Diodes Incorporated ZXFV4583EV

Overview

ZXFV4583EV from Zetex Semiconductors is an evaluation board designed to validate the ZXFV4583 sync separator IC and ZXFV4089 DC restoration video amplifier in analog composite video systems. It supports 51 Ω or 75 Ω source impedance via R1 reconfiguration, provides BNC input/output with 50 Ω test instrumentation interface, and delivers -13.9 dB overall gain in 50 Ω systems using a 150 Ω internal load network.

For engineers reviewing the ZXFV4583EV datasheet, ZXFV4583EV pinout, ZXFV4583EV application, or ZXFV4583EV equivalent, this board enables rapid functional verification of sync separation timing accuracy, back porch–controlled black-level stabilization, color burst filtering configuration, and video signal integrity under lab-grade test conditions.

Technical Context

The board implements a complete analog video signal path: incoming composite video enters via BNC, is AC-coupled to both U1 (ZXFV4583) and U2 (ZXFV4089), and routes through configurable color burst filter links (LK1/LK2) on header PL2. Test point TP2 monitors filtered burst output.

Synchronized logic outputs from ZXFV4583 are accessible at header H1; ZXFV4089 uses the ZXFV4583's back porch signal to dynamically clamp video black level. Gain is set to +2 (6.02 dB) by R7/R8, with 19.92 dB attenuation in the output matching network yielding net -13.9 dB in 50 Ω systems.

Key Specifications

Availability

ZXFV4583EV is available at Aetrix Electronics and suitable for analog video test bench validation, broadcast equipment prototyping, legacy CCTV system development, and composite video signal integrity analysis requiring stable component supply and documented reference design fidelity.

Supply support for ZXFV4583EV 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

Zetex Semiconductors plc was a UK-based designer of high-performance analog and mixed-signal semiconductors, acquired by Diodes Incorporated in 2008. Known for precision video, power management, and interface ICs.

ZXFV4583EV belongs to Zetex's video signal conditioning evaluation platform family, developed specifically to accelerate design-in of sync separators and DC restoration amplifiers in professional and industrial analog video applications.

FAQ

What video standards does the ZXFV4583EV support?

The board supports standard-definition composite video signals including NTSC, PAL, and SECAM, as confirmed by its use of the ZXFV4583 - a sync separator specified for 525-line and 625-line systems with horizontal/vertical sync extraction and color burst detection compliant with ITU-R BT.470 and EIA-170.

Can the ZXFV4583EV be used with 75 Ω video sources?

Yes - the board includes resistor R1 (51 Ω default) that can be replaced with a 75 Ω resistor to match standard broadcast video source impedance, enabling accurate signal integrity testing without external termination adapters or mismatch-induced reflections.

How is the color burst filter configured on this board?

Configuration is achieved via two jumper links (LK1 and LK2) on double-row header PL2: connecting LK1 between pins 1–6 and LK2 between pins 4–5 enables internal burst filtering; swapping to LK1 (2–5) and LK2 (3–4) bypasses the filter entirely, routing video directly to the ZXFV4089 amplifier.

What is the purpose of test point TP2?

TP2 provides direct access to the output of the ZXFV4583's internal color burst filter, allowing oscilloscope measurement of burst amplitude, timing alignment, and waveform fidelity - critical for verifying proper clamping reference generation before feeding the back porch signal to the ZXFV4089 DC restoration amplifier.