LT1187IN8 データシートの表示（PDF） - Linear Technology

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LT1187IN8

Low Power Video Difference Amplifi er

Linear Technology 

LT1187

Low Power

Video Difference Amplifier

FEATURES

■ Differential or Single-Ended Gain Block (Adjustable)

■ –3dB Bandwidth, AV = ±2: 50MHz

■ Slew Rate: 165V/µs

■ Low Supply Current: 13mA

■ Output Current: ±20mA

■ CMRR at 10MHz: 40dB

■ LT1193 Pin Compatible

■ Low Cost

■ Single 5V Operation

■ Drives Cables Directly

■ Output Shutdown

■ Available in 8-Lead PDIP and SO Packages

APPLICATIONS

■ Line Receivers

■ Video Signal Processing

■ Cable Drivers

■ Tape and Disc Drive Systems

DESCRIPTION

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

eration on ±5V, or a single 5V supply and gain ≥2. This

versatile 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

difference amplifier.

The LT1187’s high slew rate, 165V/ms, 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 amplifiers

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.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

Cable Sense Amplfier for Loop Through Connections with DC Adjust

VIN

CABLE

VDC

5V

3+

2–

7

6

1

LT1187

+

8– 4

–5V

1k

VOUT

1k

LT1187 • TA01

Closed-Loop Gain vs Frequency

40

VS = ±5V

RL = 1k

30

20

10

0

–10

0.1

1

10

FREQUENCY (MHz)

100

LT1187 • TA02

1187fa

1

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