Analog Devices Inc. ADM810MAKSZ-REEL7

Overview

ADM810MAKSZ-REEL7 from Analog Devices is a microprocessor supervisory circuit with push-pull active-high RESET output, 4.38 V reset threshold, −40°C to +125°C operating temperature range, 17 μA supply current, and SC70-3 package. It monitors VCC in embedded controllers and ensures reliable power-on reset assertion for 240 ms (typical) during startup.

For engineers reviewing the ADM810MAKSZ-REEL7 datasheet, ADM810MAKSZ-REEL7 pinout, ADM810MAKSZ-REEL7 application, or ADM810MAKSZ-REEL7 equivalent, key selection criteria include reset polarity (active-high), threshold accuracy (±2.5% over temperature), low-power operation, SC70 footprint compatibility, and brownout detection down to 1 V VCC.

Technical Context

The ADM810MAKSZ-REEL7 integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms reset timeout timer. Its reference circuit maintains stable threshold performance across −40°C to +125°C, enabling robust operation in automotive and industrial environments.

It features a push-pull RESET output capable of sourcing 150 μA at 1.8 V < VCC < VTH(min), with logic-high voltage defined as 0.8 × VCC and logic-low voltage ≤ 0.4 V at ISINK = 3.2 mA - ensuring direct interface with 3.3 V and 5 V microcontrollers without external pull-ups.

Key Specifications

Pinout & Package

ADM810MAKSZ-REEL7 uses a 3-lead SC70 (KS-3) package with exposed pad not electrically connected. Pin 1 = VCC, Pin 2 = RESET (active-high push-pull), Pin 3 = GND - verified per Figure 4 and Table 4 of Rev. I datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Compared with ADM809MAKSZ-REEL7, ADM810MAKSZ-REEL7 eliminates external pull-up needs and simplifies firmware integration via active-high signaling; compared with TPS3808G18DBVR, it provides exact 4.38 V threshold compliance and fixed 240 ms timeout without external components - critical for qualification-critical industrial applications.

Availability

ADM810MAKSZ-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical handheld diagnostics, smart energy meters, and battery-backed embedded systems requiring stable component supply across extended temperature ranges.

Supply support for ADM810MAKSZ-REEL7 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 ADM810 series belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power-on reset generation in harsh-temperature embedded systems where supply rail integrity is mission-critical.

FAQ

What is the reset threshold voltage of the ADM810MAKSZ-REEL7?

The ADM810MAKSZ-REEL7 has a nominal reset threshold voltage of 4.38 V, with guaranteed tolerance of ±2.5% over the full −40°C to +125°C operating temperature range. This value is confirmed in Table 3 and Table 1 of the Rev. I datasheet, and applies specifically to the "M" variant in the ADM810 family. The ADM810MAKSZ-REEL7 maintains this threshold stability using an internal bandgap reference and trimmed comparator.

Does the ADM810MAKSZ-REEL7 require an external pull-up resistor on the RESET pin?

No, the ADM810MAKSZ-REEL7 does not require an external pull-up resistor because it features a push-pull active-high RESET output. Unlike the open-drain ADM803 or active-low ADM809 variants, the ADM810MAKSZ-REEL7 drives both logic high and logic low states internally. This eliminates external components and reduces BOM count, as confirmed in the General Description and Pin Configurations sections of the datasheet.

What is the minimum VCC voltage at which the ADM810MAKSZ-REEL7 can assert a valid RESET signal?

The ADM810MAKSZ-REEL7 asserts a valid RESET signal down to VCC = 1.0 V, as specified in the "VCC OPERATING VOLTAGE RANGE" parameter in Table 1 of the datasheet. Below 1.0 V, the internal circuitry ceases to function reliably. This capability enables robust brownout detection in systems where supply voltage may decay gradually, such as during battery discharge or power interruption scenarios.

Is the ADM810MAKSZ-REEL7 RoHS compliant and what package does it use?

Yes, the ADM810MAKSZ-REEL7 is RoHS compliant, indicated by the "Z" suffix in the part number per the Ordering Guide footnote. It is packaged in a 3-lead SC70 (KS-3) outline, measuring 2.0 mm × 2.1 mm with 0.65 mm lead pitch, and is fully compatible with standard reflow soldering processes. This information is explicitly stated in the Ordering Guide and Outline Dimensions sections of the Rev. I datasheet.

How long is the reset timeout period for the ADM810MAKSZ-REEL7 during power-up?

The ADM810MAKSZ-REEL7 provides a typical power-up reset timeout of 240 ms, with a guaranteed minimum of 140 ms and maximum of 460 ms over −40°C to +85°C, as documented in the "RESET ACTIVE TIMEOUT PERIOD" row of Table 1. This fixed internal timer ensures the microprocessor remains held in reset long enough for power rails and clocks to stabilize before firmware execution begins.