Analog Devices Inc./Maxim Integrated MAX11608EEE+

Overview

MAX11608EEE+ from Maxim Integrated is a low-power, 10-bit, 8-channel I²C-compatible analog-to-digital converter with internal track/hold, 4.096V reference, and single-supply operation from 4.5V to 5.5V. It delivers 94.4ksps throughput at 670µA, supports unipolar/bipolar and single-ended/differential inputs, and targets battery-powered sensor monitoring in portable instrumentation.

For engineers reviewing the MAX11608EEE+ datasheet, MAX11608EEE+ pinout, MAX11608EEE+ application, or MAX11608EEE+ equivalent, this page provides verified specifications, package-confirmed pin functions, real-world use scenarios, and two validated alternative parts for system-level design trade-offs.

Technical Context

The MAX11608EEE+ employs successive-approximation architecture with fully differential track-and-hold circuitry and an integrated 4.096V voltage reference. Its I²C interface operates in Fast Mode (400kHz) or High-Speed Mode (1.7MHz), enabling up to 94.4ksps conversion rate with external clocking.

It features software-configurable input modes (single-ended or differential), channel-scan FIFO, AutoShutdown™ reducing current to <1µA at low throughput, and analog input protection clamping to GND and VDD. Input bandwidth is 5.0MHz (–3dB), supporting undersampling of transient signals.

Key Specifications

Pinout & Package

MAX11608EEE+ is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.

Compared with ADS7822U and MAX11609EEE+, the MAX11608EEE+ uniquely combines 5V operation, integrated 4.096V reference, and I²C interface in a single 16-pin QSOP - making it optimal for cost-sensitive, space-constrained 5V embedded systems requiring rapid integration and minimal external components.

Availability

MAX11608EEE+ is available at Aetrix Electronics and suitable for portable medical sensors, battery management systems, and industrial process controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX11608EEE+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX11606–MAX11611 product line was designed for ultra-low-power, multichannel data acquisition in space- and energy-constrained systems - emphasizing integration (reference, T/H, clock), flexible I²C interfacing, and extended temperature reliability.

FAQ

What is the maximum sampling rate achievable with MAX11608EEE+?

The MAX11608EEE+ achieves a maximum throughput rate of 94.4ksps when operated in High-Speed I²C Mode (1.7MHz SCL) with external clocking. This requires proper bus capacitance control (≤400pF) and appropriate pull-up resistor selection. At lower rates (e.g., 40ksps), supply current drops to 230µA, and at 1ksps, it falls to just 6µA - enabling adaptive power management in duty-cycled systems using the MAX11608EEE+.

Does MAX11608EEE+ support differential input measurements?

Yes, the MAX11608EEE+ supports fully differential input operation across four independent channel pairs (AIN0–AIN1, AIN2–AIN3, AIN4–AIN5, AIN6–AIN7), selectable via the SGL/DIF bit in the configuration byte. In differential mode, it delivers true common-mode rejection and supports bipolar input ranges (±VREF/2) when the BIP/UNI bit is set - making the MAX11608EEE+ suitable for precision current sensing and bridge-based transducer interfaces.

Can MAX11608EEE+ operate with an external reference voltage?

Yes, the MAX11608EEE+ accepts an external reference voltage applied to the REF/AIN11/REF pin, ranging from 1V to VDD (4.5–5.5V). When using an external reference, the internal 4.096V reference is disabled. This allows scaling the full-scale range to match specific sensor output spans - for example, a 2.5V reference yields 2.44mV/LSB resolution. The MAX11608EEE+ maintains its specified DC accuracy (±1 LSB INL/DNL) across the supported external reference range.

What is the function of the N.C. pins on MAX11608EEE+?

Pins 14, 15, and 16 of the MAX11608EEE+ are designated N.C. (No Connection) - they are not internally bonded and serve no electrical function. These pins must remain unconnected on the PCB layout. Routing traces or placing vias under or adjacent to these pins is permissible, but soldering or tying them to any net (including GND or VDD) may cause unpredictable behavior or damage. This mechanical pin assignment is consistent across the MAX11608EEE+'s 16-pin QSOP package.

How does AutoShutdown™ work in MAX11608EEE+?

AutoShutdown™ in the MAX11608EEE+ automatically powers down the analog core, reference, and internal clock between conversion cycles when no I²C activity is detected. This reduces quiescent supply current to less than 1µA - critical for battery longevity in infrequently sampled applications. The MAX11608EEE+ wakes instantly upon receiving a valid I²C START condition and address byte, with no additional initialization delay. This feature is always active and requires no register configuration.