Overview
The AD724JRZ, produced by Analog Devices Inc., is a low-cost RGB to NTSC/PAL Encoder. This integrated circuit converts red, green, and blue color component signals into their corresponding luminance (baseband amplitude) and chrominance (subcarrier amplitude and phase) signals, adhering to either NTSC or PAL video standards. The device provides composite video output and separate Y/C (S-Video) outputs, making it versatile for various video encoding applications. It operates from a single +5 V supply and does not require external delay lines or filters, simplifying the design process. The AD724JRZ is available in a compact 16-lead SOIC package and is specified for the 0°C to +70°C commercial temperature range.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package Type | SOIC-16 | |
| Operating Supply Voltage | 4.75 V to 5.25 V | V |
| Temperature Range | 0°C to +70°C | °C |
| Input Amplitude (Full Scale) | 714 mV p-p | mV |
| Input Resistance (RIN, GIN, BIN) | 1 MΩ | Ω |
| Input Capacitance | 5 pF | pF |
| Output Load | 75 Ω, reverse-terminated | Ω |
| RoHS Compliance | Yes |
Key Features
- Low-cost integrated solution for RGB to NTSC/PAL encoding
- Operates from a single +5 V supply
- Accepts FSC clock or crystal, or 4FSC clock
- Composite video and separate Y/C (S-Video) outputs
- Luma and chroma outputs are time-aligned
- No external filters or delay lines required
- Onboard DC clamp and sampled-data delay line
- Logic selectable NTSC or PAL encoding modes
- Compact 16-lead SOIC package
- CMOS compatible logical inputs
Applications
The AD724JRZ is primarily used in applications requiring the conversion of RGB color component signals to NTSC or PAL video standards. This includes:
- Consumer electronics such as TVs, DVD players, and gaming consoles
- Industrial video systems
- Medical imaging devices
- Automotive infotainment systems
- Any system requiring RGB to NTSC/PAL video encoding
Q & A
- What is the primary function of the AD724JRZ?
The AD724JRZ converts red, green, and blue color component signals into their corresponding luminance and chrominance signals according to NTSC or PAL video standards.
- What is the operating supply voltage of the AD724JRZ?
The operating supply voltage is between 4.75 V and 5.25 V.
- What type of package does the AD724JRZ come in?
The AD724JRZ is available in a 16-lead SOIC package.
- Does the AD724JRZ require external filters or delay lines?
No, the AD724JRZ does not require external filters or delay lines.
- What are the supported video standards for the AD724JRZ?
The AD724JRZ supports both NTSC and PAL video standards.
- How does the AD724JRZ handle sync signals?
The AD724JRZ can accept either HSYNC and VSYNC signals or a standard CSYNC signal to generate the composite sync signal.
- What is the temperature range for the AD724JRZ?
The AD724JRZ is specified for the 0°C to +70°C commercial temperature range.
- Is the AD724JRZ RoHS compliant?
Yes, the AD724JRZ is RoHS compliant.
- Can the AD724JRZ be powered down when not in use?
Yes, the AD724JRZ can be powered down when not in use.
- What types of outputs does the AD724JRZ provide?
The AD724JRZ provides composite video output and separate Y/C (S-Video) outputs.
