LT1194 데이터 시트보기 (PDF) - Linear Technology

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LT1194

Video Difference Amplifier

Linear Technology 

TYPICAL PERFOR A CE CHARACTERISTICS

Output Voltage Step

vs Settling Time

4

VS = ±5V

TA = 25°C

RL = 1k

2

10mV

0

10mV

–2

–4

40 60 80 100 120 140 160 180

SETTLING TIME (ns)

LT1194 • TPC19

Small-Signal Transient Response

LT1194 • TPC20

RISE TIME = 10.8ns, PROPAGATION DELAY = 6ns

LT1194

Large-Signal Transient Response

LT1194 • TPC21

RL = 150Ω, +SR = 430V/µs, –SR = 500V/µs

APPLICATIO S I FOR ATIO

The LT1194 is a video difference amplifier with a fixed gain

of 10 (20dB). The amplifier has two uncommitted high

input impedance (+) and (–) inputs that can be used either

differentially or single-ended. The LT1194 includes a

OUTPUT

limiting feature that allows the amplifier to reduce its

output as a function of DC voltage on the BAL/VC pins. The

limiting feature uses input differential-pair limiting to

prevent overload in subsequent stages. This technique

INPUT

allows extremely fast limiting action.

Power Supply Bypassing

The LT1194 is quite tolerant of power supply bypassing.

In some applications a 0.1µF ceramic disc capacitor

placed 1/2 inch from the amplifier is all that is required.

Input Limiting

20dB INPUT OVERDRIVE, VC = –4.2V

LT1194 • TA04

7

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