CLC420
High-Speed, Voltage Feedback Op Amp

General Description

The CLC420 is an operational amplifier designed for applica-
tions requiring matched inputs, integration or transimped-
ance amplification. Utilizing voltage feedback architecture,
the CLC420 offers a 300MHz bandwidth, a 1100V/µs slew
rate and a 4mA supply current (power consumption of
40mW,

5V supplies).

Applications such as differential amplifiers will benefit from
70dB common mode rejection ratio and an input offset cur-
rent of 0.2µA. With its unity-gain stability, 2pA/

current

noise and 3µA of input bias current, the CLC420 is designed
to meet the needs of filter applications and log amplifiers.
The low input offset current and current noise, combined
with a settling time of 18ns to 0.01% make the CLC420 ideal
for D/A converters, pin diode receivers and photo multipliers
amplifiers. All applications will find 70dB power supply rejec-
tion ratio attractive.

Features

300MHz small signal bandwidth

1100V/µs slew rate

Unity-gain stability

Low distortion, -60dBc at 20MHz

0.01% settling in 18ns

0.2µA input offset current

2pA

current noise

Applications

Active filters/integrators

Differential amplifiers

Pin diode receivers

Log amplifiers

D/A converters

Photo multiplier amplifiers

Connection Diagram

Non-Inverting Frequency Response

DS012752-19

DS012752-18

Pinout

DIP & SOIC

DS012752-20

2nd and 3rd Harmonic Distortion

September 1999

CLC420

High-Speed,

oltage

Feedback

Amp

DS012752

www.national.com

Absolute Maximum Ratings

(Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage (V

)

OUT

(is short circuit protected to ground,
but maximum reliability will be
maintained if I

OUT

does not exceed

70mA, except A8D, B8D which should
not exceed 35mA over the military
temperature range)..

Common Mode Input Voltage

Differential Input Voltage

10V

Junction Temperature

+150°C

Operating Temperature Range

AJ:

-40°C to +85°C

Storage Temperature Range

-65°C to +150°C

Lead Solder Duration (+300°C)

10 sec

Electrical Characteristics

=+1, V

5V, R

=100

, R

= 0

; unless specified

Symbol

Parameter

Conditions

Typ

Max/Min (Note 2)

Units

Ambient Temperature

CLC420AJ

+25°C

-40°C

+25°C

+85°

Frequency Domain Response

SSBW

-3dB bandwidth

OUT

0..4V

300

200

130

MHz

LSBW

OUT

MHz

SSBWI

=-1, R

=500

OUT

0.4V

100

MHz

LSBWI

=-1, R

=500

OUT

MHz

gain flatness

OUT

0.4V

GFPL

peaking

0.1MHz to
100MHz

0.6

GFPH

peaking

100MHz

GFR

rolloff

0.1MHz to
100MHz

0.2

GFRI

rolloff, A

=-1, R

=500

0.1MHz to
30MHz

0.2

1.4

1.6

LPD

linear phase deviation

0.1MHz to
100MHz

0.9

1.8

2.5

Time Domain Response

TRS

rise and fall time

0.4V step

1.2

TRL

5V step

1.4

TRSI

rise and fall time,A

=-1,

=500

0.4V step

3.5

5.5

7.8

TRLI

5V step

9.5

TSS

settling time to

0.1%

2V step

TSP

0.01%

2V step

overshoot

0.4V step

slew rate, A

=+2

5V step

1100

600

750

600

V/µs

SRI

slew rate, A

=-1, R

=500

5V step

750

430

500

430

V/µs

Distortion And Noise Response

HD2

2nd harmonic distortion

, 20MHz

-50

-40

dBc

HD3

3rd harmonic distortion

, 20MHz

-53

-45

-40

dBc

HD2

2nd harmonic distortion

=-1 2V

20MHz, R

=500

-51

-40

dBc

HD3

3rd harmonic distortion

=-1,

=500

20MHz, R

=500

-51

-40

-35

dBc

input referred noise

voltage

1MHz to
200MHz

4.2

5.3

nV/

CLC420

www.national.com

Electrical Characteristics

(Continued)

=+1, V

5V, R

=100

, R

= 0

; unless specified

Symbol

Parameter

Conditions

Typ

Max/Min (Note 2)

Units

Distortion And Noise Response

ICN

current

1MHz to
200MHz

2.9

2.6

2.3

pA/

Static DC Performance

VIO

input offset voltage (Note 3)

3.2

3.5

DVIO

average temperature coefficient

µV/°C

input bias current (Note 3)

µA

DIB

average temperature coefficient

120

A/°C

IIO

input offset current (Note 3)

0.2

2.6

µA

DIIO

average temperature coefficient

nA/°C

AOL

open loop gain (Note 3)

µA

PSRR

power supply rejection ratio

CMRR

common mode rejection ratio

ICC

supply current (Note 3)

no
load,quiescent

Miscellaneous Performance

RIND

differential mode input

resistance

0.5

CIND

capacitance

RINC

common mode input

resistance

0.25

0.5

CINC

capacitance

output impedence

at DC

0.02

0.3

0.2

output voltage range

no load

3.6

2.8

VOL

output voltage range

RL=100

2.9

2.5

CMIR

common mode input range

for rated
performance

3.2

2.5

2.8

output current

Package Thermal Resistance

junction
to
case

CLC420AJP

65°

C/W

junction
to
ambient

CLC420AJP

120°

C/W

junction
to
case

CLC420AJE

60°

C/W

junction
to
ambient

CLC420AJE

140°

C/W

Note 1: "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of "Electrical Characteristics" specifies conditions of device operation.

Note 2: Max/min ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined
from tested parameters.

Note 3: AJ-level: spec. is 100% tested at +25°C.

CLC420

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