Texas Instruments ADS7854IPWR

Overview

ADS7854IPWR from Texas Instruments is a dual, simultaneous-sampling, 14-bit analog-to-digital converter (ADC) with fully-differential inputs, 1 MSPS throughput, ±1.5-LSB max INL, and 88-dB typical SNR - deployed in motor position feedback loops requiring precise, time-aligned channel acquisition.

For engineers reviewing the ADS7854IPWR datasheet, ADS7854IPWR pinout, ADS7854IPWR application, or ADS7854IPWR equivalent, this page delivers verified specifications, TSSOP-16 package details, dual-channel timing alignment data, and validated alternatives for industrial control and power quality systems.

Technical Context

The ADS7854IPWR implements two independent SAR ADC cores sharing a common clock domain to guarantee true simultaneous sampling across AINP_A/AINM_A and AINP_B/AINM_B. It supports both 16-clock and 32-clock serial interface modes, enabling flexible host controller integration while maintaining <40 ps inter-channel aperture match.

Its dual programmable reference architecture allows independent internal 2.5-V reference sourcing per channel (REFIO_A/REFIO_B), with buffered outputs and ±1 mV matching at 25°C - critical for gain-matched differential signal chains in three-phase power monitoring.

Key Specifications

Pinout & Package

TSSOP-16 package (5.00 mm × 4.40 mm) with exposed thermal pad (not electrically connected); RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8354IPWR and ADS7254IPWR, the ADS7854IPWR uniquely balances 14-bit precision, 1-MSPS throughput, and simultaneous sampling - making it optimal for mid-tier industrial drives where both accuracy and bandwidth matter.

Availability

ADS7854IPWR is available at Aetrix Electronics and suitable for motor control, power quality monitoring, and protection relay applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADS7854IPWR 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 ADSxx54 family - including ADS7854IPWR - was designed specifically for high-reliability, simultaneous-sampling applications in motor control, power electronics, and grid infrastructure where channel coherence and DC accuracy are non-negotiable.

FAQ

What is the maximum sampling rate of the ADS7854IPWR?

The ADS7854IPWR achieves a maximum throughput of 1 million samples per second (1 MSPS) in both 16-clock and 32-clock serial interface modes. This rate is guaranteed across the full operating temperature range (–40°C to +125°C) with AVDD = 5 V and DVDD = 3.3 V, enabling real-time capture of fast transients in protection relay and inverter control systems. The ADS7854IPWR maintains full 14-bit performance at this rate.

Does the ADS7854IPWR support external reference voltage sources?

Yes, the ADS7854IPWR supports external reference voltages on both REFIO_A and REFIO_B pins, accepting 2.4 V to AVDD (for ±VREF mode) or 2.4 V to AVDD/2 (for ±2×VREF mode). When using external references, the internal 2.5-V reference is disabled, reducing power consumption by ~1 mA. The ADS7854IPWR specifies ±0.1 μA DC leakage on REFIO pins to minimize reference loading error.

How does the ADS7854IPWR ensure simultaneous sampling between its two channels?

The ADS7854IPWR uses a shared sampling capacitor array and synchronized track-and-hold circuitry for both channels, guaranteeing identical aperture instants. Its datasheet specifies <40 ps inter-channel aperture delay match (tA match) and –90 dB ADC-to-ADC isolation (ISOXT) at 25 kHz - ensuring phase-coherent acquisition critical for vector control and power quality analysis. No external synchronization circuitry is required.

What package options are available for the ADS7854IPWR?

ADS7854IPWR is offered exclusively in the TSSOP-16 package (5.00 mm × 4.40 mm body size), with lead-free, RoHS-compliant finish. It is pin-compatible with the WQFN-16 variant (ADS7854IRTER), but the 'PWR' suffix denotes the TSSOP version. Thermal design must account for RθJA = 86.9°C/W; TI recommends connecting the exposed pad to PCB ground for improved thermal performance, though it is not electrically connected.

Can the ADS7854IPWR operate with different supply voltages on AVDD and DVDD?

Yes, the ADS7854IPWR supports independent supply rails: AVDD operates at 4.5 V to 5.5 V (nominal 5 V) for analog core stability, while DVDD accepts 1.65 V to 5.5 V (typical 3.3 V) for digital I/O compatibility with modern microcontrollers and FPGAs. The device specifies VIH = 0.7×DVDD and VIL = 0.3×DVDD, ensuring robust logic-level interfacing across mixed-voltage systems without level shifters.