OPA875ID - 700 MHz 2:1 Video Multiplexer | Texas Instruments
MPN: OPA875ID ✓ فعالOPA875ID نمای کلی
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.
جایگزین‌های drop-in برای OPA875ID — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
هیچ جایگزین مستقیمی برای این محصول موجود نیست.
درخواست جایگزینOPA875ID حداکثر مقادیر مجاز و مشخصات الکتریکی
| 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 |
| جریان تغذیه | 11 mA |
| بسته‌بندی | 8-pin SOIC |
| Alternative Package | 8-pin MSOP |
| نوع نصب | Surface mount |
| Switching Architecture | Current-steering input-stage switching |
راهنمای پیکربندی پین OPA875ID 8-pin msop
پیکربندی پین برای OPA875ID (پکیج 8-pin msop). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
داده پین‌آوت تفصیلی موجود نیست برای OPA875ID.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
OPA875ID مناسب است برای 6 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای OPA875ID — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
یادداشت‌های طراحی
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.
اطلاعات انطباق
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.