ADA4856-3YCPZ-R2

Overview

The ADA4856-3 is a triple, single-supply, high-speed video amplifier with a fixed internal gain of +2. It features rail-to-rail output capability and operates on supply voltages ranging from 3 V to 5.5 V. Key performance metrics include a -3 dB bandwidth of 225 MHz at 2 V p-p, a slew rate of 800 V/µs, and a settling time of 5 ns to 0.1% for a 2 V step. The device draws a typical quiescent current of 7.8 mA per amplifier and includes a power-down function that reduces current consumption to approximately 1 mA. It is housed in a 16-lead LFCSP package.

Feature Summary

• Voltage feedback architecture with fixed internal gain of +2
• Rail-to-rail output swing extending within 0.1 V of supply rails
• Integrated power-down feature for low-power operation
• Wide input common-mode voltage range

Applications

• Professional video systems
• Consumer video equipment
• Imaging applications
• Instrumentation circuits
• Base station infrastructure

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure the component matches the required 16-lead LFCSP form factor. Confirm RoHS compliance status through the datasheet or supplier certification. Validate that the part number corresponds to the Rev B specification sheet for accurate electrical parameters.

Selection Notes

Select this component when a fixed gain of +2 is required for video signal processing. The rail-to-rail output allows compatibility with low-voltage single-supply systems down to 3 V. Consider the integrated power-down pin for battery-operated devices requiring standby modes. Verify that the 225 MHz bandwidth meets the application's frequency requirements.

Part Context

This device belongs to Analog Devices' line of high-speed video amplifiers designed for professional and consumer markets. It utilizes an XFCB3 process to achieve high slew rates and wide bandwidths while maintaining low noise characteristics. The triple configuration integrates three identical amplifiers into a single compact package to minimize board space.

Replacement Considerations

Consult the manufacturer's official cross-reference guide for verified substitute part numbers. Do not assume functional equivalence based on similar specifications alone.

FAQ

How is the power-down function controlled?

The PD pin controls the power-down state. In a 5 V system, the amplifier is disabled when the PD pin voltage is below 2 V and enabled when above 3.75 V.

Can the gain be adjusted externally?

No, the gain is fixed internally at +2. External configurations can create effective gains of +1, -1, +3, +4, or +5 by cascading the internal amplifiers.

What is the input common-mode voltage range?

The input common-mode voltage range extends from 0.2 V below the negative supply rail to 1 V below the positive supply rail.