Texas Instruments ADS1274IPAPR

Overview

ADS1274IPAPR 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 operation over –40°C to +105°C. It serves as the front-end digitizer in precision industrial data acquisition systems requiring synchronized multi-channel measurement of vibration, pressure, or dynamic strain signals.

For engineers reviewing the ADS1274IPAPR datasheet, ADS1274IPAPR pinout, ADS1274IPAPR application, or ADS1274IPAPR equivalent, this page delivers verified technical context, exact pin functions, real-world operating modes, and validated alternative options - all grounded in TI's SBAS367F datasheet and official package documentation.

Technical Context

The ADS1274IPAPR employs a chopper-stabilized, high-order delta-sigma modulator followed by a linear-phase digital decimation filter with eight selectable configurations. Its architecture enables simultaneous sampling across four differential input pairs while maintaining <0.005dB passband ripple and 90% Nyquist bandwidth utilization.

All operating modes - High-Speed (144kSPS), High-Resolution (52.7kSPS), Low-Power (52.7kSPS, 31mW/ch), and Low-Speed (10.5kSPS) - are controlled directly via MODE[1:0] pins; no register programming is required. The device supports both SPI and Frame-Sync serial interfaces, with configurable TDM/discrete output formats via FORMAT[2:0].

Key Specifications

Pinout & Package

ADS1274IPAPR is housed in an HTQFP-64 PowerPAD™ package (PAP) with exposed thermal pad. Pin assignments are defined per TI SBAS367F Rev F, Table 1. All pins are electrically validated for the ADS1274 variant; ADS1278-specific pins (e.g., AINP5–AINP8, PWDN5–PWDN8) are internally tied off or unused.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision, multi-channel ADC applications.

Compared with ADS1274IPAPR, ADS1278IPAPR offers direct hardware scalability within the same footprint, while AD7768-4ACPZ provides higher integration (on-chip buffer, PGA) at the cost of interface flexibility and pin compatibility - making ADS1274IPAPR optimal for systems prioritizing deterministic timing, dual-protocol support, and seamless 4→8 channel migration.

Availability

ADS1274IPAPR is available at Aetrix Electronics and suitable for vibration analysis systems, multi-channel industrial DAQ modules, and high-fidelity acoustic sensing applications requiring stable component supply, long-lifecycle assurance, and traceable sourcing.

Supply support for ADS1274IPAPR 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 ADS1274IPAPR belongs to TI's high-performance delta-sigma ADC family engineered for demanding industrial measurement applications - emphasizing simultaneous sampling, ultra-low drift, and robust operation across extended temperature ranges.

FAQ

What is the maximum data rate supported by ADS1274IPAPR in High-Speed mode?

The ADS1274IPAPR achieves a maximum data rate of 144.531kSPS in High-Speed mode when configured with fCLK = 37MHz. This specification is guaranteed across the full industrial temperature range (–40°C to +105°C) and enables real-time capture of signals up to ~70kHz bandwidth. Operation at 37MHz requires DVDD ≥2.0V per TI SBAS367F Section 6.3.

Does ADS1274IPAPR support both SPI and Frame-Sync serial interfaces?

Yes, ADS1274IPAPR supports both protocols via FORMAT[2:0] pin configuration. In SPI mode, DRDY serves as data-ready output; in Frame-Sync mode, FSYNC acts as frame clock input. SCLK operates as serial clock in both modes, and DOUT1–DOUT4 deliver channel data either in discrete or TDM format depending on FORMAT settings.

What is the operating temperature range for ADS1274IPAPR?

The ADS1274IPAPR is fully specified over the extended industrial temperature range of –40°C to +105°C. This rating applies to all key AC and DC performance parameters including SNR, INL, offset drift, and gain drift - ensuring reliability in harsh environments such as motor control cabinets or outdoor instrumentation enclosures.

How does the ADS1274IPAPR handle channel power-down?

ADS1274IPAPR provides individual channel power-down control via PWDN1–PWDN4 pins. Driving any PWDNx pin high disables its corresponding analog input path and associated digital circuitry, reducing total supply current. Unused channels (e.g., AINP5–AINP8) are internally connected to ESD rails and must be held at 0V per datasheet guidance.

Is ADS1274IPAPR pin-compatible with ADS1278IPAPR?

Yes, ADS1274IPAPR and ADS1278IPAPR share identical HTQFP-64 (PAP) packaging and pinout. All ADS1274 signals map one-to-one with the first four channels of ADS1278; unused ADS1278 pins (e.g., AINP5–AINP8, PWDN5–PWDN8) are reserved and must be tied low or left floating per datasheet instructions - enabling true drop-in upgrade capability.