ADA4432-1BRJZ-R7

Overview

The ADA4432-1BRJZ-R7 is a single-ended SD video filter amplifier from Analog Devices, designed for automotive environments. It integrates a fifth-order low-pass reconstruction filter with fixed gain of 6 dB (2 V/V). Key electrical parameters include a -3 dB bandwidth of 10.5 MHz and 45 dB rejection at 27 MHz. The device operates on a single supply voltage ranging from 2.6 V to 3.6 V, drawing a typical quiescent current of 7.6 mA. It features short-to-battery protection up to 18 V and an output flag for diagnostics.

Feature Summary

• Integrates overvoltage protection against short-to-battery conditions up to 18 V and short-to-ground protection.
• Includes a dedicated short-to-battery output flag pin for wire diagnostics and fault indication.
• Provides high-order filtering with excellent flatness and out-of-band rejection suitable for SD video standards.
• Features ultralow power-down current capability via the enable/disable control pin.

Applications

• Automotive rearview camera systems
• Automotive video electronic control units (ECUs)
• Surveillance video systems

Procurement Notes

Verify that the BRJZ suffix corresponds to the specific tape and reel packaging configuration required for automated assembly. Confirm the component meets AEC-Q100 qualification requirements if deploying in automotive applications. Ensure the ordering code matches the single-ended output variant rather than the differential version.

Selection Notes

Select this component when a single-ended output is required for driving back-terminated cables or pseudo-differential lines. Choose this part over the ADA4433-1 if differential signal processing is not needed. Consider the small LFCSP package size for space-constrained PCB layouts in harsh automotive environments.

Part Context

This component belongs to the ADA4432/ADA4433 family of SD video filter amplifiers. It shares core specifications with the ADA4433-1 but differs in having a single-ended output architecture instead of fully differential outputs. Both variants share identical protection features and filter characteristics.

Replacement Considerations

The ADA4432-1BCPZ-R7 is a pin-compatible alternative within the same family offering identical functional performance in a different package style.

FAQ

How does the device handle short-to-battery faults?

The device isolates internal circuitry from overvoltages up to 18 V and disconnects the output devices. An STB pin provides a logic high flag to indicate the fault condition.

What is the purpose of the ENA pin?

The ENA pin controls the device state. Pulling it low disables the amplifier to reduce quiescent current to approximately 13.5 µA, while leaving it floating or high enables normal operation.