Overview
The AD724JRZ-RL, produced by Analog Devices Inc., is a low-cost, integrated RGB to NTSC/PAL Encoder. This component 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 standards. The device operates from a single +5 V supply and can be powered down when not in use. It is designed to be compact, coming in a 16-lead SOIC package, and is specified for the 0°C to +70°C commercial temperature range.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage | 4.75 V | 5 V | 5.25 V | V | |
| Operating Supply Current | 33 mA | 42 mA | mA | ||
| Input Amplitude (Full Scale) | 714 mV p-p | mV p-p | |||
| Input Resistance (RIN, GIN, BIN) | 1 MΩ | Ω | |||
| Input Capacitance | 5 pF | pF | |||
| Luminance (LUMA) Roll-Off @ 5 MHz (NTSC) | -7 dB | dB | |||
| Luminance (LUMA) Roll-Off @ 5 MHz (PAL) | -6 dB | dB | |||
| Sync Level (NTSC) | 243 mV | 286 mV | 329 mV | mV | |
| Sync Level (PAL) | 300 mV | mV |
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
- Accepts either HSYNC and VSYNC or CSYNC
- Phase lock to external subcarrier
- Logic selectable NTSC or PAL encoding modes
- Compact 16-lead SOIC package
Applications
The AD724JRZ-RL is primarily used for converting RGB color component signals into NTSC or PAL video formats, making it suitable for various applications such as:
- Video encoding in consumer electronics
- Graphics and video processing systems
- Television and display systems
- Industrial and medical imaging devices
Q & A
- What is the primary function of the AD724JRZ-RL?
The AD724JRZ-RL converts red, green, and blue color component signals into their corresponding luminance and chrominance signals in accordance with either NTSC or PAL standards.
- What is the operating supply voltage of the AD724JRZ-RL?
The operating supply voltage is between 4.75 V and 5.25 V.
- Does the AD724JRZ-RL require external filters or delay lines?
No, the AD724JRZ-RL does not require external filters or delay lines.
- What types of sync signals can the AD724JRZ-RL accept?
The AD724JRZ-RL can accept either HSYNC and VSYNC or a standard CSYNC signal.
- Can the AD724JRZ-RL be powered down when not in use?
Yes, the AD724JRZ-RL can be powered down when not in use.
- What is the package type of the AD724JRZ-RL?
The AD724JRZ-RL comes in a 16-lead SOIC package.
- What are the supported video standards for the AD724JRZ-RL?
The AD724JRZ-RL supports both NTSC and PAL video standards.
- How does the AD724JRZ-RL handle clock inputs?
The AD724JRZ-RL accepts either FSC or 4FSC clock, or it can use a low-cost parallel-resonant crystal to generate the necessary subcarrier clock.
- What is the temperature range for the AD724JRZ-RL?
The AD724JRZ-RL is specified for the 0°C to +70°C commercial temperature range.
- Are the logical inputs of the AD724JRZ-RL CMOS compatible?
Yes, all logical inputs of the AD724JRZ-RL are CMOS compatible.
