GB4571(1994) 데이터 시트보기 (PDF) - Gennum -> Semtech

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GB4571
(Rev.:1994)

Video Buffer with Precision Strobed DC Restore

Gennum -> Semtech 

+5V

0.1

-5V

0.1

+5V

0.1

NETWORK

ANALYSER

Sweep: 1-100MHz

Level: 0dBM

*10

75

38

6 55

2 GB4571 7

1

4

0.01

RS

CL

1

4 CLC110 8

5

10k

VIDEO OUTPUT

TO NETWORK

ANALYSER I/P

0.1

+5V

+5V

All resistors in ohms, all capacitors in microfarads unless otherwise stated.

* This input capacitor must be shorted when performing

Differential Gain and Differential Phase tests.

Fig. 2 Frequency Response Test Circuit

GB4571 TYPICAL PERFORMANCE CURVES (VS = ±5 V, unless otherwise specified)

6.0

RS = ø

4.0

2.0

0.0

CL = 68pF

CL = 82pF

CL = 120pF

CL = 180pF

CL = 270pF

-2.0

1

10

100

FREQUENCY (MHz)

Fig. 3 Gain vs Frequency

1

RS = ø

0

-1

-2

CL = 270pF

-3

CL = 180pF

-4

CL = 120pF

-5

CL = 100pF

-6

CL = 82pF

-7

-8

2

10

FREQUENCY (MHz)

Fig. 4 Phase vs Frequency

0.1

0.05

0

-0.05

-0.1

-0.15

-0.2

1

521 - 17 - 00

RS = 30Ω

CL = 15pF

RS = 28Ω

CL = 18pF

10

100

FREQUENCY (MHz)

Fig. 5 Flattened Frequency Response

-0.5

-1

-1.5

RS = 30Ω

-2

CL = 15pF

-2.5

-3.0

-3.5

-4

2

10

FREQUENCY (MHz)

Fig. 6 Phase vs Frequency

4

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