clc453 National Semiconductor Corporation, clc453 Datasheet

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clc453

Manufacturer Part Number
clc453
Description
Single Supply, Low-power, High Output, Programmable Buffer
Manufacturer
National Semiconductor Corporation
Datasheet

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© 1996 National Semiconductor Corporation
Printed in the U.S.A.
N
Comlinear CLC453
Single Supply, Low-Power, High Output,
Programmable Buffer
General Description
The Comlinear CLC453 is a low cost, high speed (110MHz)
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 (3.0mA) from a single 5V supply. Its current feedback
architecture, fabricated in an advanced complementary bipolar
process, maintains consistent 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 CLC453’s
internal feedback network provides an excellent gain accuracy
of 0.3%
The CLC453 offers superior dynamic performance with a 110MHz
small-signal bandwidth, 370V/ s slew rate and 4.8ns rise/fall
times (2V
low quiescent power, high output current drive, and high-speed
performance make the CLC453 well suited for many battery-
powered personal communication/computing systems.
The ability to drive low-impedance, highly capacitive loads,
makes the CLC453 ideal for single ended cable applications. It
also drives low impedance loads with minimum distortion. The
CLC453 will drive a 100
harmonic distortion (A
load, and the same conditions, it produces only -65/-77dBc
second/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
CLC453 provides excellent -65/-84dBc second/third harmonic
distortion (A
settling time.
V
in
0.1 F
+5V
step
5k
5k
0.1 F
v
). The combination of the small SOT23-5 package,
= +2, V
2
3
1
4
v
out
= +2, V
1k
CLC453
= 2V
load with only -72/-74dBc second/third
1k
SOT23-5
pp
Pinout
out
, f = 1MHz, R
= 2V
8
7
6
5
+5V
pp
0.1 F
V
non-inv
, f = 1MHz). With a 25
V
6.8 F
0.1 F
+
V
EE
o
75
L
= 1k ) and fast
Coaxial Cable
Single Supply Cable Driver
+
10m of 75
Typical Application
-
1k
1k
V
V
75
CC
inv
V
o
Features
Applications
100mA output current
3.0mA supply current
110MHz bandwidth (A
-65/-84dBc HD2/HD3 (1MHz)
25ns settling to 0.05%
370V/ 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
V
= 10MHz, 0.5V
R
EE
L
100
V
V
( )
CC
s
= +5V
= 5V
v
= +2)
pp
1k
20ns/div
December 1996
http://www.national.com
L
1k
1000

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clc453 Summary of contents

Page 1

... The CLC453’s internal feedback network provides an excellent gain accuracy of 0.3% The CLC453 offers superior dynamic performance with a 110MHz small-signal bandwidth, 370V/ s slew rate and 4 ...

Page 2

... Electrical Characteristics PARAMETERS CONDITIONS Ambient Temperature CLC453AJ 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 CLC453AJP CLC453AJE CLC453AJM5 CLC453ALC q JA ° 125 C/W ° 150 C/W ° 210 C/W – 3 GUARANTEED MIN/MAX UNITS 0 to 70°C -40 to 85° MHz 52 50 MHz 25 20 MHz 0.9 1 ...

Page 4

Typical Performance (A Frequency Response 0. Gain Phase 10M 100M ...

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 Gain Flatness Frequency (MHz) 2nd Harmonic Distortion -40 -45 10MHz -50 5MHz -55 2MHz -60 1MHz - ...

Page 7

... The CLC453 is a current feedback buffer built in an advanced complementary bipolar process. The CLC453 operates from a single 5V supply or dual ±5V supplies. Operating from a single 5V supply, the CLC453 has the following features: Gains of +1, -1, and 2V/V are achievable without external resistors Provides 100mA of output current while ...

Page 8

... Figure 6: AC Coupled Dual Supply Operation cm The CLC453 operates on dual supplies as well as single supplies. The non-inverting and inverting configurations are shown in Figures 7, 8 and 6 0 Figure 7: Dual Supply +5V) ...

Page 9

... Driving Cables and Capacitive Loads When driving cables, double termination is used to prevent reflections. For capacitive load applications, a small series resistor at the output of the CLC453 will improve stability and settling performance. The Frequency Response vs. C and Recommended R L vs. C plots, in the typical performance section, give the ...

Page 10

... Application Circuits Single Supply Cable Driver The typical application shown on the front page shows the CLC453 driving 10m of 75 CLC453 is set for a gain of +2V/V to compensate for the divide-by-two voltage drop yield desired input impedance t ...

Page 11

... Twisted Pair Driver The high output current and low distortion, of the CLC453, make it well suited for driving transformers. Figure 13 illustrates a typical twisted pair driver utilizing the CLC453 and a transformer. The transformer provides the signal and its inversion for the twisted pair. ...

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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