LT1395 Datasheet, PDF (1/12 Pages) Linear Technology – Single/Dual/Quad 400MHz Current Feedback Amplifier

LT1395/LT1396/LT1397
Single/Dual/Quad 400MHz
Current Feedback Amplifier
FEATURES
s _{400MHz Bandwidth on ± 5V (AV = 1)}
s _{350MHz Bandwidth on ± 5V (AV = 2, –1)}
s _{0.1dB Gain Flatness: 100MHz (AV = 1, 2 and –1)}
s _{High Slew Rate: 800V/µs}
s _{Wide Supply Range: ±2V(4V) to ±6V(12V)}
s _{80mA Output Current}
s _{Low Supply Current: 4.6mA/Amplifier}
s _{LT1395: SO-8 Package}
LT1396: SO-8 and MSOP Packages
LT1397: SO-14 and SSOP-16 Packages
U
APPLICATIO S
s _{Cable Drivers}
s _{Video Amplifiers}
s _{MUX Amplifiers}
s _{High Speed Portable Equipment}
s _{IF Amplifiers}
DESCRIPTIO
The LT^®1395/LT1396/LT1397 are single/dual/quad
400MHz current feedback amplifiers with an 800V/µs slew
rate and the ability to drive up to 80mA of output current.
The LT1395/LT1396/LT1397 operate on all supplies from
a single 4V to ±6V. At ±5V, they draw 4.6mA of supply
current per amplifier.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Unity-Gain Video Loop-Through Amplifier
R_G1
1.02k
R_F1
255Ω
R_G2
63.4Ω
R_F2
255Ω
–
1/2
3.01k V_IN– LT1396
+
3.01k ^VIN+
–
1/2
LT1396
+
V_OUT
0.67pF
12.1k
0.67pF
BNC INPUTS
HIGH INPUT RESISTANCE DOES NOT LOAD CABLE
EVEN WHEN POWER IS OFF
12.1k
1% RESISTORS
FOR A GAIN OF G:
V_OUT = G (V_IN+ – V_IN–)
R_F1 = R_F2
R_G1 = (G + 3) R_F2
R_G2
=
R_F2
G+3
TRIM CMRR WITH R_G1
1395/6/7 TA01
Loop-Through Amplifier
Frequency Response
10
0
NORMAL SIGNAL
–10
–20
–30
–40
COMMON MODE SIGNAL
–50
–60
100 1k
10k 100k 1M 10M 100M 1G
FREQUENCY (Hz)
1395/6/7 TA02
1