Analog Devices Inc. ADM6710HARJZ-REEL7

Overview

ADM6710HARJZ-REEL7 from Analog Devices is a low-voltage, high-accuracy triple/quad-supply supervisory IC that monitors up to four system power rails. It features factory-set thresholds for 5 V, 3.3 V, and two adjustable inputs (0.62 V reference), ±5% tolerance, 200 ms reset timeout, and operates across −40°C to +125°C - used in server power sequencing and telecom baseband boards.

For engineers reviewing the ADM6710HARJZ-REEL7 datasheet, ADM6710HARJZ-REEL7 pinout, ADM6710HARJZ-REEL7 application, or ADM6710HARJZ-REEL7 equivalent, key selection criteria include its dual adjustable input configuration, open-drain RESET with internal 10 µA pull-up to IN2, glitch-immune undervoltage detection, and SOT-23-6 packaging for space-constrained embedded control systems.

Technical Context

The ADM6710HARJZ-REEL7 implements independent voltage comparators per monitored input, each referenced to a trimmed 0.62 V internal bandgap with 0.3% hysteresis. Its reset logic asserts active-low RESET when any input falls below its threshold and holds it for 200 ms (typ) after all inputs recover.

Power is derived from IN2 (monitored 3.3 V rail), enabling self-powered supervision without auxiliary supply. The device guarantees RESET validity down to IN1 or IN2 = 1 V, supports resistor-divider scaling for adjustable thresholds, and rejects transients ≤100 µs per Figure 7.

Key Specifications

Pinout & Package

ADM6710HARJZ-REEL7 is housed in a 6-lead SOT-23 (RJ-6) package, 2.9 mm × 1.6 mm × 1.1 mm, RoHS-compliant, with moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervision applications.

Compared with TPS3808G33DBVR and MAX6816EUT+T, the ADM6710HARJZ-REEL7 uniquely provides two independently scalable inputs alongside fixed 5 V and 3.3 V monitoring - enabling consolidated supervision of heterogeneous power domains (e.g., 5 V, 3.3 V, 1.2 V, 0.85 V) in a single SOT-23 footprint.

Availability

ADM6710HARJZ-REEL7 is available at Aetrix Electronics and suitable for telecom infrastructure, server baseboard management, and industrial PLC applications requiring stable component supply, extended temperature performance, and multi-rail supervision in compact packaging.

Supply support for ADM6710HARJZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADM6710 family delivers compact, high-accuracy power supervision for multi-rail embedded systems - designed specifically for telecom, computing, and industrial applications where reliability across extreme temperatures and immunity to supply transients are mandatory.

FAQ

What is the function of the IN2 pin on the ADM6710HARJZ-REEL7?

The IN2 pin on the ADM6710HARJZ-REEL7 serves a dual role: it is both the monitored 3.3 V supply input and the power source for the IC itself. This self-powered architecture eliminates the need for an auxiliary supply. The RESET output remains valid as long as IN2 stays above 1 V, and the internal 10 µA pull-up on the RESET pin connects to IN2 - making ADM6710HARJZ-REEL7 ideal for systems where the 3.3 V rail is the primary power domain.

Can the ADM6710HARJZ-REEL7 monitor voltages below 1.8 V?

Yes, the ADM6710HARJZ-REEL7 can monitor voltages below 1.8 V using its two adjustable inputs (IN3 and IN4), each referenced to a precise 0.62 V internal threshold. By adding external resistor dividers, users can scale higher voltages down to match this reference - enabling accurate supervision of core rails such as 1.2 V, 0.9 V, or even 0.85 V. The datasheet confirms 0.62 V ±1.5% accuracy for the adjustable threshold, and ADM6710HARJZ-REEL7's ±5% tolerance applies only to its fixed 5 V and 3.3 V inputs.

What is the reset timeout period of the ADM6710HARJZ-REEL7 and how is it implemented?

ADM6710HARJZ-REEL7 has a typical reset timeout period of 200 ms, with a specified range of 140 ms to 280 ms over temperature. This delay is generated by an internal timer that begins counting only after all monitored inputs rise above their respective thresholds. The timeout ensures the microprocessor or FPGA remains held in reset long enough for power supplies to fully stabilize and clocks to lock - a critical requirement in complex digital systems. This timing is factory-trimmed and does not require external components, unlike RC-based solutions.

How does the ADM6710HARJZ-REEL7 handle unused input pins?

Unused input pins on the ADM6710HARJZ-REEL7 - particularly IN3 and IN4 - must never be left floating or grounded, as this may cause unpredictable reset behavior. Per the datasheet, they must be connected to a supply voltage exceeding their configured threshold (e.g., tie IN3 to 3.3 V if set for 1.2 V monitoring). For adjustable inputs, a 1 MΩ series resistor to IN2 is recommended to limit bias current. This requirement ensures comparator stability and prevents false triggering, and applies directly to ADM6710HARJZ-REEL7's dual-adjustable configuration.

Is the ADM6710HARJZ-REEL7 compatible with 1.8 V logic systems?

Yes, the ADM6710HARJZ-REEL7 is compatible with 1.8 V logic systems via its open-drain RESET output. Although the internal pull-up connects to IN2 (3.3 V), the RESET pin can safely interface with 1.8 V logic inputs because it sinks current rather than sourcing it. When asserted, RESET pulls low to <0.3 V (at 2 mA sink), well within 1.8 V logic '0' threshold. When deasserted, external pull-up to 1.8 V is recommended - the internal 10 µA pull-up is overridden without damage, preserving signal integrity in mixed-voltage designs containing ADM6710HARJZ-REEL7.