Analog Devices Inc./Maxim Integrated MAX40070ANA16+

Overview

MAX40070ANA16+ from Analog Devices is a single high-voltage, micropower comparator with rail-to-rail input (0V to +27.5V on IP), 16µA typical supply current, 2µs propagation delay, and open-drain output. It integrates a 1.6V precision reference and internal current source for configurable threshold/hysteresis, targeting space- and power-constrained battery-operated systems such as portable medical monitors and industrial sensor nodes.

For engineers reviewing the MAX40070ANA16+ datasheet, MAX40070ANA16+ pinout, MAX40070ANA16+ application, or MAX40070ANA16+ equivalent, key selection criteria include its extended -40°C to +125°C operation, 90mV internal hysteresis referred to IP, EN pin for shutdown (reducing IDD to ≤1µA), WLP-8 package (0.35mm pitch), and compatibility with external resistor networks for custom trip points.

Technical Context

The MAX40070ANA16+ implements a high-precision input stage supporting common-mode voltages up to 27.5V independent of VDD, enabling direct sensing of high-side signals without level-shifting. Its internal 1.6V reference exhibits ±1.3% accuracy and 15ppm/°C thermal drift over full temperature range.

It features an open-drain output capable of sinking up to 2mA with VOL ≤ 0.4V, and supports parallel connection of multiple comparators via shared pull-up. The EN pin provides active-low shutdown control, reducing supply current to ≤1000nA while preserving fast 250µs turn-on time.

Key Specifications

Pinout & Package

MAX40070ANA16+ uses an 8-bump wafer-level package (WLP) with 0.35mm pitch, footprint optimized for minimal PCB area in wearable and implantable devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage, low-power comparator applications.

Compared with TLV3604DRYR and LMV7235M5X, the MAX40070ANA16+ delivers unique integration of high-voltage input, internal reference, and programmable hysteresis in a sub-1mm² package-enabling simpler, more robust designs for battery-powered industrial and medical systems.

Availability

MAX40070ANA16+ is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial power rail monitoring, and IoT edge node battery management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX40070ANA16+ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX40070/MAX40072 family was designed specifically for ultra-low-power, high-precision voltage monitoring in space-constrained, battery-operated systems - emphasizing rail-to-rail high-voltage input capability, integrated reference, and programmable hysteresis.

FAQ

What is the maximum input voltage the MAX40070ANA16+ can handle on its IP pin?

The MAX40070ANA16+ supports an input voltage range of 0V to +27.5V on the IP pin, independent of the VDD supply voltage. This allows direct connection to 24V industrial rails without external attenuation. Absolute maximum rating for IP is +40V, but operation beyond +27.5V may degrade accuracy or reliability. Always refer to the absolute maximum ratings table in the official datasheet for safe design margins.

Does the MAX40070ANA16+ require external components to function as a basic comparator?

The MAX40070ANA16+ can operate as a basic comparator with only VDD, GND, IP, IM, and a pull-up resistor on OUT - leveraging its internal 1.6V reference and 90mV hysteresis. External resistors on HYST and REF are optional and used only when customizing threshold or adding hysteresis beyond the internal value. No external reference or biasing is required for standard operation.

How does the EN pin affect power consumption and wake-up time in the MAX40070ANA16+?

When EN is pulled high (VDD), the MAX40070ANA16+ enters shutdown mode, reducing supply current to ≤1000nA. The device wakes up in 250µs after EN returns low, reaching full operational state at 90% of nominal output swing. This enables energy-efficient wake-on-event architectures in battery-powered applications without sacrificing responsiveness.

Can multiple MAX40070ANA16+ devices share a single pull-up resistor on their OUT pins?

Yes - the MAX40070ANA16+ features an open-drain output stage explicitly designed for wired-OR configurations. Multiple devices can connect their OUT pins to a common pull-up resistor, allowing a single fault bus to indicate if any comparator detects an out-of-range condition. Ensure total sink current remains within 2mA per device and that pull-up voltage does not exceed 8V relative to GND.

What is the purpose of the HYST pin on the MAX40070ANA16+ and how is it used?

The HYST pin on the MAX40070ANA16+ connects to an internal current source (3µA typical) and enables programmable hysteresis beyond the default 90mV. By connecting an external resistor between HYST and GND or VDD, users add adjustable hysteresis: ΔVHYS ≈ R × 3µA. This prevents oscillation on noisy or slowly varying inputs - critical in applications like battery voltage monitoring or temperature threshold detection.