+3.3V Programmable LVDS Transmitter 18-Bit Flat Panel Display (FPD) Link-85 MHz [Life-time buy]# DS90C365MTD Technical Documentation
## 1. Application Scenarios
### Typical Use Cases
The DS90C365MTD is a LVDS serializer primarily designed for high-speed video transmission applications. This 24-bit color FPD-Link serializer converts 28 bits of parallel LVCMOS/LVTTL data into four LVDS data streams plus a LVDS clock channel.
Primary applications include:
- Automotive infotainment systems - Connecting head units to TFT-LCD displays
- Medical imaging displays - High-resolution medical monitors and diagnostic equipment
- Industrial control panels - Machine interface displays in manufacturing environments
- Avionics displays - Cockpit instrumentation and passenger entertainment systems
- Digital signage - Large format commercial displays and advertising panels
### Industry Applications
Automotive Industry:
- Center stack displays (8-12 inch TFT-LCD)
- Digital instrument clusters
- Rear-seat entertainment systems
- Heads-up displays (HUD)
- Surround-view camera systems
Medical Industry:
- Patient monitoring displays
- Surgical display systems
- Diagnostic imaging workstations
- Portable medical equipment displays
Industrial Applications:
- Human-Machine Interface (HMI) panels
- Process control displays
- Test and measurement equipment
- Robotics control interfaces
### Practical Advantages
Key Benefits:
- Reduced cable count - 28:5 signal reduction minimizes connector size and cost
- EMI reduction - LVDS signaling provides superior noise immunity
- Long distance transmission - Reliable operation up to 10 meters
- Low power consumption - Typically <200mW operating power
- Integrated DC balancing - Ensures stable DC levels for AC-coupled interfaces
Limitations and Constraints:
- Fixed data format - Limited to specific pixel clock frequencies (20-65 MHz)
- No embedded audio - Requires separate audio transmission solution
- Limited cable equalization - May require external equalizers for very long cables
- Temperature range - Industrial temperature range may not suit extreme environments
## 2. Design Considerations
### Common Design Pitfalls and Solutions
Power Supply Sequencing:
- Pitfall : Improper power-up sequencing can cause latch-up
- Solution : Implement controlled power sequencing with proper reset circuitry
- Implementation : Use power management ICs with enable/disable control
Signal Integrity Issues:
- Pitfall : Reflections and signal degradation in LVDS pairs
- Solution : Implement proper termination (100Ω differential)
- Implementation : Place termination resistors close to receiver inputs
Clock Jitter Problems:
- Pitfall : Excessive jitter causing display artifacts
- Solution : Use stable clock sources with low phase noise
- Implementation : Implement dedicated clock distribution circuits
### Compatibility Issues
Source Compatibility:
- Graphics controllers must match pixel clock requirements (20-65 MHz)
- Color depth compatibility - Supports 24-bit RGB + control signals
- Voltage level matching - 3.3V LVCMOS/LVTTL inputs required
Display Compatibility:
- Receiver pairing - Requires compatible FPD-Link deserializer (DS90C366)
- Panel interface - Must match display controller timing requirements
- Backward compatibility - Limited compatibility with older FPD-Link versions
### PCB Layout Recommendations
Power Distribution:
- Use separate power planes for analog and digital supplies
- Implement proper decoupling - 0.1μF ceramic capacitors placed within 2mm of each power pin
- Power plane isolation - Use ferrite beads
