Analog Devices Inc./Maxim Integrated MAX40070ANA16+T

Overview

MAX40070ANA16+T from Analog Devices is a single micropower high-voltage comparator with rail-to-rail input range up to +27.5V on IP, 16µA typical supply current, 2µs propagation delay, and integrated 1.6V precision reference-designed for battery-powered industrial sensors and medical wearables requiring ultra-low power and high-precision threshold detection.

For engineers reviewing the MAX40070ANA16+T datasheet, MAX40070ANA16+T pinout, MAX40070ANA16+T application, or MAX40070ANA16+T equivalent, this page delivers verified package mapping (8-bump WLP), confirmed pin functions, real-world hysteresis configuration methods, and validated alternative options for high-voltage comparator selection in space-constrained embedded systems.

Technical Context

The MAX40070ANA16+T implements a high-impedance input stage supporting 0V to +27.5V common-mode voltage independent of VDD, paired with an open-drain output capable of sinking 2mA with VOL ≤ 0.4V and tolerating up to +8V at OUT. Its internal 1.6V reference (±1.3% accuracy, 15ppm/°C drift) feeds a precision 3µA current source enabling external resistor–based threshold and hysteresis tuning.

It integrates 90mV (typ) internal hysteresis referred to IP, supports active-low enable (EN) for shutdown current ≤1µA, and operates across –40°C to +125°C with PSRR ≥56dB and CMRR ≥43dB-making it suitable for noisy industrial environments where stable switching against EMI and supply ripple is critical.

Key Specifications

Pinout & Package

MAX40070ANA16+T is packaged in an 8-bump wafer-level package (WLP) with 0.35mm pitch, footprint size 1.2mm × 1.2mm, and bottom-side bump layout optimized for minimal PCB area in wearable and portable designs.

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 MAX40026AUT+T, the MAX40070ANA16+T uniquely combines 27.5V input tolerance, integrated 1.6V reference, and dedicated HYST/REF pins-enabling fully self-contained, resistor-programmable thresholding in the smallest possible footprint.

Availability

MAX40070ANA16+T is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, IoT edge gateways, notebook power management, and battery-supervised embedded systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX40070ANA16+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The MAX40070ANA16+T belongs to the MAX40070/MAX40072 family-engineered specifically for ultra-low-power, high-voltage comparator applications in space- and energy-constrained portable and industrial electronics.

FAQ

What is the maximum input voltage allowed on the IP pin of the MAX40070ANA16+T?

The MAX40070ANA16+T supports an absolute maximum input voltage of +40V on the IP pin, with guaranteed operation from 0V to +27.5V across the full temperature range. This rail-to-rail capability eliminates level-shifting circuitry when interfacing with 24V industrial buses or automotive systems. The device maintains specified performance-including offset voltage and propagation delay-within this range, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.

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

No, the MAX40070ANA16+T can operate as a functional comparator with only VDD, GND, IP, IM, and a pull-up resistor on OUT. Its internal 1.6V reference and 90mV hysteresis allow immediate use for fixed-threshold detection. External resistors on HYST and REF are optional-used only when customizing hysteresis magnitude or threshold voltage beyond the internal defaults. The WLP package's small size and minimal BOM make it ideal for rapid prototyping and high-volume portable designs.

How does the EN pin function on the MAX40070ANA16+T, and what is its impact on power consumption?

The EN pin on the MAX40070ANA16+T is an active-low enable input: pulling EN high disables the device, reducing supply current to ≤1000nA (max) across –40°C to +125°C. When EN is low (or grounded), the comparator operates normally with 16µA typical supply current. This feature enables precise power gating in duty-cycled systems-such as periodic battery voltage checks in IoT sensors-where microamp-level shutdown current directly extends operational lifetime without compromising wake-up responsiveness.

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

Yes, the MAX40070ANA16+T 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 and VDD (or higher voltage up to +8V), allowing collective fault detection-for example, triggering a system alert if any one of several monitored rails exceeds its threshold. This architecture reduces component count and simplifies PCB routing in multi-channel monitoring applications such as redundant power supplies or distributed sensor arrays.

What is the purpose of the HYST pin on the MAX40070ANA16+T, and how is it used in practice?

The HYST pin on the MAX40070ANA16+T connects to an internal 3µA current source that, when loaded with an external resistor to GND or VDD, adds programmable hysteresis to the comparator's switching behavior. For instance, a 10kΩ resistor yields ~30mV additional hysteresis (3µA × 10kΩ), supplementing the internal 90mV band. This enables precise noise immunity tuning in applications like thermistor-based temperature alarms or slowly varying industrial process signals-without requiring discrete op-amps or complex feedback networks.