Comlinear CLC453
Single Supply, Low-Power, High Output, Programmable Buffer
December 1996
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鈥檚
internal feedback network provides an excellent gain accuracy
of 0.3%
The CLC453 offers superior dynamic performance with a 110MHz
small-signal bandwidth, 370V/碌s slew rate and 4.8ns 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 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鈩?load with only -72/-74dBc second/third
harmonic distortion (A
v
= +2, V
out
= 2V
pp
, f = 1MHz). With a 25鈩?/div>
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
v
= +2, V
out
= 2V
pp
, f = 1MHz, R
L
= 1k鈩? and fast
settling time.
+5V
6.8碌F
+5V
1
5k鈩?/div>
V
in
0.1碌F
0.1碌F
2
3
5k鈩?/div>
4
1k鈩?/div>
1k鈩?/div>
Features
s
s
s
s
s
s
s
s
s
100mA output current
3.0mA supply current
110MHz bandwidth (A
v
= +2)
-65/-84dBc HD2/HD3 (1MHz)
25ns settling to 0.05%
370V/碌s slew rate
Stable for capacitive loads up to 1000pF
Single 5V to 鹵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
Maximum Output Voltage vs. R
L
10
9
Applications
s
s
s
s
s
s
s
Output Voltage (V
pp
)
8
7
6
5
4
3
2
1
10
100
1000
V
s
= +5V
V
CC
=
鹵5V
R
L
(鈩?
Response After 10m of Cable
V
in
= 10MHz, 0.5V
pp
450 Performance Plot
Typical Application
Single Supply Cable Driver
100mV/div
+
8
7
6
0.1碌F
75鈩?/div>
10m of 75鈩?/div>
Coaxial Cable
V
o
75鈩?/div>
20ns/div
CLC453
0.1碌F
5
V
o
V
CC
453 Typ. App. Diagram
1k鈩?/div>
Pinout
SOT23-5
V
EE
V
non-inv
漏 1996 National Semiconductor Corporation
Printed in the U.S.A.
Pinout
DIP & SOIC
1k鈩?/div>
1k鈩?/div>
450 Typ. App. Plot
+
-
1k鈩?/div>
V
inv
V
EE
http://www.national.com
451 Pinout (SOT)
451 Pinout
CLC453AJE相關(guān)型號PDF文件下載
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