Analog Devices Inc./Maxim Integrated MAX11617DB+

Overview

The MAX11617DB+ from Maxim Integrated is a 12-bit, 12-channel I²C-compatible analog-to-digital converter with internal track/hold, 2.048V reference, and ultra-low power consumption (670µA at 94.4ksps). It operates from a single 2.7V–3.6V supply, supports software-configurable unipolar/bipolar and single-ended/differential inputs, and targets precision sensing in space-constrained battery-powered systems.

For engineers reviewing the MAX11617DB+ datasheet, MAX11617DB+ pinout, MAX11617DB+ application, or MAX11617DB+ equivalent, key selection criteria include its 12-channel count, I²C high-speed mode (1.7MHz), internal 2.048V reference, -40°C to +85°C operation, and QSOP-16 package compatibility for industrial sensor nodes and portable medical instrumentation.

Technical Context

The MAX11617DB+ uses successive-approximation architecture with fully differential track/hold circuitry and a switched-capacitor DAC. Its analog input multiplexer supports 12 single-ended or 6 fully differential channels, with acquisition time dependent on source impedance and clock mode (t_ACQ = 2/f_SCL in external clock mode).

It implements a two-wire I²C interface compliant with Fast Mode (400kHz) and High-Speed Mode (1.7MHz), featuring programmable slave address (0110101), acknowledge-based data transfer, and internal clock generation. The device includes an internal FIFO and channel-scan mode for automated multi-channel sequencing without host intervention.

Key Specifications

Pinout & Package

The MAX11617DB+ is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for automated assembly and thermal performance in dense PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit, multi-channel, I²C ADC applications.

Compared with ADS7953IRHBT and AD7091R-8BCPZ, the MAX11617DB+ uniquely balances 12-channel count, I²C compatibility, integrated 2.048V reference, and ultra-low quiescent current-making it optimal for space- and power-constrained sensor hubs where bus simplicity and long battery life are primary constraints.

Availability

The MAX11617DB+ is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered test equipment, and solar-powered remote monitoring requiring stable component supply and guaranteed long-term availability.

Supply support for MAX11617DB+ 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

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.

The MAX11612–MAX11617 family was engineered for ultra-low-power, multi-channel data acquisition in size- and energy-constrained systems-emphasizing integration (internal T/H, reference, clock), I²C efficiency, and extended temperature reliability.

FAQ

What is the maximum sampling rate of the MAX11617DB+ and under what conditions is it achieved?

The MAX11617DB+ achieves a maximum sampling rate of 94.4ksps when using the external clock mode with I²C High-Speed Mode (1.7MHz SCL) and internal reference enabled. This rate assumes continuous conversion with no gaps and accounts for internal track/hold acquisition time and 12-clock-cycle conversion latency. At this rate, typical supply current is 670µA from a 3.3V supply.

Does the MAX11617DB+ support differential input configurations, and how many differential channels are available?

Yes, the MAX11617DB+ supports fully differential input operation. When configured in differential mode, it provides 6 independent differential input pairs (AIN0–AIN1, AIN2–AIN3, ..., AIN10–AIN11), each with software-selectable unipolar or bipolar range. The differential configuration is set via the SGL/DIF bit in the configuration byte, and the BIP/UNI bit determines polarity mapping.

What is the function of the AIN3/REF and AIN11/REF pins on the MAX11617DB+?

On the MAX11617DB+, pin 4 (labeled AIN3/REF) and pin 1 (labeled AIN11/REF) serve dual roles: they can function either as analog input channels (AIN3 or AIN11) or as reference input/output terminals. Their mode is selected by the SEL[2:1] bits in the setup register. When configured as REF, they provide access to the internal 2.048V reference or accept an external reference voltage from 1V to VDD.

How does AutoShutdown™ operate in the MAX11617DB+, and what is its impact on power consumption?

AutoShutdown™ automatically powers down the MAX11617DB+ between conversions when no new command is received. In this state, supply current drops below 1µA - a reduction of over 600× compared to active 94.4ksps operation. This feature eliminates the need for external enable control and is especially valuable in duty-cycled sensor systems where measurements occur infrequently but must resume rapidly upon wake-up.

Is the MAX11617DB+ compatible with standard I²C bus timing specifications, and which modes does it support?

Yes, the MAX11617DB+ fully complies with standard I²C timing: it supports Fast Mode (400kHz, t_LOW ≥1.3µs) and High-Speed Mode (1.7MHz, t_LOW ≥320ns). It uses standard START/STOP/ACK protocols and accepts standard 7-bit slave addresses (factory-set to 0110101). Pull-up resistors ≥750Ω are required on SDA/SCL lines per I²C specification.