Analog Devices Inc. ADCMP580BCP-R2

Overview

ADCMP580BCP-R2 from Analog Devices is an ultrafast SiGe voltage comparator with CML output drivers, designed for high-speed threshold detection in 10 Gbps serial data paths. It delivers 180 ps propagation delay, 37 ps output rise/fall time, and 200 fs random jitter, operating across −40°C to +125°C with ±5 V supplies and −2 V to +3 V input range.

For engineers reviewing the ADCMP580BCP-R2 datasheet, ADCMP580BCP-R2 pinout, ADCMP580BCP-R2 application, or ADCMP580BCP-R2 equivalent, this page provides verified functional role, validated timing performance, confirmed CML interface behavior, and real-world latch/hysteresis implementation guidance - all specific to the ADCMP580BCP-R2 variant.

Technical Context

The ADCMP580BCP-R2 implements a differential SiGe comparator core with on-chip 50 Ω input terminations at VP and VN, referenced to VTP and VTN respectively. Its CML output stage drives 400 mV into 50 Ω to ground, with matched rise/fall times and deterministic jitter under 15 ps at 5 Gbps.

It features dual complementary latch enable inputs (LE/LE) terminated to VTT (ground for ADCMP580), enabling precise edge-triggered latching with 95 ps setup time and −90 ps hold time. Hysteresis is resistor-programmable via the HYS pin connected to VEE, supporting stable operation in noisy high-speed environments.

Key Specifications

Pinout & Package

The ADCMP580BCP-R2 is housed in a 16-lead, 3 mm × 3 mm, 0.8 mm height LFCSP package with exposed pad. The metallic back surface is electrically isolated and may be left floating or soldered to PCB for thermal/mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast comparator applications.

Compared with ADCMP580BCP-R2, ADCMP581BCP-R2 and ADCMP582BCP-R2 share identical propagation delay, jitter, and input architecture but differ fundamentally in output driver topology, termination reference, and supply requirements - making them functionally distinct, not pin-compatible, alternatives requiring board-level adaptation.

Availability

ADCMP580BCP-R2 is available at Aetrix Electronics and suitable for automatic test equipment (ATE), high-speed instrumentation, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADCMP580BCP-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.

The ADCMP580BCP-R2 belongs to the ADCMP58x family of ultrafast SiGe comparators, engineered specifically for 10 Gbps+ signal restoration, threshold detection, and high-fidelity timing capture in ATE, instrumentation, and medical diagnostics.

FAQ

What is the correct termination configuration for ADCMP580BCP-R2 CML outputs?

The ADCMP580BCP-R2 CML outputs must be terminated to ground via 50 Ω resistors at the load end of the transmission line. Its internal output stage is designed to drive 400 mV into 50 Ω to GND, matching standard CML receiver thresholds. Do not terminate to −2 V or VCCO − 2 V - those configurations apply only to ADCMP581BCP-R2 and ADCMP582BCP-R2, respectively. Proper grounding of VTT (Pin 8) is mandatory for correct latch operation.

Does ADCMP580BCP-R2 support resistor-programmable hysteresis, and how is it implemented?

Yes, ADCMP580BCP-R2 supports resistor-programmable hysteresis via the HYS pin (Pin 14). Leaving HYS open yields zero hysteresis. To add hysteresis, connect HYS to VEE (Pin 13) through a resistor - e.g., 1 kΩ yields ~10 mV, 500 Ω yields ~20 mV (per Figure 8). This adds noise immunity without affecting propagation delay or input offset voltage, and is fully compatible with the ADCMP580BCP-R2's CML output architecture.

What are the absolute maximum ratings for ADCMP580BCP-R2 supply voltages?

The ADCMP580BCP-R2 has absolute maximum supply ratings of VCCI = −0.5 V to +6.0 V, VEE = −6.0 V to +0.5 V, and no VCCO supply required (unlike ADCMP582BCP-R2). Exceeding these limits - even momentarily - may cause permanent damage. Recommended operating conditions are VCCI = +4.5 V to +5.5 V and VEE = −5.5 V to −4.5 V. These ratings are strictly defined in the official ADCMP580/581/582 Rev. B datasheet, Page 6.

How does the latch function operate on ADCMP580BCP-R2, and what is the required VTT connection?

The ADCMP580BCP-R2 uses complementary latch enable inputs (LE and LE, Pins 6 and 7), both internally terminated to VTT (Pin 8). For ADCMP580BCP-R2, VTT must be connected to ground to establish the correct termination reference for CML-compatible latch control. In compare mode (LE low, LE high), outputs track inputs; in latch mode (LE high, LE low), outputs freeze the input state at the LE rising edge. Setup time is 95 ps, hold time is −90 ps.

Can ADCMP580BCP-R2 accept LVDS or PECL inputs directly?

Yes, ADCMP580BCP-R2 accepts LVDS and PECL inputs directly due to its −2 V to +3 V input voltage range and on-chip 50 Ω terminations. For LVDS (±350 mV differential), connect VP and VN to the differential pair with VTP and VTN grounded. For PECL (e.g., 4.0 V common-mode), ensure the input stays within −2 V to +3 V - use AC coupling or level-shifting if necessary. Input resistance is 47–53 Ω differential, minimizing reflection in 50 Ω systems.