ISL59831 데이터 시트보기 (PDF) - Renesas Electronics

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ISL59831

Single Supply Video Driver with Reconstruction Filter and Charge Pump

Renesas Electronics 

ISL59831

By setting the two PDMAX equations equal to each other, we

can solve the output current and RLOAD to avoid the device

overheat.

Power Supply Bypassing and Printed Circuit Board

Layout

Strip line design techniques are recommended for the input

and output signal traces. As with any high frequency device, a

good printed circuit board layout is necessary for optimum

performance. Lead lengths should be as short as possible. The

power supply pin must be well bypassed to reduce the risk of

oscillation. For normal single supply operation, a single 4.7µF

tantalum capacitor in parallel with a 0.1µF ceramic capacitor

from VCC and VCP to GND will suffice.

For good AC performance, parasitic capacitance should be

kept to a minimum. Use of wire-wound resistors should be

avoided because of their additional series inductance. Use of

sockets should also be avoided if possible. Sockets add

parasitic inductance and capacitance can result in

compromised performance. Minimizing parasitic capacitance

at the amplifier's inverting input pin is also very important.

FN6266 Rev 0.00

Mar 29, 2007

Page 11 of 12

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