CLC417 datasheet(6/8 Pages) NSC

6 / 8 page

Figure 5: Optional Evaluation Board Alterations

SPICE Models

SPICE models provide a means to evaluate amplifier

designs. Free SPICE models are available for National’s

monolithic amplifiers that:

Support Berkeley SPICE 2G and its many

derivatives

Reproduce typical DC, AC, Transient, and

Noise performance

Support room temperature simulations

The

readme file that accompanies the diskette lists

released models, and provides a list of modeled parame-

ters.

The application note OA-18, Simulation SPICE

Models for National’s Op Amps, contains schematics and

a reproduction of the

readme file.

Applications Circuits

Video Cable Driver

The CLC417 was designed to produce exceptional video

performance at all three closed-loop gains.

A typical

cable driving configuration is shown in Figure 6. In this

example, the amplifier is configured with a gain of 2.

Figure 6: Typical Cable Driver

Single to Differential Line Driver

The topology in Figure 7 accomplishes a single-ended to

differential conversion with no external components.

With this configuration, the value of Vin is limited to the

common mode input range of the CLC417.

Figure 7: Single to Differential Line Driver

250

Ω

250

Ω

250

Ω

250

Ω

SMA

Input

Rin

Ω

NOTE:

The same

technique can

also be applied

to Channel A.

Ω

0.1

µF

6.8

µF

-5V

0.1

µF6.8µF

+5V

Coax

Ω

Rout

Ω

Video

Output

250

Ω

250

Ω

250

Ω

250

Ω

0.1

µF

6.8

µF

-5V

0.1

µF

6.8

µF

+5V

Vin

Vout2 = -Vin

Vout2

Vout1 = Vin

Vout1

AV1 = 1V/V

AV2 = -1V/V

730038

REV B

730038 Bottom

Cut traces here

OUT2

GND

IN2

IN1

OUT1

+Vcc

-Vcc

ROUT2

RG2

RF2

ROUT1

RF1

RG1 RIN1

RIN2

Comlinear

(970) 226-0500

Cut traces here

730036 Top

http://www.national.com

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