Analog Devices Inc. ADA4432-1WBRJZ-R2

Overview

ADA4432-1WBRJZ-R2 from Analog Devices is a single-ended SD video filter amplifier with integrated short-to-battery (STB) and short-to-ground (STG) protection, designed for automotive rearview camera signal conditioning. It delivers 2 V/V fixed gain, −3 dB bandwidth of 10.5 MHz, 0.1 dB flatness to 3.3 MHz, and operates from 2.6 V to 3.6 V supply. Its STB flag output enables wire diagnostics in harsh 12 V/24 V battery environments.

For engineers reviewing the ADA4432-1WBRJZ-R2 datasheet, ADA4432-1WBRJZ-R2 pinout, ADA4432-1WBRJZ-R2 application, or ADA4432-1WBRJZ-R2 equivalent, this page provides verified functional role, automotive-grade protection behavior, video-filter performance metrics, thermal and power-down specifications, and real-world interface constraints - all confirmed for the WBRJZ-R2 variant (8-lead LFCSP, −40°C to +125°C).

Technical Context

The ADA4432-1WBRJZ-R2 implements a fifth-order low-pass reconstruction filter optimized for NTSC/PAL baseband video, with fixed 2 V/V gain and 10.5 MHz small-signal −3 dB bandwidth. Its STB protection circuit disconnects outputs within 150 ns when voltage exceeds +VS by >300 mV, tolerating up to 18 V on OUT while maintaining functionality during fault conditions.

It features an internal 200 mV output offset to support ground-referenced DAC inputs in single-supply systems, and integrates an ENA pin enabling ultralow 14 µA typical disabled current. The STB logic output (VOH = 3.3 V, VOL = 0.02 mV) provides fault indication independent of enable state, supporting diagnostic logging in ECU designs.

Key Specifications

Pinout & Package

ADA4432-1WBRJZ-R2 is housed in an 8-lead, 3 mm × 3 mm LFCSP package with exposed pad (EPAD) for thermal and electrical grounding. Pin 1 and Pin 5 are no-connect (NC); EPAD must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video filter amplifier applications.

Compared with ADA4432-1WBRJZ-R2, the ADA4432-1WYRJZ-R7 offers identical performance in volume-ready packaging, while the MAX4019ETA+T trades STB robustness and lower power for broader general-purpose availability - making the R2 variant optimal for AEC-Q100-compliant rearview camera designs requiring diagnostic flagging and transient resilience.

Availability

ADA4432-1WBRJZ-R2 is available at Aetrix Electronics and suitable for automotive rearview camera modules, video ECUs, and industrial surveillance systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.

Supply support for ADA4432-1WBRJZ-R2 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 Wilmington, MA.

The ADA4432-1WBRJZ-R2 belongs to Analog Devices' automotive-qualified video reconstruction filter product line, engineered specifically for robust SD video signal conditioning in electrically noisy, thermally demanding vehicle environments.

FAQ

What is the function of the STB pin on the ADA4432-1WBRJZ-R2?

The STB (short-to-battery) pin on the ADA4432-1WBRJZ-R2 is an open-drain logic output that asserts high (3.3 V) when the OUT pin experiences a voltage exceeding +VS by ~300 mV - indicating an active short-to-battery fault. It remains functional whether the device is enabled or disabled, enabling real-time wire diagnostics in automotive ECUs without interrupting video path operation. The ADA4432-1WBRJZ-R2's STB response time is 150 ns, allowing rapid fault capture.

Does the ADA4432-1WBRJZ-R2 require external coupling capacitors?

No, the ADA4432-1WBRJZ-R2 supports true DC-coupled operation on both input and output due to its internal 200 mV output offset and rail-to-rail input voltage range (0–1.4 V). This eliminates the need for external AC-coupling capacitors typically required by legacy video amplifiers, reducing BOM cost, board space, and low-frequency phase shift. The ADA4432-1WBRJZ-R2 is explicitly designed for ground-referenced DAC interfaces in single-supply automotive systems.

What is the maximum output current capability of the ADA4432-1WBRJZ-R2?

The ADA4432-1WBRJZ-R2 delivers ±37 mA linear output current into 150 Ω loads and sustains ±50 mA short-circuit current without damage. This ensures reliable driving of doubly terminated coaxial cables (75 Ω source + 75 Ω load) while maintaining video fidelity. The output stage includes short-to-ground protection that limits sink/source current to prevent thermal runaway during sustained faults - a critical feature validated under AEC-Q100 stress testing for the ADA4432-1WBRJZ-R2.

Can the ADA4432-1WBRJZ-R2 operate from a 2.8 V supply?

Yes, the ADA4432-1WBRJZ-R2 is fully specified and guaranteed to operate across 2.6 V to 3.6 V, including 2.8 V. At 2.8 V, it maintains 10.5 MHz −3 dB bandwidth, 0.38% differential gain error, and 7.6 mA typical quiescent current. Its PSRR of −63 dB at dc ensures immunity to supply ripple common in automotive 2.8 V LDO outputs, making the ADA4432-1WBRJZ-R2 suitable for low-voltage domain integration in modern vehicle architectures.

How does the ENA pin affect power consumption in the ADA4432-1WBRJZ-R2?

When the ENA pin is pulled low, the ADA4432-1WBRJZ-R2 enters ultra-low-power shutdown mode with 14 µA typical quiescent current - reducing system standby power by >99% versus active operation (7.6 mA). The ENA pin is internally pulled up to +VS, so leaving it unconnected enables normal operation. This feature allows precise control of video path power in parking-mode camera systems, where the ADA4432-1WBRJZ-R2 can be disabled between frames to conserve energy without sacrificing wake responsiveness.