The EL1883IS-EVAL eval board simplifies the evaluation of the EL1883, a sync separator for both standard and non-standard video signal. It provides composite sync, vertical sync, burst/back porch timing, and odd/even field detection.
An external resistor RSET that sets all internal timing. The demo board is built with a 681kΩ resistor for standard NTSC and PAL video signals. If the input video signal is very noisy, a low pass filter is required at pin 2. In this case, RF = 100 and CF = 570pF provide a 2.79MHz LPF. This sufficiently attenuates 3.58MHz or 4.43MHz color burst and passes the approximately 15.7kHz sync signals without appreciable attenuation. If the input video signal is clear, then simply just short the RF and open CF on the board.
The PC board layout has been optimized for high-speed signals. Careful attention is given to the signal paths, power supply bypassing, and grounding. Small surface mount ceramic capacitors are placed as close as possible to the supply pins. To avoid noise problem, RSET and CSET need to be placed close to the device.
- Fixed 70mV slicing of video input levels from 0.5VP-P to 2VP-P
- Low 1.5mA supply current
- Fully assembled and tested
- Video amplifiers
- PCMCIA applications
- A/D drivers
- Line drivers
- Portable computers
|Tools Orderable Part Number (s)||Production Status||Manufacturer||Suggested Single Tool Price||
|Description||Distributor Stock||Distributors||Distributor Purchase|
Note :Distributor Prices may vary from the stated budgetary price. The pricing and availability information on this site is based on information provided by Renesas’ authorized distributors and is subject to change without notice. By selecting a distributor from this page, you will be redirected from the Renesas site to the distributor’s website to complete a purchase. The distributors are independent from Renesas and maintain their own terms and conditions of sale. Renesas disclaims all representations and warranties, express and implied, with respect to transactions between distributors and their end customers.
Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.