Texas Instruments ADS8382IBRHPR

Overview

ADS8382IBRHPR from Texas Instruments is an 18-bit, 600-kHz fully differential pseudo-bipolar input SAR analog-to-digital converter with integrated 4.096-V reference, onboard reference buffer, and high-speed serial interface (up to 40 MHz). It delivers ±1.25 LSB typical INL, 96 dB SINAD at 1 kHz, and zero-latency operation for precision data acquisition in medical instruments and optical networking systems.

For engineers reviewing the ADS8382IBRHPR datasheet, ADS8382IBRHPR pinout, ADS8382IBRHPR application, or ADS8382IBRHPR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply support for industrial embedded and high-accuracy measurement designs.

Technical Context

The ADS8382IBRHPR implements a capacitor-based successive approximation register (SAR) architecture with inherent sample-and-hold, supporting fully differential pseudo-bipolar inputs up to ±4.2 V. Its conversion control logic synchronizes CONVST_QUAL (CS-qualified CONVST) with BUSY status and supports back-to-back sampling for maximum throughput.

It integrates a trimmed 4.096-V internal reference with 25 ppm/°C drift and 10 µA source capability, and features three power states: full operation (115 mW), nap mode (15 mW), and power-down (10 µW). Digital I/O operates from +VBD = 2.7–5.25 V with CMOS-level compatibility and 10-pF load drive.

Key Specifications

Pinout & Package

ADS8382IBRHPR is housed in a 28-pin 6 × 6 mm QFN package (RHP designation) with exposed thermal pad. Analog and digital grounds are segregated (AGND ×7, BDGND ×1), and power supplies are split (+VA ×5, +VBD ×1) to minimize noise coupling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-resolution SAR ADC applications.

Compared with ADS8382IBRHPR, ADS8381IPWR trades integrated reference for resolution retention and reference flexibility, while ADS8371IPWR sacrifices 2 bits of resolution and 4 dB SINAD for reduced cost and power - making ADS8382IBRHPR optimal for new designs demanding verified 18-bit linearity and self-contained reference accuracy.

Availability

ADS8382IBRHPR is available at Aetrix Electronics and suitable for medical instrumentation, optical networking monitoring, and high-accuracy data acquisition systems requiring stable component supply across extended product lifecycles.

Supply support for ADS8382IBRHPR 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 ADS8382IBRHPR belongs to TI's high-speed SAR ADC family designed for applications demanding both speed and DC precision - including test equipment, scientific instrumentation, and advanced sensor interfaces where 18-bit resolution and low distortion are non-negotiable.

FAQ

What is the guaranteed resolution and linearity performance of the ADS8382IBRHPR over temperature?

The ADS8382IBRHPR guarantees 18-bit no-missing-codes (NMC) performance across the full industrial temperature range of –40°C to +85°C. Its integral nonlinearity (INL) is specified at ±3 LSB maximum and ±1.25 LSB typical, ensuring consistent high-fidelity digitization without code gaps or major transitions under thermal stress - a critical requirement for calibration-critical systems using the ADS8382IBRHPR.

Does the ADS8382IBRHPR require an external reference, or does it include one?

The ADS8382IBRHPR integrates a factory-trimmed 4.096-V internal voltage reference with 25 ppm/°C drift and 10 µA source capability. REFOUT delivers this reference, and REFIN can accept external references from 2.5 V to 4.2 V. When using the internal reference, REFIN must be shorted to REFOUT - eliminating external reference components for most ADS8382IBRHPR implementations.

How does the ADS8382IBRHPR manage power in low-duty-cycle applications?

The ADS8382IBRHPR supports three distinct power states: full operation (115 mW at 600 kHz), nap mode (15 mW with 300 ns wake-up), and power-down (10 µW). Nap mode is entered automatically when CONVST_QUAL is low at conversion end, enabling rapid resumption without reference settling delay - making it ideal for burst-mode sensing where the ADS8382IBRHPR balances responsiveness and efficiency.

What serial interface protocol does the ADS8382IBRHPR use, and what are its timing limits?

The ADS8382IBRHPR uses a CMOS-compatible SPI interface with frame sync (FS) and chip select (CS) control. It supports SCLK frequencies up to 40 MHz, with defined setup/hold times (e.g., tsu5 = 10 ns, th5 = 3 ns) and quiet zones (tquiet1–tquiet3) to maintain AC performance. The ADS8382IBRHPR outputs MSB-first 2's complement data on SDO, with BUSY indicating conversion status - enabling deterministic, high-throughput communication.

Can the ADS8382IBRHPR perform back-to-back conversions without software intervention?

Yes - the ADS8382IBRHPR supports hardware-triggered back-to-back conversions. By holding CS low after BUSY falls, the device automatically begins the next acquisition cycle without CPU involvement. This feature, combined with the 1.16 µs conversion time and zero-latency output, allows the ADS8382IBRHPR to sustain its full 600-kHz throughput in continuous streaming applications with minimal firmware overhead.