OPA875ID - 700 MHz 2:1 Video Multiplexer | Texas Instruments
料号： OPA875ID ✓ 量产中OPA875ID 概述
A high-speed video multiplexer is a signal-routing device that selects one of multiple analog inputs and presents that selected signal at a common output. The OPA875ID belongs to the broader video-switch IC and high-speed analog multiplexer categories. Unlike a general-purpose analog switch that merely connects a source to a load, it integrates a +2 video-amplifier channel and optimized input switching, allowing it to drive downstream video equipment while preserving wideband signal integrity.
Principal features include a 700 MHz device bandwidth, greater than 425 MHz large-signal bandwidth at 4 VPP, +2 gain, and a single-channel 2:1 configuration. Its 11 mA supply-current consumption reduces the power burden in distributed video systems. The manufacturer's product information also indicates improved gain accuracy and switching glitch compared with earlier multiplexer solutions, using a new input-stage switching approach.
The OPA875ID is available in SO-8 and small MSOP-8 package options, with OPA875ID identifying the SO-8 ordering variant. The manufacturer describes the OPA875 as a very wideband multiplexer suitable for high-speed video systems. Its architecture is intended to minimize the number of external signal-conditioning stages required in moderate-bandwidth routing applications while maintaining a compact footprint.
Typical uses include professional video routing, broadcast and monitoring equipment, test and measurement systems, and other applications that route baseband or composite-style high-speed video signals. The integrated +2 gain can reduce the need for a separate gain stage, while the two-input multiplexer consolidates source selection into a single device. Systems requiring three multiplexed channels should evaluate the manufacturer's OPA3875 family instead.
The primary design consideration is signal integrity: routing boards must use controlled-impedance traces, short connections, solid ground references, and careful termination around the high-speed amplifier inputs and output. Supply decoupling should follow the manufacturer's recommended layout, and unused or configuration pins must be connected exactly as specified in the datasheet.
This page consolidates manufacturer specifications, distributor availability references, package details, application guidance, and design considerations. It also distinguishes verified OPA875 ordering variants from packaging-only options, helping engineers avoid treating reel codes or different-package versions as true pin-compatible drop-in replacements.
直接替换替代料： OPA875ID ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料OPA875ID 最大额定值与电气特性
| Product Type | Single-channel 2:1 high-speed video multiplexer with integrated amplifier |
| Number of Channels | 1 channel |
| Multiplexer Configuration | 2:1 |
| Device Bandwidth | 700 MHz |
| Large-Signal Bandwidth | Greater than 425 MHz at 4 VPP |
| Signal Amplitude | 4 VPP |
| Voltage Gain | +2 |
| 电源电流 | 11 mA |
| 封装 | 8-pin SOIC |
| Alternative Package | 8-pin MSOP |
| 安装类型 | Surface mount |
| Switching Architecture | Current-steering input-stage switching |
OPA875ID 8-pin msop 引脚配置指南
OPA875ID（8-pin msop 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： OPA875ID.
请参阅 数据手册 以查看完整引脚配置。
典型应用
OPA875ID 适用于 6 应用s: Professional Video Source Routing, Broadcast Monitoring Systems, Test and Measurement Front Ends, Video Signal Distribution Selection, Camera and Video Interface Routing, Industrial Video Inspection Equipment.
Professional Video Source Routing
The OPA875ID is suitable for two-source professional video routing because it combines a 2:1 selection function with an integrated +2 video gain stage. Its 700 MHz device bandwidth and greater than 425 MHz large-signal bandwidth at 4 VPP provide the necessary headroom for high-speed baseband video paths. The 11 mA supply-current consumption also suits distributed routing equipment where channel density and power are important. In implementation, place the OPA875ID close to the source connectors, use controlled-impedance traces, and follow the manufacturer's recommended supply and termination arrangement. The integrated gain can remove a separate +2 stage, reducing component count, but output swing, loading, and downstream input impedance must be verified for the selected video standard.
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Broadcast Monitoring Systems
Broadcast monitoring systems can use the OPA875ID to route one of two high-speed video sources into a monitoring amplifier or display-processing chain. The device's +2 gain reduces the need for an additional fixed-gain stage, while its greater than 425 MHz large-signal bandwidth at 4 VPP addresses high-frequency video content and edge transitions. Its single-channel 2:1 format keeps the routing footprint compact in rack-mounted equipment. The main design concern is maintaining signal integrity between the connector, mux, and downstream receiver. Short traces, a continuous reference plane, appropriate source and load terminations, and decoupling close to the supply pins are necessary. Switching glitch should be evaluated against the monitoring standard because it can appear as a transient disturbance during source changes.
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Test and Measurement Front Ends
The OPA875ID can serve as a compact two-input analog front end in high-speed test and measurement equipment. Its 700 MHz device bandwidth, greater than 425 MHz large-signal bandwidth at 4 VPP, and +2 gain are useful when routing high-frequency video-like signals between test ports and downstream instrumentation. Integrating the multiplexer and gain stage can reduce board area and simplify control routing compared with a separate switch and amplifier. Engineers should still verify input common-mode limits, output swing, and output impedance against the exact instrument interface because those values were not present in the verified search excerpts. PCB implementation should minimize trace length around the device and use a properly terminated transmission-line environment for the highest operating frequencies.
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Video Signal Distribution Selection
The OPA875ID is appropriate for selecting between two video sources before distribution to downstream receivers when the path must preserve high-frequency signal content. Its +2 amplifier channel avoids the extra space and bandwidth losses associated with a separate gain block, while the 11 mA supply demand supports power-conscious distributed systems. The device is especially useful where a 2:1 topology matches the exact number of available sources. Layout quality remains critical because high-speed transitions can couple into adjacent control or analog lines. Keep input and output paths short, maintain continuous return paths, observe recommended decoupling, and avoid adding unnecessary stubs. The verified 4 VPP large-signal bandwidth condition should be treated as the reference operating point when evaluating source amplitude and downstream headroom.
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Camera and Video Interface Routing
The OPA875ID can support compact camera or video-interface routing where two analog video paths must be selected before amplification and processing. Its integrated +2 gain is beneficial when the receiver expects a gain-of-2 signal, and its wide bandwidth reduces the likelihood that the mux becomes the bandwidth-limiting stage in the chain. The 8-pin SOIC package is practical for conventional surface-mount boards, although exact pin assignments must be taken from the official datasheet. To preserve performance, locate the device near the connector or source driver, provide a low-impedance ground reference, and follow the manufacturer's bypass-capacitor recommendations. Cable and connector losses should be included in the end-to-end bandwidth assessment because the OPA875ID's specified bandwidth describes the device rather than the complete channel.
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Industrial Video Inspection Equipment
Industrial inspection systems using high-speed analog video can employ the OPA875ID to select between two camera or test-video sources. The 700 MHz device bandwidth and greater than 425 MHz large-signal bandwidth at 4 VPP accommodate sharp video transitions, while the integrated +2 stage simplifies the signal chain. Its 11 mA operating-current figure is useful in compact industrial electronics, although enclosure temperature and nearby converter noise still require attention. Use short, impedance-controlled routing and separate noisy switching-converter paths from sensitive video traces. Verify the source amplitude before operation because the stated large-signal bandwidth is tied to 4 VPP. If three inputs must be routed simultaneously, the manufacturer identifies the OPA3875 family as the more appropriate direction rather than placing multiple OPA875ID devices without careful planning.
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推荐产品汇总
工程参考数据： OPA875ID ——对比、设计指导和合规信息。
选型指南
设计说明
Treat the OPA875ID as a high-speed analog signal path rather than a low-frequency video switch. The verified manufacturer data specifies greater than 425 MHz large-signal bandwidth at 4 VPP, so route inputs and the output over short, controlled-impedance traces with a continuous reference plane. Avoid long stubs and unnecessary vias, and use connector launches or controlled-impedance transitions that match the intended signal environment.
Place the OPA875ID close to the source and destination connectors or driver stages to minimize trace loss and coupling. Keep the supply bypass path compact, provide a low-impedance ground connection, and separate the high-speed video route from switching supplies and digital clocks. Exact capacitance and placement values are not present in the verified excerpts, so the current manufacturer datasheet layout should be followed rather than relying on generic values.
Do not treat OPA875IDG4 or OPA875IDGKR as automatic drop-in alternatives for OPA875ID. The G4 designation is an ordering or packaging-related code, while the GKR part uses an 8-pin VSSOP/MSOP package instead of the SO-8 package associated with OPA875ID. Also verify the complete pinout, supply limits, common-mode range, and output swing from the official datasheet before substituting any part into an existing layout.
合规信息
The supplied verified excerpts confirm the product description, package, bandwidth, gain, and current consumption but do not state compliance certification results. Compliance fields are therefore marked unknown rather than inferred.