TMC22071AKHC Genlocking Video Digitizer | onsemi
MPN: TMC22071AKHC ✓ Hoạt độngTMC22071AKHC Tóm tắt
A video digitizer is a signal-processing IC that converts analog composite-video information into digital timing and pixel-related data for subsequent processing. Within the video-processing hierarchy, it combines analog input conditioning, synchronization extraction, timing measurement, phase-locked-loop control, and a digital direct digital synthesizer. The TMC22071AKHC therefore sits between composite-video sources and downstream digital video or synchronization systems rather than functioning as a general-purpose video encoder.
The verified feature set includes a fully integrated three-channel acquisition multiplexer and a two-stage video clamp. These functions allow multiple analog video inputs to share the acquisition path while stabilizing the signal before it reaches the timing-processing circuitry. Automatic gain adjustment compensates for input-level variation, and synchronization detection and separation supports reliable identification of video timing information. The operating range is specified from 0°C to 70°C.
Internal timing functions include horizontal synchronization generation, pixel and subpixel HSYNC-to-video timing adjustment, a horizontal phase-locked loop, and a direct digital synthesizer. The verified pin information also identifies PLL-filter, phase-frequency-detector input, bypass-capacitor, reference-voltage, compensation, clock-input, and clock-output connections. These blocks indicate that the device performs both synchronization recovery and programmable timing generation rather than simply digitizing luminance and chrominance voltage levels.
Typical uses include NTSC or PAL video timing generation, multi-source video selection, genlocking equipment, broadcast and professional video systems, laboratory video synchronization setups, and embedded systems that need repeatable timing derived from an external composite-video source. A three-channel multiplexer is particularly useful where several sources must be acquired through a shared analog front end.
Designers should pay particular attention to analog grounding, bypass placement, reference and compensation networks, PLL filtering, and external clock implementation. Because this is a high-pin-count MQFP device, PCB layout should minimize analog and digital return paths while preserving the application values recommended in the manufacturer datasheet. The 0°C to 70°C specification also makes this part best suited to commercial-temperature equipment rather than extended industrial or automotive environments.
This page combines verified manufacturer and distributor data with practical design context, explicit data gaps, and a same-package alternative review. It is designed to support datasheet lookup, procurement, initial circuit planning, and drop-in replacement assessment without inventing electrical ratings, pin functions, or cross-reference data that the supplied sources do not establish.
Bộ thay thế dễ dàng lắp đặt cho TMC22071AKHC — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TMC22071AHCP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TMC22071AKHC Thông số kỹ thuật
| Product Type | Genlocking video digitizer |
| Manufacturer | onsemi |
| Supply Voltage Range | 4.75 V to 5.25 V |
| Supported Video Standards | NTSC, PAL |
| Video Input Multiplexer Channels | 3 channels |
| Video Clamp | Two-stage |
| Automatic Gain Adjustment | Supported |
| Synchronization Functions | Sync detection and separation |
| Timing Adjustment | Pixel and subpixel adjustment of HSYNC-to-video timing |
| Genlock Support | Genlock to NTSC or PAL inputs |
| Internal Timing Architecture | Horizontal phase-locked loop and direct digital synthesizer |
| Performance Temperature Range | 0°C to 70°C |
| Hộp | 100-MQFP (20 mm × 14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Signal Input Type | Analog composite video |
| Interface Category | Video processing IC |
| Documented Interface Blocks | PLL filter, PFD input, bypass capacitor, VREF, COMP, CLK IN, and CLK OUT |
Hướng dẫn cấu hình chân TMC22071AKHC 100-mqfp (20 mm × 14 mm)
Cấu hình chân cho TMC22071AKHC (100-mqfp (20 mm × 14 mm) gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho TMC22071AKHC.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
TMC22071AKHC phù hợp cho 6 Áp dụngs: Multi-Source Video Acquisition, NTSC and PAL Genlocking, Professional Video Timing Systems, Video Test and Measurement Equipment, Analog Video Switching and Conditioning, Embedded Composite-Video Timing Controller.
Multi-Source Video Acquisition
The TMC22071AKHC fits multi-source analog-video acquisition because it integrates a three-channel acquisition multiplexer with a two-stage video clamp and automatic gain adjustment. According to the manufacturer datasheet, these blocks allow several composite-video inputs to share the acquisition path while the clamp and gain functions condition changing signal levels. The selected source can then feed the synchronization detector and separator, reducing the need for separate input-switching circuitry. Designers should preserve the recommended grounding, bypass, and reference networks around the analog interface. A measured trade-off is the 100-MQFP footprint, which is substantially larger and more complex to route than a small mixed-signal converter, but it consolidates multiplexing, timing recovery, and genlocking functions in one device.
Được đề xuất
NTSC and PAL Genlocking
The TMC22071AKHC is appropriate for equipment that must synchronize local timing to an external NTSC or PAL composite-video reference. According to the manufacturer datasheet, the device includes sync detection and separation, a horizontal phase-locked loop, a direct digital synthesizer, and genlock capability for both standards. These blocks allow HSYNC timing to be recovered or regenerated with pixel and subpixel adjustment relative to video. The main implementation requirement is a stable 4.75 V-to-5.25 V supply and careful analog layout around the PLL filter, PFD input, bypass capacitor, reference, compensation, and clock connections.
Được đề xuất
Professional Video Timing Systems
The TMC22071AKHC can support professional video timing systems that require repeatable synchronization derived from an analog composite-video source. Its documented sync separation, horizontal phase-locked loop, direct digital synthesizer, and adjustable HSYNC-to-video relationship provide the functional blocks needed for stable timing generation. According to the manufacturer datasheet, the device is guaranteed from 0°C to 70°C, which makes it appropriate for controlled commercial equipment but not automatically suitable for extended industrial environments. The 100-MQFP package demands disciplined routing and grounding, particularly where analog timing paths and digital control interfaces share the board.
Được đề xuất
Video Test and Measurement Equipment
The TMC22071AKHC fits laboratory video test equipment that compares or aligns an incoming composite-video signal with a synthesized reference. Its three-channel multiplexer permits selection among multiple sources, while automatic gain adjustment and the two-stage clamp help establish a stable signal level before synchronization processing. According to the manufacturer datasheet, pixel and subpixel HSYNC-to-video adjustment supports more precise timing alignment than coarse delay selection. External clock and PLL-filter connections are critical to repeatable results, so component tolerances, reference stability, and layout should be controlled in accordance with the manufacturer recommendations.
Được đề xuất
Analog Video Switching and Conditioning
The TMC22071AKHC can simplify boards that need more than passive analog video switching. Its integrated three-channel multiplexer performs source selection, the two-stage clamp provides video-level conditioning, and automatic gain adjustment reduces sensitivity to source-level variation. According to the manufacturer datasheet, the conditioned signal proceeds into synchronization detection and separation, enabling timing-aware behavior rather than simple signal routing. The design trade-off is functional consolidation against a 100-pin MQFP implementation, which requires more PCB area and careful treatment of analog, digital, PLL, clock, and ground connections.
Được đề xuất
Embedded Composite-Video Timing Controller
The TMC22071AKHC is useful in embedded equipment that must derive or align digital timing from an external NTSC or PAL composite-video signal. The direct digital synthesizer, horizontal phase-locked loop, sync separator, and pixel/subpixel adjustment support controllable timing relationships, while the internal multiplexer simplifies systems with several available sources. According to the manufacturer datasheet, external PLL-filter, PFD-input, bypass-capacitor, clock, reference, and compensation paths are integral to the intended circuit. Its specified 0°C-to-70°C range and 4.75 V-to-5.25 V supply make enclosure temperature and power-budget planning important.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TMC22071AKHC — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TMC22071AHCP |
|---|---|---|
| Package | 100-MQFP (20x14) | 100-MQFP (20x14) |
| Brand | onsemi | onsemi |
| Product Type | Genlocking video digitizer | Genlocking video digitizer |
Bảo phân biệt quan trọng
- Integrated three-channel analog-video acquisition (vsTMC22071AHCP)
- Direct NTSC and PAL genlocking support (vsTMC22071AHCP)
- Fine HSYNC alignment (vsTMC22071AHCP)
- Consolidated video-timing architecture (vsTMC22071AHCP)
Ghi chú thiết kế
Follow the manufacturer datasheet layout for the three analog video inputs, two-stage clamp, VREF, COMP, RT, RB, PLL-filter network, PFD input, CBYP, and clock connections. Keep analog routing compact, maintain a continuous ground reference under the MQFP where recommended by the datasheet, and avoid routing digital signals beneath sensitive analog nodes. The high pin count does not replace good partitioning: separating the analog acquisition path from PLL and digital timing paths can reduce coupling between video levels and synchronization circuitry.
Operate the TMC22071AKHC from a supply constrained to 4.75 V to 5.25 V and verify startup, tolerance, ripple, and load-transient behavior in the final system. Place the datasheet-recommended bypass capacitors close to their associated supply and reference pins, with short ground returns. Although the supplied data does not specify current consumption or permitted operating dissipation, those values must be checked in the manufacturer datasheet before finalizing a 5 V power budget or estimating thermal margins.
Do not treat the TMC22071AKHC as a conventional standalone ADC. Its documented role includes analog multiplexing, clamping, gain adjustment, synchronization separation, phase locking, and timing synthesis, so the external clock, PLL-filter, reference, compensation, and bypass networks determine usable performance. Also confirm that the NTSC or PAL timing expectations of the target source match the design. The verified 0°C-to-70°C range does not support an extended industrial temperature claim without additional qualification evidence.
Thông tin tuân thủ
The supplied verified web data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the distributor listings.
