Analog Devices Inc. ADV7179KCP

Overview

ADV7179KCP from Analog Devices is a single-chip PAL/NTSC video encoder IC that converts 8-bit CCIR-656 YCrCb digital video into analog composite (CVBS), S-video (Y/C), and RGB/YPbPr outputs. It integrates three 10-bit DACs, a 32-bit DDS for subcarrier generation, SSAF™ filtering, CGMS-A, WSS, and programmable luma/chroma filters - enabling studio-grade video playback in portable digital still cameras and mobile phones.

For engineers reviewing the ADV7179KCP datasheet, ADV7179KCP pinout, ADV7179KCP application, or ADV7179KCP equivalent, key selection considerations include its 27 MHz single-clock operation, 40-lead 6 mm × 6 mm LFCSP package, −40°C to +85°C temperature range at 3.3 V, AEC-Q100 qualification, and support for simultaneous composite + S-video output with individual DAC on/off control.

Technical Context

The ADV7179KCP implements a fully integrated data path: CCIR-656 4:2:2 pixel input is demultiplexed, interpolated, filtered via programmable FIR luma (NTSC/PAL low-pass, notch, SSAF, CIF, QCIF) and chroma (0.65–2.0 MHz low-pass, CIF, QCIF) filters, then modulated using a 32-bit direct digital synthesizer for precise subcarrier frequency/phase control. All timing-including HSYNC, FIELD/VSYNC, and BLANK-is generated on-chip or synchronized externally via real-time control (RTC) mode.

It supports multimode main/subordinate operation with programmable pipeline delay (5–48 clock cycles), subcarrier reset via SCRESET/RTC pin, and vertical blanking interval (VBI) data insertion for WSS, CGMS, teletext (PAL-WST), and closed captioning - all configurable via a 2-wire I²C-compatible MPU interface operating up to 400 kHz.

Key Specifications

Pinout & Package

The ADV7179KCP is housed in a 40-lead, 6 mm × 6 mm LFCSP package with exposed thermal pad (EPAD) soldered to PCB ground for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADV7174KCP, ADV7179KCP removes Macrovision licensing complexity and cost while retaining full video encoding capability; versus THS8200IPHP, it delivers superior broadcast compliance, integrated timing, and feature-rich VBI handling - making it optimal for portable, automotive, and industrial applications requiring standards adherence and configurability.

Availability

ADV7179KCP is available at Aetrix Electronics and suitable for portable digital still cameras, mobile handsets, and automotive rear-view displays requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified parts.

Supply support for ADV7179KCP 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 is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving industrial, automotive, communications, and consumer markets with precision signal processing solutions.

The ADV7179KCP belongs to Analog Devices' ADV717x video encoder family, designed specifically for low-power, multistandard analog video output in space-constrained portable and automotive systems - emphasizing integration, broadcast compliance, and flexible timing control.

FAQ

What video standards does the ADV7179KCP support?

The ADV7179KCP supports NTSC M, PAL N2, PAL B/D/G/H/I, PAL-M3, and PAL 60 standards. It handles both NTSC and PAL square pixel modes using 24.5454 MHz (NTSC) or 29.5 MHz (PAL) clocks. The ADV7179KCP does not support Macrovision - that feature is exclusive to the ADV7174KCP variant. All supported standards are implemented with full compliance to ITU-R BT.601/BT.656 and include programmable pedestal, burst, and sync structures.

Does the ADV7179KCP require external filters for analog output?

No, the ADV7179KCP includes fully programmable on-chip digital FIR filters for both luma (NTSC/PAL low-pass, notch, SSAF, CIF, QCIF) and chroma (0.65–2.0 MHz low-pass, CIF, QCIF), eliminating the need for external analog reconstruction filters. An external 0.1 µF capacitor on the COMP pin is required for DAC stability, but no RC or LC filter components are needed at the DAC outputs for standard 75 Ω video loads.

How is timing synchronization handled in the ADV7179KCP?

The ADV7179KCP supports both main (generator) and subordinate (slave) timing modes. In main mode, it generates all HSYNC, FIELD/VSYNC, and BLANK signals internally. In subordinate mode, it accepts these signals via dedicated I/O pins and locks to incoming timing - including real-time subcarrier control (RTC) for line-by-line compensation when connected to compatible decoders like the ADV7183A. The ADV7179KCP uses its internal 32-bit DDS to maintain precise subcarrier phase alignment regardless of mode.

Can the ADV7179KCP output multiple video formats simultaneously?

Yes, the ADV7179KCP can generate composite (CVBS) and S-video (Y/C) outputs simultaneously, or CVBS and RGB/YPbPr - all from the same YCrCb input stream. Each of the three 10-bit DACs (DAC A, DAC B, DAC C) is independently configurable and power-controllable. For example, DAC A can drive CVBS, DAC B drives Y, and DAC C drives C - enabling true concurrent dual-format output without external multiplexing.

What is the purpose of the SCRESET/RTC pin on the ADV7179KCP?

The SCRESET/RTC pin on the ADV7179KCP serves two mutually exclusive functions selected via Mode Register 2 bits MR22/MR21: as a subcarrier reset input (low-to-high transition forces subcarrier to Field 0), or as a real-time control (RTC) input for automatic line-by-line subcarrier frequency adjustment when locked to an external video source. This dual functionality enables precise field alignment in broadcast systems or adaptive timing in cascaded decoder-encoder chains - both critical for artifact-free video in professional and automotive applications.