clc450 National Semiconductor Corporation, clc450 Datasheet

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clc450

Manufacturer Part Number
clc450
Description
Single Supply, Low-power, High Output, Current Feedback Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet

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© 1999 National Semiconductor Corporation
Printed in the U.S.A.
N
CLC450
Single Supply, Low-Power, High Output,
Current Feedback Amplifier
General Description
The CLC450 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 consistent performance over a wide range of
gains and signal levels, and has a linear-phase response up to
one half of the -3dB frequency.
The CLC450 offers superior dynamic performance with a
100MHz small-signal bandwidth, 280V/ s slew rate and 6.1ns
rise/fall times (2V
high output current drive, and high-speed performance make
the CLC450 well suited for many battery-powered personal
communication/computing systems.
The ability to drive low-impedance, highly capacitive loads,
makes the CLC450 ideal for single ended cable applications. It
also drives low impedance loads with minimum distortion. The
CLC450 will drive a 100
harmonic distortion (A
load, and the same conditions, it produces only -70/-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
CLC450 provides excellent -79/-75dBc second/third harmonic
distortion (A
settling time.
Available in SOT23-5, the CLC450 is ideal for applications where
space is critical.
V
in
0.1 F
5k
0.1 F
v
= +2, V
5k
step
1k
3
2
). The combination of low quiescent power,
out
v
CLC450
-
+
+5V
= +2, V
= 2V
7
4
load with only -75/-64dBc second/third
1k
6.8 F
0.1 F
+
SOT23-5
pp
Pinout
out
6
, f = 1MHz, R
= 2V
0.1 F
V
pp
non-inv
, f = 1MHz). With a 25
V
75
V
EE
Single Supply Cable Driver
o
Typical Application
L
= 1k ) and fast
Coaxial Cable
10m of 75
75
V
V
CC
inv
V
o
Features
Applications
100mA output current
1.5mA supply current
100MHz bandwidth (A
-79/-75dBc HD2/HD3 (1MHz)
20ns settling to 0.05%
280V/ s slew rate
Stable for capacitive loads up to 1000pf
Single 5V to ±5V supplies
Available in Tiny SOT23-5 package
Coaxial cable driver
Twisted pair driver
Transformer/Coil Driver
High capacitive load driver
Video line driver
Portable/battery-powered applications
A/D driver
10
DIP & SOIC
9
8
7
6
5
4
3
2
1
Pinout
Maximum Output Voltage vs. R
10
Response After 10m of Cable
V
in
= 10MHz, 0.5V
V
R
EE
pp
L
100
V
V
20ns/div
( )
CC
s
= +5V
= 5V
v
= +2)
http://www.national.com
L
June 1999
1000

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clc450 Summary of contents

Page 1

... Single Supply, Low-Power, High Output, Current Feedback Amplifier General Description The CLC450 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 ...

Page 2

... Electrical Characteristics PARAMETERS CONDITIONS Ambient Temperature CLC450AJ FREQUENCY DOMAIN RESPONSE -3dB bandwidth -0.1dB bandwidth V o gain peaking <200MHz, V gain rolloff <30MHz, V linear phase deviation <30MHz, V TIME DOMAIN RESPONSE rise and fall time 2V step settling time to 0.05% 1V step overshoot ...

Page 3

... Model CLC450AJP CLC450AJE CLC450AJM5 CLC450ALC JA ° 125 C/W ° 150 C/W ° 210 C/W – ±5V, unless specified) GUARANTEED MIN/MAX UNITS 0 to 70°C -40 to 85°C 105 100 MHz 42 40 MHz 25 25 MHz ...

Page 4

Typical Performance (A Non-Inverting Frequency Response 1.1k Gain 845 Phase 845 ...

Page 5

Typical Performance (A Closed Loop Output Resistance 100 10 1 0.1 0.01 10k 100k 1M 10M 100M Frequency (Hz) PSRR & CMRR 60 PSRR 50 CMRR 10k 100k 1M 10M 100M Frequency (Hz) ...

Page 6

Typical Performance (A Small Signal Pulse Response Time (20ns/div) 2nd Harmonic Distortion -30 10MHz -40 5MHz -50 2MHz -60 1MHz -70 - ...

Page 7

... V cm age around which the inputs are applied and the output voltages are specified. Operating from a single +5V supply, the Common Mode Input Range (CMIR) of the CLC450 is typically +0.8V to +4.2V. The typical output range with R to +4.0V Note ...

Page 8

... The bandwidth of the CLC450 maximum for output voltages near 1V for smaller and larger output amplitudes. Refer to the Frequency Response vs. V Load Termination The CLC450 can source and sink near equal amounts of current. For optimum performance, the load should be tied ...

Page 9

... Calculate the total RMS power amp o The maximum power that the DIP, SOIC, and SOT packages can dissipate at a given temperature is illustrated in Figure 8. The power derating curve for any CLC450 package can be derived by utilizing the following equation: (175 T ) amb JA where T = Ambient temperature (°C) ...

Page 10

... Application Circuits Single Supply Cable Driver The typical application shown on the front page shows the CLC450 driving 10m of 75 CLC450 is set for a gain of +2V/V to compensate for the divide-by-two voltage drop Single Supply Lowpass Filter Figures 9 and 10 illustrate a lowpass filter and design equations ...

Page 11

... Return Loss(dB) 20log The load current (I CLC450’s maximum output voltage and current by: From the above current relationship obvious that an amplifier with high output drive capability is required and voltage (V ) are related to the ...

Page 12

... National’s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of National Semiconductor Corporation. As used herein: 1. Life support devices or systems are devices or systems which, a) are intended for surgical implant into the body support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user ...

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