CCD LINEAR IMAGE SENSOR The TCD2551D is a CCD (Charge-Coupled Device) linear image sensor manufactured by Toshiba. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Type:** Linear CCD Image Sensor
- **Resolution:** 5340 pixels (effective)
- **Pixel Size:** 7 µm (H) × 7 µm (V)
- **Optical Black (OB) Pixels:** 51 pixels (front) + 51 pixels (rear)
- **Dummy Pixels:** 12 pixels (front) + 12 pixels (rear)
- **Total Pixels:** 5466 (5340 effective + 102 OB + 24 dummy)
- **Spectral Response Range:** 400 nm to 1000 nm (peak at ~750 nm)
- **Clock Frequency (Max):** 2 MHz
- **Output Voltage (Typical):** 2.5 V (saturation level)
- **Supply Voltage (VDD):** 12 V (typical)
- **Power Consumption:** ~200 mW (typical)
- **Operating Temperature Range:** -10°C to +60°C
- **Package:** 22-pin DIP (Dual In-line Package)
### **Descriptions:**
- The TCD2551D is designed for high-resolution scanning applications, such as document scanners, facsimile machines, and industrial inspection systems.
- It features a built-in sample-and-hold circuit to reduce external circuitry requirements.
- The sensor includes optical black (OB) pixels for dark-level reference and dummy pixels for signal stabilization.
### **Features:**
- **High Sensitivity:** Suitable for visible to near-infrared (NIR) light detection.
- **Low Noise:** Designed for stable signal output.
- **Built-in Sample-and-Hold:** Simplifies external circuit design.
- **Single 12V Power Supply:** Easy integration into systems.
- **Three-Phase Drive Clock:** Ensures efficient charge transfer.
For detailed electrical characteristics and timing diagrams, refer to the official Toshiba datasheet.
