LT1223
100MHz Current
Feedback Amplifier
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
100MHz Bandwidth at A
V
= 1
1000V/碌s Slew Rate
Wide Supply Range:
卤5V
to
卤15V
1mV Input Offset Voltage
1碌A Input Bias Current
5M鈩?Input Resistance
75ns Settling Time to 0.1%
50mA Output Current
6mA Quiescent Current
The LT1223 is a 100MHz current feedback amplifier with
very good DC characteristics. The LT1223鈥檚 high slew
rate, 1000V/碌s, wide supply range,
卤15V,
and large output
drive,
卤50mA,
make it ideal for driving analog signals over
double- terminated cables. The current feedback amplifier
has high gain bandwidth at high gains, unlike conventional
op amps.
The LT1223 comes in the industry standard pinout and
can upgrade the performance of many older products.
The LT1223 is manufactured on Linear Technology鈥檚
proprietary complementary bipolar process.
APPLICATI
s
s
s
s
s
S
Video Amplifiers
Buffers
IF and RF Amplification
Cable Drivers
8-, 10-, 12-Bit Data Acquisition Systems
TYPICAL APPLICATI
Video Cable Driver
60
V
IN
+
LT1223
鈥?/div>
R
F
1k
75
鈩?/div>
CABLE
75
鈩?/div>
Voltage Gain vs Frequency
100MHz GAIN
BANDWIDTH
R
G
= 10
R
G
= 33
R
G
= 110
R
G
= 470
R
G
=
鈭?/div>
+
鈥?/div>
1k
R
G
50
40
VOLTAGE GAIN (dB)
30
20
10
0
V
OUT
R
G
1k
75鈩?/div>
鈥?0
鈥?0
100k
1M
10M
FREQUENCY (Hz)
LT1223 鈥?TPC01
R
A
V
= 1 +
F
R
G
AT AMPLIFIER OUTPUT.
6dB LESS AT V
OUT
.
LT1223 鈥?TA02
U
100M
1G
UO
UO
1
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