GB4550 데이터 시트보기 (PDF) - Gennum -> Semtech

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GB4550

Monolithic Video Buffer/Clamp

Gennum -> Semtech 

+10V -10V

0.1

0.1

+5V

0.1

SIGNAL IN

FROM

NETWORK

ANALYSER

75

All resistors in ohms,

all capacitors in microfarads

unless otherwise stated.

42

6

*22

1

NON-POLAR

5

D.U.T. 8

7

3

**RCOMP

10n

**CCOMP

1

0.1

4 CLC110 8

5

OUTPUT TO

NETWORK

ANALYSER

10k

-5V

CLOAD

0.1

NOTES: This circuit can be used for Frequency Response, Delay and Differential Gain and Phase measurements.

* This input capacitor must be shorted out when performing Differential Gain and Phase tests.

** RCOMP and CCOMP are only used on GB4550.

Fig. 2 Test Circuit

+10V -10V

0.1

0.1

GX4314

XPOINT

VIDEO OUT 1

42

6

VIDEO

IN

0.1 to 22

1

GB4550

GB4550A

8

NON-POLAR

7

53

*RCOMP

All resistors in ohms,

all capacitors in microfarads

unless otherwise stated.

**10n

*CCOMP

CLOAD

GX4314

XPOINT

GX4314

XPOINT

GX4314

XPOINT

VIDEO OUT 2

VIDEO OUT 3

VIDEO OUT 4

NOTES: In most applications RCOMP and CCOMP will not be needed since the bandwidth depends on the bus capacitance.

In general, the maximum occurs when CLOAD is between 82 pF and 100 pF.

They are used to control the roll-off for higher load conditions.

* Not used on GB4550A.

** The value of this capacitor should be proportional to the input capacitor used.

The value shown is for a 22 µF input capacitor.

Fig. 3 Typical Application Circuit

520 - 34 - 4

4

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