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Электронный компонент: CLC451AJ

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Features
s
100mA output current
s
1.5mA supply current
s
85MHz bandwidth (A
v
= +2)
s
-66/-75dBc HD2/HD3 (1MHz)
s
25ns settling to 0.05%
s
260V/
s slew rate
s
Stable for capacitive loads up to 1000pF
s
Single 5V to 5V supplies
s
Available in Tiny SOT23-5 package
Applications
s
Coaxial cable driver
s
Twisted pair driver
s
Transformer/Coil Driver
s
High capacitive load driver
s
Video line driver
s
Portable/battery-powered applications
s
A/D driver
V
EE
1k
1k
0.1
F
6.8
F
V
in
5k
5k
+
+5V
+5V
1
CLC451
7
6
8
5
3
4
2
1k
1k
0.1
F
0.1
F
V
o
10m of 75
Coaxial Cable
75
0.1
F
75
Typical Application
Single Supply Cable Driver
Pinout
DIP & SOIC
General Description
The CLC451 is a low cost, high speed (85MHz) buffer that
features user-programmable gains of +2, +1, and -1V/V. It has a
new output stage that delivers high output drive current (100mA),
but consumes minimal quiescent supply current (1.5mA) from a
single 5V supply. Its current feedback architecture, fabricated in
an advanced complementary bipolar process, maintains consis-
tent performance over a programmable range of gains and wide
signal levels, and has a linear-phase response up to one half of
the -3dB frequency. The CLC451's internal feedback network
provides an excellent gain accuracy of 0.3%
The CLC451 offers superior dynamic performance with a 85MHz
small-signal bandwidth, 260V/
s slew rate and 6.5ns rise/fall
times (2V
step
). The combination of the small SOT23-5 package,
low quiescent power, high output current drive, and high-speed
performance make the CLC451 well suited for many battery-
powered personal communication/computing systems.
The ability to drive low-impedance, highly capacitive loads,
makes the CLC451 ideal for single ended cable applications. It
also drives low impedance loads with minimum distortion. The
CLC451 will drive a 100
load with only -78/-65dBc second/third
harmonic distortion (A
v
= +2, V
out
= 2V
pp
, f = 1MHz). With a 25
load, and the same conditions, it produces only -55/-60dBc sec-
ond/third harmonic distortion. It is also optimized for driving high
currents into single-ended transformers and coils.
When driving the input of high-resolution A/D converters, the
CLC451 provides excellent -66/-75dBc second/third harmonic
distortion (A
v
= +2, V
out
= 2V
pp
, f = 1MHz, R
L
= 1k
) and fast
settling time.
Maximum Output Voltage vs. R
L
Output Voltage (V
pp
)
R
L
(
)
1
2
3
4
5
6
7
8
9
10
10
100
1000
V
s
= +5V
V
CC
=
5V
CLC451
Single Supply, Low-Power, High Output,
Programmable Buffer
N
June 1999
CLC451
Single Suppl
y
,
Lo
w-P
o
wer
,
High Output,
Pr
ogrammab
le Buff
er
Response After 10m of Cable
100mV/div
20ns/div
V
in
= 10MHz, 0.5V
pp
V
inv
V
CC
V
EE
V
o
V
non-inv
1k
1k
+
-
Pinout
SOT23-5
1999 National Semiconductor Corporation
http://www.national.com
Printed in the U.S.A.
http://www.national.com
2
PARAMETERS
CONDITIONS
TYP
MIN/MAX RATINGS
UNITS
NOTES
Ambient Temperature
CLC451AJ
+25C
+25C
0 to 70C
-40 to 85C
FREQUENCY DOMAIN RESPONSE
-3dB bandwidth
V
o
= 0.5V
pp
85
60
55
55
MHz
V
o
= 2.0V
pp
70
55
50
45
MHz
-0.1dB bandwidth
V
o
= 0.5V
pp
20
15
13
13
MHz
gain peaking
<200MHz, V
o
= 0.5V
pp
0
0.5
0.9
1.0
dB
gain rolloff
<30MHz, V
o
= 0.5V
pp
0.2
0.5
0.7
0.7
dB
linear phase deviation
<30MHz, V
o
= 0.5V
pp
0.1
0.4
0.5
0.5
deg
TIME DOMAIN RESPONSE
rise and fall time
2V step
6.5
9.0
9.7
10.5
ns
settling time to 0.05%
1V step
25
ns
overshoot
2V step
13
15
18
18
%
slew rate
2V step
260
180
165
150
V/
s
DISTORTION AND NOISE RESPONSE
2
nd
harmonic distortion
2V
pp
, 1MHz
-78
-72
-70
-70
dBc
2V
pp
, 1MHz; R
L
= 1k
-66
-60
-58
-58
dBc
2V
pp
, 5MHz
-60
-54
-52
-52
dBc
3
rd
harmonic distortion
2V
pp
, 1MHz
-65
-61
-59
-59
dBc
2V
pp
, 1MHz; R
L
= 1k
-75
-69
-67
-67
dBc
2V
pp
, 5MHz
-52
-48
-46
-46
dBc
equivalent input noise
voltage (e
ni
)
>1MHz
3.0
3.7
4
4
nV/
Hz
non-inverting current (i
bn
)
>1MHz
6.9
9
10
10
pA/
Hz
inverting current (i
bi
)
>1MHz
8.5
11
12
12
pA/
Hz
STATIC DC PERFORMANCE
input offset voltage
8
30
37
37
mV
A
average drift
80
V/C
input bias current (non-inverting)
3
14
17
18
A
A
average drift
25
nA/C
gain accuracy
0.3
1.5
2.0
2.0
%
A
internal resistors (R
f
, R
g
)
1000
20%
26%
30%
power supply rejection ratio
DC
49
46
44
44
dB
common-mode rejection ratio
DC
51
48
46
46
dB
supply current
R
L
=
1.5
1.7
1.8
1.8
mA
A
MISCELLANEOUS PERFORMANCE
input resistance (non-inverting)
0.5
0.37
0.33
0.33
M
input capacitance (non-inverting)
1.5
2.3
2.3
2.3
pF
input voltage range, High
4.2
4.1
4.0
4.0
V
input voltage range, Low
0.8
0.9
1.0
1.0
V
output voltage range, High
R
L
= 100
4.0
3.9
3.8
3.8
V
output voltage range, Low
R
L
= 100
1.0
1.1
1.2
1.2
V
output voltage range, High
R
L
=
4.1
4.0
4.0
3.9
V
output voltage range, Low
R
L
=
0.9
1.0
1.0
1.1
V
output current
100
80
65
40
mA
B
output resistance, closed loop
DC
400
600
600
600
m
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
+5V Electrical Characteristics
(A
v
= +2, R
L
= 100
, V
s
= +5V
1
, V
cm
= V
EE
+ (V
s
/2), R
L
tied to V
cm
, unless specified)
Absolute Maximum Ratings
supply voltage (V
CC
- V
EE
)
+14V
output current (see note C)
140mA
common-mode input voltage
V
EE
to V
CC
maximum junction temperature
+150C
storage temperature range
-65C to +150C
lead temperature (soldering 10 sec)
+300C
ESD rating (human body model)
500V
Notes
A) J-level: spec is 100% tested at +25C.
B) The short circuit current can exceed the maximum safe
output current.
1) V
s
= V
CC
- V
EE
Reliability Information
Transistor Count
49
MTBF (based on limited test data)
31Mhr
3
http://www.national.com
PARAMETERS
CONDITIONS
TYP
GUARANTEED MIN/MAX
UNITS
NOTES
Ambient Temperature
CLC451AJ
+25C
+25C
0 to 70C
-40 to 85C
FREQUENCY DOMAIN RESPONSE
-3dB bandwidth
V
o
= 1.0V
pp
100
80
68
65
MHz
V
o
= 4.0V
pp
55
45
42
40
MHz
-0.1dB bandwidth
V
o
= 1.0V
pp
20
15
13
13
MHz
gain peaking
<200MHz, V
o
= 1.0V
pp
0
0.5
0.9
1.0
dB
gain rolloff
<30MHz, V
o
= 1.0V
pp
0.2
0.7
0.8
0.8
dB
linear phase deviation
<30MHz, V
o
= 1.0V
pp
0.1
0.3
0.4
0.4
deg
differential gain
NTSC, R
L
=150
0.3
%
differential phase
NTSC, R
L
=150
0.3
deg
TIME DOMAIN RESPONSE
rise and fall time
2V step
5.0
6.5
7.0
7.7
ns
settling time to 0.05%
2V step
20
ns
overshoot
2V step
10
13
15
15
%
slew rate
2V step
350
260
240
220
V/
s
DISTORTION AND NOISE RESPONSE
2
nd
harmonic distortion
2V
pp
, 1MHz
-72
-66
-64
-64
dBc
2V
pp
, 1MHz; R
L
= 1k
-69
-63
-61
-61
dBc
2V
pp
, 5MHz
-66
-60
-58
-58
dBc
3
rd
harmonic distortion
2V
pp
, 1MHz
-65
-61
-59
-59
dBc
2V
pp
, 1MHz; R
L
= 1k
-73
-67
-65
-65
dBc
2V
pp
, 5MHz
-52
-48
-46
-46
dBc
equivalent input noise
voltage (e
ni
)
>1MHz
3.0
3.7
4
4
nV/
Hz
non-inverting current (i
bn
)
>1MHz
6.9
9
10
10
pA/
Hz
inverting current (i
bi
)
>1MHz
8.5
11
12
12
pA/
Hz
STATIC DC PERFORMANCE
output offset voltage
3
30
35
35
mV
average drift
80
V/C
input bias current (non-inverting)
1
12
19
19
A
average drift
40
nA/C
gain accuracy
0.3
1.5
2.0
2.0
%
internal resistors (R
f
, R
g
)
1000
20%
26%
30%
power supply rejection ratio
DC
48
45
43
43
dB
common-mode rejection ratio
DC
53
50
48
48
dB
supply current
R
L
=
1.6
1.9
2.0
2.0
mA
MISCELLANEOUS PERFORMANCE
input resistance (non-inverting)
0.7
0.50
0.45
0.45
M
input capacitance (non-inverting)
1.2
1.8
1.8
1.8
pF
common-mode input range
4.2
4.1
4.1
4.0
V
output voltage range
R
L
= 100
3.8
3.6
3.6
3.5
V
output voltage range
R
L
=
4.0
3.8
3.8
3.7
V
output current
130
100
80
50
mA
B
output resistance, closed loop
DC
400
600
600
600
m
5V Electrical Characteristics
(A
v
= +2, R
L
= 100
, V
CC
= 5V, unless specified)
Notes
B) The short circuit current can exceed the maximum safe
output current.
Ordering Information
Model
Temperature Range
Description
CLC451AJP
-40
C to +85
C
8-pin PDIP
CLC451AJE
-40
C to +85
C
8-pin SOIC
CLC451AJM5
-40
C to +85
C
5-pin SOT
CLC451ALC
-40
C to +85
C
dice
Package Thermal Resistance
Package

JC

JA
Plastic (AJP)
105
C/W
155
C/W
Surface Mount (AJE)
95
C/W
175
C/W
Surface Mount (AJM5)
140
C/W
210
C/W
Dice (ALC)
25
C/W
http://www.national.com
4
+5V Typical Performance
(A
v
= +2, R
L
= 100
, V
s
= +5V
1
, V
cm
= V
EE
+ (V
s
/2), R
L
tied to V
cm
, unless specified)
Frequency Response
Normalized Magnitude (1dB/div)
Frequency (Hz)
10M
V
o
= 0.5V
pp
Phase (deg)
-225
-180
-135
-90
-45
0
100M
1M
A
v
= 1
A
v
= -1
A
v
= 2
A
v
= 1
A
v
= 2
A
v
= -1
Gain
Phase
Frequency Response vs. R
L
Magnitude (1dB/div)
Frequency (Hz)
10M
V
o
= 0.5V
pp
Phase (deg)
-450
-360
-270
-180
-90
0
100M
1M
R
L
= 1k
R
L
= 100
R
L
= 25
R
L
= 1k
R
L
= 100
R
L
= 25
Gain
Phase
Frequency Response vs. V
o
(A
v
= 2)
Magnitude (1dB/div)
Frequency (Hz)
10M
100M
1M
V
o
= 1V
pp
V
o
= 2V
pp
V
o
= 0.1V
pp
V
o
= 2.5V
pp
Frequency Response vs. V
o
(A
v
= +1)
Magnitude (1dB/div)
Frequency (Hz)
10M
100M
1M
V
o
= 1V
pp
V
o
= 2V
pp
V
o
= 0.1V
pp
V
o
= 2.5V
pp
Frequency Response vs. V
o
(A
v
= -1)
Magnitude (1dB/div)
Frequency (Hz)
10M
100M
1M
V
o
= 1V
pp
V
o
= 2V
pp
V
o
= 0.1V
pp
V
o
= 2.5V
pp
Frequency Response vs. C
L
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
V
o
= 0.5V
pp
C
L
= 10pF
R
s
= 49.9
C
L
= 100pF
R
s
= 21
C
L
= 1000pF
R
s
= 6.7
C
L
1k
R
s
+
-
1k
1k
Gain Flatness
Magnitude (0.05dB/div)
Frequency (MHz)
10
20
30
V
o
= 0.5V
pp
Equivalent Input Noise
Noise Voltage (nV/
Hz)
Frequency (Hz)
4
3.5
0.1k
1k
10k
100k
1M
10M
3
2.5
Non-Inverting Current 6.9pA/
Hz
Inverting Current 8.5pA/
Hz
Voltage 3.0nV/
Hz
Noise Current (pA/
Hz)
10
11
12
9
6
8
7
2nd & 3rd Harmonic Distortion
Distortion (dBc)
Frequency (Hz)
1M
10M
V
o
= 2V
pp
-90
-80
-70
-60
-50
-40
2nd
R
L
= 1k
2nd
R
L
= 100
3rd
R
L
= 100
3rd
R
L
= 1k
2nd Harmonic Distortion, R
L
= 25
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-25
-30
-35
-40
-45
-50
-55
2MHz
5MHz
10MHz
1MHz
3rd Harmonic Distortion, R
L
= 25
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-20
-30
-40
-50
-60
2MHz
5MHz
10MHz
1MHz
2nd Harmonic Distortion, R
L
= 100
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-55
-60
-65
-70
-75
-80
-85
-90
2MHz
5MHz
10MHz
1MHz
3rd Harmonic Distortion, R
L
= 100
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-30
-35
-40
-45
-50
-55
-60
-65
-70
2MHz
5MHz
10MHz
1MHz
2nd Harmonic Distortion, R
L
= 1k
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-60
-65
-70
-75
-80
-85
2MHz
5MHz
10MHz
1MHz
3rd Harmonic Distortion, R
L
= 1k
Distortion (dBc)
Output Amplitude (V
pp
)
0
0.5
1
1.5
2
2.5
-50
-55
-60
-65
-70
-75
-80
-85
2MHz
5MHz
10MHz
1MHz
5
http://www.national.com
+5V Typical Performance
(A
v
= +2, R
L
= 100
, V
s
= + 5V
1
, V
cm
= V
EE
+ (V
s
/2), R
L
tied to V
cm
, unless specified)
Closed Loop Output Resistance
Output Resistance (
)
Frequency (Hz)
10k
100k
1M
10M
100M
0.01
0.1
1
10
100
Recommended R
s
vs. C
L
R
s
(
)
C
L
(pF)
10
100
1000
0
10
20
30
40
50
C
L
1k
R
s
+
-
1k
1k
Large & Small Signal Pulse Response
Output Voltage (0.5V/div)
Time (10ns/div)
Large Signal
Small Signal
PSRR & CMRR
PSRR & CMRR (dB)
Frequency (Hz)
1k
10k
100M
0
10
20
30
40
50
60
100k
1M
10M
PSRR
CMRR
I
BN
, V
os
vs. Temperature
Offset Voltage V
os
(mV)
Temperature (
C)
-100
-50
0
50
100
150
-1.1
I
BN
(
A)
1
-1
2
-0.9
3
-0.8
4
-0.7
5
-0.6
6
I
BN
V
os
Maximum Output Voltage vs. R
L
Output Voltage (V
pp
)
R
L
(
)
10
100
1000
1
1.5
2
2.5
3
3.5
4
4.5
5
5V Typical Performance
(A
v
= +2, R
L
= 100
, V
CC
= 5V, unless specified)
Frequency Response
Normalized Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
Phase (deg)
-45
0
-90
-225
-135
-180
Gain
Phase
V
o
= 1V
pp
A
v
= +1
A
v
= -1
A
v
= 2
Frequency Response vs. R
L
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
Phase (deg)
-90
0
-180
-450
-270
-360
Gain
Phase
V
o
= 1V
pp
R
L
= 1k
R
L
= 100
R
L
= 25
Frequency Response vs. V
o
(A
v
= 2)
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
V
o
= 5V
pp
V
o
= 1V
pp
V
o
= 2V
pp
V
o
= 0.1V
pp
Frequency Response vs. V
o
(A
v
= +1)
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
V
o
= 5V
pp
V
o
= 1V
pp
V
o
= 2V
pp
V
o
= 0.1V
pp
Frequency Response vs. V
o
(A
v
= -1)
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
V
o
= 2V
pp
V
o
= 1V
pp
V
o
= 0.1V
pp
Frequency Response vs. C
L
Magnitude (1dB/div)
Frequency (Hz)
1M
10M
100M
V
o
= 1V
pp
C
L
= 10pF
R
s
= 49.9
C
L
= 100pF
R
s
= 17.4
C
L
= 1000pF
R
s
= 6.7
C
L
1k
R
s
+
-
1k
1k