Analog Devices Inc. ADA4891-4ARZ-R7

Overview

ADA4891-4ARZ-R7 from Analog Devices is a quad-channel, rail-to-rail output, CMOS high-speed operational amplifier optimized for video, imaging, and active filter applications. It delivers 220 MHz −3 dB bandwidth (G = +1), 170 V/µs slew rate, 28 ns settling time to 0.1%, 0.05% differential gain error, and operates from 2.7 V to 5.5 V single supply with output swing within 50 mV of rails.

For engineers reviewing the ADA4891-4ARZ-R7 datasheet, ADA4891-4ARZ-R7 pinout, ADA4891-4ARZ-R7 application, or ADA4891-4ARZ-R7 equivalent, this page provides verified specifications, SOIC-14 package details, real-world use cases in automotive infotainment and contact image sensor buffering, and validated alternative parts for design flexibility.

Technical Context

The ADA4891-4ARZ-R7 implements a fully differential-capable, unity-gain stable voltage-feedback architecture with true single-supply operation - input common-mode range extends 300 mV below negative rail, and output swings rail-to-rail (within 50 mV). Its low 9 nV/√Hz input voltage noise at 1 MHz and −79 dBc SFDR at 1 MHz support high-fidelity signal conditioning.

Designed for demanding dynamic performance, it maintains 25 MHz 0.1 dB gain flatness (G = +2, RL = 150 Ω) and −80 dB all-hostile crosstalk at 5 MHz, enabling simultaneous high-speed channel operation in quad configuration without measurable inter-channel interference.

Key Specifications

Pinout & Package

ADA4891-4ARZ-R7 is housed in a 14-lead SOIC_N (R-14) package, RoHS-compliant, with standard JEDEC footprint and 1.27 mm pitch. Pin 1 marked by notch or dot; pins are not internally connected except as defined in Figure 5 of Rev. F datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6629MA/NOPB and AD8054ARZ, ADA4891-4ARZ-R7 uniquely balances 220 MHz bandwidth, rail-to-rail output, 0.05% video linearity, and 4.4 mA per amplifier - making it the only quad solution meeting full NTSC/PAL reconstruction specs in a single SOIC-14 package.

Availability

ADA4891-4ARZ-R7 is available at Aetrix Electronics and suitable for automotive infotainment systems, contact image sensor interfaces, and consumer HD video reconstruction requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADA4891-4ARZ-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 ADA4891 family was designed specifically for cost-sensitive, high-speed signal conditioning in automotive video, imaging, and active filtering - emphasizing rail-to-rail operation, low distortion, and robust temperature performance from −40°C to +125°C.

FAQ

What is the operating temperature range for ADA4891-4ARZ-R7?

The ADA4891-4ARZ-R7 is specified to operate from −40°C to +125°C, meeting AEC-Q100 Grade 1 requirements for automotive under-hood applications. This range is validated across all electrical parameters in Tables 1 and 2 of Rev. F datasheet, including bandwidth, slew rate, and distortion performance - ensuring reliability in engine control units, camera modules, and infotainment head units exposed to extreme thermal cycling.

Does ADA4891-4ARZ-R7 support true single-supply operation?

Yes, ADA4891-4ARZ-R7 supports true single-supply operation: its input common-mode voltage range extends to −VS − 0.3 V, allowing inputs below ground (e.g., −0.3 V with VS = 0 V), and its output swings to within 50 mV of both supply rails. This eliminates level-shifting circuitry in 3.3 V or 5 V systems - confirmed in the General Description and Table 1 "Input Common-Mode Voltage Range" and "Output Voltage Swing" entries.

What is the maximum load drive capability of ADA4891-4ARZ-R7?

ADA4891-4ARZ-R7 delivers 125 mA linear output current at −40 dBc distortion (1 MHz, VO = 2 V p-p), with short-circuit capability of 205 mA sourcing and 307 mA sinking. It drives 150 Ω video loads with 0.05% differential gain error - verified in Table 1 "Output Current" and "Differential Gain Error" sections under RL = 150 Ω conditions.

Is ADA4891-4ARZ-R7 pin-compatible with other members of the ADA4891 family?

No - ADA4891-4ARZ-R7 uses a 14-lead SOIC_N package with dedicated pins for four independent amplifiers (including shared −VS on Pins 8 and 11), while ADA4891-1 uses 5-lead SOT-23 or 8-lead SOIC, and ADA4891-2 uses 8-lead SOIC/MSOP. Pinouts differ fundamentally; PCB layout must be specific to the quad version. Confirmed via Figures 1–5 in Rev. F datasheet.

What video standards does ADA4891-4ARZ-R7 support with guaranteed performance?

ADA4891-4ARZ-R7 guarantees NTSC video performance: 0.05% differential gain error and 0.25° differential phase error at G = +2, RL = 150 Ω, +VS = 5 V - directly measured and specified in Table 1. These values meet SMPTE RP 168 and ITU-R BT.470 standards for broadcast-quality analog video signal integrity in consumer and automotive applications.