Analog Devices Inc./Maxim Integrated MAX11602EEE+

Overview

MAX11602EEE+ from Maxim Integrated is an 8-bit, 8-channel, low-power analog-to-digital converter with integrated track/hold, 4.096V internal reference, I²C-compatible 2-wire serial interface, and operation from 4.5V to 5.5V supply. It delivers 188ksps throughput with 350µA supply current and supports software-configurable unipolar/bipolar and single-ended/pseudo-differential input modes for precision sensor digitization in battery-constrained systems.

For engineers reviewing the MAX11602EEE+ datasheet, MAX11602EEE+ pinout, MAX11602EEE+ application, or MAX11602EEE+ equivalent, key selection considerations include its 16-pin QSOP package, ±1 LSB total unadjusted error, internal FIFO with channel-scan mode, 2MHz full-power analog bandwidth, and guaranteed operation across –40°C to +85°C industrial temperature range.

Technical Context

The MAX11602EEE+ employs successive-approximation architecture with integrated switched-capacitor DAC and track/hold circuitry. Its analog input multiplexer selects among eight single-ended or four pseudo-differential channels, with acquisition time dependent on source impedance and clock mode (internal or external).

It implements a high-speed I²C interface supporting Fast Mode (400kHz) and High-Speed Mode (1.7MHz), with configurable slave address and acknowledge-based transaction control. The device uses AutoShutdown™ to reduce supply current to <1µA between conversions, enabling ultra-low average power in intermittent sampling applications.

Key Specifications

Pinout & Package

MAX11602EEE+ is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for space-constrained PCB layouts while maintaining thermal and ESD robustness in industrial environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit multichannel ADC applications.

Compared with ADS7822U and MAX11603EEE+, the MAX11602EEE+ uniquely combines 5V operation, 4.096V reference, I²C compatibility, and autonomous scan mode-making it optimal for cost-sensitive, battery-aware 5V embedded systems requiring minimal external components.

Availability

MAX11602EEE+ is available at Aetrix Electronics and suitable for battery-powered test equipment, medical instrumentation, and solar-powered remote systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MAX11602EEE+ 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX11600–MAX11605 family targets ultra-low-power, multichannel data acquisition in space- and energy-constrained systems-emphasizing integration, ease of use, and guaranteed industrial temperature performance.

FAQ

What is the maximum sampling rate of the MAX11602EEE+ and under what conditions is it achieved?

The MAX11602EEE+ achieves a maximum sampling rate of 188ksps when using an external clock in High-Speed I²C mode (1.7MHz SCL) with internal reference enabled and VDD = 5V. This rate assumes continuous conversion without FIFO overflow and accounts for full 8-bit resolution and acquisition time. At lower clock frequencies or with internal clocking, throughput drops to 76ksps.

Does the MAX11602EEE+ support pseudo-differential input mode, and how is it configured?

Yes, the MAX11602EEE+ supports pseudo-differential input mode via the SGL/DIF bit in the configuration byte. When SGL/DIF = 0, the device samples the difference between a selected positive input (e.g., AIN0) and a fixed negative input (GND or AINx depending on setup). The negative input must remain stable within ±0.5 LSB during conversion, requiring local decoupling capacitance per the datasheet.

What is the function of the REF pin on the MAX11602EEE+ and how should it be connected?

The REF pin on the MAX11602EEE+ serves as the output for the internal 4.096V reference voltage. It must be decoupled to GND with a 0.01µF ceramic capacitor to ensure stability and low noise. This pin is not an input - external reference voltage cannot be applied here; the device uses a separate internal reference architecture distinct from MAX11601/MAX11603 variants.

How does AutoShutdown™ operate in the MAX11602EEE+, and what is its impact on power consumption?

AutoShutdown™ automatically powers down the MAX11602EEE+ core between conversions when no new command is received. In this state, supply current drops to <1µA. For example, at 10ksps throughput, average current is ~8µA; at 1ksps, it falls to ~2µA. This feature eliminates manual power gating and significantly extends battery life in intermittently active systems.

Can the MAX11602EEE+ interface directly with a 3.3V microcontroller I²C bus?

Yes, the MAX11602EEE+ supports I²C level translation: its SDA and SCL pins tolerate voltages up to VDD + 0.3V and have VIH = 0.7×VDD, VIL = 0.3×VDD. With VDD = 5V, it accepts 3.3V logic highs reliably. However, pull-up resistors must be tied to the MCU's 3.3V rail-not the ADC's 5V rail-to avoid bus contention and ensure proper ACK signaling.