Analog Devices Inc. ADCMP602BRMZ

Overview

ADCMP602BRMZ from Analog Devices is a rail-to-rail, single-supply high-speed comparator with independent input (VCCI) and output (VCCO) supplies, 3.5 ns propagation delay at 2.5 V, programmable hysteresis via LE/HYS pin, and dedicated shutdown (SDN) control - used in clock/data restoration, high-speed trigger circuitry, and ATE systems.

For engineers reviewing the ADCMP602BRMZ datasheet, ADCMP602BRMZ pinout, ADCMP602BRMZ application, or ADCMP602BRMZ equivalent, key selection criteria include its dual-supply flexibility (VCCI/VCCO ±3.0 V differential), 8-lead MSOP package with GND-referenced layout, −40°C to +125°C operation, and TTL/CMOS-compatible output driving up to 5 pF with full timing specs.

Technical Context

The ADCMP602BRMZ implements a proprietary XFCB2 process-based comparator core with separate input and output supply domains, enabling wide common-mode input range (−0.2 V to VCCI + 0.2 V) while maintaining independent output swing control. Its latch/hysteresis pin (LE/HYS) functions as a 1.25 V bias node with ~7 kΩ series resistance for precise hysteresis programming or TTL/CMOS-level latching.

Unlike ADCMP600/601, ADCMP602BRMZ integrates a dedicated SDN pin that reduces ICCI to 240–400 µA and ICCO to 30 µA in shutdown mode, with 20 ns sleep time and 50 ns wake-up time. Propagation delay dispersion remains <1.2 ns across 10–125 mV overdrive, and common-mode dispersion is limited to 200 ps - critical for pulse spectroscopy and zero-crossing detection where timing jitter must be minimized.

Key Specifications

Pinout & Package

ADCMP602BRMZ is housed in an 8-lead MSOP package (3.0 mm × 4.9 mm, 0.65 mm pitch) with exposed pad for thermal enhancement (θJA = 130°C/W). Pin 1 is VCCI; pin 6 is GND; pin 8 is VCCO - requiring separate bypassing of both supply domains to ground with low-inductance 0.01 µF capacitors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed comparator applications.

Compared with ADCMP602BRMZ, ADCMP601BRJZ omits shutdown but retains identical speed and hysteresis control, while MAX999EUK+T trades flexibility for lower cost and smaller footprint - making ADCMP602BRMZ optimal for systems needing independent supply control, fast power cycling, and precision hysteresis tuning.

Availability

ADCMP602BRMZ is available at Aetrix Electronics and suitable for high-speed instrumentation, automated test equipment (ATE), and pulse spectroscopy systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADCMP602BRMZ 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 ADCMP60x family was designed specifically for ultra-high-speed, low-jitter threshold detection in instrumentation, communications, and test systems - emphasizing timing precision, supply flexibility, and robust noise immunity.

FAQ

What is the maximum allowable differential voltage between VCCI and VCCO for ADCMP602BRMZ?

The ADCMP602BRMZ supports a maximum operating differential of ±3.0 V between VCCI and VCCO. During nonoperating conditions, it tolerates up to ±5.5 V. This dual-supply architecture allows independent optimization of input signal range and output logic levels - for example, accepting a −0.5 V to +5.8 V input while generating a clean 2.5 V CMOS output. Exceeding ±3.0 V during operation may cause timing degradation or increased supply current.

How does the LE/HYS pin function in ADCMP602BRMZ compared to ADCMP600/601?

In ADCMP602BRMZ, the LE/HYS pin operates identically to ADCMP601: it serves as a 1.25 V bias node with ~7 kΩ series resistance for hysteresis programming or TTL/CMOS-level latching. Unlike ADCMP600 (no LE/HYS), ADCMP602BRMZ retains full latch/hysteresis capability while adding SDN. Driving LE/HYS low enables latch mode; biasing it sets hysteresis from 0.1 mV to 160 mV - all without external feedback components.

Can ADCMP602BRMZ operate with VCCI = 3.3 V and VCCO = 1.8 V?

No - ADCMP602BRMZ requires VCCI and VCCO to each be within 2.5 V to 5.5 V, and their difference must stay within ±3.0 V. While VCCI = 3.3 V and VCCO = 1.8 V yields a valid 1.5 V differential, VCCO = 1.8 V falls below the 2.5 V minimum specification. Operating VCCO < 2.5 V risks undefined output levels, increased propagation delay, and potential failure to meet VOL/VOH specs. Use VCCO ≥ 2.5 V for guaranteed performance.

What is the purpose of the exposed pad on the ADCMP602BRMZ MSOP package?

The exposed pad on the ADCMP602BRMZ MSOP package is electrically connected to GND and serves as a thermal conduction path to the PCB. It reduces θJA from 130°C/W (with proper soldering to a thermal pad) to significantly lower values - improving power dissipation capability and junction temperature stability during continuous high-speed operation. The pad must be soldered to a solid GND plane with multiple thermal vias; leaving it floating degrades thermal performance and may cause parametric shift at elevated temperatures.

Does ADCMP602BRMZ require external pull-up or pull-down resistors on the Q output?

No - ADCMP602BRMZ features a push-pull CMOS/TTL-compatible output stage that actively drives both high and low states without external termination. The Q output delivers VOH ≥ VCCO − 0.4 V and VOL ≤ 0.4 V at 8 mA, meeting standard logic thresholds. External resistors are unnecessary and may degrade rise/fall times or increase power consumption. Only add series resistance if driving long traces or transmission lines to suppress reflections - not for basic logic interfacing.