CLC5644

Low Power, Low Cost, Quad Operational Amplifier

General Description

The CLC5644 is a quad, current feedback operational am-

plifier that is perfect for many cost sensitive applications that

require high performance, especially when power dissipation

is critical. Not only does the CLC5644 offer excellent

economy in board space, but has an excellent performance

vs power tradeoff which yields a 170MHz Small Signal Band-

width while dissipating only 25mW. Applications requiring

significant density of high speed devices such as video

routers, matrix switches and high order active filters will

benefit from the configuration of the CLC5644 and the low

channel-to-channel crosstalk of 76dB at 1MHz.

The CLC5644 provides excellent performance for video ap-

plications. Differential gain and phase of 0.04% and 0.07˚

makes this device well suited for many professional compos-

ite video systems, but consumer applications will also be

able to take advantage of these features due to the device’s

low cost. The CLC5644 offers superior dynamic perfor-

mance with a small signal bandwidth of 170MHz and slew

rate of 1000V/µs. These attributes are well suited for many

component video applications such as driving RGB signals

down significant lengths of cable. These and many other

applications can also take advantage of the 0.1dB flatness to

25MHz.

Combining wide bandwidth with low cost makes the

CLC5644 an attractive option for active filters. SAW filters

are often used in IF filters in the 10’s of MHz range, but

higher order filters designed around a quad operational am-

plifier may offer an economical alternative to the typical SAW

approach and offer greater freedom in the selection of filter

parameters. National Semiconductor’s Comlinear Products

Group has published a wide array of literature on active

filters and a list of these publications can be found on the last

page of this datasheet.

Features

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170MHz small signal bandwidth

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1000 V/us slew rate

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2.5mA/channel supply current

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−72/−79dBc HD2/HD3 (5MHz)

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0.04%, 0.07˚ differential gain, phase

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70mA output current

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16ns settling to 0.1%

Applications

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Portable equipment

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Video switchers & routers

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Video line driver

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Active filters

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IF amplifier

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Twisted pair driver/receiver

Connection Diagram

Non-Inverting Frequency Response

DS015009-1

DS015009-4

Pinout

DIP & SOIC

July 2001

© 2001 National Semiconductor Corporation

DS015009

www.national.com