Diodes Incorporated PI7VD9008HFDEX

Overview

PI7VD9008HFDEX from Diodes Incorporated (acquired Pericom) is an 8-channel analog video decoder IC with integrated 10-bit audio ADCs and ITU-R BT.656 digital video output, designed for multi-camera security DVRs requiring D1 (720×480/576) and 960H (960×480/576) resolution support using a single 27 MHz crystal clock. It features proprietary sync-tip detection, 5H adaptive comb filtering, and differential CMOS analog front-end per channel.

For engineers reviewing the PI7VD9008HFDEX datasheet, PI7VD9008HFDEX pinout, PI7VD9008HFDEX application, or PI7VD9008HFDEX equivalent, key selection criteria include composite video input robustness (min. 80 mV), programmable luminance peaking, dual serial audio interface (I2S/DSP), BT.656 timing compliance, and power-down mode current draw.

Technical Context

The PI7VD9008HFDEX implements a fully differential analog signal path per channel with clamping, AGC, and 5H adaptive comb filters to separate luma/chroma and suppress cross-luma and cross-chroma artifacts. Its video PLL generates precise 108 MHz pixel clocks for BT.656 output at 27/54/108 MHz or 36/72/144 MHz options.

Audio processing includes ten independent 10-bit ADCs, one DAC, mixed analog output, and configurable I2S/DSP serial interfaces operating at 8/16/32/44.1/48 kHz sample rates. Sync-tip detection operates reliably under noise from cameras, power adapters, and long coaxial cables.

Key Specifications

Pinout & Package

PI7VD9008HFDEX is housed in a 128-pin LQFP package (20 mm × 20 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments are validated per Diodes Incorporated datasheet DS42444 (Rev. 1, May 2021).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-channel analog video decoding applications.

Compared with ADV7180WSTZ and TC90216FNG, PI7VD9008HFDEX uniquely integrates 8-channel decode, 10-bit audio ADCs, and 960H support in one LQFP package-reducing system-level component count, power, and layout complexity for next-gen analog CCTV platforms.

Availability

PI7VD9008HFDEX is available at Aetrix Electronics and suitable for security DVR systems, automotive infotainment modules, and broadcast video capture cards requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for PI7VD9008HFDEX 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with broad distribution and manufacturing scale across Asia, North America, and Europe.

The PI7VD9008HFDEX belongs to Diodes' legacy Pericom video interface product line, engineered specifically for analog-to-digital conversion in multi-channel surveillance and broadcast equipment where signal integrity under electrical stress is critical.

FAQ

What video standards does PI7VD9008HFDEX support with a single 27 MHz clock?

PI7VD9008HFDEX supports NTSC(M), NTSC 4.43, PAL(B/D/G/H/I/M/Nc), and PAL60 using only a 27.0 MHz crystal reference. Its internal PLL and video timing engine eliminate the need for multiple clock sources or external frequency synthesizers, simplifying system design and reducing jitter-sensitive layout constraints.

How does the 5H adaptive comb filter improve image quality compared to fixed 2H or 3H filters?

The 5H adaptive comb filter dynamically adjusts its coefficients based on motion and spatial content, significantly reducing cross-luma and cross-chroma artifacts without introducing motion halos or false color. Unlike fixed filters, it preserves fine detail in static scenes while suppressing dot crawl in moving objects-critical for license plate readability in DVR applications.

Can PI7VD9008HFDEX operate in black-and-white mode during weak signal conditions?

Yes. When composite input amplitude falls below reliable color decoding thresholds, PI7VD9008HFDEX automatically switches to monochrome mode using luminance-only processing. This maintains usable video output during cable degradation or camera power fluctuations-ensuring continuous recording even under marginal signal conditions.

What is the function of the built-in audio digital controller?

The audio digital controller manages all serial audio I/O: it generates I2S/DSP outputs for recording/mixing from the ten 10-bit ADCs, and accepts playback input streams for the integrated DAC. It handles sample rate alignment, channel mapping, and master/slave clocking-enabling seamless integration with audio DSPs or SoCs without external glue logic.