Texas Instruments ADS8354IPW

Overview

ADS8354IPW from Texas Instruments is a 16-bit, dual-channel, simultaneous-sampling analog-to-digital converter (ADC) with fully differential inputs, 700 kSPS throughput, ±2.5-LSB max INL, and 93-dB SNR at 20 kHz. It operates over –40°C to 125°C and supports internal 2.5-V reference or external reference up to 5 V, enabling precision motor position sensing in industrial servo drives.

For engineers reviewing the ADS8354IPW datasheet, ADS8354IPW pinout, ADS8354IPW application, or ADS8354IPW equivalent, this page delivers verified electrical specs, TSSOP-16 package details, dual ADC timing isolation (–110 dB), and real-world use cases in three-phase power control and protection relay systems.

Technical Context

The ADS8354IPW integrates two independent 16-bit SAR ADCs sharing a common serial interface, each with programmable reference buffers and dedicated REFGND/REFIO pins for channel-specific reference decoupling. Its simultaneous sampling architecture eliminates inter-channel phase skew, critical for vector-controlled motor drives.

It supports 16- and 32-clock interface modes, configurable via SPI-compatible serial protocol, with aperture jitter of 50 ps and aperture delay matching of 40 ps between channels. Power management includes STANDBY (2.5 mA) and SPD (10–50 µA) low-power modes, optimized for real-time control loop timing budgets.

Key Specifications

Pinout & Package

TSSOP-16 (5.00 mm × 4.40 mm) package with exposed thermal pad (not electrically connected); pin-compatible with ADS7854IPW and ADS7254IPW.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7854IPW, the ADS8354IPW trades 300 kSPS speed for +15 dB SNR and ±1 LSB tighter INL-critical for metrology-grade power analyzers. Versus ADS8353IPW, it adds true simultaneous sampling and fully differential inputs, eliminating external instrumentation amplifiers in motor control front-ends.

Availability

ADS8354IPW is available at Aetrix Electronics and suitable for motor control systems, protection relays, and optical network equipment requiring stable component supply, long-term industrial lifecycle support, and guaranteed TSSOP-16 packaging consistency.

Supply support for ADS8354IPW 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 ADS8354IPW-is designed specifically for high-fidelity, real-time acquisition in demanding industrial automation, energy infrastructure, and motion control applications where channel simultaneity and DC/AC accuracy are non-negotiable.

FAQ

What is the maximum input frequency supported by ADS8354IPW while maintaining 93-dB SNR?

The ADS8354IPW achieves 93-dB SNR at 20 kHz input frequency with 2.5-V reference and ±VREF input range. At 250 kHz, SNR drops to 82.2 dB due to aperture jitter and thermal noise contributions. For >100 kHz signal fidelity, use ±2×VREF mode with external 5-V reference to extend full-scale bandwidth while preserving dynamic range.

Does ADS8354IPW support independent reference voltages for each channel?

Yes, ADS8354IPW provides separate REFIO_A/REFGND_A and REFIO_B/REFGND_B pins. Each channel can use its own internal 2.5-V reference or an external reference, enabling independent scaling-for example, 2.5 V for current sensing and 5 V for bus voltage monitoring-without shared reference crosstalk.

Can ADS8354IPW operate with AVDD = 3.3 V?

No. ADS8354IPW requires AVDD = 4.5–5.5 V for internal reference operation and ±2×VREF mode. With external reference, AVDD must be ≥2×VREF (e.g., 5 V for 2.5-V reference). DVDD supports 1.65–5.5 V, allowing 3.3-V digital interfacing while AVDD remains at 5 V.

How does ADS8354IPW handle simultaneous sampling in SPI readout?

ADS8354IPW uses dual SDO lines (SDO_A and SDO_B) to output conversion results independently. After a simultaneous sample event, both channels' data are available on their respective SDO pins within one SCLK cycle-enabling true parallel readout without time interleaving or added latency between channels.

Is the thermal pad on ADS8354IPW electrically connected?

No. The exposed thermal pad on the TSSOP-16 package of ADS8354IPW is not electrically connected to any internal node. Texas Instruments recommends soldering it to PCB ground plane solely for thermal dissipation-no electrical tie to AVDD, DVDD, or GND is required or recommended.