Analog Devices Inc. ADCMP670-1YUJZ-RL7

Overview

ADCMP670-1YUJZ-RL7 from Analog Devices is a dual low-power comparator IC with integrated 400 mV ±1.5% reference, designed for precision voltage monitoring in space-constrained systems. It features open-drain outputs, 6.5 μA typical quiescent current, and operates from 1.7 V to 5.5 V supply. Its asymmetric input configuration-one noninverting (+INA) and one inverting (−INB)-enables direct window comparator implementation without external resistors, as used in Li-ion battery cell voltage supervision.

For engineers reviewing the ADCMP670-1YUJZ-RL7 datasheet, ADCMP670-1YUJZ-RL7 pinout, ADCMP670-1YUJZ-RL7 application, or ADCMP670-1YUJZ-RL7 equivalent, key selection considerations include its guaranteed 8.9 mV internal hysteresis, −40°C to +125°C operating range, TSOT-6 package footprint, and compatibility with pull-up voltages up to 5.5 V independent of VDD.

Technical Context

The ADCMP670-1YUJZ-RL7 integrates two independent comparators sharing a single precision 400 mV reference: Comparator A uses +INA (noninverting) referenced to the internal 400 mV, while Comparator B uses −INB (inverting) referenced to the same. This architecture eliminates external reference components and enables true window detection with only two external inputs.

Each comparator includes built-in hysteresis (7–13.5 mV over temperature), supports rail-to-rail input down to ground, and delivers open-drain outputs capable of sinking ≥5 mA at 250 mV VOL. The device's propagation delay (8–10 μs) and rise/fall times (0.07–0.5 μs) are specified under defined load and overdrive conditions, ensuring predictable timing in low-power threshold-detection circuits.

Key Specifications

Pinout & Package

ADCMP670-1YUJZ-RL7 is housed in a 6-lead TSOT package (UJ-6), 1 mm profile, JEDEC MO-193-AA compliant (height/thickness exceptions noted). Pin 1 is marked with a dot; leads are gull-wing, 0.95 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power comparator with reference applications.

Compared with LT6700-1IMS8#TRPBF and TLV3691IDCKR, the ADCMP670-1YUJZ-RL7 uniquely combines dual asymmetric inputs, guaranteed hysteresis, and TSOT-6 packaging in a single chip-reducing system-level component count, layout area, and design validation effort for window-comparator use cases.

Availability

ADCMP670-1YUJZ-RL7 is available at Aetrix Electronics and suitable for Li-ion battery protection, portable instrument threshold detection, optoisolator-based fault signaling, and industrial control window monitoring requiring stable component supply across automotive, industrial, and medical-grade production cycles.

Supply support for ADCMP670-1YUJZ-RL7 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 precision instrumentation, industrial automation, communications, and automotive markets.

The ADCMP670 family was designed specifically for ultra-low-power, high-accuracy voltage monitoring in battery-operated and space-constrained systems-emphasizing integrated references, minimal external components, and extended temperature operation.

FAQ

What is the reference voltage accuracy of the ADCMP670-1YUJZ-RL7 over temperature?

The ADCMP670-1YUJZ-RL7 features a 400 mV internal reference with ±1.5% initial accuracy at 25°C. Over the full −40°C to +125°C operating range, the rising input threshold remains within 390 mV to 411 mV (±2.75% worst-case deviation), as specified in Table 4 of the Rev. A datasheet. This performance is achieved without external trimming or calibration.

Can the ADCMP670-1YUJZ-RL7 be used as a standalone window comparator without external components?

Yes-the ADCMP670-1YUJZ-RL7 is architected for this exact purpose. Its +INA input connects to the noninverting terminal of Comparator A (referenced to 400 mV), and −INB connects to the inverting terminal of Comparator B (also referenced to 400 mV). Applying the monitored voltage to both inputs creates a functional window comparator: OUTA goes low when voltage exceeds 400 mV, OUTB goes low when voltage falls below 400 mV. No external resistors or references are needed for basic operation.

What is the maximum sink current capability of the ADCMP670-1YUJZ-RL7 outputs over temperature?

The ADCMP670-1YUJZ-RL7 outputs are guaranteed to sink ≥5 mA while maintaining an output low voltage ≤250 mV across the full −40°C to +125°C temperature range and 1.7 V to 5.5 V supply, per Table 2 and Table 3. At 25°C and 5.5 V supply, the device can sink up to 40 mA, but the 5 mA/250 mV specification is the production-tested minimum guarantee for robust design margin.

Does the ADCMP670-1YUJZ-RL7 require external hysteresis, or is it built-in?

The ADCMP670-1YUJZ-RL7 includes built-in hysteresis of 7–13.5 mV (typical 8.9 mV) per comparator, eliminating the need for external positive feedback networks. This hysteresis is factory-trimmed and specified across temperature and supply voltage. External hysteresis may be added to the noninverting input (+INA) if wider switching bands are required, but it is not necessary for noise immunity in most low-speed monitoring applications.

Is the ADCMP670-1YUJZ-RL7 pin-compatible with the LT6700-1?

No-the ADCMP670-1YUJZ-RL7 is a drop-in functional replacement for the LT6700-1 in circuit behavior (same reference, similar thresholds), but it is not pin-compatible. The LT6700-1 uses an 8-lead MSOP package with different pin assignments, while the ADCMP670-1YUJZ-RL7 uses a 6-lead TSOT package with dedicated +INA and −INB pins. PCB layout must be redesigned to accommodate the TSOT-6 footprint and pinout.