Texas Instruments ADS7254IPW

Overview

ADS7254IPW from Texas Instruments is a dual, 12-bit, 1 MSPS simultaneous-sampling analog-to-digital converter with fully-differential inputs, internal 2.5-V reference, and SPI-compatible serial interface. It delivers ±1-LSB max INL, 72-dB SNR, and –90-dB THD at 1 MSPS, operating across –40°C to 125°C for real-time motor position feedback and power quality monitoring.

For engineers reviewing the ADS7254IPW datasheet, ADS7254IPW pinout, ADS7254IPW application, or ADS7254IPW equivalent, this page provides verified specifications, TSSOP-16 package details, dual-channel timing synchronization behavior, and validated alternatives for industrial control and protection relay designs.

Technical Context

The ADS7254IPW implements two independent SAR ADC cores sharing a common clock and control logic, enabling true simultaneous sampling of two fully-differential analog channels (AINP_A/AINM_A and AINP_B/AINM_B) with <40-ps inter-channel aperture match. Its flexible reference architecture supports either internal 2.5-V buffered reference or external reference up to 5 V, with dedicated REFGND_A/REFGND_B pins for noise isolation.

It uses a 16- or 32-clock serial interface over SCLK/CS/SDI/SDO_A/SDO_B pins, supporting both independent and interleaved readout modes. Power management includes STANDBY (2.5 mA) and SPD (10–50 µA) modes, with AVDD = 5 V and DVDD = 1.65–5.5 V operation confirmed across the extended industrial temperature range.

Key Specifications

Pinout & Package

TSSOP-16 package (5.00 mm × 4.40 mm), lead pitch 0.65 mm, exposed pad not present - compatible with standard reflow profiles and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7254IPW, ADS7854IPW offers 2 extra bits and lower INL for tighter control loops, while ADS8354IPW trades 300 kSPS for 4 additional bits and 21-dB SNR improvement - all share identical layout, firmware, and reference design reuse.

Availability

ADS7254IPW is available at Aetrix Electronics and suitable for motor control, protection relay, and three-phase power quality monitoring applications requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceability.

Supply support for ADS7254IPW 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 interface solutions.

The ADSxx54 family-including ADS7254IPW-is designed specifically for high-reliability, simultaneous-sampling applications in motor control, energy metering, and protective relaying where channel-to-channel timing integrity and extended temperature operation are critical.

FAQ

What is the maximum sampling rate of the ADS7254IPW?

The ADS7254IPW achieves a maximum sampling rate of 1 million samples per second (1 MSPS) in both 16-clock and 32-clock interface modes. This rate is fully specified across the –40°C to 125°C temperature range with AVDD = 5 V and DVDD = 3.3 V, enabling real-time capture of signals up to 500 kHz per channel. The ADS7254IPW maintains its 12-bit resolution and ±1-LSB INL specification at this full throughput.

Does the ADS7254IPW require an external reference voltage?

No, the ADS7254IPW includes an integrated, buffered 2.5-V reference with ±1-mV matching between channels and ±10 ppm/°C drift, eliminating the need for an external reference in most applications. However, it also supports external reference voltages from 2.4 V to AVDD (or AVDD/2 for ±2×VREF mode), allowing system-level calibration or higher-accuracy reference sources when required. The ADS7254IPW automatically detects and configures for internal or external reference use.

How does the ADS7254IPW handle simultaneous sampling of two channels?

The ADS7254IPW uses two independent SAR ADC cores triggered by a single conversion start (CONVST) signal, ensuring true simultaneous sampling with ≤40-ps aperture delay mismatch between Channel A and Channel B. This architecture guarantees phase-coherent acquisition for applications like motor encoder interfaces and differential protection, where timing skew would introduce measurement error. The ADS7254IPW outputs data via separate SDO_A and SDO_B pins to preserve channel independence.

What package options are available for the ADS7254IPW?

ADS7254IPW is offered exclusively in the TSSOP-16 package (5.00 mm × 4.40 mm body, 0.65-mm lead pitch), with no exposed thermal pad. This RoHS-compliant package is compatible with standard surface-mount assembly processes and provides mechanical robustness for industrial environments. While the ADSxx54 family also includes WQFN-16 variants (e.g., ADS7254IRTER), the 'PW' suffix in ADS7254IPW explicitly denotes the TSSOP-16 option.

Is the ADS7254IPW pin-compatible with other devices in the ADSxx54 family?

Yes, the ADS7254IPW is fully pin-compatible and register-compatible with the ADS7854IPW (14-bit) and ADS8354IPW (16-bit) in both TSSOP-16 and WQFN-16 packages. All share identical pin functions, power sequencing, reference architecture, and SPI interface timing - enabling hardware reuse and firmware scalability across resolution grades. This allows designers to prototype with ADS7254IPW and upgrade to higher-resolution variants without PCB redesign.