THS7314D - 3-Channel SDTV Video Amplifier | Texas Instruments
MPN: THS7314D ✓ Hoạt độngTHS7314D Tóm tắt
A video amplifier is an analog signal-chain component that conditions composite or component video signals between a source, processing stage, and display. It belongs to the amplifier hierarchy, specifically the video-amplifier and video-buffer category. Unlike a passive termination network, an integrated video amplifier can provide filtering, gain, impedance matching, and output-drive capability while reducing the number of discrete components required on a video board.
The THS7314D provides three buffered channels, 6 dB gain, and fifth-order filtering in one 8-pin SOIC. Its rail-to-rail output stage supports both AC and DC line-driving requirements. The manufacturer specifically identifies driving two lines or 75-ohm loads as supported use cases, making the device relevant to SDTV routing, video distribution, and display-adapter designs. The integrated filter function is especially useful when system designers want repeatable channel filtering without external filter networks.
Its low-power operation distinguishes the part from higher-current video drivers. Texas Instruments states that the total 16 mA quiescent current at a 3.3 V supply makes the THS7314 suitable for USB-powered, portable, and other power-sensitive video applications. The single-supply 3 V to 5 V operating range also allows the same architecture to operate from nominal 3.3 V and 5 V system rails, although the complete design must satisfy the limits in the manufacturer data sheet for each voltage and temperature condition.
Typical applications include SDTV output buffering, video splitters and distribution boards, portable media equipment, video capture equipment, and display interfaces. In each case, the three-channel structure reduces routing complexity while the fifth-order filters and 6 dB gain support controlled signal transmission into downstream analog video stages. The 75-ohm drive capability is useful when the output must connect through conventional video cabling to a terminated load.
Designers should verify the complete pin configuration, decoupling requirements, input and output impedance, bandwidth, channel-to-channel behavior, and recommended termination network against the official data sheet. Video-layout practices should also be considered, including short trace routing, careful grounding, separation between analog video paths and noisy switching circuitry, and appropriate filtering at external connectors.
This page consolidates the verified manufacturer and distributor information for THS7314D and clearly identifies parameters for which verified values were not supplied. It also distinguishes the confirmed device characteristics from engineering information that must be obtained from the official THS7314 data sheet before layout or qualification decisions are finalized.
Bộ thay thế dễ dàng lắp đặt cho THS7314D — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với THS7314D (cùng hình factor và footprint) — khác nhau ở Package, Process Technology.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếTHS7314D Tỷ lệ tối đa & tính chất điện
| Product Type | 3-channel SDTV video amplifier |
| Channel Count | 3 channels |
| Supply Voltage Range | 3 V to 5 V |
| Video Gain | 6 dB |
| Integrated Filter Order | 5th order |
| Total Quiescent Current | 16 mA at 3.3 V |
| Process Technology | Silicon-Germanium BiCom-III |
| Output Stage | Rail-to-rail |
| Supported Load | 75 ohm |
| Drive Configuration | Up to 2 lines |
| Hộp | 8-pin SOIC |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân THS7314D 8-pin soic
Cấu hình chân cho THS7314D (8-pin soic gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho THS7314D.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
THS7314D phù hợp cho 6 Áp dụngs: SDTV Output Buffering, Portable Video Equipment, Video Distribution Board, Video Capture Interface, Display Adapter, Industrial Video Monitoring.
SDTV Output Buffering
The THS7314D suits SDTV boards that need three conditioned analog-video outputs from one compact IC. Its three channels, integrated fifth-order filters, and 6 dB gain consolidate functions that might otherwise occupy separate buffers or external filter networks. The rail-to-rail output stage supports AC and DC line driving, while the 3 V to 5 V single-supply range fits common 3.3 V and 5 V systems. For this use case, engineers should verify the official filter response, input termination, output network, and channel timing before release.
Được đề xuất
Portable Video Equipment
The THS7314D is appropriate for portable or USB-powered video products because it combines three buffered channels in one 8-pin SOIC and draws 16 mA total quiescent current at 3.3 V. Its 3 V to 5 V single-supply operation permits use from common portable-system rails without separate negative supplies. Integrating filtering, gain, and output drive reduces board area compared with three discrete channels. The final design must still account for dynamic output current and termination losses because the 16 mA figure identifies quiescent consumption, not available drive current.
Được đề xuất
Video Distribution Board
A three-channel video distribution board can use the THS7314D to provide filtered, 6 dB-gain outputs with a shared amplifier package. Texas Instruments specifies support for driving up to two lines or 75-ohm loads, making the part relevant to conventional terminated video routing. The fifth-order filters can reduce the external component count while standardizing channel behavior. Before deployment, verify cable length, source and load impedances, termination placement, and output-swing margin because those system details determine whether the stated line-drive capability is adequate.
Được đề xuất
Video Capture Interface
The THS7314D can condition analog video channels entering a capture or processing system, provided its filter and bandwidth characteristics satisfy the source format. Three integrated channels and 6 dB gain allow the board to standardize signal levels before downstream conversion or processing. Its 16 mA quiescent current at 3.3 V supports compact embedded systems, while the 8-pin SOIC simplifies assembly. Engineers should compare the official response curves and timing against the selected capture front end rather than relying only on the SDTV description.
Được đề xuất
Display Adapter
The THS7314D is suitable for legacy or component-video display-adapter stages requiring three filtered video channels and a gain of 6 dB. Its rail-to-rail output provides a practical way to drive terminated video lines from a low-voltage digital system, while the integrated fifth-order filters can simplify the analog output section. The compact 8-pin SOIC helps limit board area. Integration must be checked carefully because connector impedance, sync behavior, AC or DC coupling, and grounding can materially influence the usable output swing.
Được đề xuất
Industrial Video Monitoring
The THS7314D can serve as an analog video buffer in industrial monitoring equipment that distributes camera or composite-video signals. Three channels and integrated fifth-order filters reduce repetitive circuitry, while 6 dB gain supports standardized downstream levels. The 3 V to 5 V operating range is useful in compact control panels and embedded monitoring systems. For long cables or noisy installations, engineers should evaluate shielding, grounding, input protection, and termination together with the manufacturer’s recommended output network. Industrial temperature suitability must be confirmed from the official specifications.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho THS7314D — 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 |
|---|---|
| Package | 8-pin SOIC |
| Brand | Texas Instruments |
| Channel Count | 3 channels |
| Supply Voltage Range | 3 V to 5 V |
| Video Gain | 6 dB |
| Integrated Filter | 5th order |
| Total Quiescent Current | 16 mA at 3.3 V |
| Supported Load | 75 ohm |
| Output Stage | Rail-to-rail |
| Process Technology | Silicon-Germanium BiCom-III |
Bảo phân biệt quan trọng
- Three integrated filtered video channels (vsTHS7316DR)
- Low-power operation for portable systems (vsTHS7314DR)
- Single-package consolidation (vsDiscrete video-buffer implementation)
Ghi chú thiết kế
Use the recommended layout in the official THS7314 data sheet as the starting point. Keep the three video paths short, preserve the intended source and load impedances, and avoid routing video signals close to switching power stages or high-speed digital clocks. Maintain a continuous ground reference and place required bypass components directly at their associated pins. Because the verified excerpts do not supply the complete pin table or layout artwork, do not assign connections or grounding from generic SOIC conventions.
Do not treat the stated 16 mA quiescent current at 3.3 V as a maximum output-current rating or assume that the THS7314D can drive arbitrary numbers of 75-ohm loads. Verify the official output-current, swing-voltage, and recommended termination data under the actual supply and temperature. Also confirm the filter response and channel timing when the part is used beyond a conventional SDTV source, because the broad product description alone does not establish suitability for every composite-video format.
Decouple the single 3 V to 5 V supply according to the manufacturer’s application circuit and keep the power-return path compact. Video outputs should be referenced to the same low-impedance ground system as the input source to minimize ground offsets and noise coupling. The rail-to-rail output description does not eliminate the need for output-current headroom, so calculate worst-case dissipation and load demand from the official limits before selecting the supply and PCB copper area.
Thông tin tuân thủ
The supplied verified excerpts do not explicitly state compliance or qualification claims for the exact THS7314D ordering code. Current material-compliance and quality documents from Texas Instruments should be checked before production release.