TMC22191KHC - Digital Video Encoder | onsemi | NTSC/PAL
MPN： TMC22191KHC ✓ 啟用中TMC22191KHC 概覽
A digital video encoder is a signal-processing integrated circuit that translates digital graphics or image data into conventional analog television signals. Within the broader semiconductor hierarchy, the TMC22191KHC belongs to the video encoder, interface IC, and signal-conversion markets. Its function connects a digital video source, such as a graphics controller or embedded display system, to displays or video equipment that accept composite or Y/C analog input.
The encoder matrixes accepted digital image data into luminance and chrominance components. Its digitally synthesized chrominance subcarrier is then modulated onto the color information, while separate interpolation paths process the luminance and chrominance signals at twice the pixel rate. Dedicated 10-bit D/A converters convert the digital video information into analog output levels, allowing simultaneous composite and Y/C S-VIDEO generation without external component selection or tuning.
Programmable timing supports adaptation to different input and television formats. According to the manufacturer datasheet information, the TMC22x91 family is compatible with SMPTE 170M NTSC and CCIR Report 624 PAL television standards, as well as PAL-M and NTSC-without-pedestal operation. The TMC22191 also supports a 30-color indexed overlay function, making it useful when graphics and text must be combined with a base video source.
Typical uses include industrial panel computers, video test equipment, digital signage, CCTV monitor interfaces, broadcast-production equipment, and embedded graphics systems requiring analog NTSC or PAL compatibility. It is particularly useful where an existing analog display remains in the design but the image source is digital and generated entirely in hardware.
Designers should verify the complete input timing, output standard, synchronization requirements, and analog output loading against the manufacturer datasheet before layout. PCB implementation requires careful routing of digital inputs and analog outputs, stable supply distribution, and suitable grounding. The video outputs should also be evaluated for the required termination, filtering, impedance, and connector routing of the target display.
This page combines verified manufacturer and distributor information with practical application guidance, comparison details, and purchasing data as of 2026-10-28. It also records where pin-level, electrical, lifecycle, and substitute-part information was not established by the supplied sources.
直接替換替代品，適用於 TMC22191KHC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TMC22191KHC （相同外形與佔位） — 差異在於 Package, Product Type, Timing Control.
TMC22091KHC
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查看資料表 →TMC22191KHC 規格
| Product Type | Digital Video Encoder and Layering Engine |
| Encoding Architecture | All-digital video encoding |
| Oscillator Requirement | Internal digital oscillators; no crystals required |
| Supported Input Formats | 24-bit and 15-bit GBR/RGB 444 |
| Additional Input Format | Color-indexed input supported |
| Overlay Color Count | 30 colors for TMC22191 |
| Timing Control | Fully programmable |
| Video Standards | SMPTE 170M NTSC and CCIR Report 624 PAL |
| Additional Video Standards | PAL-M and NTSC without pedestal |
| Video Outputs | Simultaneous composite and Y/C S-VIDEO outputs |
| Digital-to-Analog Resolution | 10 bit |
| Luminance Processing | Interpolated to twice the pixel rate |
| Chroma Processing | Interpolated to twice the pixel rate and modulated onto a digitally synthesized subcarrier |
| External Tuning | No external component selection or tuning required |
| 封裝 | 100-MQFP |
| Package Dimensions | 20 mm x 14 mm |
| 安裝類型 | Surface Mount |
TMC22191KHC 20 mm x 14 mm 腳位配置指南
TMC22191KHC（20 mm x 14 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TMC22191KHC.
請參閱 資料表 以查看完整腳位配置。
典型應用
TMC22191KHC 適用於 6 應用s: Industrial Panel PC Video Output, Digital Signage Controller, Video Test and Measurement Equipment, Embedded Graphics and Text Overlay, CCTV and Security Monitor Interface, Broadcast and Video Production Support.
Industrial Panel PC Video Output
The TMC22191KHC fits industrial panel computers that must drive a legacy NTSC or PAL monitor from an embedded graphics engine. Its all-digital encoder, programmable timing, and internal oscillators eliminate an external crystal and tuning network, while the 10-bit DAC paths generate composite and Y/C output without a discrete conversion stage. The 24-bit and 15-bit GBR/RGB 444 inputs provide flexible integration with graphics pipelines. Designers should still verify synchronization polarity, pixel timing, analog impedance, and the display's input bandwidth before production. Because the supplied excerpts do not confirm the operating-temperature range or lifecycle commitments, industrial temperature and supply requirements must be checked against the complete manufacturer documentation.
推薦
Digital Signage Controller
The TMC22191KHC is useful in digital-signage controllers that need to combine generated RGB graphics with analog broadcast-style video. Its color-indexed input and 30 overlay colors support text, logos, or status information layered over a base image, while the simultaneous composite and Y/C outputs simplify connection to mixed display equipment. The internal digital oscillators and fully programmable timing reduce external support components. For a multi-screen installation, engineers should test video level, sync compatibility, and cable length because the available data does not specify output loading, jitter, or maximum display distance. The TMC22191KHC should be selected when analog NTSC/PAL compatibility is mandatory rather than optional.
推薦
Video Test and Measurement Equipment
The TMC22191KHC can serve as an all-digital composite-video source in test equipment, signal generators, and service analyzers. Programmable timing supports repeatable video generation, internal oscillators eliminate an external crystal, and the converter produces standard NTSC and PAL outputs rather than requiring a separate DAC board. The 24-bit and 15-bit RGB input paths also make the device suitable for automated image-pattern generation. Laboratory users should evaluate output amplitude, group-delay behavior, and synchronization accuracy against their test limits, because those detailed timing and analog parameters are not present in the supplied snippets. Verify connector impedance, ground strategy, and calibration procedures for the completed instrument.
推薦
Embedded Graphics and Text Overlay
The TMC22191KHC is appropriate for embedded systems that generate graphics locally and need to add indexed overlay information to an analog video output. Its 30-color overlay function is the principal feature distinguishing it from related TMC22x91 devices, and its 10-bit D/A converters support compact implementation without external video conversion ICs. The device accepts 15-bit or 24-bit GBR/RGB 444 data, allowing the overlay controller to share a graphics pipeline with the base image. Engineers must define overlay priority, transparency, palette behavior, and timing offsets in hardware because the verified excerpts do not document those register-level details. Confirm that the intended display accepts composite or Y/C signals before committing the board layout.
推薦
CCTV and Security Monitor Interface
The TMC22191KHC can bridge a digital graphics or annotation source to analog composite and Y/C equipment used in surveillance systems. The simultaneous outputs support a primary composite connection and a separate Y/C path where signal quality or legacy equipment requires it. Compatibility with NTSC, PAL, PAL-M, and NTSC without pedestal provides useful regional flexibility. Because security displays can differ significantly in sync and video-level expectations, the integrator should verify horizontal and vertical timing, pedestal handling, impedance, and cable termination against the target monitor. The supplied data does not establish operating-temperature limits or regulatory approvals, so outdoor use and other demanding environments require additional qualification.
推薦
Broadcast and Video Production Support
The TMC22191KHC is suited to legacy production, monitoring, and playback equipment that must accept computer-generated RGB and deliver standard analog television signals. Its fully digital encoding path and internal oscillators reduce analog tuning requirements, while SMPTE 170M NTSC and CCIR Report 624 PAL compatibility address common studio expectations. The 100-MQFP package offers a high pin count for digital image data, timing, configuration, power, and analog outputs, but the verified excerpts do not provide exact pin assignments or power requirements. Hardware engineers should therefore complete pin-level and schematic review from the manufacturer PDF before layout. Analog output filtering and grounding also need evaluation in the target broadcast-equipment enclosure.
推薦
推薦產品摘要
工程參考資料，適用於 TMC22191KHC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TMC22091KHC | TMC22191KHC | TMC22191KHC |
|---|---|---|---|---|
| Package | 100-MQFP (20 mm x 14 mm) | 100-MQFP (20 mm x 14 mm) | 100-MQFP (20 mm x 14 mm) | 100-MQFP (20 mm x 14 mm) |
| Brand | onsemi | onsemi | MaxLinear | Cadeka Microcircuits LLC |
| Product Type | Digital Video Encoder and Layering Engine | TMC22x91 Digital Video Encoder | Digital Video Encoder and Layering Engine | Digital Video Encoder and Layering Engine |
| Video Outputs | Simultaneous composite and Y/C S-VIDEO | Simultaneous composite and Y/C S-VIDEO | Simultaneous composite and Y/C S-VIDEO | Simultaneous composite and Y/C S-VIDEO |
| Crystal Requirement | None; internal digital oscillators | None; internal digital oscillators | None; internal digital oscillators | None; internal digital oscillators |
| Timing Control | Fully programmable | Fully programmable | Fully programmable | Fully programmable |
| Television Standards | SMPTE 170M NTSC; CCIR Report 624 PAL; PAL-M; NTSC without pedestal | SMPTE 170M NTSC; CCIR Report 624 PAL; PAL-M; NTSC without pedestal | SMPTE 170M NTSC; CCIR Report 624 PAL; PAL-M; NTSC without pedestal | SMPTE 170M NTSC; CCIR Report 624 PAL; PAL-M; NTSC without pedestal |
主要差異化特點
- Integrated color-indexed overlay capability (對比TMC22091KHC)
- Fully digital composite-video generation (對比TMC22091KHC)
- Simultaneous analog output paths (對比TMC22091KHC)
設計說明
Separate the high-speed digital image inputs from the composite and Y/C analog outputs when placing the TMC22191KHC. The 100-MQFP package provides separate digital and analog functions, but the supplied sources do not include a recommended land pattern or pin map. Route the analog outputs away from switching nodes and high-current digital paths, maintain a continuous ground reference, and follow the manufacturer reference design for decoupling and via placement. Pin assignments and return paths must be verified against the full datasheet before PCB release.
Treat the composite and Y/C paths as controlled-impedance analog video interfaces, not as general-purpose logic outputs. The verified data confirms 10-bit DAC conversion and interpolation to twice the pixel rate but does not specify output impedance, allowed loading, bandwidth, or jitter. Use short traces, appropriate grounding, and the connector/termination scheme required by the target display. Measure video amplitude and synchronization after assembly because loading and cabling can materially affect legacy analog displays.
Do not treat the TMC22091KHC as automatically interchangeable with the TMC22191KHC merely because both belong to the TMC22x91 family. The TMC22191 is explicitly identified as supporting 30 indexed overlay colors, while the corresponding TMC22091 feature set was not established in the supplied data. Before substitution, compare all 100 terminals, configuration registers, input timing ranges, supply requirements, DAC output levels, and test patterns. A matching package name alone does not prove functional drop-in compatibility.
合規資訊
The supplied web results did not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. The referenced SMPTE 170M and CCIR Report 624 entries describe television standards and are not product-compliance certifications.
