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Texas Instruments ADS1274IPAPTG4
- Part No.:
- ADS1274IPAPTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-PowerTQFP
- Datasheet:
-
ADS1274IPAPTG4.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
ADS1274IPAPTG4 from Texas Instruments is a quad-channel, simultaneous-sampling, 24-bit delta-sigma analog-to-digital converter (ADC) with up to 144kSPS data rate, 111dB SNR in High-Resolution mode, ±0.0012% FSR INL, and 0.8μV/°C offset drift. It operates with 5V analog supply, 1.8V digital core, and 1.8–3.3V I/O supply, targeting high-precision industrial data acquisition systems requiring channel-to-channel synchronization.
For engineers reviewing the ADS1274IPAPTG4 datasheet, ADS1274IPAPTG4 pinout, ADS1274IPAPTG4 application, or ADS1274IPAPTG4 equivalent, key selection criteria include simultaneous four-channel sampling capability, selectable operating modes (High-Speed/High-Resolution/Low-Power/Low-Speed), SPI or frame-sync interface support, linear-phase digital filter, and modulator output bypass option for custom filtering.
Technical Context
The ADS1274IPAPTG4 employs a high-order chopper-stabilized delta-sigma modulator achieving low drift and low in-band noise, paired with an onboard decimation filter that suppresses out-of-band noise while delivering ≤0.005dB passband ripple. Its digital filter supports four fixed operating modes controlled directly by MODE[1:0] pins-no register programming required.
It features dual-domain power architecture: AVDD (4.75–5.25V) powers analog circuitry including reference inputs and modulator; DVDD (1.65–1.95V) supplies the digital core; IOVDD (1.65–3.6V) drives the SPI/frame-sync interface. Channel power-down is managed via PWDN[4:1] pins, and synchronization across all four channels is enabled by the SYNC input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no-missing-codes - guarantees monotonicity and full dynamic range utilization in precision measurement. |
| Data Rate | Up to 144kSPS (High-Speed mode) - enables real-time vibration analysis at Nyquist bandwidth up to 70kHz. |
| SNR | 111dB (High-Resolution mode, 52kSPS) - delivers >18.4 effective bits for ultra-low-noise sensor signal capture. |
| Offset Drift | 0.8μV/°C - ensures stable DC accuracy over industrial temperature range (–40°C to +105°C). |
| Gain Drift | 1.3ppm/°C - maintains scaling fidelity across thermal cycling without recalibration. |
| Input Impedance | 14kΩ differential (High-Speed/High-Resolution modes) - minimizes loading on high-impedance transducer sources. |
| Reference Input | VREFP/VREFN = 2.5V/0V (typical) - sets ±2.5V full-scale range; supports external reference down to 0.5V. |
Pinout & Package
The ADS1274IPAPTG4 is housed in a 64-pin HTQFP PowerPAD™ package (PAP) with exposed thermal pad, optimized for low thermal resistance and EMI performance in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP1–AINP4 / AINN1–AINN4 | Differential analog inputs | Four fully independent, simultaneously sampled input pairs; AINP[4:1]/AINN[4:1] are functional; AINP[8:5]/AINN[8:5] are internally tied to ESD rails and must be held at 0V. |
| VREFP / VREFN | Reference voltage inputs | Set full-scale range (FSR = 2×VREF); VREFP accepts 0.5–2.6V, VREFN accepts –0.1 to +0.1V relative to AGND. |
| MODE0 / MODE1 | Operating mode select | Hardwired control of High-Speed (144kSPS), High-Resolution (52kSPS/111dB), Low-Power (52kSPS/31mW/ch), or Low-Speed (10kSPS/7mW/ch) modes. |
| PWDN1–PWDN4 | Channel power-down | Individual digital inputs to disable analog front-end of each channel, reducing idle current without affecting others. |
| DOUT1–DOUT4 | Serial data outputs | TDM or discrete-channel outputs; DOUT[4:1] carry converted data for channels 4 through 1 respectively. |
| DRDY/FSYNC | Data-ready / frame-sync input | Open-drain output (SPI) indicating conversion completion; configurable as frame clock input (frame-sync protocol). |
| SCLK / DIN / CLK / SYNC | Interface timing and control | SCLK clocks data transfer; DIN daisy-chains multiple devices; CLK is master clock (up to 37MHz); SYNC synchronizes all four channels' sampling instants. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous four-channel sampling | Eliminates inter-channel skew (<1ps typical), enabling coherent multi-sensor measurements like modal analysis. |
| Selectably optimized operating modes | Hardware-mode selection allows real-time trade-off between speed (144kSPS), resolution (111dB SNR), and power (7mW/ch in Low-Speed mode). |
| Linear-phase digital filter | Preserves time-domain integrity of transient signals-critical for acoustic pulse capture and dynamic strain gauge analysis. |
| Modulator output bypass | Direct access to raw bitstream enables user-defined decimation and filtering, supporting custom anti-aliasing or real-time DSP. |
| Chopper-stabilized modulator | Reduces 1/f noise and drift, achieving 0.8μV/°C offset drift and 1.3ppm/°C gain drift over full temperature range. |
Applications
| Vibration/Modal Analysis | Multi-Channel Data Acquisition |
|---|---|
Use Scenario: Capturing synchronized acceleration signals from multiple sensors mounted on rotating machinery or structural frames. IC Role / Device Role / Timing Role: Simultaneous sampling ADC providing time-coherent digitization of four vibration channels with <1ps inter-channel skew. Use Value: Enables accurate phase-based modal identification and fault detection without interpolation or post-processing alignment. | Use Scenario: High-accuracy monitoring of pressure, temperature, and strain in industrial process control cabinets. IC Role / Device Role / Timing Role: Precision front-end ADC converting four sensor outputs with 111dB SNR and 0.8μV/°C drift stability. Use Value: Reduces calibration frequency and improves long-term measurement repeatability in unattended field deployments. |
| Acoustics/Dynamic Strain Gauges | Pressure Sensors |
Use Scenario: Digitizing fast transient acoustic emissions from composite material stress testing or impact events. IC Role / Device Role / Timing Role: High-bandwidth (70kHz), linear-phase ADC preserving waveform fidelity for time-of-flight and spectral analysis. Use Value: Maintains signal integrity for accurate amplitude and phase reconstruction without group delay distortion. | Use Scenario: Converting bridge outputs from high-stability piezoresistive pressure transducers in aerospace or medical equipment. IC Role / Device Role / Timing Role: Low-drift, high-resolution ADC with 14kΩ differential input impedance matching typical sensor source impedances. Use Value: Minimizes loading error and thermal drift-induced zero-shift, improving static pressure accuracy to <0.01% FSR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, multi-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1278IPAPT | Octal-channel version in identical HTQFP-64 package; shares same pinout, timing, and feature set but adds four extra input pairs (AINP5–AINP8/AINN5–AINN8). | Supports eight simultaneous channels; requires updated firmware and layout for additional analog routing and power delivery. | Choose when system scalability to eight channels is required without redesigning interface logic or PCB stack-up. |
| AD7768-4ACPZ | Quad-channel sigma-delta ADC with 24-bit resolution, 128kSPS max, 112dB SNR, but uses SPI-only interface (no frame-sync), and requires internal register configuration. | Lacks hardware-mode pins; demands software initialization and register management; no modulator bypass output. | Prefer when SPI register control is acceptable and frame-sync synchronization or modulator bitstream access is not needed. |
Compared with ADS1278IPAPT, ADS1274IPAPTG4 provides identical performance per channel in a cost-optimized quad configuration; compared with AD7768-4ACPZ, it eliminates firmware dependency for mode selection and offers deterministic hardware-controlled timing critical for synchronized multi-sensor systems.
Availability
ADS1274IPAPTG4 is available at Aetrix Electronics and suitable for vibration analysis, multi-channel data acquisition, and acoustics instrumentation requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for ADS1274IPAPTG4 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 signal chain solutions.
The ADS127x family was designed specifically for high-fidelity, multi-channel industrial measurement applications-bridging the gap between audio-grade bandwidth and industrial-grade drift performance in a single device.
FAQ
What is the maximum sampling rate supported by the ADS1274IPAPTG4?
The ADS1274IPAPTG4 supports up to 144kSPS in High-Speed mode when configured with fCLK = 37MHz. This rate is achievable only in High-Speed mode; other modes operate at lower rates-52kSPS in High-Resolution and Low-Power modes, and 10kSPS in Low-Speed mode. All rates apply to all four channels simultaneously with inherent synchronization.
Does the ADS1274IPAPTG4 require external configuration registers to operate?
No, the ADS1274IPAPTG4 does not require external configuration registers. All operational parameters-including data rate, resolution, power mode, and interface protocol-are controlled directly by hardware pins (MODE[1:0], FORMAT[2:0], CLKDIV). This eliminates firmware overhead and ensures deterministic startup behavior critical for safety-critical or boot-fast systems.
Can the ADS1274IPAPTG4 interface with a microcontroller using standard SPI?
Yes, the ADS1274IPAPTG4 supports standard SPI communication via SCLK, DIN, DOUT1–DOUT4, and DRDY pins. The FORMAT[2:0] pins configure it for SPI protocol (as opposed to frame-sync), and timing complies with common SPI masters. It operates with IOVDD from 1.65V to 3.6V, ensuring compatibility with 1.8V, 2.5V, and 3.3V microcontrollers.
What is the purpose of the modulator output bypass feature in the ADS1274IPAPTG4?
When enabled via FORMAT[2:0], the modulator output bypass feature routes the raw delta-sigma bitstream directly to DOUT1–DOUT4, allowing external digital filters (e.g., FPGA-based FIR or custom decimation) to replace the internal digital filter. This gives designers full control over noise shaping, latency, and stopband attenuation-essential for specialized applications like real-time spectral analysis or proprietary signal conditioning.
How does the ADS1274IPAPTG4 handle channel synchronization across its four inputs?
The ADS1274IPAPTG4 achieves true hardware synchronization via its dedicated SYNC input pin. Asserting SYNC initiates simultaneous sampling across all four analog input pairs (AINP1/AINN1 through AINP4/AINN4) with sub-picosecond inter-channel skew. This eliminates software-triggered jitter and ensures phase coherence for time-sensitive applications such as beamforming or mechanical resonance mapping.
ADS1274IPAPTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 144k
- Number of Inputs:
- 4
- 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 ~ 1.95V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 64-HTQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1274IPAPTG4 FAQ
1.How can I place an order for ADS1274IPAPTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1274IPAPTG4 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 ADS1274IPAPTG4 reliable?
The price and inventory of ADS1274IPAPTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1274IPAPTG4 is usually 5 days.
3.What payment methods are accepted for ADS1274IPAPTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1274IPAPTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1274IPAPTG4?
ADS1274IPAPTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1274IPAPTG4 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 ADS1274IPAPTG4?
For technical support, including ADS1274IPAPTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1274IPAPTG4 requirements.
6.How does Aetrix verify that ADS1274IPAPTG4 is sourced from the original manufacturer or authorized distributors?
All ADS1274IPAPTG4 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 ADS1274IPAPTG4 meets industry standards.
7.What is the process for return or replacement of ADS1274IPAPTG4?
All ADS1274IPAPTG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1274IPAPTG4, 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 ADS1274IPAPTG4 part is unused and in its original packaging.
Return procedure for ADS1274IPAPTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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