Texas Instruments ADS1278MPAPTEP

Overview

ADS1278MPAPTEP from Texas Instruments is an octal simultaneous-sampling 24-bit delta-sigma analog-to-digital converter (ADC) with up to 128-kSPS data rate, 111-dB SNR in high-resolution mode, ±0.0014% FSR INL, and 0.8-μV/°C offset drift. It operates across –55°C to 125°C and supports vibration analysis, multi-channel industrial data acquisition, and high-fidelity dynamic strain measurement.

For engineers reviewing the ADS1278MPAPTEP datasheet, ADS1278MPAPTEP pinout, ADS1278MPAPTEP application, or ADS1278MPAPTEP equivalent, this page delivers verified electrical specs, military-grade thermal performance, HTQFP-64 PowerPAD package details, and validated alternatives for defense, aerospace, and medical signal conditioning systems.

Technical Context

The ADS1278MPAPTEP integrates a high-order chopper-stabilized modulator achieving low in-band noise and minimal drift, paired with an onboard linear-phase digital decimation filter that delivers ≤0.005 dB passband ripple and usable bandwidth up to 90% of Nyquist. Its four pin-controlled operating modes-High-Speed (128 kSPS), High-Resolution (52 kSPS), Low-Power (52 kSPS), and Low-Speed (10 kSPS)-eliminate register programming overhead.

It supports both SPI and frame-sync serial interfaces with TDM/discrete output options, features modulator output bypass capability, and provides eight independent differential analog inputs (AINP[8:1]/AINN[8:1]) with channel-specific power-down control (PWDN[8:1]). The device uses separate analog (5 V), digital core (1.8 V), and I/O (1.8–3.3 V) supplies for optimized noise isolation.

Key Specifications

Pinout & Package

ADS1278MPAPTEP is housed in an HTQFP-64 PowerPAD™ package (PAP), featuring exposed thermal pad for enhanced heat dissipation (θJC = 6.2°C/W). Pin count: 64. Package footprint: 10 mm × 10 mm, 0.5-mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal simultaneous-sampling ADC applications.

Compared with ADS1278IPAP, the ADS1278MPAPTEP adds military-grade temperature range, process control, and traceability-critical for deployed systems-while ADS127L11MPAPTEP offers lower power at minor SNR cost, making it suitable for size- and thermal-constrained defense platforms where 109 dB SNR remains sufficient.

Availability

ADS1278MPAPTEP is available at Aetrix Electronics and suitable for vibration analysis systems, defense radar front-ends, and medical ultrasound beamformers requiring stable component supply under extended temperature and long-lifecycle conditions.

Supply support for ADS1278MPAPTEP 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 heritage in high-precision data converters and industrial-grade IC design.

The ADS1278MPAPTEP belongs to TI's radiation-tolerant, extended-temperature precision ADC product line-engineered specifically for mission-critical signal acquisition in defense, aerospace, and medical instrumentation where reliability, stability, and long-term availability are non-negotiable.

FAQ

What is the maximum data rate supported by ADS1278MPAPTEP in High-Speed mode?

The ADS1278MPAPTEP achieves a maximum data rate of 128,000 samples per second (SPS) in High-Speed mode when configured with fCLK = 32.768 MHz. At this rate, it maintains 106-dB SNR and supports simultaneous sampling across all eight channels with guaranteed timing alignment and <±300 ps inter-channel skew. This mode is ideal for broadband vibration monitoring and real-time spectral analysis.

Does ADS1278MPAPTEP support external reference voltage sources?

Yes, ADS1278MPAPTEP accepts external differential reference voltages via VREFP and VREFN pins, supporting 0.5 V to 3.1 V (fCLK = 27 MHz) or up to 2.6 V (fCLK = 32.768 MHz). Reference input impedance ranges from 0.65 kΩ (High-Speed/High-Resolution) to 6.5 kΩ (Low-Speed), enabling compatibility with precision voltage references like REF5025 or REF6025 while maintaining optimal noise and settling performance.

How does the pin-strapped MODE[1:0] configuration affect ADS1278MPAPTEP operation?

The MODE[1:0] pins on ADS1278MPAPTEP directly select one of four fixed operating modes without register writes: 00 = High-Speed (128 kSPS), 01 = High-Resolution (52 kSPS, 111 dB SNR), 10 = Low-Power (52 kSPS, 31 mW/ch), and 11 = Low-Speed (10 kSPS, 7 mW/ch). This hardware-only control simplifies system design, eliminates firmware dependencies, and ensures deterministic startup behavior in safety-critical applications.

What thermal performance metrics are specified for ADS1278MPAPTEP in its HTQFP-64 PowerPAD package?

ADS1278MPAPTEP in the HTQFP-64 PowerPAD (PAP) package has θJA = 33.1°C/W (JEDEC high-K board), θJC = 6.2°C/W, and ψJB = 7.8°C/W. These values reflect validated thermal resistance under military-grade test conditions, enabling accurate junction temperature prediction in conduction-cooled avionics enclosures or sealed medical housings-critical for ensuring long-term reliability at 125°C ambient.

Can ADS1278MPAPTEP be used with SPI and Frame-Sync interfaces simultaneously?

No-ADS1278MPAPTEP supports either SPI or Frame-Sync protocol, selected via FORMAT[2:0] pins; both cannot operate concurrently. In SPI mode, DRDY serves as data-ready flag and DOUT[8:1] deliver sequential channel data. In Frame-Sync mode, FSYNC acts as frame clock and DOUT[8:1] provide time-division multiplexed (TDM) outputs-enabling deterministic synchronization with FPGA-based digital signal processors in radar and sonar systems.