Texas Instruments ADS8350IRTET

Overview

ADS8350IRTET from Texas Instruments is a dual, 16-bit, simultaneous-sampling analog-to-digital converter with pseudo-differential inputs, 750-kSPS throughput, ±2.5 LSB max INL, and 85-dB SNR. It operates over –40°C to 125°C and is used in motor control position measurement with SinCos encoders.

For engineers reviewing the ADS8350IRTET datasheet, ADS8350IRTET pinout, ADS8350IRTET application, or ADS8350IRTET equivalent, this page delivers verified electrical specs, WQFN-16 package details, dual-channel timing alignment (40-ps match), and real-world implementation context for industrial automation and power quality systems.

Technical Context

The ADS8350IRTET integrates two independent 16-bit SAR ADCs sharing a common serial interface, enabling true simultaneous sampling of two analog channels. Its pseudo-differential architecture accepts AINP/AINM pairs referenced to dedicated REFGND pins per channel.

It uses a simple SPI-compatible 3-wire interface (CS, SCLK, dual SDO) with deterministic timing: 590-ns conversion time, 1.33-µs throughput period, and 24-MHz max clock. Reference inputs (REFIN-A/B) support external 2.25–2.5-V references with 300-µA input current.

Key Specifications

Pinout & Package

ADS8350IRTET is housed in a 3 mm × 3 mm WQFN-16 package with exposed thermal pad. The package supports high-density PCB layouts and efficient heat dissipation via thermal pad grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7850IRTET, the ADS8350IRTET delivers 2 extra bits of resolution and 4-dB SNR improvement-critical for harmonic analysis below –90 dBc. Versus AD7606C-16BSTZ, it offers tighter dual-channel timing alignment and lower power, but fewer total channels.

Availability

ADS8350IRTET is available at Aetrix Electronics and suitable for motor control position measurement, three-phase power quality monitoring, and protection relay signal acquisition requiring stable component supply across extended temperature environments.

Supply support for ADS8350IRTET 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 company delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The ADSxx50 family-including ADS8350IRTET-is designed for high-fidelity, simultaneous dual-channel data acquisition in harsh industrial environments where timing coherence and DC accuracy are non-negotiable.

FAQ

What is the maximum clock frequency supported by the ADS8350IRTET?

The ADS8350IRTET supports a maximum SCLK frequency of 24 MHz, enabling its full 750-kSPS throughput capability. This timing is validated across the full –40°C to 125°C operating range and aligns with tD_CKDO (3–20 ns) and tCONV (590 ns) specifications. Operating above 24 MHz may violate setup/hold margins and compromise data validity in the ADS8350IRTET.

Does the ADS8350IRTET require an external voltage reference?

Yes, the ADS8350IRTET requires external reference voltages applied to REFIN-A and REFIN-B pins. It accepts 2.25–2.5 V with 300-µA input current per channel; AVDD must be ≥2×VREF. No internal reference is provided, so precision external sources (e.g., REF5025) are mandatory for specified INL and SNR performance in the ADS8350IRTET.

How are the two ADC channels synchronized in the ADS8350IRTET?

The ADS8350IRTET guarantees true simultaneous sampling via internally aligned sample-and-hold circuits. Aperture delay match between ADC_A and ADC_B is specified at 40 ps maximum over temperature, ensuring phase-coherent acquisition critical for vector math in motor control and power quality applications using the ADS8350IRTET.

What is the purpose of separate REFGND-A and REFGND-B pins on the ADS8350IRTET?

REFGND-A and REFGND-B provide isolated ground returns for each ADC's reference and analog input circuitry. This separation prevents crosstalk-induced errors and maintains CMRR ≥74 dB across both channels. Routing these pins to a clean, low-impedance ground node-distinct from digital GND-is essential to achieve datasheet AC/DC performance in the ADS8350IRTET.

Can the ADS8350IRTET operate with different analog and digital supply voltages?

Yes, the ADS8350IRTET supports independent AVDD (4.5–5.5 V) and DVDD (1.65–5.5 V) supplies. This allows interfacing with 1.8-V or 3.3-V microcontrollers while maintaining optimal analog performance at 5-V AVDD. Proper decoupling (e.g., 100-nF ceramic + 10-µF tantalum per supply) is required to prevent noise coupling in the ADS8350IRTET.