ADA4891-4ARUZ-R7

Overview

The ADA4891-4ARUZ-R7 is a quad-channel, low-cost CMOS high-speed operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output capability and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device provides a small-signal bandwidth of 220 MHz at unity gain (G = +1) and achieves a slew rate of 170 V/µs. Key performance metrics include a settling time to 0.1% of 28 ns, an input offset voltage of ±2.5 mV, and an input bias current of ±50 pA. Each amplifier channel draws a quiescent current of 4.4 mA.

Feature Summary

• Rail-to-rail output stage enables maximum dynamic range by swinging within 50 mV of the supply rails.
• High-speed performance with a 220 MHz bandwidth and 170 V/µs slew rate for fast signal processing.
• Low power consumption with a quiescent current of 4.4 mA per amplifier channel.
• Single-supply operation with an input voltage range extending 300 mV below the negative rail.

Applications

• Automotive infotainment systems
• Automotive driver assistance systems
• Imaging applications such as CCD buffers and contact image sensor buffers
• Consumer video equipment
• Active filters

Procurement Notes

Verify that the specific suffix ARUZ-R7 corresponds to the 14-lead TSSOP package and tape-and-reel packaging configuration. Confirm the component meets automotive qualification requirements if intended for vehicle electronics. Ensure the ordering part number matches the exact quad-channel variant required for the design.

Selection Notes

Select this component when a quad-channel configuration is necessary alongside high-speed signal handling capabilities. The wide operating temperature range from −40°C to +125°C supports demanding environmental conditions. Consider the 14-lead TSSOP package dimensions during layout planning to ensure adequate thermal dissipation and board space allocation.

Part Context

This component belongs to the ADA4891 family, which includes single, dual, triple, and quad-channel variants. All members share identical electrical characteristics but differ in channel count and physical package options. The quad version utilizes a 14-lead SOIC or TSSOP footprint, distinguishing it from the smaller packages used by the single and dual channels.

Replacement Considerations

Direct substitutes within the same family include the ADA4891-1, ADA4891-2, and ADA4891-3. These alternatives offer identical electrical specifications but provide one, two, or three channels respectively. Verify pin compatibility and package dimensions before substituting to ensure proper integration into existing circuit designs.

FAQ

Does the ADA4891-4 support shutdown functionality?

No, the ADA4891-4 does not have a disable feature. Only the ADA4891-3 variant includes dedicated power-down pins for controlling device operation.

What is the input common-mode voltage range?

The input common-mode voltage range extends from 300 mV below the negative supply rail to 800 mV below the positive supply rail.