N

CLC412

Dual Wideband Video Op Amp

General Description

The CLC412 combines a high-speed complementary bipolar process

with National's current-feedback topology to produce a very high-

speed dual op amp. The CLC412 provides a 250MHz small-signal

bandwidth at a gain of +2V/V and a 1300V/

µs slew rate while

consuming only 50mW per amplifier from ±5V supplies.

The CLC412 offers exceptional video performance with its 0.02%

and 0.02° differential gain and phase errors for NTSC and PAL video

signals while driving one back terminated 75

Ω load. The CLC412

also offers a flat gain response of 0.1dB to 30MHz and very low

channel-to-channel crosstalk of -76dB at 10MHz. Additionally, each

amplifier can deliver a 70mA continuous output current. This level of

performance makes the CLC412 an ideal dual op amp for high-

density broadcast-quality video systems.

The CLC412's two very well-matched amplifiers support a number of

applications such as differential line drivers and receivers. In

addition, the CLC412 is well suited for Sallen Key active filters in

applications such as anti-aliasing filters for high-speed A/D

converters. Its small 8-pin SOIC package, low power requirement,

low noise and distortion allow the CLC412 to serve portable RF

applications such as IQ-channels.

The CLC412 is available in the following versions.

CLC412AJP

-40°C to +85°C

8-pin Plastic DIP

CLC412AJE

-40°C to +85°C

8-pin Plastic SOIC

CLC412AIB

-40°C to +85°C

8-pin CERDIP

CLC412A8B

-55°C to +125°C

8-pin CERDIP,

MIL-STD-883, Level B

CLC412A8L-2A

-55°C to +125°C

20-pin LCC,

MIL-STD-883, Level B

CLC412AMC

-55°C to +125°C

dice,

MIL-STD-883, Level B

DESC SMD number: 5962-94719

June 1999

Features

s

Wide bandwidth: 330MHz (A

250MHz (A

s

0.1dB gain flatness to 30MHz

s

Low power: 5mA/channel

s

Very low diff. gain, phase: 0.02%, 0.02°

s

-76dB channel-to-channel crosstalk

(10MHz)

s

Fast slew rate: 1300V/

µs

s

Unity-gain stable

Applications

s

HDTV, NTSC & PAL video systems

s

Video switching and distribution

s

IQ amplifiers

s

Wideband active filters

s

Cable drivers

s

DC coupled single-to-differential conversions

-

+

-

+

1

2

3

4

-Vcc

8

7

6

5

Pinout

DIP & SOIC

½CLC412

½CLC412

+

+

-

-

V

V

K

RR C C

ss

RC

R C

K

RC

R R C C

out

in

o

=

++

+

−

















+

12

1

2

2

11

2

2

9

22

1 2

1

2

11

1

1

© 1999 National SemiconductorCorporation

http://www.national.com

Printed in the U.S.A.

Typical Application

Sallen-Key Low-Pass Filter