Analog Devices Inc. ADCMP573BCPZ-RL7

Overview

ADCMP573BCPZ-RL7 from Analog Devices is an ultrafast SiGe comparator with RSPECL output drivers and differential latch inputs, delivering 150 ps propagation delay, 8 GHz equivalent input bandwidth, and 200 fs RMS random jitter. 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-RL7 datasheet, ADCMP573BCPZ-RL7 pinout, ADCMP573BCPZ-RL7 application, or ADCMP573BCPZ-RL7 equivalent, key selection criteria include RSPECL output compatibility with VCCO − 2 V termination, latch timing (90 ps setup/100 ps hold), programmable hysteresis via HYS pin, and operation across −40°C to +125°C.

Technical Context

The ADCMP573BCPZ-RL7 implements a high-speed SiGe bipolar front-end with robust input protection and no phase reversal under overdrive. Its RSPECL output stage drives 400 mV into 50 Ω loads terminated to VCCO − 2 V and maintains 300–450 mV differential swing across temperature.

It features dual latch enable inputs (LE/LE) with complementary logic, 50 Ω internal termination to Pin 8 (VCCO/VTT), and resistor-programmable hysteresis via the HYS pin-biased at ~250 mV with 600 Ω series resistance-enabling ±25 mV hysteresis without external feedback networks.

Key Specifications

Pinout & Package

ADCMP573BCPZ-RL7 is housed in a 16-lead 3 mm × 3 mm LFCSP package with exposed pad (EPAD) for thermal management. The package is lead-free, RoHS-compliant, and rated for extended industrial temperature operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADCMP573BCPZ-RL7, ADCMP572BCPZ-RL7 offers superior latch timing and CML compatibility but requires different termination, while MAX999ESA+ trades speed and jitter for simplicity and cost-making it unsuitable for 10 Gbps or medical imaging use cases.

Availability

ADCMP573BCPZ-RL7 is available at Aetrix Electronics and suitable for automatic test equipment (ATE), medical imaging systems, high-speed line receivers, and peak detection circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADCMP573BCPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADCMP573BCPZ-RL7 belongs to Analog Devices' ultrafast SiGe comparator family, engineered specifically for sub-200 ps timing-critical applications in ATE, medical diagnostics, and high-speed communications infrastructure.

FAQ

What is the recommended termination for ADCMP573BCPZ-RL7 RSPECL outputs?

The ADCMP573BCPZ-RL7 RSPECL outputs must be terminated to VCCO − 2 V using a 50 Ω resistor to ground (or to the VCCO − 2 V rail). Pin 8 (VCCO/VTT) must be externally connected to this same potential to provide correct latch enable biasing and output reference. Failure to terminate correctly results in degraded output swing and increased jitter.

Does ADCMP573BCPZ-RL7 support single-supply operation?

Yes, ADCMP573BCPZ-RL7 supports true single-supply operation with VCCI = VCCO = 3.3 V or 5.2 V. In this configuration, the input common-mode range is −0.2 V to +1.2 V (at 3.3 V) or −0.2 V to +3.1 V (at 5.2 V), and the RSPECL outputs remain functional when VCCO/VTT is tied to VCCO − 2 V.

How is hysteresis programmed on ADCMP573BCPZ-RL7?

Hysteresis on ADCMP573BCPZ-RL7 is programmed by connecting an external resistor between the HYS pin (Pin 14) and GND. A 1 kΩ resistor yields ~10 mV hysteresis; 6 kΩ yields ~25 mV. Leaving HYS open disables hysteresis (<1 mV). No capacitor should be placed on HYS, as it degrades jitter performance.

What is the function of Pins 1 (VTP) and 4 (VTN) on ADCMP573BCPZ-RL7?

Pins 1 (VTP) and 4 (VTN) are dedicated termination return paths for the on-chip 50 Ω input resistors at VP and VN. They allow independent configuration of input termination-e.g., tying VTP to VCCO and VTN to GND enables asymmetric AC-coupled termination-without loading the signal path or introducing parasitics.

Can ADCMP573BCPZ-RL7 operate with VCCI ≠ VCCO?

Yes, ADCMP573BCPZ-RL7 supports split supplies: VCCI may differ from VCCO within −0.2 V to +2.3 V differential. When VCCI = 5.2 V and VCCO = 3.3 V, the input common-mode range extends to −0.2 V to +3.1 V, while RSPECL outputs retain full 300–450 mV swing when properly terminated to VCCO − 2 V.