CLC520
Amplifier with Voltage Controlled Gain, AGC +Amp
General Description
The CLC520 is a wideband DC-coupled amplifier with volt-
age controlled gain (AGC). The amplifier has a high imped-
ance, differential signal input; a high bandwidth, gain control
input; and a single-ended voltage output. Signal channel
performance is outstanding with 160MHz small signal band-
width, 0.5 degree linear phase deviation (to 60MHz) and
0.04% signal nonlinearity at 4V
PP
output.
Gain control is very flexible and easy to use. Maximum gain
may be set over a nominal range of 2 to 100 with one
external resistor. In addition, the gain control input provides
more than 40dB of voltage controlled gain adjustment from
the maximum gain setting. For example, a CLC520 may be
set for a maximum gain of 2 (or 6dB) for a voltage controlled
gain range from 40dB to less than 34dB. Alternatively, the
CLC520 could be set for a maximum gain of 100 or (40dB)
for a voltage controlled gain range from 40dB to less than
0dB.
The gain control bandwidth of 100MHz is superb for AGC/
ALC loop stabilization. And since the gain is minimum with a
zero volt input and maximum with a +2 volt input, driving the
control input is easy.
Finally, the CLC520 differential inputs, and ground refer-
enced voltage output take the trouble out of designing
DC-coupled AGC circuits for display normalizers; signal lev-
eling automatic circuits; etc.
Enhanced Solutions (Military/Aerospace)
SMD Number: 5962-91694
Space level versions also available.
For more information, visit http://www.national.com/mil
Features
n
160MHz, -3dB bandwidth
n
2000V/sec slew rate
n
0.04% signal nonlinearity at 4V
PP
output
n
-43dB feedthrough at 30MHz
n
User adjustable gain range
n
Differential voltage input and single-ended voltage
output
Applications
n
Wide bandwidth AGC systems
n
Automatic signal leveling
n
Video signal processing
n
Voltage controlled filters
n
Differential amplifier
n
Amplitude modulation
Gain vs. V
g
01275640
01275639
Gain vs. V
g
Connection Diagram
01275629
Pinout
DIP & SOIC
May 2001
CLC520
Amplifier
with
V
oltage
Controlled
Gain,
AGC
+Amp
2001 National Semiconductor Corporation
DS012756
www.national.com
Ordering Information
Package
Temperature Range
Industrial
Part Number
Package
Marking
NSC
Drawing
14-pin plastic DIP
-40C to +85C
CLC520AJP
CLC520AJP
N14A
14-pin plastic SOIC
-40C to +85C
CLC520AJE
CLC520AJE
M14A
CLC520
www.national.com
2
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
CC
)
7V
I
OUT
Output is short circuit protected to
ground, but maximum reliability will
be maintained if I
OUT
does not
exceed...
60mA
Common Mode Input Voltage
V
CC
V
IN
Differential Input Voltage
10V
V
g
Differential Input Voltage
V
CC
V
ref
Differential Input Voltage
V
CC
Junction Temperature
+150C
Operating Temperature Range
-40C to +85C
Storage Temperature Range
-65C to +150C
Lead Solder Duration (+300C)
10 sec
ESD (human body model)
500V
Operating Ratings
Thermal Resistance
Package
(
JC
)
(
JA
)
MDIP
55C/W
105C/W
SOIC
45C/W
120C/W
Electrical Characteristics
A
V
= +10, V
CC
=
5V, R
L
= 100
, R
f
= 1k
, R
g
= 182
, V
g
= +2V; unless specified
Symbol
Parameter
Conditions
Typ
Max/Min (Note 2)
Units
Ambient Temperature
CLC520AJ
+25C
-40C
+25C
+85C
Frequency Domain Response
SSBW
-3dB Bandwidth
V
OUT
<
0.5V
PP
160
>
110
>
120
>
120
MHz
SSBW
V
OUT
<
0.5V
PP
(AJE only)
140
>
90
>
100
>
100
MHz
LSBW
V
OUT
<
4.0V
PP
140
>
85
>
100
>
100
MHz
-3dB Bandwidth
V
OUT
<
0.5V
PP
SBWC
Gain Control Channel
V
IN
= +0.2V, V
g
= +1VDC
100
>
80
>
80
>
80
MHz
Gain Flatness
V
OUT
<
0.5V
PP
GFPL
Peaking
0.1MHz to 30MHz
0
<
0.4
<
0.3
<
0.4
dB
GFPH
Peaking
0.1MHz to 20MHz
0
<
0.7
<
0.5
<
0.7
dB
GFRL
Rolloff
0.1MHz to 30MHz
0.1
<
0.4
<
0.3
<
0.4
dB
GFRH
Rolloff
0.1MHz to 60MHz
0.5
<
1.3
<
1
<
1.3
dB
LPD
Linear Phase Deviation
0.1MHz to 60MHz
0.5
<
1.2
<
1
<
1.2
deg
FDTH
Feedthrough
V
g
= 0V, V
IN
= -22dBm
-38
<
-31
<
-31
<
-31
dB
TRS
Rise and Fall Time
0.5V Step
2.5
<
3.7
<
3
<
3
ns
TRL
4.0V Step
3.7
<
5
<
5
<
5
ns
TS
Settling Time to
0.1%
2.0V Step
12
<
18
<
18
<
18
ns
OS
Overshoot
0.5V Step
0
<
15
<
15
<
15
%
SR
Slew Rate
4V Step
2000
>
1450
>
1450
>
1450
V/sec
HD2
2nd Harmonic Distortion
2V
PP
, 20MHz
-47
<
-40
<
-40
<
-35
dBc
HD3
3rd Harmonic Distortion
2V
PP
, 20MHz
-60
<
-50
<
-50
<
-45
dBc
Equivalent Output Noise
(10 for input noise) (Note
3)
SNF
Noise floor
1MHz to 200MHz
-132
<
-130
<
-130
<
-129
dBm
(1Hz)
INV
Integrated noise
1MHz to 200MHz
800
<
1000
<
1000
<
1100
V
DG
Differential Gain (Note 4)
at 3.58MHz
0.15
%
DP
Differential PIase (Note 4)
at 3.58MHz
0.15
deg
Static, DC Performance
SGNL
Integral Signal Nonlinearity
V
OUT
= 4V
PP
0.04
<
0.1
<
0.1
<
0.2
%
Gain Accuracy
R
f
= 1k
, R
g
= 182
GACCU
For Nominal Max Gain = 20dB
0
<
1.0
<
0.5
<
0.5
dB
VOS
Output Offset Voltage (Note 5)
40
<
150
<
120
<
150
mV
DVOS
Average Temperature Coefficient
100
<
400
<
300
V/C
CLC520
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3
Electrical Characteristics
(Continued)
A
V
= +10, V
CC
=
5V, R
L
= 100
, R
f
= 1k
, R
g
= 182
, V
g
= +2V; unless specified
Symbol
Parameter
Conditions
Typ
Max/Min (Note 2)
Units
IB
Input Bias Current (Note 5)
12
<
61
<
28
<
28
A
DIB
Average Temperature Doefficient
100
<
415
-
<
165
nA/C
IOS
Input Offset Current
0.5
<
4
<
2
<
2
A
DIOS
Average Temperature Coefficient
5
<
40
-
<
20
nA/C
PSS
Power Supply Sensitivity
Output Referred DC
10
<
28
<
28
<
28
mV/V
CMRR
Common Mode Rejection Ratio
Input Referred
70
>
59
>
59
>
59
dB
ICC
Supply Current (Note 5)
No Load
28
<
38
<
38
<
38
mA
RIN
V
IN
Signal Input
Resistance
200
>
50
>
100
>
100
k
CIN
Capacitance
1
<
2
<
2
<
2
pF
DMIR
V
IN
Differential Voltage Range
R
g
= 182
only
280
250
250
210
mV
CMIR
Common Mode Voltage Range
2.2
>
1.4
>
2
>
2
V
RINC
V
g
Control Input
Resistance
750
>
535
>
600
>
600
CINC
Capacitance
1
<
2
<
2
<
2
pF
VGHI
V
g
Input Voltage
For Max Gain
1.6
<
2
<
2
<
2
k
VGLO
For Min Gain
0.4
>
0
>
0
>
0
V
RO
Output Impedance
At DC
0.1
<
0.3
<
0.2
<
0.2
VO
Output Voltage Range
No Load
3.5
>
3
>
3.2
>
3.2
V
IO
Output Current
60
>
35
>
50
>
50
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: Measured at A
VMAX
= 10, V
g
= +2V
Note 4: Differential gain and phase are measured at: A
V
= +20, V
g
= +2V, R
L
= 150
, R
f
= 2k
, R
g
= 182
, equivalent video signal of 0-100 IRE with 40 IRE
PP
at 3.58 MHz.
Note 5: AJ-level: spec. is 100% tested at +25C.
CLC520
www.national.com
4
Typical Performance Characteristics
(T
A
= 25C, A
V
= +10, V
CC
=
5V, R
L
= 100
, R
f
=
1k
, R
g
= 182
, V
g
= +2V)
Frequency Response, A
VMAX
=
2
Frequency Response, A
VMAX
=
10
01275630
01275616
Frequency Response, A
VMAX
=
100
Large Signal Frequency Response
01275619
01275621
Small Signal Gain vs. R
f
2nd Harmonic Distortion
01275641
01275601
CLC520
www.national.com
5
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