AD725: RGB to NTSC/ PAL Encoder
The AD725 is a very low cost general purpose RGB to NTSC/ PAL encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and ...More
AD725: RGB to NTSC/ PAL Encoder
Product Description
The AD725 is a very low cost general purpose RGB to NTSC/ PAL encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and chrominance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards. These two outputs are also combined on-chip to provide a composite video output. All three outputs are available separately at voltages of twice the standard signal levels as required for driving 75 ohm, reverse-terminated cables.
An evaluation board is available for this product and may be ordered using the following product number: AD725-EB.
Features
- Composite Video Output: Both NTSC and PAL
- Chrominance and Luminance (S-Video) Outputs
- Luma Trap Port to Eliminate Cross Color Artifacts
- TTL Logic Levels
- Integrated Delay Line and
Auto-Tuned Filters - Drives 75 O Reverse-Terminated Loads
- Low Power +5 V Operation
- Power-Down to <1 µA
- Very Low Cost
Diagrams
- Enlarge
- Symbols and Footprints
Functional Block Diagram for AD725
RGB to NTSC/ PAL Encoder
Functional Block Diagram for AD725
| Part# | # DAC | Resolution (Bits) | Input Data Resolution | Max Oversampling (MHz) | Standard Definition | Prog Scan | HDTV | Component RGB/YPbPr | CVBS/S-Video | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|
| AD723 | n/a | n/a | - | - | X | - | - | RGB only | X | $3.76 |
| AD724 | n/a | n/a | - | - | X | - | - | RGB only | X | $6.08 |
| AD725 | n/a | n/a | - | - | X | - | - | RGB only | X | $4.56 |
| ADV7170 | 4 | 10 | 8 | 27 | X | - | - | X | X | - |
| ADV7171 | 4 | 10 | 8 | 27 | X | - | - | X | X | $5.40 |
| ADV7172 | 6 | 10 | 8 | 27 | X | - | - | X | X | - |
| ADV7173 | 6 | 10 | 8 | 27 | X | - | - | X | X | $5.67 |
| ADV7194 | 6 | 10 | 10 | 54 | X | X | - | X | X | $20.97 |
| ADV7324 | 6 | 14 | - | - | X | X | X | - | X | - |
| ADV7340 | 6 | 12 | 10 | 297 | X | X | X | X | X | - |
| ADV7341 | 6 | 12 | 10 | 297 | X | X | X | X | X | $14.00 |
| ADV7342 | 6 | 11 | 8 | 297 | X | X | X | X | X | - |
| ADV7343 | 6 | 11 | 8 | 297 | X | X | X | X | X | $7.65 |
| ADV7344 | 6 | 14 | 10 | 297 | X | X | X | X | X | - |
| ADV7390 | 3 | 10 | 8 | 297 | X | X | X | X | X | - |
| ADV7391 | 3 | 10 | 8 | 297 | X | X | X | X | X | $4.00 |
| ADV7392 | 3 | 10 | 10 | 297 | X | X | X | X | X | - |
| ADV7393 | 3 | 10 | 10 | 297 | X | X | X | X | X | $4.35 |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
AD725 Model Options
| Model | Status | Package | Pins | Temp. Range |
Price* (100-499) |
Available | ROHS Compilant | Samples Cart | Purchase Cart |
|---|---|---|---|---|---|---|---|---|---|
| AD725-EB | Prodn | Evaluation Boards | - | Comm. | $263.00 | 09/19/2008 | N | Contact ADI | Contact ADI |
| AD725AR | Prodn | 16 ld SOIC - Wide | 16 | Ind | $6.27 | 07/25/2008 |
N
Material Declaration |
Contact ADI | Add To Cart |
| AD725AR-REEL | Prodn | 16 ld SOIC - Wide | 16 | Ind | $6.27 | 09/05/2008 |
N
Material Declaration |
Contact ADI | Add To Cart |
| AD725AR-REEL7 | Prodn | 16 ld SOIC - Wide | 16 | Ind | $6.27 | - |
N
Material Declaration |
Contact ADI | Add To Cart |
| AD725ARZ | Prodn | 16 ld SOIC - Wide | 16 | Ind | $5.70 | 07/25/2008 |
Y
Material Declaration |
Add To Cart | Add To Cart |
| AD725ARZ-R7 | Prodn | 16 ld SOIC - Wide | 16 | Ind | $5.70 | 09/05/2008 |
Y
Material Declaration |
Contact ADI | Add To Cart |
| AD725ARZ-RL | Prodn | 16 ld SOIC - Wide | 16 | Ind | $5.70 | - |
Y
Material Declaration |
Contact ADI | Add To Cart |
Help
- Pre-Release: The model has not been released to general production, but samples may be available.
- Production: The model is currently being produced, and generally available for purchase and sampling.
- Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
- Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
For detailed drawings and chemical composition please consult our Package Site
- Commercial: 0 to +70 degrees Celsius
- Military : -55 to +125 degrees Celsius
- Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
- Automotive: -40 to +125 degrees Celsius
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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