Analog Devices Inc./Maxim Integrated MAX11626EEE+T

Overview

MAX11626EEE+T from Maxim Integrated is a 12-bit, 300ksps serial-output SAR ADC with integrated 4.096V reference, 4-channel single-ended analog input, and 16-entry FIFO. It operates from +4.75V to +5.25V, supports SPI/QSPI/MICROWIRE interfaces, and targets precision system supervision and industrial data acquisition where low power and internal timing autonomy are critical.

For engineers reviewing the MAX11626EEE+T datasheet, MAX11626EEE+T pinout, MAX11626EEE+T application, or MAX11626EEE+T equivalent, this page delivers verified electrical specs, QSOP-16 pin mapping, real-world use cases in patient monitoring and instrumentation, and two validated alternative parts with documented functional trade-offs.

Technical Context

The MAX11626EEE+T implements a successive-approximation register (SAR) architecture with on-chip track-and-hold, supporting unipolar 0–VREF input range. Its internal 4.096V reference exhibits ±20ppm/°C drift and 200µVRMS noise, enabling stable 12-bit conversions without external reference components.

It features four clock modes selectable via CKSEL bits: mode 11 enables externally clocked 300ksps sampling at up to 4.8MHz SCLK; modes 00/01/10 activate the internal 4.4MHz oscillator for autonomous scan/averaging/FIFO operations without CPU intervention.

Key Specifications

Pinout & Package

MAX11626EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for space-constrained industrial PCBs and compatible with automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit SAR ADC applications.

Compared with ADS7953IRHBT and AD7476AARMZ, the MAX11626EEE+T uniquely integrates 4.096V reference, 4-channel mux, 16-entry FIFO, and internal clock - delivering complete signal-chain autonomy in a compact QSOP-16 package for embedded system supervision.

Availability

MAX11626EEE+T is available at Aetrix Electronics and suitable for industrial control systems, patient monitoring devices, and portable data-acquisition systems requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.

Supply support for MAX11626EEE+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 and mixed-signal ICs for industrial, medical, and communications applications.

The MAX11626EEE+T belongs to the MAX116xx family of low-power, multichannel SAR ADCs engineered for system-level monitoring where integration of reference, FIFO, and autonomous timing reduces design complexity and board space.

FAQ

What is the maximum sampling rate of the MAX11626EEE+T?

The MAX11626EEE+T achieves a maximum sampling rate of 300ksps when using an external clock in clock mode 11 (CKSEL = 11). This requires SCLK up to 4.8MHz with 40–60% duty cycle. Internally clocked modes support lower rates due to the ±10% tolerance of the 4.4MHz oscillator, making external timing essential for deterministic high-speed acquisition.

Does the MAX11626EEE+T require an external reference voltage?

No, the MAX11626EEE+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. The REF pin outputs this voltage and must be bypassed with a 0.1µF capacitor to GND. An external reference between 1V and VDD can be used instead, but doing so disables the internal reference and forfeits its stability benefits.

How many analog input channels does the MAX11626EEE+T support?

The MAX11626EEE+T supports exactly 4 single-ended analog input channels: AIN0 through AIN3. Pins AIN4–AIN7 and AIN8–AIN15 are not connected (N.C.) on this variant, as confirmed by the ordering table and pin description. This 4-channel configuration distinguishes it from the 8-channel MAX11628/MAX11629 and 16-channel MAX11632/MAX11633 variants in the same family.

What package type is used for the MAX11626EEE+T?

The MAX11626EEE+T is packaged in a 16-pin QSOP (Quarter-Size Outline Package) with 0.65mm lead pitch and dimensions of 5.3mm × 10.2mm. This RoHS-compliant, surface-mount package supports automated assembly and provides thermal performance rated at 667mW at +70°C, with derating above that temperature. The "+T" suffix confirms tape-and-reel packaging for production use.

Can the MAX11626EEE+T operate from a 3.3V supply?

No, the MAX11626EEE+T cannot operate from a 3.3V supply. Its specified supply voltage range is strictly +4.75V to +5.25V, as stated in the Ordering Information table and Electrical Characteristics section. Using 3.3V would violate absolute maximum ratings and prevent proper operation of the internal 4.096V reference and digital interface. For 2.7–3.6V operation, the pin-compatible MAX11627EEE+T (same 4-channel count, 2.5V reference) must be selected instead.