Analog Devices Inc. ADV7195KS

Overview

ADV7195KS from Analog Devices is a triple 11-bit digital-to-analog video encoder IC for progressive scan and HDTV applications. It accepts 10-bit YCrCb (4:2:2 or 4:4:4) or RGB inputs at up to 74.25 MHz, outputs analog YPrPb compliant with EIA-770.1/770.2/770.3 and RS-170/RS-343A, features programmable sharpness and adaptive filtering, and operates from a single 3.3 V supply in a 52-lead MQFP package.

For engineers reviewing the ADV7195KS datasheet, ADV7195KS pinout, ADV7195KS application, or ADV7195KS equivalent, this page delivers verified functional identity, confirmed DAC resolution and output standards, validated timing modes (27 MHz/74.25 MHz), exact pin roles per datasheet Table 1, and two technically documented alternative encoders for multiformat video system design.

Technical Context

The ADV7195KS implements a dual-path digital video processing architecture: one path handles 4:2:2 chroma interpolation via SSAF (Scalable Sample Adaptive Filter) for bandwidth-efficient chroma reconstruction, while the other supports direct 4:4:4 input bypassing SSAF. Its internal timing generator synchronizes analog output generation using external HSYNC/VSYNC or embedded EAV/SAV codes.

It integrates three independent DAC channels - DAC A (11-bit + sync) for luminance, DAC B and DAC C (11-bit each) for color components - with programmable gamma correction (two curves), Y/CrCb delay control (up to 4 clock cycles), and CGMS-A insertion capability for copy protection in 525p systems.

Key Specifications

Pinout & Package

ADV7195KS is housed in a 52-lead plastic quad flatpack (MQFP) with gull-wing leads, JEDEC MO-118 compliant, body size 10.0 mm × 10.0 mm × 1.7 mm, lead pitch 0.65 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADV7195KS, ADV7193KSZ reduces functionality to luminance-only encoding with no chroma processing, while THS8200IPFP trades broadcast-specific features (SSAF, CGMS-A, EIA-770 compliance) for higher RGB clock support and PC-centric timing flexibility.

Availability

ADV7195KS is available at Aetrix Electronics and suitable for professional broadcast monitors, HDTV projection systems, digital video instrumentation, and multiformat video test equipment requiring stable component supply across extended production lifecycles.

Supply support for ADV7195KS 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 Norwood, MA.

The ADV7195KS belongs to Analog Devices' video encoder product line, designed specifically for high-fidelity conversion of digital video (YCrCb/RGB) into analog formats compliant with broadcast, professional, and industrial video standards.

FAQ

What video standards does the ADV7195KS support for analog output?

The ADV7195KS supports EIA-770.1 and EIA-770.2 for YPrPb progressive scan output, EIA-770.3 for YPrPb HDTV output, and RS-170/RS-343A for RGB output. These standards cover 525p, 625p, 720p, and 1080i formats. Output compliance depends on RSET value (2470 Ω for EIA-770.x, 2820 Ω for RS-170/RS-343A) and register configuration via the I²C interface. The ADV7195KS does not support NTSC/PAL composite output.

Does the ADV7195KS require an external voltage reference?

Yes, the ADV7195KS requires an external 1.235 V reference applied to the VREF pin for optimal DAC performance, though it can also output this reference. The datasheet specifies VREF tolerance as ±0.123 V (1.112 V to 1.359 V). Using the internal reference alone is not supported; an external precision reference or dedicated reference IC (e.g., ADR3412) is mandatory to achieve specified INL/DNL and full-scale current accuracy in ADV7195KS designs.

How does the SSAF (Scalable Sample Adaptive Filter) function in the ADV7195KS?

The SSAF in the ADV7195KS performs 4:2:2 → 4:4:4 chroma interpolation exclusively in 4:2:2 input mode, delivering a flat 0 dB passband response up to 6.75 MHz without phase distortion or aliasing. It is bypassed in 4:4:4 mode. The filter operates on Cb/Cr data received at pins Cb/Cr0–Cb/Cr9 and is enabled automatically when MR11 = 0 (4:2:2 format selected). No external components are needed - the SSAF is fully integrated and calibrated within the ADV7195KS silicon.

Can the ADV7195KS generate test patterns without external video input?

Yes, the ADV7195KS includes an internal test pattern generator capable of producing programmable crosshatch (white lines on black background) or uniform solid-color fields. Pattern selection, color values, and frame/hatch mode are controlled via I²C registers MR12–MR13 and CY/CCR/CCB registers. This feature allows full validation of DAC outputs, analog signal chain, and display timing without requiring an external video source - a key capability for ADV7195KS-based evaluation and production test setups.

What is the purpose of the ALSB pin on the ADV7195KS?

On the ADV7195KS, the ALSB pin configures the I²C interface bandwidth: when tied high, it activates an internal noise filter that blocks pulses <50 ns, improving robustness in electrically noisy environments; when tied low, it enables full-bandwidth I²C operation for faster register access. This pin directly controls the input stage of the SCL/SDA receivers and must be set at power-up - its state cannot be changed dynamically via software. The ALSB setting affects only the I²C port, not video signal integrity or DAC performance.