1

LT1187

Low Power

Video Difference Amplifier

DESCRIPTIO

S

FEATURE

S

APPLICATI

s

Line Receivers

s

Video Signal Processing

s

Cable Drivers

s

Tape and Disc Drive Systems

APPLICATI

TYPICAL

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

LT1187 • TA02

–10

1

The LT1187 is a difference amplifier optimized for opera-

tion on

±5V, or a single 5V supply, and gain ≥2. 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 LT1187’s high slew rate, 165V/

µs, wide bandwidth,

50MHz, 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 LT1187 is a low power version of the popular LT1193,

and is available in 8-pin miniDIPs and SO packages. For

applications with gains of 10 or more, see the LT1189

data sheet.

s

Differential or Single-Ended Gain Block (Adjustable)

s

50MHz

s

Slew Rate

165V/

µs

s

Low Supply Current

13mA

s

Output Current

±20mA

s

CMRR at 10MHz

40dB

s

LT1193 Pin Compatible

s

Low Cost

s

Single 5V Operation

s

Drives Cables Directly

s

Output Shutdown

LT1187 • TA01

CABLE

DC

V

5V

7

6

LT1187

–5V

4

+

+

3

1

–

–

2

8

1k

OUT

V

IN

V

1k