Analog Devices Inc./Maxim Integrated MAX11619EEE+T

Overview

MAX11619EEE+T from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated 2.5V reference, 4-channel single-ended analog input, on-chip FIFO, and SPI/QSPI/MICROWIRE-compatible interface. It operates from a 2.7V–3.6V supply, features ±1 LSB INL/DNL accuracy, and supports system supervision and patient monitoring applications requiring low-power, high-accuracy data acquisition.

For engineers reviewing the MAX11619EEE+T datasheet, MAX11619EEE+T pinout, MAX11619EEE+T application, or MAX11619EEE+T equivalent, this page delivers verified specifications, package mapping, real-world use scenarios, and validated alternative parts for embedded industrial and medical sensor interfaces.

Technical Context

The MAX11619EEE+T implements a successive-approximation register (SAR) architecture with integrated track-and-hold, supporting unipolar 0–2.5V input range referenced to GND. Its internal 4.4MHz oscillator enables autonomous conversions in clock modes 00/01/10, while clock mode 11 supports externally timed sampling up to 300ksps using SCLK ≤ 4.8MHz.

It integrates a 16-entry FIFO buffer that stores full 10-bit results (2-byte format), allowing burst acquisition without serial bus contention. The device uses a single-ended input structure with 24pF input capacitance and supports source impedances up to 300Ω without performance degradation under standard acquisition timing.

Key Specifications

Pinout & Package

MAX11619EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for space-constrained PCB layouts in portable instrumentation and embedded controllers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and AD7476ARTZ-REEL7, the MAX11619EEE+T uniquely combines 10-bit accuracy, integrated FIFO, internal reference, and 4-channel scan capability in a single 16-pin QSOP - reducing firmware overhead and component count for mid-tier industrial and medical data acquisition.

Availability

MAX11619EEE+T is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, environmental data logging, and embedded power supply supervision requiring stable component supply and extended temperature operation.

Supply support for MAX11619EEE+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, emphasizing integration, low power, and reliability.

The MAX11619EEE+T belongs to the MAX11618–MAX11625 family of low-power, multichannel SAR ADCs engineered for system-level monitoring where autonomous operation, small footprint, and guaranteed monotonicity are essential.

FAQ

What is the maximum sampling rate supported by the MAX11619EEE+T?

The MAX11619EEE+T supports a maximum sampling rate of 300ksps when using an external clock in clock mode 11. This requires SCLK ≤ 4.8MHz with 50% duty cycle. In internal clock modes (00/01/10), the effective sampling rate is lower due to oscillator tolerance and overhead, typically ~270ksps under nominal conditions. The MAX11619EEE+T achieves this rate while maintaining ±1 LSB INL across the full -40°C to +85°C range.

Does the MAX11619EEE+T require an external reference voltage?

No, the MAX11619EEE+T does not require an external reference voltage because it integrates a precision 2.5V internal reference with ±30ppm/°C temperature coefficient. The REF pin is an output, not an input, and must be bypassed with a 0.1µF capacitor to GND. External reference operation is not supported for the MAX11619EEE+T - unlike some variants in the family (e.g., MAX11618), its internal reference is fixed and non-overrideable.

How many analog input channels does the MAX11619EEE+T have, and what type are they?

The MAX11619EEE+T has four single-ended analog input channels: AIN0 through AIN3. These are unipolar inputs referenced to GND, accepting signals from 0V to the internal 2.5V reference voltage. No differential or pseudo-differential modes are supported. Pins 5–7 are no-connect (N.C.) and must remain unconnected. Channel selection is controlled via the setup register, and scan mode allows automatic sequencing across all four channels without µP intervention.

What package type and pin count does the MAX11619EEE+T use?

The MAX11619EEE+T uses a 16-pin QSOP (Quarter-Size Outline Package) with 0.65mm lead pitch and dimensions of 5.3mm × 10.2mm. This RoHS-compliant, lead-free package is surface-mountable and thermally rated for θJA = 105°C/W. Pinout is identical to other 4-channel variants in the family (MAX11618), enabling layout reuse across voltage-range variants. The package supports reflow soldering at peak temperatures up to +260°C.

Can the MAX11619EEE+T operate autonomously without continuous microcontroller interaction?

Yes, the MAX11619EEE+T can operate autonomously using its internal 4.4MHz oscillator and on-chip 16-entry FIFO. In clock mode 00 or 01, it performs internally timed conversions triggered by CNVST or internal scan logic, storing results in FIFO until read via SPI. This eliminates the need for constant µP polling - ideal for low-duty-cycle applications like battery-powered data loggers where the MAX11619EEE+T handles acquisition while the host processor remains in sleep mode.