Analog Devices Inc. ADCMP601BKSZ-R2

Overview

ADCMP601BKSZ-R2 from Analog Devices is a rail-to-rail, single-supply high-speed comparator in a 6-lead SC70 package, featuring 3.5 ns propagation delay at 2.5 V, 10 mW power consumption, programmable hysteresis/latch via LE/HYS pin, and −0.2 V to VCC + 0.2 V input common-mode range. It serves as a precision threshold detector in clock restoration and pulse spectroscopy systems.

For engineers reviewing the ADCMP601BKSZ-R2 datasheet, ADCMP601BKSZ-R2 pinout, ADCMP601BKSZ-R2 application, or ADCMP601BKSZ-R2 equivalent, key selection criteria include propagation delay dispersion (<1.2 ns over 10–125 mV overdrive), latch timing (tS = −2 ns, tH = 2.6 ns), CMOS/TTL-compatible output drive (8 mA sink/source), input bias current (±2 µA typ), and operating temperature range (−40°C to +125°C).

Technical Context

The ADCMP601BKSZ-R2 uses Analog Devices' XFCB2 process to deliver matched rising/falling propagation delays and low overdrive dispersion. Its dual-front-end input stage enables rail-to-rail operation with crossover bias points near 0.8 V and 1.6 V, ensuring stable offset behavior across the full common-mode range.

It integrates a single-pin LE/HYS control that supports both latch mode (driven low) and programmable hysteresis (biased with resistor or current source), with hysteresis adjustable from 0.1 mV to 160 mV. The TTL/CMOS output stage drives up to 5 pF while maintaining linear degradation under higher capacitive loads.

Key Specifications

Pinout & Package

ADCMP601BKSZ-R2 is housed in a 6-lead SC70 package (JEDEC MO-203AA), 2.0 mm × 1.25 mm footprint, 0.95 mm height, with 0.5 mm lead pitch and wettable flanks for automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADCMP601BKSZ-R2, ADCMP600BKSZ-REEL7 sacrifices programmability for smaller size and lower cost, while MAX999EXT+T lacks integrated hysteresis and latch functionality, requiring additional passive components and increasing design risk in high-speed layouts.

Availability

ADCMP601BKSZ-R2 is available at Aetrix Electronics and suitable for high-speed instrumentation, automatic test equipment (ATE), and pulse spectroscopy systems requiring stable component supply, consistent parametric performance, and long-term industrial temperature support.

Supply support for ADCMP601BKSZ-R2 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, with R&D and manufacturing operations worldwide.

The ADCMP600/601/602 family was designed specifically for ultra-fast, low-jitter threshold detection in time-critical applications including ATE, medical imaging, and high-speed communications infrastructure.

FAQ

What is the maximum input overdrive the ADCMP601BKSZ-R2 can tolerate without damage?

The ADCMP601BKSZ-R2 supports differential input voltages up to ±(VCCI + 0.5 V) and absolute input voltages from −0.5 V to VCCI + 0.5 V per Absolute Maximum Ratings. At VCCI = 5.5 V, this allows up to ±6.0 V differential swing or −0.5 V to +6.0 V single-ended input. Exceeding these limits risks permanent damage. The ADCMP601BKSZ-R2 input stage includes robust protection against large overdrive, and outputs do not phase-reverse when the valid input range is exceeded.

Can the ADCMP601BKSZ-R2 operate with separate input and output supplies?

No - the ADCMP601BKSZ-R2 has a single shared supply pin (VCCI/VCCO), unlike the 8-lead ADCMP602 which separates VCCI and VCCO. It is designed for single-supply operation from 2.5 V to 5.5 V, powering both input and output stages from one rail. Attempting split supplies on ADCMP601BKSZ-R2 violates its pinout and may cause malfunction or damage.

How does the LE/HYS pin function in latch mode versus hysteresis mode?

In latch mode, driving the LE/HYS pin low (≤0.4 V) captures and holds the comparator output state until the next low pulse; minimum pulse width is 21 ns. In hysteresis mode, biasing the pin with a resistor to GND sets hysteresis from 0.1 mV to 160 mV - the pin presents a 1.25 V nominal bias through ~7 kΩ series resistance. Both modes coexist: an open-drain driver can toggle latch while maintaining hysteresis bias. The ADCMP601BKSZ-R2 supports this dual functionality without external components.

What is the minimum load capacitance required to achieve the specified 3.5 ns propagation delay?

The 3.5 ns propagation delay for ADCMP601BKSZ-R2 is specified with a 5 pF capacitive load at the Q output. Performance degrades linearly beyond this value - rise/fall times increase and total delay rises proportionally. For optimal timing, keep trace capacitance + destination input capacitance ≤5 pF. If driving higher capacitance (e.g., >10 pF), use a dedicated buffer to preserve ADCMP601BKSZ-R2's speed advantage.

Does the ADCMP601BKSZ-R2 require external bypass capacitors, and where should they be placed?

Yes - two 0.01 µF high-quality ceramic bypass capacitors are mandatory: one between VCCI/VCCO and GND, and another between GND and the same supply pin, placed as close as possible to the ADCMP601BKSZ-R2 package with redundant vias to the ground plane. This minimizes high-frequency supply impedance and prevents oscillation. Failure to implement proper bypassing results in increased propagation delay dispersion and potential instability, especially above 100 MHz. The ADCMP601BKSZ-R2's performance depends critically on this layout practice.