dB stopband attenuation. Its modulator operates at fCLK/4 (High-Speed/High-Resolution) or fCLK/8 (Low-Power), enabling configurable tradeoffs between noise floor, bandwidth, and power.
It supports three pin-configured operating modes: High-Speed (105.5kSPS, 47.8kHz usable bandwidth), High-Resolution (52.7kSPS, 109dB SNR, 6.5µVrms noise), and Low-Power (52.7kSPS, 35mW total dissipation). The device offers direct modulator output access and external synchronization via SYNC/PDWN, making it suitable for time-aligned multi-ADC acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit, no missing codes - ensures full dynamic range utilization without code gaps in precision measurement. |
| Data Rate (High-Speed) | 105,469 SPS - enables real-time capture of signals up to 47.8kHz (90% Nyquist) with minimal latency. |
| SNR (High-Resolution) | 109 dB - achieves sub-1µVrms effective noise floor for low-level sensor signal digitization. |
| Offset Drift | 1.8 µV/°C - maintains calibration stability across extended industrial temperature range (−40°C to +105°C). |
| Gain Drift | 2 ppm/°C - preserves gain accuracy over temperature without software compensation. |
| Power Dissipation (Low-Power) | 35 mW - reduces thermal load and enables dense multichannel designs with minimal cooling requirements. |
| Passband Ripple | ±0.005 dB - guarantees flat frequency response for amplitude-critical applications like modal analysis. |
Pinout & Package
TSSOP-16 (PW) package: 5mm × 4.4mm body, 0.65mm pitch, 16-pin thin shrink small-outline package with exposed pad for thermal performance in industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP / AINN | Differential Analog Input | Accepts ±VREF differential input; high-impedance switched-capacitor input (16.4kΩ in High-Speed mode) requires buffered drive for optimal THD. |
| VREFP / VREFN | Differential Reference Input | Defines full-scale range (2×VREF); reference impedance varies with modulator clock (4.2kΩ typical), demanding low-noise, high-drive reference source. |
| MODE | Operating Mode Control | Logic level selects High-Speed (0), High-Resolution (float), or Low-Power (1) - no firmware or register writes required. |
| FORMAT | Interface Protocol Select | Selects SPI (0), Frame-Sync (1), or modulator output (float on ADS1271B only) - determines DRDY/FSYNC function and SCLK timing. |
| SYNC/PDWN | Synchronization & Power Control | Active-low input for system-wide ADC synchronization or power-down entry - critical for phase-coherent multichannel sampling. |
| DOUT / DIN | Daisy-Chain Interface | Enables serial cascading of multiple ADS1271IPW devices using single SCLK/DRDY lines - reduces GPIO count in dense channel systems. |
| DRDY/FSYNC | Mode-Dependent Control | Output (DRDY) in SPI mode signals data ready; input (FSYNC) in Frame-Sync mode triggers frame-aligned conversions across devices. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized 6th-order modulator | Reduces 1/f noise and drift to enable <1.8µV/°C offset drift and stable DC accuracy over temperature. |
| Linear-phase FIR decimation filter | Delivers ±0.005dB passband ripple and 100dB stopband attenuation - preserves signal integrity for spectral analysis. |
| Pin-driven configuration | Eliminates register programming overhead; MODE, FORMAT, and SYNC/PDWN pins directly control operation and interface behavior. |
| Daisy-chainable serial interface | Allows up to 16+ ADS1271IPW devices on shared SCLK/DRDY lines - simplifies routing and reduces host controller resource usage. |
| Modulator output option | Provides raw bitstream for custom digital filtering or oversampling applications - extends flexibility beyond onboard FIR filter. |
Applications
| Vibration/Modal Analysis | Acoustics |
|---|---|
Use Scenario: Capturing structural resonance frequencies and damping ratios from accelerometer outputs in rotating machinery or aerospace components. IC Role / Device Role / Timing Role: Primary high-fidelity digitizer converting differential piezoelectric sensor outputs with 105kSPS throughput and 47.8kHz usable bandwidth. Use Value: 109dB SNR and 1.8µV/°C drift ensure accurate amplitude and phase tracking across thermal cycles during long-duration tests. | Use Scenario: Digitizing microphone or hydrophone signals in noise mapping, ultrasound imaging, or active noise cancellation systems. IC Role / Device Role / Timing Role: High-linearity ADC front-end preserving harmonic content and low-level signal fidelity up to 47.8kHz. Use Value: −108dB THD and ±0.005dB passband ripple prevent spectral distortion critical for FFT-based acoustic signature analysis. |
| Dynamic Strain Gauges | Pressure Sensors |
Use Scenario: Reading Wheatstone bridge outputs from bonded foil or semiconductor strain gauges under cyclic mechanical loading. IC Role / Device Role / Timing Role: Precision ratiometric ADC measuring bridge voltage differentials against stable reference, rejecting common-mode noise. Use Value: 2ppm/°C gain drift and 0.0006%FSR INL maintain calibration integrity during thermal transients in engine or hydraulic testing. | Use Scenario: Converting output of piezoresistive or capacitive pressure transducers in industrial process control or medical instrumentation. IC Role / Device Role / Timing Role: Low-drift, high-SNR digitizer interfacing with signal-conditioning amplifiers to resolve sub-millibar pressure changes. Use Value: 6.5µVrms noise (High-Resolution mode) and −40°C to +105°C operation support high-resolution barometric or differential pressure monitoring in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1278IPAP | 8-channel simultaneous-sampling variant with identical core architecture, 109dB SNR, but larger HTQFP-64 package and higher power (140mW). | Designed for synchronized multi-sensor arrays where channel count >1 is mandatory; not pin-compatible with ADS1271IPW. | Select when simultaneous acquisition across ≥2 channels is required and board space allows HTQFP-64 footprint. |
| AD7768-1BCPZ | Single-channel 24-bit sigma-delta ADC with 128kSPS, 112dB SNR, and integrated buffer; uses SPI-only interface and requires register configuration. | Offers higher SNR and built-in input buffer but lacks pin-driven simplicity and daisy-chain capability of ADS1271IPW. | Select when maximum SNR (112dB) and integrated buffering outweigh need for pin-strapped operation and multichannel synchronization. |
Compared with ADS1278IPAP and AD7768-1BCPZ, the ADS1271IPW uniquely balances single-channel precision (109dB SNR), ultra-low drift (1.8µV/°C), pin-configured flexibility, and daisy-chain scalability - making it optimal for cost-sensitive, thermally demanding, or modular multichannel test systems where register-free setup is prioritized.
Availability
ADS1271IPW is available at Aetrix Electronics and suitable for vibration analysis, acoustic sensing, and dynamic strain gauge applications requiring stable component supply across extended industrial temperature ranges and long production lifecycles.
Supply support for ADS1271IPW 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 decades of expertise in precision data converters and industrial-grade IC design.
The ADS1271IPW belongs to TI's high-accuracy delta-sigma ADC product line, engineered specifically for industrial test-and-measurement equipment that demands uncompromised DC stability and wide-band AC fidelity in a single-chip solution.
FAQ
What are the supported operating modes of the ADS1271IPW and how are they selected?
The ADS1271IPW supports three operating modes: High-Speed (105.5kSPS), High-Resolution (109dB SNR), and Low-Power (35mW). These are selected solely by the logic state of the MODE pin - 0 for High-Speed, floating for High-Resolution, and 1 for Low-Power. No register writes or firmware configuration are needed, enabling simple hardware-based optimization for speed, resolution, or power in the ADS1271IPW.
Does the ADS1271IPW require external configuration registers to operate?
No, the ADS1271IPW uses pin-driven control with no internal registers. All functions - including mode selection (MODE), interface format (FORMAT), and synchronization/power-down (SYNC/PDWN) - are controlled directly by logic levels on dedicated pins. This eliminates firmware initialization overhead and ensures deterministic startup behavior in the ADS1271IPW, ideal for safety-critical or boot-time-constrained systems.
What is the purpose of the FORMAT pin on the ADS1271IPW?
The FORMAT pin on the ADS1271IPW selects the serial interface protocol: logic 0 configures SPI mode (with DRDY output), logic 1 enables Frame-Sync mode (with FSYNC input), and floating selects modulator output (ADS1271B only). This pin directly determines whether the DRDY/FSYNC pin functions as a data-ready indicator or synchronization trigger - a key hardware-level decision in the ADS1271IPW's interface architecture.
Can multiple ADS1271IPW devices be synchronized for coherent sampling?
Yes, the ADS1271IPW supports precise multichannel synchronization via its SYNC/PDWN pin. When driven synchronously across multiple devices, this pin aligns conversion start times, and combined with daisy-chainable DOUT/DIN, enables phase-coherent acquisition across distributed sensor nodes - a core capability confirmed in the ADS1271IPW datasheet for vibration and acoustic array applications.
What are the absolute maximum ratings for analog and digital supplies on the ADS1271IPW?
The ADS1271IPW specifies AVDD = −0.3V to +6.0V and DVDD = −0.3V to +3.6V as absolute maximum supply ratings. Operating ranges are tighter: AVDD = 4.75V to 5.25V and DVDD = 1.65V to 3.6V. Exceeding these limits risks permanent damage; the ADS1271IPW also requires AGND–DGND separation within −0.3V to +0.3V to prevent ground loop errors in mixed-signal layouts.
ADS1271IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 105k
- Number of Inputs:
- 1
- 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:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1271IPW FAQ
1.How can I place an order for ADS1271IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1271IPW 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 ADS1271IPW reliable?
The price and inventory of ADS1271IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1271IPW is usually 5 days.
3.What payment methods are accepted for ADS1271IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1271IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1271IPW?
ADS1271IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1271IPW 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 ADS1271IPW?
For technical support, including ADS1271IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1271IPW requirements.
6.How does Aetrix verify that ADS1271IPW is sourced from the original manufacturer or authorized distributors?
All ADS1271IPW 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 ADS1271IPW meets industry standards.
7.What is the process for return or replacement of ADS1271IPW?
All ADS1271IPW units undergo pre-shipment inspection (PSI). If there is an issue with ADS1271IPW, 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 ADS1271IPW part is unused and in its original packaging.
Return procedure for ADS1271IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS1271IPW Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
