Analog Devices Inc./Maxim Integrated MAX11339ATJ+

Overview

MAX11339ATJ+ from Analog Devices is a 10-bit, 8-channel SAR analog-to-digital converter with external differential reference support, 500ksps conversion rate, ±0.4 LSB INL, 61.5dB SINAD at 100kHz, and operation from 2.35V to 3.6V supply - designed for high-speed industrial control and battery-powered instrumentation requiring post-mux signal conditioning access.

For engineers reviewing the MAX11339ATJ+ datasheet, MAX11339ATJ+ pinout, MAX11339ATJ+ application, or MAX11339ATJ+ equivalent, this page delivers verified specifications, real-world interface timing, SampleSet™ sequencer configuration details, and validated alternative options for multichannel data acquisition systems.

Technical Context

The MAX11339ATJ+ implements a successive approximation register (SAR) architecture with full-linear bandwidth of 0.5MHz (SINAD ≥ 61dB), aperture jitter of 30ps RMS, and supports both internal clock mode (with FIFO and averaging) and external clock mode (with SampleSet™ programmable channel sequencing). It features true differential track/hold with configurable input types: single-ended, fully differential, or pseudo-differential relative to a common input.

Its analog front-end provides externally accessible multiplexer outputs (AOP/AON) and ADC inputs (AIP/AIN), enabling external signal conditioning between stages. The device uses a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface operating up to 8MHz with CPOL=CPHA=1, and includes AutoShutdown™ with 2μA full-shutdown current.

Key Specifications

Pinout & Package

MAX11339ATJ+ is housed in a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP), rated for -40°C to +125°C operation. Pin functions are validated per Analog Devices' official pin configuration diagram for MAX11339 (8-channel variant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multichannel SAR ADC applications.

Compared with ADS8684IPWR and AD7928BRUZ, the MAX11339ATJ+ uniquely combines 8-channel flexibility, post-mux signal access, SampleSet™ sequencing, and sub-5mW power - making it optimal for space-constrained, battery-aware industrial IoT nodes where signal conditioning adaptability matters more than raw bit depth or speed.

Availability

MAX11339ATJ+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical sensors, and high-speed closed-loop control systems requiring stable component supply, extended temperature operation, and long-term production continuity.

Supply support for MAX11339ATJ+ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX11335–MAX11340 product line was engineered for low-power, multichannel data acquisition in harsh environments - emphasizing configurability (input modes, sequencing), signal integrity (post-mux access), and energy efficiency (AutoShutdown™, 4.2mW operation).

FAQ

What is the maximum sampling rate supported by MAX11339ATJ+?

The MAX11339ATJ+ supports a maximum conversion rate of 500ksps in both internal and external clock modes. At this rate, the device achieves 61.5dB SINAD at 100kHz input frequency and consumes 4.2mW from a 3V supply. Conversion time is 2000ns in externally clocked mode with 8MHz SCLK, or 5.9µs in internally clocked mode - enabling deterministic timing for real-time control loops.

Does MAX11339ATJ+ support differential input configurations?

Yes, MAX11339ATJ+ supports fully differential, pseudo-differential, and single-ended input configurations. As an 8-channel device, it can be configured for four fully differential input pairs (e.g., AIN0/AIN1, AIN2/AIN3, etc.) with software-selectable bipolar ranges (±VREF+/2 or ±VREF+). The AOP/AON and AIP/AIN pins provide external access to mux output and ADC input, allowing external differential signal conditioning.

How does SampleSet™ technology improve system-level design with MAX11339ATJ+?

SampleSet™ technology in MAX11339ATJ+ allows users to define and load a custom 256-entry channel sequence into the ADC's sequencer. This eliminates continuous MCU polling, reduces serial interface traffic by up to 90%, and enables autonomous acquisition of mixed-frequency signals (e.g., slow temperature + fast vibration). The feature directly lowers system power and simplifies firmware for battery-powered condition-monitoring nodes.

What are the power supply requirements for MAX11339ATJ+?

MAX11339ATJ+ requires two independent supplies: VDD (2.35V to 3.6V) for the analog core and OVDD (1.5V to 3.6V) for digital I/O. DGND and analog GND pins must be tied to a common ground plane with low-impedance connection to the exposed pad (EP). Typical supply current is 1.4–2mA at 500ksps, dropping to 2μA in full shutdown - supporting ultra-low-power wake-on-event architectures.

Can MAX11339ATJ+ operate with an external reference voltage?

Yes, MAX11339ATJ+ accepts an external differential reference via REF+ (1V to VDD) and REF- (–0.3V to +1V) pins. This enables precise ratio-metric measurements with transducers and improves stability over temperature versus internal references. REF+ draws only 36.7µA at 500ksps, and the device maintains ±0.4 LSB INL and 61.5dB SINAD across the full –40°C to +125°C range when using a clean, low-noise external reference.