EL4340IUZ - 500MHz Triple 2:1 Video Mux Amplifier | Renesas
部品番号: EL4340IUZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.1 | $310.00 |
| 500 | $2.75 | $1,375.00 |
| 1,000 | $2.45 | $2,450.00 |
EL4340IUZ 概要
A multiplexing amplifier (mux amp) is an integrated analog switch and buffer combined into a single device. Within the signal-chain hierarchy, it sits between video switches and output line drivers: it selects between two input sources per channel and drives a terminated coaxial or back-terminated video line without a separate buffer stage. Mux amps are a subclass of wideband operational amplifiers specialized for switching applications, where switch charge injection and settling time, not just raw bandwidth, determine signal fidelity.
Key features of the EL4340 include a 500MHz -3dB bandwidth, fixed unity-gain stability for video-grade settling, and a HIZ output state that allows the outputs of multiple devices to be wire-ORed together for larger switching matrices. This directly reduces board area and cost versus discrete switch-plus-buffer solutions.
The ENABLE pin implements a power-down mode that turns off unneeded circuitry in power-sensitive applications; pulling ENABLE high disables the device. The three independent 2:1 channels are well matched, minimizing channel-to-channel skew and amplitude error in RGB or YUV video paths. The architecture prioritizes high slew rate and bandwidth over DC precision, targeting AC-coupled or clamped video signals rather than instrumentation-grade DC accuracy.
Typical applications include video switching and routing matrices, RGB/YUV source selection in displays and projectors, security and surveillance camera switching, KVM switch analog front ends, and cable/satellite set-top-box video output multiplexing. In each case, the combination of 500MHz bandwidth and wire-OR-able HIZ outputs allows scalable crosspoint-style designs.
Design consideration: because the gain is fixed at unity, any required signal gain must be provided by separate stages. Ensure that disabled-device outputs (HIZ state) are not expected to sink or source current, and follow the datasheet layout guidance for supply decoupling to preserve the wideband response.
This page synthesizes distributor availability, drop-in alternatives, application guidance, and design notes not consolidated in the manufacturer datasheet.
ドロップイン代替品: EL4340IUZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
EL4340IU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EL4342IU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EL4342IUZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EL4340IUZ-T7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EL4340IUZ 最大定格＆電気的特性
| 機能 | Triple 2:1 multiplexing amplifier (mux amp) |
| Bandwidth (-3dB) | 500 MHz |
| Gain Configuration | Fixed unity gain |
| チャネル数 | 3 |
| Inputs per Channel | 2:1 mux |
| Output State Feature | High-impedance output (HIZ) - wire-OR capable |
| Power-Down | Yes (ENABLE pin) |
| パッケージ | 24-QSOP (SSOP-24) |
| 実装タイプ | Surface Mount |
EL4340IUZ 24-qsop (ssop-24) ピン配置ガイド
EL4340IUZ (24-qsop (ssop-24) パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: EL4340IUZ.
詳細は データシート をご参照ください。
主な用途
EL4340IUZ の用途: 6 件s: Video Switching and Routing Matrices, RGB/YUV Source Selection in Displays and Projectors, Security and Surveillance Camera Multiplexing, KVM Switch Analog Front Ends, Set-Top Box and Consumer Video Output Selection, Industrial Video Test and Measurement Signal Routing.
Video Switching and Routing Matrices
The EL4340 is purpose-built for video switching: its 500MHz bandwidth, high slew rate, and fixed unity gain preserve fast video edges while its HIZ output state allows outputs of multiple devices to be wired onto a common bus. A routing matrix can therefore be expanded in multiples of three channels (one RGB group per device) simply by wiring outputs together and enabling only the selected device. The ENABLE power-down mode lets unselected devices consume minimal power. Compared with discrete analog switch plus buffer stages, the integrated approach removes switch charge-injection settling issues and reduces component count per channel.
おすすめ
RGB/YUV Source Selection in Displays and Projectors
Display and projector front ends must select between multiple analog RGB or YUV sources before digitization. The EL4340 maps its three channels directly onto the R, G, B (or Y, Pb, Pr) signals, and the 500MHz bandwidth supports high-resolution video formats with sharp sync edges. Because all three channels switch together under common select logic, color-channel skew is minimized. The unity-gain architecture drives back-terminated 75-ohm video loads without external gain-setting resistors, and the HIZ output allows a second EL4340 to share the same downstream path for additional sources.
おすすめ
Security and Surveillance Camera Multiplexing
Multi-camera surveillance systems frequently switch several camera feeds onto one recorder or monitor input. The EL4340 provides three 2:1 mux-amp channels per 24-QSOP device, so a pair of devices handles a six-camera composite or component video fan-in. The high-impedance output state is central here: only the selected camera's EL4340 drives the shared coax line, while others sit in HIZ, preventing bus contention. The ENABLE power-down mode reduces power draw in multi-device, always-on installations, and the 500MHz bandwidth comfortably exceeds the needs of NTSC/PAL composite video with margin for HD analog formats.
おすすめ
KVM Switch Analog Front Ends
Keyboard-video-mouse switches need to route one of several computer video outputs to a shared monitor with minimal signal degradation. The EL4340's fixed unity gain and 500MHz bandwidth deliver transparent switching of analog VGA signals, while the HIZ wire-OR output architecture lets multiple EL4340 devices feed one monitor cable without external combining switches. The ENABLE pin allows the control logic to power down channels not in use, useful in desktop KVM units. Fast settling after switching minimizes the visible blanking interval when a user changes computers.
おすすめ
Set-Top Box and Consumer Video Output Selection
Cable and satellite set-top boxes with multiple video output formats (composite, S-Video luma/chroma, component) can use the EL4340 to select which signal drives the shared output connector. The three channels suit Y/C (S-Video) or component-pair switching, and the 500MHz bandwidth leaves generous headroom over standard-definition video. The ENABLE power-down mode supports energy-star standby requirements by disabling the video path when the box is off, while the QSOP-24 surface-mount package fits dense consumer PCBs. Wire-OR-able outputs allow a common output connector shared across boards or tuners.
おすすめ
Industrial Video Test and Measurement Signal Routing
Automated test equipment and video test instruments route multiple signal sources to measurement or display stages. The EL4340 offers deterministic switching with 500MHz bandwidth, so fast analog edges pass without distortion during automated sweep testing. Its HIZ output bus-sharing supports modular instruments where several plug-in channels drive one common measurement path, and the ENABLE pin lets unused slots consume near-zero power. The unity-gain fixed architecture eliminates resistor-programmed gain errors between channels, improving channel-to-channel consistency in comparative measurements of video equipment under test.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EL4340IUZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EL4340IU | EL4342IU | EL4342IUZ | EL4340IUZ-T7 |
|---|---|---|---|---|---|
| Package | 24-QSOP (SSOP-24) | 24-QSOP (SSOP-24) - same | 24-QSOP (SSOP-24) - same | 24-QSOP (SSOP-24) - same | 24-QSOP (SSOP-24) - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Bandwidth | 500 MHz | 500 MHz | 500 MHz (family) | 500 MHz (family) | 500 MHz |
| Gain Configuration | Fixed unity gain | Fixed unity gain | Fixed unity gain | Fixed unity gain | Fixed unity gain |
| HIZ Output (wire-OR) | Yes | Yes | Yes | Yes | Yes |
| ENABLE Power-Down | Yes | Yes | Yes | Yes | Yes |
| Lead-Free / RoHS Suffix | UZ (lead-free) | IU (standard) | IU (standard) | UZ (lead-free) | UZ (lead-free), tape & reel |
主な差別化要因
- Wire-OR-able HIZ outputs enable scalable switching matrices （vs EL4342IU)
- 500MHz bandwidth with integrated 2:1 selection （vs Discrete switch + buffer solution)
- ENABLE power-down for power-sensitive designs （vs EL4340IU)
設計ノート
The EL4340 is a 500MHz wideband device, so layout discipline dominates performance. Keep the input traces of each mux channel short and impedance-controlled (75-ohm environments for video), and place 0.1uF ceramic decoupling capacitors within a few millimeters of each supply pin, with a bulk 4.7uF-10uF capacitor nearby. Use a continuous ground plane under the QSOP-24; avoid routing digital select/ENABLE lines parallel to analog inputs to prevent crosstalk-induced ghosts during switching transitions.
Do not back-terminate shared output buses twice: with wire-ORed HIZ outputs, ensure exactly one device is enabled at any instant, otherwise two low-impedance outputs will contend and distort the line. Also, the fixed unity gain means any system gain must come from elsewhere in the chain - do not expect the EL4340 to compensate for lossy source-selection networks. Finally, confirm the ordering suffix (IU vs UZ) against RoHS requirements before BOM release.
Use the ENABLE power-down mode to cut power in multi-device matrices: pull ENABLE high to disable unneeded circuitry per the Renesas datasheet. Estimated: with N devices in a matrix, powering down all but the selected device reduces aggregate analog current roughly to that of one active device plus leakage of disabled parts. Account for the wake-up/settling delay after enable when sequencing channel changes in automated systems so the first video lines after a switch are valid.
コンプライアンス情報
The UZ suffix in EL4340IUZ conventionally denotes the lead-free/RoHS variant of this Renesas (formerly Intersil/Elantec) family, but formal compliance must be confirmed on the Renesas product page for the exact ordering code.
