CLC446
400MHz, 50mW Current-Feedback Op Amp
General Description
The National CLC446 is a very high speed unity-gain-stable
current-feedback op amp that is designed to deliver the
highest levels of performance from a mere 50mW quiescent
power. It provides a very wide 400MHz bandwidth, a
2000V/s slew rate and 900ps rise/fall times. The CLC446
achieves its superior speed-vs-power using an advanced
complementary bipolar IC process and National's current-
feedback architecture.
The CLC446 is designed to drive video loads with very low
differential gain and phase errors (0.02%, 0.03). Combined
with its very low power (50mW), the CLC446 makes an
excellent choice for NTSC/PAL video switchers and routers.
With its very quick edge rates (900ps) and high slew rate
(2000V/s), the CLC446 also makes an excellent choice for
high speed, high resolution component RGB video systems.
The CLC446 makes an excellent low power, high resolution
A/D converter driver with its very fast 9ns settling time (to
0.1%) and low harmonic distortion.
The combination of high performance and low power make
the CLC446 useful in many high speed general purpose
applications. Its current-feedback architecture maintains
consistent performance over a wide gain range and signal
levels. DC gain and bandwidth can be set independently.
Also, either maximally flat AC response or linear phase
response can be emphasized.
Features
n
400MHz bandwidth (A
V
= +2)
n
5mA supply current
n
0.02%, 0.03 differential gain, phase
n
2000V/s slew rate
n
9ns settling to 0.1%
n
0.05dB gain flatness to 100MHz
n
-65/-78dBc HD2/HD3
Applications
n
High resolution video
n
A/D driver
n
Medical imaging
n
Video switchers & routers
n
RF/IF amplifier
n
Communications
n
Instrumentation
Connection Diagram
Non-Inverting Frequency Response (A
V
= +2)
DS012730-1
DS012730-89
Pinout
DIP & SOIC
February 2001
CLC446
400MHz,
50mW
Current-Feedback
Op
Amp
2001 National Semiconductor Corporation
DS012730
www.national.com
Typical Application
Ordering Information
Package
Temperature Range
Industrial
Part Number
Package Marking
NSC Drawing
8-pin plastic DIP
-40C to +85C
CLC446AJP
CLC446AJP
N08E
8-pin plastic SOIC
-40C to +85C
CLC446AJE
CLC446AJE
M08A
DS012730-23
Elliptic-Function Low Pass Filter
CLC446
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
6V
Output Current
48mA
Common Mode Input Voltage
V
CC
Maximum Junction Temperature
+150C
Storage Temperature Range
-65C to +150C
Lead Solder Duration (+300C)
10 sec
ESD Rating (human body model)
1000V
Operating Ratings
Thermal Resistance
Package
(
JC
)
(
JA
)
MDIP
70C/W
125C/W
SOIC
60C/W
140C/W
Electrical Characteristics
A
V
= +2, V
CC
=
5V, R
L
= 100
, R
f
= 249
; unless specified
Symbol
Parameter
Conditions
Typ
Min/Max
(Note 2)
Units
Ambient Temperature
CLC446AJ
+25C
+25C
o to
70C
-40 to
85C
Frequency Domain Response
-3dB Bandwidth
V
O
<
0.2V
PP
400
340
300
300
MHz
V
O
<
2.0V
PP
280
210
190
190
MHz
Gain Flatness V
O
<
2.0V
PP
<
100MHz
0.05
0.2
0.2
0.2
dB
Linear Phase Dev. V
O
<
2.0V
PP
<
100MHz
0.2
0.5
0.8
0.8
deg
Differential Gain
NTSC, R
L
= 150
0.02
0.04
0.04
0.04
%
Differential Phase
NTSC, R
L
= 150
0.03
0.05
0.05
0.05
deg
Time Domain Response
Rise and Fall Time
2V Step
0.9
1.4
1.5
1.6
ns
Settling Time to
0.1%
2V Step
9
13
15
15
ns
Overshoot
2V Step
6
15
18
18
%
Slew Rate
2V Step,
0.5V
Crossing
2000
1400
1300
1200
V/s
Distortion And Noise Response
2nd Harmonic Distortion
2V
PP
,5MHz
-65
-59
-58
-58
dBc
2V
PP
,20MHz
-55
-48
-48
-48
dBc
2V
PP
,50MHz
-54
-43
-42
-42
dBc
3rd Harmonic Distortion
2V
PP
, 5MHz
-78
-70
-68
-68
dBc
2V
PP
,20MHz
-70
-62
-60
-60
dBc
2V
PP
,50MHz
-50
-45
-42
-42
dBc
Equivalent Input Noise
Voltage (e
ni
)
>
1MHz
3.8
4.8
5.0
5.1
nV/
Non-Inverting Current (i
bn
)
>
1MHz
2.0
2.6
2.8
3.3
pA/
Inverting Current (i
bi
)
>
1MHz
16
19
20
21
pA/
Static, DC Performance
Input Offset Voltage (Note 3)
2
7
10
11
mV
Average Drift
17
-
25
35
V/C
Input Bias Current (Note 3)
Non-Inverting
3
12
25
25
A
Average Drift
30
-
90
130
nA/C
Input Bias Current (Note 3)
Inverting
10
22
30
35
A
Average Drift
26
-
75
85
nA/C
Power Supply Rejection Ratio
DC
52
45
43
43
dB
Common Mode Rejection Ratio
DC
48
44
42
42
dB
Supply Current (Note 3)
R
L
=
4.8
5.8
6.2
6.2
mA
CLC446
www.national.com
3
Electrical Characteristics
(Continued)
A
V
= +2, V
CC
=
5V, R
L
= 100
, R
f
= 249
; unless specified
Symbol
Parameter
Conditions
Typ
Min/Max
(Note 2)
Units
Miscellaneous Performance
Input Resistance
Non-Inverting
1.5
1.0
0.85
0.70
M
Input Capacitance
Non-Inverting
1
2
2
2
pF
Input Range
Common-Mode
2.8
2.6
2.4
2.3
V
Output Voltage Range
R
L
100
3.1
2.8
2.8
2.6
V
R
L
=
3.2
3.0
2.9
2.8
V
Output Current
48
48
48
48
mA
Output Resistance, Closed Loop
DC
0.04
0.1
0.1
0.1
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: Min/max 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 +25C.
Typical Performance Characteristics
(V
CC
=
5, A
V
= +2, R
f
=249
, R
L
=100
; unless specified)
Non-Inverting Frequency Response
DS012730-2
Inverting Frequency Response
DS012730-3
Frequency Response vs. R
L
DS012730-4
Frequency Response vs. R
O
DS012730-5
CLC446
www.national.com
4
Typical Performance Characteristics
(V
CC
=
5, A
V
= +2, R
f
=249
, R
L
=100
; unless
specified)) (Continued)
Frequency Response vs. C
L
DS012730-6
Recommended R
S
vs. C
L
DS012730-21
Small Signal Pulse Response
DS012730-16
Large Signal Pulse Response
DS012730-17
Equivalent Input Noise
DS012730-7
2nd Harmonic Distortion
DS012730-8
CLC446
www.national.com
5
PDF 
ZIP