LT1187

1

1187fb

For more information www.linear.com/LT1187

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Low Power

Video Difference Amplifier

The LT®1187 is a difference amplifier optimized for opera-

tion on ±5V, or a single 5V supply and gain ≥2. This ver-

satile amplifier features uncommitted high input imped-

ance (+) 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 dif-

ference 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 ampli-

fiers 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.

Cable Sense Amplifier for Loop Through Connections with DC Adjust

n

Differential or Single-Ended Gain Block (Adjustable)

n

–3dB Bandwidth, AV = ±2: 50MHz

n

Slew Rate: 165V/µs

n

Low Supply Current: 13mA

n

Output Current: ±20mA

n

CMRR at 10MHz: 40dB

n

LT1193 Pin Compatible

n

Low Cost

n

Single 5V Operation

n

Drives Cables Directly

n

Output Shutdown

n

Available in 8-Lead PDIP and SO Packages

n

Line Receivers

n

Video Signal Processing

n

Cable Drivers

n

Tape and Disc Drive Systems

Closed-Loop Gain vs Frequency

All registered trademarks and trademarks are the property of their respective owners.

1187 TA01

CABLE

DC

V

5V

7

6

LT1187

–5V

4

+

+

3

1

–

–

2

8

1k

OUT

V

IN

V

1k

FREQUENCY (MHz)

0

10

20

30

40

0.1

10

100

1187 TA02

–10

1

VS = 5V

RL = 1k