RC6302 View Datasheet(PDF) - Raytheon Company

Part Name

Description

Manufacturer

RC6302

Dual Video Amplifier

Raytheon Company 

RC6302

PRODUCT SPECIFICATION

Applications Discussion

Capacitive Load

The RC6302 can drive a capacitive load from 10 to over 100

pF. In back terminated video applications, bandwidth will

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

put components. A minimum 10 pF capacitive load is

required. When driving a 75Ω cable, place the 75Ω source

termination resistor as close to the amplifier output as

possible.

DC Accuracy

Since the RC6302 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 RC6302 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 three inputs to minimize their

crosstalk. Minimal coupling from output to input should

exist to prevent positive feedback.

Typical Test Circuit

Video

Input

RI

250Ω

1/2

RC6302

RS

75Ω

RL

75Ω

Video

Output

10 pF

CL

RF

250Ω

RLOAD = RL + RS

65-7482A

5

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