RC6333MT_NL 查看數據表（PDF） - Fairchild Semiconductor

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RC6333MT_NL

Triple Video Amplifier

Fairchild Semiconductor 

PRODUCT SPECIFICATION

Test Circuit

Video

Input

RG

250W

1/3

RC6333

RS

75W

RL

75W

Video

Output

10 pF

CL

RF

250W

RLOAD = RL + RS

65-3528-04

RC6333

Applications Discussion

Capacitive Load

The RC6333 can drive a capacitive load from 10 to over 50

pF. In back terminated video applications, bandwidth will

only be limited by the RC time constants of the external out-

put components. When driving a 75W cable, place the 75W

source termination resistor as close to the amplifier output as

possible.

DC Accuracy

Since the RC6333 is a voltage-feedback amplifier, the invert-

ing and non-inverting inputs have similar impedances and

bias currents. To minimize offset voltage, match the source

resistances seen by inverting and non-inverting inputs.

Feedback Components

Because the RC6333 is a voltage-feedback amplifier, it facil-

itates using reactive (capacitive and inductive) feedback

components for implementing filters, integrators, sample/

hold circuits, etc. The feedback network and the parasitic

capacitance at the inverting (summing junction) input create

a pole and affect the transfer function of the circuit. For sta-

ble operation, minimize the parasitic capacitance and equiva-

lent resistance of the components used in the feedback

circuit.

Circuit Board

High-frequency applications require good grounding, power

supply decoupling, low parasitic capacitance and inductance,

and good isolation between the inputs to minimize their

crosstalk. Avoid coupling from output to input to prevent

positive feedback.

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