Features

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Low-cost

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High output current: 60mA

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High input impedance: 6M

Ω

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Gains of +1, +2 with no external components

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Ultra-fast enable/disable times

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Very low input bias currents: 100nA

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Excellent gain accuracy: 0.1%

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High speed: 110MHz -3dB BW

Applications

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Desktop video systems

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Multiplexers

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Video distribution

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Flash A/D driver

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High-speed switch/driver

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High-source impedance applications

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Peak detector circuits

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Professional video processing

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High resolution monitors

NOTE: All necessary components are shown.

Typical Application

2:1 Mux Cable Driver

Pinout

DIP & SOIC

General Description

The Comlinear CLC407 is a low-cost, high-speed (110MHz)

buffer which features user-programmable gains of +2, +1, and -1

V/V. This high-performance part has the added versatility of a

TTL-compatible disable which quickly switches the buffer off in

18ns and back on in 40ns. The CLC407’s high 60mA output

current, coupled with its ultra-low 35mW power consumption

makes it the ideal choice for demanding applications that are

sensitive to both power and cost.

Utilizing Comlinear’s proven architectures, this current feedback

amplifier surpasses the performance of alternate solutions with a

closed-loop design that produces new standards for buffers in

gain accuracy, input impedance, and input bias currents. The

CLC407’s internal feedback network provides an excellent gain

accuracy of 0.1%.

High source impedance applications will

benefit from the CLC407’s 6M

Ω input impedance along with its

exceptionally low 100nA input bias current.

With 0.1dB flatness to 30MHz and low differential gain and phase

errors, the CLC407 is very useful for professional video process-

ing and distribution. A 110MHz -3dB bandwidth coupled with a

350V/

µs slew rate also make the CLC407 a perfect choice in

cost-sensitive applications such as video monitors, fax machines,

copiers, and CATV systems. Back-terminated video applications

will especially appreciate +2 gains which require no external gain

components reducing inventory costs and board space.

Comlinear CLC407

Low-Cost, Low-Power

Programmable Gain Buffer with Disable

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August 1996

© 1996 National Semiconductor Corporation

http://www.national.com

Printed in the U.S.A.