Analog Devices Inc./Maxim Integrated MAX11618EEE+T

Overview

MAX11618EEE+T from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated 4.096V internal reference, 4-channel single-ended analog input, and 16-entry FIFO buffer. It operates from a 4.75V–5.25V supply, features SPI/QSPI/MICROWIRE-compatible 3-wire interface, and supports scan mode, internal averaging, and AutoShutdown™ for low-power system monitoring in industrial control and data-acquisition applications.

For engineers reviewing the MAX11618EEE+T datasheet, MAX11618EEE+T pinout, MAX11618EEE+T application, or MAX11618EEE+T equivalent, key selection criteria include unipolar 0–VREF input range, ±1 LSB INL/DNL accuracy over –40°C to +85°C, 16-pin QSOP package compatibility, and support for externally clocked high-speed sampling up to 300ksps.

Technical Context

The MAX11618EEE+T employs a successive-approximation register (SAR) architecture with on-chip track-and-hold, enabling precise digitization of unipolar analog signals referenced to GND. Its internal 4.096V reference exhibits ±20ppm/°C temperature coefficient and 200µVRMS noise, ensuring stable full-scale calibration across temperature.

It supports four clock modes via CKSEL bits: mode 00 uses CNVST for internally timed conversions; mode 01 enables per-channel conversion start; mode 10 initiates conversions via serial write; mode 11 disables FIFO/averaging for externally clocked 300ksps operation with SCLK ≤ 4.8MHz.

Key Specifications

Pinout & Package

MAX11618EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for space-constrained industrial PCB layouts and compatible with standard reflow soldering profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11100ETE+, the MAX11618EEE+T uniquely balances 10-bit precision, 5V operation, integrated 4.096V reference, FIFO buffering, and AutoShutdown™-making it optimal for cost-sensitive, space-constrained 5V industrial data loggers requiring autonomous multi-channel acquisition.

Availability

MAX11618EEE+T is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, and battery-powered field instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX11618EEE+T 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 MAX116xx family was engineered specifically for low-power, multichannel data-acquisition systems requiring integrated reference, FIFO, and flexible timing control-targeting embedded monitoring and instrumentation where board space and power efficiency are critical.

FAQ

What is the maximum sampling rate achievable with the MAX11618EEE+T?

The MAX11618EEE+T achieves a maximum sampling rate of 300ksps when using an external clock (clock mode 11). This requires SCLK ≤ 4.8MHz with 50% duty cycle. Internally clocked operation supports lower rates-typically ~270ksps-due to oscillator tolerance. The 300ksps rate applies only when external timing is used and FIFO/averaging are disabled.

Does the MAX11618EEE+T require an external reference voltage?

No, the MAX11618EEE+T does not require an external reference voltage because it integrates a precision 4.096V internal reference with ±20ppm/°C temperature coefficient and 200µVRMS noise. However, it also supports external references from 1.0V to VDD applied at the REF pin, allowing system-level calibration or alternative full-scale ranges when needed.

How many analog input channels does the MAX11618EEE+T support?

The MAX11618EEE+T supports exactly 4 single-ended analog input channels (AIN0–AIN3), as confirmed in the Ordering Information table and Pin Description section. This distinguishes it from other members of the MAX116xx family (e.g., MAX11620 has 8 channels; MAX11624 has 16). All 4 channels are accessible on pins 1–4 of the 16-pin QSOP package.

What package type is used for the MAX11618EEE+T?

The MAX11618EEE+T is supplied in a 16-pin QSOP (Quarter-Size Outline Package) with 0.65mm lead pitch and dimensions of 5.3mm × 10.2mm. The "+T" suffix denotes tape-and-reel packaging for automated assembly, and the "E" grade confirms operation over the extended –40°C to +85°C temperature range.

Can the MAX11618EEE+T operate from a 3.3V supply?

No, the MAX11618EEE+T is specified only for 4.75V to 5.25V supply operation, as explicitly stated in the Ordering Information table and Electrical Characteristics section. For 2.7V–3.6V operation, the pin-compatible MAX11619EEE+T variant-identical in package and pinout but with 2.5V internal reference-is the designated option.