Texas Instruments ADS8339IDGSR

Overview

ADS8339IDGSR from Texas Instruments is a 16-bit, 250-kSPS successive-approximation register (SAR) analog-to-digital converter with pseudo-differential input, ±2.0 LSB INL (max), 93.6 dB SNR (typ at 10 kHz), and SPI-compatible serial interface. It operates from 4.5 V to 5.5 V analog supply, uses an external reference (2.25 V to +VA + 0.1 V), and delivers zero-latency conversion for precision data acquisition in space-constrained systems.

For engineers reviewing the ADS8339IDGSR datasheet, ADS8339IDGSR pinout, ADS8339IDGSR application, or ADS8339IDGSR equivalent, this page provides verified technical context, validated pin functions, confirmed performance metrics across temperature and supply voltage, and real-world implementation guidance for battery-powered instrumentation and industrial sensing.

Technical Context

The ADS8339IDGSR implements a charge-redistribution SAR architecture with integrated sample-and-hold, enabling true zero-latency operation at full 250-kSPS throughput. Its pseudo-differential input stage accepts +IN (0 V to VREF + 0.1 V) and –IN (±0.1 V range, typically grounded), rejecting common-mode noise up to 78 dB.

Digital interface supports both 3-wire (CONVST as CS) and 4-wire (dedicated SDI/SDO) SPI modes with daisy-chain capability, synchronized by an internal clock-eliminating external timing dependencies. Power scales linearly with sampling rate: 17.5 mW at 250 kSPS, dropping to 1.75 mW at 25 kSPS, with 0.25 μW typical power-down current.

Key Specifications

Pinout & Package

VSSOP-10 package (3.00 mm × 3.00 mm), thermally enhanced for low-power precision ADC operation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Compared with ADS8339IDGSR, ADS8866IDGSR trades speed for lower power and supply voltage, while ADS8319IRHBT adds integration at the cost of package size and layout compatibility-neither is pin-compatible, requiring PCB redesign.

Availability

ADS8339IDGSR is available at Aetrix Electronics and suitable for battery-powered equipment, industrial process controls, medical electronics, and optical networking applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADS8339IDGSR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The ADS8339 belongs to TI's precision SAR ADC portfolio, engineered for high-resolution, low-power data acquisition in space- and energy-constrained systems where accuracy, repeatability, and thermal stability are critical.

FAQ

What is the maximum sampling rate supported by the ADS8339IDGSR?

The ADS8339IDGSR supports a maximum sampling rate of 250 kSPS, with guaranteed performance across the full operating temperature range (–40°C to +85°C). At this rate, conversion time is fixed at 3.3 μs due to its internal clock architecture, and acquisition time is 700 ns-enabling reliable real-time signal capture without pipeline latency. The ADS8339IDGSR maintains specified INL, SNR, and THD performance at full speed.

Does the ADS8339IDGSR require an external reference, and what voltage range is supported?

Yes, the ADS8339IDGSR requires an external reference applied to the REFIN pin. It supports a reference voltage range of 2.25 V to (+VA + 0.1 V), where +VA is the analog supply (4.5 V to 5.5 V). This allows use of common references such as 2.5 V, 4.096 V, or 5 V. Reference input current is 75 μA during conversion, and proper decoupling (0.1-μF + 10-μF) is mandatory for stable operation of the ADS8339IDGSR.

Can the ADS8339IDGSR operate with a 3.3-V digital supply while using a 5-V analog supply?

Yes, the ADS8339IDGSR supports independent analog (+VA) and digital I/O (+VBD) supplies. +VA may be 4.5–5.5 V while +VBD operates from 2.375 V to 5.5 V-including 3.3 V-enabling seamless interfacing with 3.3-V microcontrollers or FPGAs without level shifters. Logic thresholds scale with +VBD, and all timing parameters remain valid across this range, ensuring robust digital communication for the ADS8339IDGSR.

What is the input configuration of the ADS8339IDGSR, and how does it differ from fully differential inputs?

The ADS8339IDGSR features a pseudo-differential input: +IN accepts 0 V to VREF + 0.1 V, while –IN is limited to ±0.1 V (typically grounded). This configuration rejects common-mode noise up to 78 dB but does not support true differential signaling like ±VREF ranges. Unlike fully differential ADCs, the ADS8339IDGSR does not require matched input drivers or differential amplifiers-simplifying front-end design while retaining key noise-rejection benefits.

How does power consumption scale with sampling rate in the ADS8339IDGSR?

Power consumption in the ADS8339IDGSR scales linearly with sampling rate: 17.5 mW at 250 kSPS, 1.75 mW at 25 kSPS, and ~0.175 mW at 2.5 kSPS. This behavior stems from its architecture-power-down occurs automatically between conversions, and active current draw is proportional to conversion frequency. The ADS8339IDGSR's 0.25 μW typical power-down current further minimizes quiescent loss, making it ideal for duty-cycled sensor systems.