Analog Devices Inc. ADA4855-3YCPZ-R7

Overview

ADA4855-3YCPZ-R7 from Analog Devices is a triple, single-supply, rail-to-rail output voltage feedback operational amplifier optimized for high-speed video and imaging signal conditioning. It delivers 410 MHz −3 dB bandwidth (G = 1), 870 V/µs slew rate, and 0.1 dB flatness to 53 MHz at 5 V supply, enabling precise RGB video driver and active filter applications.

For engineers reviewing the ADA4855-3YCPZ-R7 datasheet, ADA4855-3YCPZ-R7 pinout, ADA4855-3YCPZ-R7 application, or ADA4855-3YCPZ-R7 equivalent, key selection criteria include rail-to-rail output swing (0.1 V to 4.9 V), power-down functionality (1.1 mA shutdown current), input common-mode range (−VS − 0.2 V to +VS − 1 V), and 16-lead LFCSP thermal performance.

Technical Context

The ADA4855-3YCPZ-R7 employs a proprietary XFCB3 bipolar process and a novel input stage that simultaneously achieves wide input common-mode range (−0.2 V below ground to 1 V below +VS) and high slew rate (870 V/µs) without sacrificing noise (6.8 nV/√Hz). Its patented rail-to-rail output stage supports 57 mA linear load current per amplifier and fast overdrive recovery critical for video signal integrity.

It integrates a dedicated power-down (PD) pin controlling all three amplifiers with logic-compatible thresholds (+VS − 1.25 V enable level), 78 ns turn-on time, and 1.2 µs turn-off time. The 16-lead LFCSP package features an exposed pad tied to −VS for thermal management and a video-optimized pinout where each amplifier's +IN and OUT pins are adjacent to minimize layout parasitics.

Key Specifications

Pinout & Package

ADA4855-3YCPZ-R7 is housed in a 4 mm × 4 mm, 16-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad connected to −VS. The package supports −40°C to +105°C operation and provides low θJA of 67°C/W for thermally demanding video applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed triple op amp applications.

Compared with ADA4855-3YCPZ-R7, ADA4857-3YCPZ-R7 trades bandwidth for lower quiescent current, while LMH6733MA/NOPB offers rail-to-rail input at the cost of higher power and larger footprint - neither is pin-compatible, and both require layout revision.

Availability

ADA4855-3YCPZ-R7 is available at Aetrix Electronics and suitable for professional video infrastructure, consumer video equipment, and high-speed instrumentation requiring stable component supply with guaranteed long-term availability.

Supply support for ADA4855-3YCPZ-R7 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 ADA4855-3YCPZ-R7 belongs to Analog Devices' high-speed video amplifier product line, engineered specifically for broadcast-quality RGB signal conditioning, active filtering, and imaging chain buffering in single-supply systems.

FAQ

What is the maximum supply voltage for ADA4855-3YCPZ-R7?

The absolute maximum supply voltage for ADA4855-3YCPZ-R7 is 6 V. Operation beyond this risks permanent damage. The recommended operating range is 3 V to 5.5 V, with full specifications guaranteed at 3.3 V and 5 V. At 5.5 V, the device maintains rail-to-rail output swing and 410 MHz bandwidth, but thermal dissipation must be managed per the derating curve in Figure 3.

How does the power-down (PD) pin function on ADA4855-3YCPZ-R7?

The PD pin on ADA4855-3YCPZ-R7 controls all three amplifiers simultaneously. It activates when voltage exceeds +VS − 1.25 V (e.g., >3.75 V at 5 V supply) and powers down when below +VS − 2.5 V (e.g., <2.5 V). Turn-on time is 78 ns; turn-off is 1.2 µs. If unused, tie PD to +VS - leaving it floating is acceptable but less robust against noise.

Can ADA4855-3YCPZ-R7 drive three 75 Ω video loads simultaneously?

Yes, ADA4855-3YCPZ-R7 is explicitly characterized to drive three 75 Ω video loads per amplifier while maintaining 0.1 dB flatness to 50 MHz and −3 dB bandwidth >120 MHz (G = 2). Each amplifier delivers up to 57 mA linear output current at 5 V, supporting simultaneous termination into multiple coaxial lines without gain or phase mismatch.

What is the input common-mode voltage range of ADA4855-3YCPZ-R7?

The input common-mode voltage range of ADA4855-3YCPZ-R7 is −VS − 0.2 V to +VS − 1 V. At 5 V supply, this spans −0.2 V to +4.0 V; at 3.3 V, it is −0.2 V to +2.3 V. This extended range enables direct dc-coupling of video black-level references and compatibility with ac-coupled sources using mid-supply bias networks.

Is ADA4855-3YCPZ-R7 suitable for single-supply 3.3 V operation?

Yes, ADA4855-3YCPZ-R7 is fully specified for 3.3 V operation. At 3.3 V, it delivers 430 MHz −3 dB bandwidth (G = 1), 870 V/µs slew rate, and 55 MHz 0.1 dB flatness - matching or exceeding its 5 V performance in key metrics. Quiescent current drops to 7.5 mA/amplifier, and output swing is 0.1 V to 3.22 V, preserving headroom for video signal integrity.