Analog & Digital Crosspoint Integrated Circuit
Crosspoint Switch ICs act as the signal dispatch centers or multi-port switch matrices in electronic systems. Unlike standard Multiplexers (MUX) that perform “Many-to-One” selection, Crosspoint switches enable “Many-to-Many” routing. Any of the M input signals can connect to any of the $N$ output signals—or even broadcast one input to multiple outputs simultaneously.
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Global Market Leaders
1. Analog Devices (ADI) — Industry Leader
ADI offers the most extensive portfolio, ranging from traditional analog matrices to ultra-high-speed digital switches.
| Model Series | Signal Type | Key Applications / Features |
| AD8113 / AD8114 | Analog (Audio/Video) | 16×16 audio/video matrix; supports up to ±12V swing. |
| ADV3205 | Analog (Video) | 600 MHz, 16×16 buffered multiplexer; used in broadcast and surveillance. |
| ADN4604 / ADN4605 | Digital (High-Speed) | 16×16 / 40×40 asynchronous digital switches; rates up to 4.25 Gbps. |
| AD75019 | Analog (General) | 16×16 switch array with a serial interface; highly versatile. |
2. Texas Instruments (TI) — Interface & Redriver Expert
TI excels in high-speed interfaces (LVDS/CML) and digital crosspoints with integrated signal compensation.
| Model Series | Signal Type | Key Applications / Features |
| DS25CP102 / DS25CP104 | Digital (LVDS) | 3.125 Gbps 2×2/4×4 crosspoint; low power and low jitter. |
| SN65LVCP22 | Digital (LVDS) | 2×2 switch; up to 2 Gbps; ideal for clock/data distribution. |
| LMH6582 / LMH6584 | Analog (Video) | 16×8 / 32×16 high-speed video matrices for display systems. |
| TUSB1046 / TUSB1064 | Digital (Type-C) | Type-C Alt Mode redriver switches supporting DisplayPort switching. |
3. Microchip — Legacy Telecom Strength
Inherited from Zarlink, Microchip provides mature analog matrix technology for industrial and telecom switching.
| Model Series | Signal Type | Key Applications / Features |
| MT8816 / MT8812 | Analog (ISO-CMOS) | 8×16 / 8×12 arrays; ultra-low “on” resistance; industrial standard. |
| MT8809 | Analog (General) | 8×8 array; used in audio routing and sensor networks. |
4. Diodes Incorporated (Pericom) — Protocol Switching
Specializes in high-speed serial protocols like PCIe, USB, and SATA.
| Model Series | Signal Type | Key Applications / Features |
| PI3EQX Series | Digital (Redriver) | Multi-protocol linear redrivers; supports PCIe 3.0/4.0 routing. |
| PI3WVR Series | Analog/Digital (Video) | Wide voltage range switches for DisplayPort and HDMI. |
5. Lattice Semiconductor — Broadcast Routing
Targets broadcast-grade SDI video and telecom backplanes.
| Model Series | Signal Type | Key Applications / Features |
| M211xx Series | Digital (High-Speed) | Ultra-high-speed switches (e.g., M21141) for 10G backplanes and SDI. |
6. Renesas (Intersil) — Precision Analog Control
Known for high reliability and low noise in high-performance analog signal chains.
| Model Series | Signal Type | Key Applications / Features |
| HA5351 | Analog (Fast Settling) | 500MHz bandwidth sampling/switch for precision signal routing. |
| ISL5944x Series | Analog (Video) | High-speed mux switches for KVM and professional displays. |
Chinese Domestic Manufacturers & Models
1. SGMicro — Analog Leader
Focuses on video switches and filters. Replaces mid-range TI and ADI parts.
- Models: SGM9117 (3-ch, 200MHz video), SGM9119 (Video driver with switch).
- Strengths: Stability, high compatibility; used in automotive and surveillance.
2. Lontium Semiconductor — Digital Video Specialist
A rare domestic player competing in high-bandwidth digital matrices (HDMI/DP/MIPI).
- Models: LT8644 (16×16, 3.4Gbps/ch, rivals ADI’s ADN4604), LT8641UX (4K HDMI 2.0 matrix).
3. 3PEAK — Industrial & Telecom
Specializes in industrial signal chains with high noise immunity.
- Models: TPV series (Video switches), TP series (Muxes for sensor switching).
4. Runic Technology — Cost-Effective Solutions
Grown rapidly in the general-purpose analog switch market.
- Models: RS2117 / RS2118 (Low voltage, low-resistance), RS2251 (Audio/low-freq routing).
5. Grange (Beijing) — Signal Routing
Targeting consumer electronics and handheld devices.
- Models: BCT4448 (Video switch), BCT4717 (Low-impedance control switch).
Domestic Cross-Reference Guide
| International (ADI/TI) | Recommended Domestic Vendor | Domestic Alternative Series |
| ADN4604 (Digital 16×16) | Lontium | LT8644 |
| AD811x (Analog Video Matrix) | SGMicro / 3PEAK | SGM911x / TPV Series |
| TS5A / SN74CBT (General Switch) | Runic | RS211x / RS225x |
| PI3V / PI3W (High-Speed Switch) | Grange | BCT4xxx Series |
Analog & Digital Crosspoint ICs Core Definitions
- Analog Crosspoint: Uses analog switch arrays (like CMOS gates) to pass signals transparently. It focuses on linearity, low distortion, and wide dynamic range. Think of it as a “reconfigurable wire”.
- Digital Crosspoint: Processes 0 and 1 logic levels. It includes signal shaping, re-clocking, and equalization. Key metrics are bit rates (Gbps), jitter control, and signal integrity.
- Architecture (Matrix): An internal M×N grid. Signals are routed instantly via serial (SPI/I2C) or parallel bus commands.
Typical Applications
- Broadcast & Pro-AV: Video matrix switchers in studios or OB vans. Distributes multiple camera feeds to various monitors or recorders.
- Telecom & Data Centers: Acts as a “traffic cop” for data. Used in backplane switching for high-bandwidth traffic and fiber-optic protection failover.
- Surveillance: Powers multi-screen wall controllers in command centers.
- ATE (Automatic Test Equipment): Signal routing for production line testing, allowing one tester to check multiple points on a PCB.
- Medical Imaging: Fast switching for transducer arrays in Ultrasound and MRI to synthesize real-time images.
- KVM & Peripherals: Controls multiple servers via one console or manages USB-C/DisplayPort routing in laptop docks.
Technical Classification Summary
| Category | Priority Metric | Top Manufacturers | Representative Models |
|---|---|---|---|
| Analog | Linearity, Voltage Swing | ADI, Microchip | AD8113, MT8812 |
| High-Speed Digital | Throughput (Gbps), LVDS/CML | TI, ADI, Lattice | ADN4604, DS25CP102 |
| Video-Specific | Bandwidth (MHz), Gain | ADI, Semtech, TI | AD8110, ADV3205 |
| Redriver | Signal Integrity, EQ | Diodes, TI, NXP | TUSB1046, PI3EQX |