LT1229/LT1230
Dual and Quad 100MHz
Current Feedback Amplifiers
FEATURES
s
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s
s
s
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DESCRIPTIO
100MHz Bandwidth
1000V/碌s Slew Rate
Low Cost
30mA Output Drive Current
0.04% Differential Gain
0.1擄 Differential Phase
High Input Impedance: 25M鈩? 3pF
Wide Supply Range:
鹵2V
to
鹵15V
Low Supply Current: 6mA Per Amplifier
Inputs Common Mode to Within 1.5V of Supplies
Outputs Swing Within 0.8V of Supplies
The LT1229/LT1230 dual and quad 100MHz current feed-
back amplifiers are designed for maximum performance
in small packages. Using industry standard pinouts, the
dual is available in the 8-pin miniDIP and the 8-pin SO
package while the quad is in the 14-pin DIP and 14-pin SO.
The amplifiers are designed to operate on almost any
available supply voltage from 4V (鹵2V) to 30V (鹵15V).
These current feedback amplifiers have very high input
impedance and make excellent buffer amplifiers. They
maintain their wide bandwidth for almost all closed-loop
voltage gains. The amplifiers drive over 30mA of output
current and are optimized to drive low impedance loads,
such as cables, with excellent linearity at high frequencies.
The LT1229/LT1230 are manufactured on Linear
Technology鈥檚 proprietary complementary bipolar process.
For a single amplifier like these see the LT1227 and for
better DC accuracy see the LT1223.
APPLICATI
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Video Instrumentation Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment Amplifiers
TYPICAL APPLICATI
Video Loop Through Amplifier
R
G1
3.01k
R
F1
750鈩?/div>
R
G2
187鈩?/div>
R
F2
750鈩?/div>
10
0
Loop Through Amplifier Frequency
Response
NORMAL SIGNAL
鈥?0
GAIN (dB)
鈥?/div>
3.01k
V
IN 鈥?/div>
1/2
LT1229
鈥?/div>
3.01k V
IN+
1/2
LT1229
V
OUT
鈥?0
鈥?0
鈥?0
鈥?0
鈥?0
10
100
1k
10k
100k
1M
10M 100M
LT1229 鈥?TA02
+
+
1% RESISTORS
WORST CASE CMRR = 22dB
TYPICALLY = 38dB
V
OUT
= G (V
IN+
鈥?V
IN 鈥?/div>
)
R
F1
= R
F2
COMMON-MODE SIGNAL
12.1k
12.1k
BNC INPUTS
HIGH INPUT RESISTANCE DOES NOT LOAD CABLE EVEN
WHEN POWER IS OFF
R
G1
= (G 鈥?1) R
F2
R
F2
R
G2
=
G鈥?
TRIM CMRR WITH R
G1
LT1229 鈥?TA01
U
FREQUENCY (Hz)
UO
UO
1
LT1229C PDF文件相關(guān)型號
LT1229M,LT1230C,LT1230CS
LT1229C相關(guān)型號PDF文件下載
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描述
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