CLC452 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – Single Supply, Low-Power, High Output, Current Feedback Amplifier

June 1999
N
CLC452
Single Supply, Low-Power, High Output,
Current Feedback Amplifier
General Description
The CLC452 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 wide range of
gains and signal levels, and has a linear-phase response up to
one half of the -3dB frequency.
The CLC452 offers superior dynamic performance with a
130MHz small-signal bandwidth, 400V/µs slew rate and 4.5ns
rise/fall times (2V_step). The combination of low quiescent power,
high output current drive, and high-speed performance make
the CLC452 well suited for many battery-powered personal
communication/computing systems.
The ability to drive low-impedance, highly capacitive loads,
makes the CLC452 ideal for single ended cable applications. It
also drives low impedance loads with minimum distortion. The
CLC452 will drive a 100Ω load with only -75/-74dBc second/third
harmonic distortion (A_v = +2, V_out = 2V_pp, f = 1MHz). With a 25Ω
load, and the same conditions, it produces only -65/-77dBc 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
CLC452 provides excellent -78/-85dBc second/third harmonic
distortion (A_v = +2, V_out = 2V_pp, f = 1MHz, R_L = 1kΩ) and fast
settling time.
Available in SOT23-5, the CLC452 is ideal for applications where
space is critical.
Features
s 100mA output current
s 3.0mA supply current
s 130MHz bandwidth (A_v = +2)
s -78/-85dBc HD2/HD3 (1MHz)
s 25ns settling to 0.05%
s 400V/µs 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
Maximum Output Voltage vs. RL
10
9
8
7
VCC = ±5V
6
5
4
3
Vs = +5V
2
1
10
100
1000
RL (Ω)
+5V
6.8µF
+
Typical Application
Single Supply Cable Driver
Response After 10m of Cable
Vin = 10MHz, 0.5Vpp
5kΩ
Vin ^0.1µF
5kΩ
3 ₊ ^{7 0.1µF}
CLC452 ⁶
75Ω
2_-
4 _1kΩ
0.1µF
10m of 75Ω
Coaxial Cable
Vo
75Ω
1kΩ
0.1µF
Vo
Pinout
SOT23-5
VEE
VCC
Pinout
DIP & SOIC
20ns/div
© 1999 National Semiconductor Corporation
Printed in the U.S.A.
Vnon-inv
Vinv
VEE
http://www.national.com