Analog Devices Inc. ADCMP573BCPZ-R2

Overview

ADCMP573BCPZ-R2 from Analog Devices is an ultrafast SiGe comparator with RSPECL output drivers and differential latch inputs, delivering 150 ps propagation delay, 80 ps minimum pulse width, and 200 fs RMS random jitter at 10 Gbps operation. It operates from a single 3.3 V or 5.2 V supply, supports −0.2 V to +3.2 V input range with on-chip 50 Ω terminations, and targets high-speed clock/data restoration in ATE and medical imaging systems.

For engineers reviewing the ADCMP573BCPZ-R2 datasheet, ADCMP573BCPZ-R2 pinout, ADCMP573BCPZ-R2 application, or ADCMP573BCPZ-R2 equivalent, key selection considerations include RSPECL output compatibility with PECL logic families, latch timing (90 ps setup/100 ps hold), resistor-programmable hysteresis, −40°C to +125°C extended industrial temperature rating, and LFCSP-16 package thermal performance.

Technical Context

The ADCMP573BCPZ-R2 implements a high-speed SiGe bipolar front-end with robust input stage immunity to phase reversal under overdrive, paired with a reduced-swing PECL (RSPECL) output stage designed to drive 400 mV into 50 Ω loads terminated at VCCO − 2 V. Its differential latch control uses complementary LE/LE inputs with internal 50 Ω termination to Pin 8 (VCCO/VTT), requiring external connection to VCCO − 2 V for proper RSPECL operation.

Propagation delay dispersion is minimized via architecture optimized for <15 ps overdrive and slew rate dispersion across 10 mV–500 mV overdrive and 2–10 V/ns slew rates. Input common-mode range scales with supply configuration: −0.2 V to +1.2 V at 3.3 V VCCI, or −0.2 V to +3.1 V at 5.2 V VCCI, enabling flexible signal-level interfacing in mixed-supply systems.

Key Specifications

Pinout & Package

The ADCMP573BCPZ-R2 is housed in a 16-lead Lead Frame Chip Scale Package (LFCSP) with exposed pad for thermal management. Pin 1 is located at top-left corner adjacent to marking dot; EPAD is electrically isolated and may be floated or soldered to PCB ground for improved thermal stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADCMP572BCPZ-R2, the ADCMP573BCPZ-R2 trades CML output compatibility for RSPECL interoperability with existing PECL infrastructure, while retaining identical propagation delay, jitter, and latch timing specs. Against MAX999ESA+, it delivers >30× faster propagation and integrated high-speed features essential for ATE and imaging.

Availability

ADCMP573BCPZ-R2 is available at Aetrix Electronics and suitable for automatic test equipment (ATE), medical imaging systems, pulse spectroscopy instrumentation, and high-speed line receivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADCMP573BCPZ-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 design centers worldwide and ISO 9001-certified manufacturing.

The ADCMP573BCPZ-R2 belongs to Analog Devices' ultrafast SiGe comparator product line, engineered specifically for sub-200 ps timing-critical applications in test, measurement, and scientific instrumentation where deterministic jitter and propagation delay stability are paramount.

FAQ

What is the recommended termination for ADCMP573BCPZ-R2 RSPECL outputs?

The ADCMP573BCPZ-R2 RSPECL outputs must be terminated to VCCO − 2 V using a 50 Ω resistor to ground (or Thevenin equivalent). This matches the output stage design and ensures specified 400 mV swing and 35 ps rise/fall times. Terminating to VCCO (as with CML) will degrade output levels and increase jitter. The VCCO/VTT pin (Pin 8) must also be externally connected to this same VCCO − 2 V potential for proper latch interface operation.

Does ADCMP573BCPZ-R2 support single-supply operation?

Yes, ADCMP573BCPZ-R2 supports true single-supply operation from 3.3 V or 5.2 V applied to both VCCI and VCCO. With VCCI = VCCO = 3.3 V, it accepts −0.2 V to +1.2 V input common-mode range; with VCCI = VCCO = 5.2 V, input range extends to −0.2 V to +3.1 V. Output levels scale accordingly, maintaining 400 mV differential swing into 50 Ω loads terminated at VCCO − 2 V.

How is hysteresis programmed on ADCMP573BCPZ-R2?

Hysteresis on ADCMP573BCPZ-R2 is programmed by connecting an external resistor (RHYS) from the HYS pin (Pin 14) to GND. Values from 1 kΩ to 6 kΩ yield ±1 mV to ±25 mV hysteresis, per Figure 7 in the datasheet. Leaving HYS open disables hysteresis (<±1 mV). No bypass capacitor should be added to HYS, as it degrades jitter performance. The pin is biased at ~250 mV with 600 Ω series resistance.

What is the latch enable timing requirement for ADCMP573BCPZ-R2?

ADCMP573BCPZ-R2 requires 90 ps setup time (tS) and 100 ps hold time (tH) for the latch enable inputs (LE/LE) at 100 mV overdrive. These values are specified for the RSPECL variant and differ from the ADCMP572's 15 ps/5 ps due to RSPECL input buffer characteristics. The latch inputs are internally terminated to Pin 8 (VCCO/VTT), which must be connected to VCCO − 2 V for correct logic thresholds.

Can ADCMP573BCPZ-R2 inputs be used without on-chip termination?

Yes, ADCMP573BCPZ-R2 inputs can be used without on-chip termination by leaving VTP and/or VTN pins unconnected. In this configuration, the internal 50 Ω resistors become stubs, causing reflections. To maintain signal integrity, the source impedance must be back-matched to 50 Ω, and drive source impedance should not exceed 50 Ω. For best high-speed performance, use on-chip termination with VTP/VTN tied to appropriate termination voltage.