Features

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Low-cost

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Very low input bias current: 100nA

s

High input impedance: 6M

Ω

s

s

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Ultra-fast enable/disable times

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High output current: 60mA

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

Typical Application

Wideband Digitally Controlled

Programmable Gain Amplifier

Pinout

DIP & SOIC

General Description

The CLC405 is a low-cost, wideband (110MHz) op amp featur-

ing a TTL-compatible disable which quickly switches off in 18ns

and back on in 40ns. While disabled, the CLC405 has a very high

input/output impedance and its total power consumption drops to

a mere 8mW. When enabled, the CLC405 consumes only 35mW

and can source or sink an output current of 60mA.

These

features make the CLC405 a versatile, high-speed solution for

demanding applications that are sensitive to both power and cost.

Utilizing National’s proven architectures, this current feedback

amplifier surpasses the performance of alternative solutions and

sets new standards for low power at a low price. This power-

conserving op amp achieves low distortion with -72dBc and

-70dBc for second and third harmonics respectively. Many high

source impedance applications will benefit from the CLC405’s

6M

Ω input impedance. And finally, designers will have a bipolar

part with an exceptionally low 100nA non-inverting bias current.

With 0.1dB flatness to 50MHz and low differential gain and phase

errors, the CLC405 is an ideal part for professional video

processing and distribution. However, the 110MHz -3dB band-

CLC405 a perfect choice in cost-sensitive applications such as

video monitors, fax machines, copiers, and CATV systems.

CLC405

Low-Cost, Low-Power, 110MHz Op Amp with Disable

N

June 1999

© 1999 National Semiconductor Corporation

http://www.national.com

Printed in the U.S.A.