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LT1189

Low Power

Video Difference Amplifier

Closed-Loop Gain vs Frequency

Cable Sense Amplifier for Loop Through Connections

with DC Adjust

FREQUENCY (MHz)

0

10

20

30

40

0.1

10

100

LT1189 • TA02

1

50

LT1189 • TA01

CABLE

5V

7

6

LT1189

–5V

4

+

+

3

1

–

–

2

8

909

Ω

100

Ω

DESCRIPTIO

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FEATURE

The LT1189 is a difference amplifier optimized for opera-

tion on

±5V, or a single 5V supply, and gain ≥10. This

versatile amplifier features uncommitted high input im-

pedance (+) and (–) inputs, and can be used in differential

or single-ended configurations. Additionally, a second set

of inputs give gain adjustment and DC control to the

difference amplifier.

The LT1189’s high slew rate, 220V/

µs, wide bandwidth,

35MHz, and

±20mA output current require only 13mA of

supply current. The shutdown feature reduces the power

dissipation to a mere 15mW, and allows multiple amplifi-

ers to drive the same cable.

The LT1189 is a low power, gain of 10 stable version of the

popular LT1193, and is available in 8-pin miniDIPs and SO

packages. For lower gain applications see the LT1187

data sheet.

s

Differential or Single-Ended Gain Block (Adjustable)

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35MHz

s

Slew Rate

220V/

µs

s

Low Supply Current

13mA

s

Output Current

±20mA

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CMRR at 10MHz

48dB

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LT1193 Pin Out

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Low Cost

s

Single 5V Operation

s

Drives Cables Directly

s

Output Shutdown

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APPLICATI

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Line Receivers

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Video Signal Processing

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Cable Drivers

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Tape and Disc Drive Systems

APPLICATI

TYPICAL