LT1395/LT1396/LT1397
Single/Dual/Quad 400MHz
Current Feedback Amplifier
FEATURES
DESCRIPTION
TheLT ®1395/LT1396/LT1397aresingle/dual/quad400MHz
current feedback amplifiers with an 800V/μs slew rate and
the ability to drive up to 80mA of output current.
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400MHz Bandwidth on 5V (A = 1)
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350MHz Bandwidth on 5V (A = 2, –1)
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0.1dB Gain Flatness: 100MHz (A = 1, 2 and –1)
High Slew Rate: 800V/μs
Wide Supply Range: 2Vꢀ4Vꢁ to 6Vꢀ12Vꢁ
80mA Output Current
Low Supply Current: 4.6mA/Amplifier
LT1395: SO-8, TSOT23-5 and TSOT23-6 Packages
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The LT1395/LT1396/LT1397 operate on all supplies from a
single 4V to 6V. At 5V, they draw 4.6mA of supply cur-
rent per amplifier. The LT1395CS6 also adds a shutdown
pin. When disabled, the LT1395CS6 draws virtually zero
supply current and its output becomes high impedance.
The LT1395CS6 will turn on in only 30ns and turn off in
40ns, making it ideal in spread spectrum and portable
equipment applications.
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LT1396: SO-8, MSOP and Tiny 3mm
0.75mm DFN-8 Packages
×
3mm
×
LT1397: SO-14, SSOP-16 and Tiny 4mm
0.75mm DFN-14 Packages
Low Profile ꢀ1mmꢁ ThinSOT™ Package
×
3mm ×
For space limited applications, the LT1395 is available in
TSOT-23 packages, the LT1396 is available in a tiny 3mm ×
3mm × 0.75mm dual fine pitch leadless DFN package, and
the LT1397 is available in a tiny 4mm × 3mm × 0.75mm
DFN package.
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APPLICATIONS
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Cable Drivers
Video Amplifiers
MUX Amplifiers
High Speed Portable Equipment
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The LT1395/LT1396/LT1397 are manufactured on Linear
Technology’s proprietary complementary bipolar process.
They have standard single/dual/quad pinouts and they are
optimized for use on supply voltages of 5V.
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IF Amplifiers
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Loop-Through Amplifier
Frequency Response
Unity-Gain Video Loop-Through Amplifier
R
10
R
1.02k
R
255Ω
R
255Ω
G2
G1
F1
F2
63.4Ω
0
NORMAL SIGNAL
–10
–20
–
–
1/2
LT1396
1/2
LT1396
V
OUT
V
+
V
–
3.01k
3.01k IN
IN
–30
–40
–50
–60
+
+
1% RESISTORS
FOR A GAIN OF G:
= G ꢀV + – V –ꢁ
V
R
R
COMMON MODE SIGNAL
0.67pF
12.1k
0.67pF
12.1k
OUT
IN IN
= R
F1
F2
= ꢀ5G – 1ꢁ R
G1
F2
R
F2
HIGH INPUT RESISTANCE
DOES NOT LOAD CABLE
EVEN WHEN POWER IS OFF
100 1k
10k 100k 1M 10M 100M 1G
FREQUENCY ꢀHzꢁ
R
=
G2
ꢀ5G – 1ꢁ
BNC INPUTS
TRIM CMRR WITH R
G1
1395/6/7 TA02
1395/6/7 TA01
139567fd
1