CLC400 Fast Settling, Wideband Low Gain Monolithic Op Amp
May 2001
CLC400
Fast Settling, Wideband Low Gain Monolithic Op Amp
General Description
The CLC400 is a high speed, fast setting operational ampli-
fier designed for low gain applications. Constructed using a
unique, proprietary design and an advanced complementary
bipolar process, the CLC400 offers performance far beyond
that normally offered by ordinary monolithic op amps. In
addition, unlike many other high speed op amps the CLC400
offers both high performance and stability without the need
for compensation circuitry — even at a gain of +1.
The fast 12ns settling to 0.05% and its ability to drive capaci-
tive loads makes the CLC400 an ideal flash A/D driver. The
wide bandwidth of 200MHz and the very linear phase ensure
unsurpassed signal fidelity. Systems employing digital to
analog converters also benefit from the use of the CLC400
— especially if linearity and drive levels are important to
system performance.
The CLC400 provides a simple, high performance solution
for video distribution and line driving applications. The 50mA
output current and guaranteed specifications for 100Ω loads
provide ample drive capability and assured performance.
The CLC400 is based on
National’s
proprietary op amp
topology that uses current feedback instead of the usual
voltage feedback. This unique design has many advantages
over conventional designs (such as settling time that is
relatively independent of gain), yet it is used in basically the
same way (see the gain equations in
Figure 1
and
Figure 2).
However, an understanding of the topology will aid in achiev-
ing the best performance. The following discussion will pro-
ceed for the non-inverting gain configuration with the invert-
ing mode analysis being very similar.
Enhanced Solutions (Military/Aerospace)
SMD Number: 5962-89970
Space level versions also available.
For more information, visit http://www.national.com/mil
Features
n
n
n
n
n
n
n
−3dB bandwidth of 200MHz
0.05% settling in 12ns
Low power, 150mW
Low distortion, −60dBc at 20MHz
Stable without compensation
Overload and short circuit protected
±
1 to
±
8 closed loop gain range
Applications
n
n
n
n
n
n
n
Flash, precision A/D conversion
Video distribution
Line drivers
D/A current-to-voltage conversion
Photodiode, CCD preamps
IF processors
High speed communications
Pulse Response
01274309
Connection Diagram
01274319
Pinout
DIP & SOIC
© 2001 National Semiconductor Corporation
DS012743
www.national.com
CLC400
Absolute Maximum Ratings
(Note 1)
Operating Temperature Range
Storage Temperature Range
Lead Solder Duration (+300˚C)
ESD rating (human body model)
−40˚C to +85˚C
−65˚C to +150˚C
10 sec
500V
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
)
I
OUT
Output is short circuit protected to
ground, but maximum reliability will
be maintained if I
OUT
does not
exceed...
Common Mode Input Voltage
Differential Input Voltage
Junction Temperature
±
7V
Operating Ratings
Thermal Resistance
Package
60mA
MDIP
SOIC
(θ
JC
)
70˚C/W
65˚C/W
(θ
JA
)
125˚C/W
145˚C/W
±
V
CC
10V
+150˚C
Electrical Characteristics
A
V
= +2, V
CC
=
±
5V, R
L
= 100Ω, R
f
= 250Ω; Unless Specified
Symbol
Ambient Temperature
Frequency Domain Response
SSBW
LSBW
Gain Flatness
GFPL
GFPH
GFR
LPD
TRS
TRL
TSP
TS
OS
SR
SR1
Distortion And Noise Response
HD2
HD3
SNF
INV
VIO
DVIO
IBN
DIBN
IBI
DIBI
PSRR
CMRR
ICC
2nd Harmonic Distortion
3rd Harmonic Distortion
Equivalent Input Noise
Noise Floor
Integrated Noise
Input Offset Voltage (Note 3)
Average Temperature Coefficient
Input Bias Current (Note 3)
Average Temperature Coefficient
Input Bias Current (Note 3)
Average Temperature Coefficient
Power Supply Rejection Ratio
Common Mode Rejection Ration
Supply Current (Note 3)
No Load
Inverting
Non-Inverting
2V
PP
,20MHz
2V
PP
,20MHz
−60
−60
−157
40
2
20
10
100
10
50
50
50
15
−40
−50
−154
57
−45
−50
−154
57
−45
−50
−153
63
dBc
dBc
dBm
(1Hz)
µV
mV
µV/˚C
µA
nA/˚C
µA
nA/˚C
dB
dB
mA
Settling Time to
±
0.1%
Settling Time to
±
0.05%
Overshoot
Slew Rate
A
V
= +2
A
V
= −2
Peaking
Peaking
Rolloff
Linear Phase Deviation
Rise and Fall Time
-3dB Bandwidth
V
OUT
<
0.5V
PP
V
OUT
<
5V
PP
, A
V
= +5
V
OUT
<
0.5V
PP
200
50
0
0
0.6
0.2
1.6
6.5
10
12
0
700
1600
150
35
0.4
0.7
1.0
1.0
2.4
10
13
15
15
430
–
150
35
0.3
0.5
1.0
1.0
2.4
10
13
15
10
430
–
120
35
0.4
0.7
1.3
1.2
2.4
10
13
15
10
430
–
MHz
MHz
dB
dB
dB
deg
ns
ns
ns
ns
%
V/µs
V/µs
Parameter
Conditions
CLC400AJ
Typ
+25˚C
Max/Min Ratings
(Note 2)
−40˚C
+25˚C
+85˚C
Units
<
40MHz
>
40MHz
<
75MHz
to 75MHz
0.5V Step
5V Step
2V Step
2V Step
0.5V Step
Time Domain Response
>
1MHz
1MHz to 200MHz
Static, DC Performance
±
8.2
±
40
±
36
±
200
±
36
±
200
45
45
23
±
5.0
–
±
20
–
±
20
–
45
45
23
±
9.0
±
40
±
20
±
100
±
30
±
100
45
45
23
3
www.national.com
CLC400
Electrical Characteristics
A
V
= +2, V
CC
Symbol
Parameter
(Continued)
=
±
5V, R
L
= 100Ω, R
f
= 250Ω; Unless Specified
Conditions
Typ
Max/Min Ratings
(Note 2)
Units
Miscellaneous Performance
RIN
CIN
RO
VO
CMIR
IO
Output Impedance
Output Voltage Range
Common Mode Input Range
Output Current
Non Inverting Input
Resistance
Capacitance
At DC
No Load
For Rated Performance
200
0.5
0.1
±
3.5
±
2.1
±
60
>
50
<
2.0
<
0.2
>
3.0
>
1.2
>
35
>
100
<
2.0
<
0.2
>
3.2
>
2.0
>
50
>
100
<
2.0
<
0.2
>
3.2
>
2.0
>
50
kΩ
pF
Ω
V
V
mA
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, sample at 85˚C.
Typical Performance
Characteristics
(T
A
= 25˚C, A
V
= +2, V
CC
=
±
5V, R
L
= 100Ω; Unless Specified).
Non-Inverting Frequency Response
Inverting Frequency Response
01274301
01274302
Frequency Response for Various R
L
S
Frequency Response for Various R
L
S
01274303
01274303
www.national.com
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