ADA4830-1BCPZ-R2

Overview

The ADA4830-1BCPZ-R2 is a monolithic high-speed difference amplifier featuring integrated input short-to-battery protection up to 18 V. It operates on a single supply from 2.9 V to 5.5 V with a quiescent current of 6.8 mA per channel. The device provides a fixed differential gain of 0.50 V/V and supports a −3 dB bandwidth of 84 MHz at 5 V. It includes an enable pin, a short-to-battery output flag, and operates within a temperature range of −40°C to +125°C.

Feature Summary

• Integrates input overvoltage (short-to-battery) protection capable of withstanding up to 18 V on input pins.
• Provides a dedicated logic output flag to indicate overvoltage conditions for wire diagnostics.
• Features an enable pin allowing the device to be disabled for low power consumption.
• Designed for accurate reproduction of CVBS video signals while rejecting common-mode error voltages.

Applications

• Automotive vision systems
• Automotive infotainment
• Surveillance systems

Procurement Notes

Verify the specific suffix R2 against official documentation to confirm reel packaging details. Ensure compatibility with the LFCSP package dimensions and thermal requirements. Confirm that the automotive qualification status aligns with project specifications, as standard and W versions may differ in testing protocols.

Selection Notes

Select this component when designing receivers for differential or pseudo-differential CVBS signals in noisy environments. It is suitable for applications requiring direct connection to remote video sources without series capacitors. Consider the fixed 0.50 V/V gain for compatibility with video decoders requiring inputs of 1 V p-p or less.

Part Context

The ADA4830-1 is part of a family of monolithic high-speed difference amplifiers designed for harsh environments. It combines speed and precision to handle high-speed video signals. The device utilizes a 3 mm × 3 mm LFCSP package to save space. It is intended for use where robust input protection and high common-mode rejection are critical.

Replacement Considerations

The ADA4830-2W is a dual-channel version of the same family. Verify if the dual-channel configuration meets system requirements. Check if the standard ADA4830-1 variant offers sufficient performance differences for the application.

FAQ

How does the device protect against input overvoltage?

The device employs fast switching circuitry to clamp and hold internal voltage nodes at a safe level when an input overvoltage condition is detected, allowing inputs to withstand up to 18 V.

What is the function of the STB pin?

The STB pin serves as a short-to-battery indicator output. A logic low indicates an overvoltage condition, while a logic high indicates normal operation.

Can the device operate with a floating VREF pin?

Yes, the VREF pin is internally biased to +VS/2 when left floating, setting the output DC bias voltage accordingly.