ADV7197KS - Triple 11-Bit HDTV Video DAC | Analog Devices
料号： ADV7197KS ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADV7197KS 概述
A video DAC is a semiconductor that converts digital pixel or component-video data into analog voltage or current signals for display, broadcast, projection, and video-processing equipment. The ADV7197 belongs to the broader digital-to-analog converter hierarchy, which includes video DACs, audio DACs, interface ICs, and signal-conversion semiconductors. In an HDTV signal chain, it bridges a digital video processor and an analog video output stage.
Key features include three 11-bit DAC channels, support for 10-bit 4:4:4 YCrCb or RGB inputs, 10-bit 4:2:2 YCrCb input, programmable output modes, and operation from a +5 V or +3.3 V supply. The converter accepts HDTV data at 74.25 MHz or 74.1758 MHz, and its asynchronous timing mode accommodates other high-definition standards based on SMPTE274M or SMPTE296M.
Technically, the ADV7197 integrates three separate high-speed video D/A converters with TTL-compatible inputs. Serial control over the bidirectional I2C port configures modes, while separate analog outputs support standard component-video generation. The architecture is intended for multimedia systems where multiple synchronized analog channels are required from one digital source.
Typical applications include HDTV displays, projection systems, digital video equipment, high-resolution color graphics, image-processing systems, and instrumentation. In each case, the device serves as the final digital-to-analog conversion stage after video compression, scaling, or color processing.
A key design consideration is signal integrity. The high-speed digital inputs, analog current outputs, clocking, and control bus require careful PCB partitioning and return-path planning. Designers should also preserve the device's specified supply range, input timing, output-current configuration, and external video-network implementation rather than assuming generic DAC pinout conventions.
This page combines manufacturer specifications, observed distributor pricing, verified lifecycle information, and engineering selection guidance. It also distinguishes exact package/order variants from broader functional alternatives so obsolete designs can be migrated without conflating compatibility with mere feature similarity.
直接替换替代料： ADV7197KS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ADV7197KSZ
✅ 直接替换📋 参考替代料（不在目录中）
ADV7197KSTZ
✅ 直接替换📋 参考替代料（不在目录中）
ADV7197KST
✅ 直接替换📋 参考替代料（不在目录中）
ADV7393BCPZ-REEL
✅ 直接替换✓ 有现货
$6.2 / 个
查看数据手册 →ADV7393BCPZ-REEL
✅ 直接替换✓ 有现货
$6.2 / 个
查看数据手册 →ADV7197KS 最大额定值与电气特性
| 暂无规格参数 |
ADV7197KS standard 引脚配置指南
ADV7197KS（standard 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： ADV7197KS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADV7197KS 适用于 6 应用s: HDTV Display Systems, Projection Systems, Digital Video Processing Equipment, High-Resolution Color Graphics, Image Processing Test Equipment, Broadcast and Video Instrumentation.
HDTV Display Systems
The ADV7197KS fits an HDTV display output stage because it combines three 11-bit DACs with 10-bit YCrCb and RGB input paths. According to the Analog Devices ADV7197 product information, the device accepts 4:4:4 YCrCb, 4:4:4 RGB, and 4:2:2 YCrCb data and provides EIA770.3-compatible component-video outputs. It is positioned after digital scaling, decompression, or color processing, where three synchronized analog channels are required. Programmable modes through the bidirectional I2C interface help match the source timing, while the +5 V or +3.3 V supply options support different legacy display architectures. In a maintenance redesign, reuse is most practical when the existing board already provides the validated analog output network and the original 52-pin PQFP layout.
推荐
Projection Systems
The ADV7197KS is suitable for projection systems that require simultaneous generation of three component-video outputs from a digital video source. Its three 11-bit video DAC channels, supported 74.25 MHz and 74.1758 MHz HDTV data rates, and EIA770.3-compatible output behavior align with legacy multimedia projection architectures. The converter can accept 10-bit YCrCb or RGB data and is configured over the serial bidirectional I2C port. Output currents of 4.33 mA and 2.66 mA provide selectable drive conditions for the external video network, although the exact resistor, termination, and cable-driver implementation must follow the manufacturer reference design. Obsolete lifecycle status makes it most appropriate for sustaining an existing projector rather than starting a fresh platform.
推荐
Digital Video Processing Equipment
The ADV7197KS can form the analog output boundary of a legacy digital video processor because it accepts three 10-bit input ports covering 4:4:4 YCrCb, RGB, and 4:2:2 YCrCb data. Its integrated triple 11-bit DAC architecture replaces separate component-video output converters while preserving programmable operating modes. The serial bidirectional I2C control path allows a system controller to configure the converter and verify operating state, making the part useful in video switching, frame conversion, color processing, and test-generation equipment. For industrial or broadcast-adjacent installations, engineers should pay particular attention to clock jitter, return paths, analog ground partitioning, and synchronization because these constraints are not replaced merely by matching the IC order number.
推荐
High-Resolution Color Graphics
The ADV7197KS is applicable to high-resolution color graphics systems requiring RGB-to-analog conversion. It accepts 10-bit 4:4:4 RGB and provides three synchronized 11-bit DAC outputs, allowing a digital graphics source to drive analog display equipment. The supported input clocks of 74.25 MHz and 74.1758 MHz cover common high-definition timing, while asynchronous timing mode accommodates other standards based on SMPTE274M or SMPTE296M according to the verified product description. A new design must account for the device being obsolete and for the difference between digital pixel cadence and analog video timing. Existing graphics platforms benefit most when the converter sits behind a compatible frame buffer and the original analog termination network is retained.
推荐
Image Processing Test Equipment
The ADV7197KS can support image-processing test equipment that must generate known analog video outputs from digital test patterns or processed imagery. Its three independently addressed 11-bit DAC channels provide matched Y, Cb, and Cr or R, G, and B outputs, while programmable modes through the bidirectional I2C interface allow the host controller to configure operating states. The converter therefore fits an instrument that evaluates displays, converters, and downstream video chains. The usable resolution, timing, and amplitude depend on the source clock, firmware configuration, and external output network, not on the DAC bit count alone. Calibration routines should include offset and gain checks for all three channels because matching outputs are essential when the instrument is used for signal-quality comparison.
推荐
Broadcast and Video Instrumentation
The ADV7197KS is suitable for specialized broadcast and video instrumentation where digital YCrCb data must be converted into EIA770.3-compatible component video for monitoring or analysis. The triple 11-bit architecture allows all three color-difference components to be generated coherently, while 4:2:2 and 4:4:4 input support broadens compatibility with test sources. Its +5 V or +3.3 V operation and I2C mode control make it practical in compact instrument designs built around the original ADV7197 ecosystem. Because the converter is obsolete, long-lived professional equipment may require careful stock planning, date-code traceability, and periodic functional screening. Signal-integrity validation should include rise-and-fall behavior at the supported clock rates and inspection of analog outputs under the intended termination conditions.
推荐
推荐产品汇总
工程参考数据： ADV7197KS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADV7197KSZ | ADV7197KSTZ | ADV7197KST | ADV7393BCPZ | ADV7393BCPZ-REEL |
|---|---|---|---|---|---|---|
| Package | 52-pin PQFP | PQFP-52 | PQFP-52 | PQFP-52 | PQFP-52 | PQFP-52 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Product Type | Triple high-speed video DAC and HDTV encoder | ADV7197 family variant | ADV7197 family variant | ADV7197 family variant | ADV video-DAC family candidate | ADV video-DAC family candidate |
关键差异点
- Established ADV7197-specific HDTV conversion function （对比 ADV7393BCPZ)
- Triple 11-bit output resolution （对比 ADV7197KSZ)
- Bidirectional I2C mode control （对比 ADV7197KSTZ)
- Documented support for three legacy digital-video formats （对比 ADV7393BCPZ-REEL)
设计说明
Separate the high-speed digital inputs from the analog video outputs and provide continuous return paths for clocks and data. Route the Y, Cb, and Cr channels with matched geometry, keep the I2C wiring away from sensitive output nodes, and place decoupling and output-network components close to their associated pins. Because the verified data does not provide a complete pin map, do not infer capacitor locations or routing from generic 52-pin PQFP examples; use the manufacturer reference design and exact pinout.
Validate timing at the supported 74.25 MHz and 74.1758 MHz HDTV data rates, including skew between the three input buses and clock jitter margin. Keep digital return currents on continuous planes and avoid stubs on clock or data nets. Use the asynchronous timing mode only when the source standard is compatible with SMPTE274M or SMPTE296M as stated in the manufacturer information, and verify output settling through the actual termination network rather than relying only on nominal converter resolution.
Do not treat a related order suffix as a drop-in substitute without checking the ADV7197 ordering table, temperature grade, and lead-finish designation. The verified data identifies ADV7197KS as obsolete and links ADV7197KSZ and ADV7197KSTZ as alternatives, but it does not provide a complete parameter-by-parameter comparison. For maintenance purchases, confirm the exact MPN, traceability, date code, condition, and return rights before relying on the reported legacy inventory.
Design the supply network for the explicitly supported +5 V or +3.3 V operating options and follow the manufacturer datasheet for decoupling and output-mode dependencies. Place each decoupling capacitor adjacent to its supply pin with a short ground return, and keep analog and digital supply paths controlled according to the reference design. Do not infer quiescent current, output-voltage tolerance, or allowable supply combinations from the supplied snippets because those values are marked as unavailable rather than estimated.
合规信息
The verified data identifies ECCN EAR99 and Singapore country of origin but does not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 evidence. The AEC-Q100 field is not applicable because this is a video interface IC rather than an automotive-qualified device, and no automotive qualification is documented.
