Analog Devices Inc./Maxim Integrated MAX11619EEE+

Overview

MAX11619EEE+ 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 16-entry FIFO, and SPI/QSPI/MICROWIRE-compatible 3-wire interface - designed for low-power system supervision and data-acquisition in industrial control and patient monitoring.

For engineers reviewing the MAX11619EEE+ datasheet, MAX11619EEE+ pinout, MAX11619EEE+ application, or MAX11619EEE+ equivalent, key selection criteria include its 2.7V–3.6V supply range, ±1 LSB INL/DNL accuracy over –40°C to +85°C, internal track-and-hold, scan mode support, and AutoShutdown™ for <5µA shutdown current.

Technical Context

The MAX11619EEE+ implements a successive-approximation register (SAR) ADC architecture with integrated track-and-hold, supporting unipolar 0–VREF input ranges. It operates in four configurable clock modes (CKSEL[1:0]), enabling flexible conversion triggering via CNVST pin, internal oscillator, or external SCLK up to 10MHz.

Its internal 2.5V reference (±30ppm/°C TC, 200µVRMS noise) eliminates external reference components, while the 16-deep FIFO buffers consecutive conversions without serial bus contention. Acquisition time is 0.6µs (typical), and full-power bandwidth is 1MHz.

Key Specifications

Pinout & Package

MAX11619EEE+ is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for space-constrained industrial PCBs and requiring only 0.1µF bypass capacitors on VDD and REF pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and AD7476ARTZ-REEL7, MAX11619EEE+ uniquely combines 10-bit precision, integrated 2.5V reference, 16-deep FIFO, and sub-5µA shutdown - making it optimal for battery-powered, multi-channel, autonomous data acquisition where BOM simplicity and deterministic timing are critical.

Availability

MAX11619EEE+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical instrumentation, and embedded system supervision requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.

Supply support for MAX11619EEE+ 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 demanding industrial, medical, and communications applications.

The MAX11618–MAX11625 family was engineered specifically for low-power, multichannel data acquisition in space- and energy-constrained systems - emphasizing integrated references, FIFO autonomy, and flexible clocking to reduce system-level complexity.

FAQ

What is the maximum sampling rate achievable with MAX11619EEE+?

The MAX11619EEE+ achieves a maximum sampling rate of 300ksps when using an external clock (SCLK) at up to 4.8MHz in clock mode 11. In internally clocked modes (00, 01, 10), the effective rate is lower due to oscillator tolerance and overhead; typical sustained throughput is ~200ksps with FIFO readout optimization. The MAX11619EEE+ datasheet specifies timing under fSCLK = 4.8MHz, 50% duty cycle conditions.

Does MAX11619EEE+ require an external reference voltage?

No, MAX11619EEE+ does not require an external reference voltage - it integrates a precision 2.5V internal reference with ±0.8% initial accuracy and ±30ppm/°C temperature coefficient. The REF pin is an output that must be bypassed to GND with a 0.1µF capacitor. An external reference (1V to VDD) may be used instead by connecting it to the REF pin and configuring the setup register accordingly.

How many analog input channels does MAX11619EEE+ support?

MAX11619EEE+ supports exactly 4 single-ended analog input channels (AIN0–AIN3), as confirmed by the ordering table and pin description. This distinguishes it from the 8-channel MAX11621EEE+ and 16-channel MAX11625EEG+. All four inputs are accessible on pins 1–4 of the 16-pin QSOP package and are multiplexed into the SAR core under software control.

What is the purpose of the EOC pin on MAX11619EEE+?

The EOC (End of Conversion) pin on MAX11619EEE+ is an active-low output that signals when conversion data is valid and ready to be read. In clock modes 00 and 10, EOC pulses low after the last requested conversion completes and remains low until CS goes low. In mode 01, it pulses low after each individual conversion. EOC is always high in mode 11 (externally clocked). This pin enables interrupt-driven data reads and eliminates need for polling in the MAX11619EEE+ interface.

Is MAX11619EEE+ compatible with standard SPI interfaces?

Yes, MAX11619EEE+ is fully compatible with standard SPI interfaces operating in master mode. It supports both CPOL = CPHA = 0 and CPOL = CPHA = 1 configurations, accepts SCLK up to 10MHz, and uses standard 3-wire signaling (CS, SCLK, DIN/DOUT). Data is clocked in on the rising edge of SCLK and out on the falling edge, with MSB-first 16-bit frames containing 10-bit results plus status bits - matching common SPI controller expectations for the MAX11619EEE+.