LT1217_15 Datasheet, PDF (1/8 Pages) Linear Technology – Low Power 10MHz Current Feedback Amplifier

FEATURES
s _{1mA Quiescent Current}
s _{50mA Output Current (Minimum)}
s _{10MHz Bandwidth}
s _{500V/µs Slew Rate}
s _{280ns Settling Time to 0.1%}
s _{Wide Supply Range, ±5V to ±15V}
s _{1mV Input Offset Voltage}
s _{100nA Input Bias Current}
s _{100MΩ Input Resistance}
APPLICATI S
s _{Video Amplifiers}
s _Buffers
s _{IF and RF Amplification}
s _{Cable Drivers}
s _{8, 10, 12-Bit Data Acquisition Systems}
TYPICAL APPLICATI
Cable Driver
V_IN
+
LT1217
–
R_F
3k
R_G
3k
75Ω
75Ω
CABLE
V_OUT
75Ω
A_V
=
1
+
R_F
R_G
AT AMPLIFIER OUTPUT.
6dB LESS AT V_OUT.
LT1217 • TA01
LT1217
Low Power 10MHz
Current Feedback Amplifier
DESCRIPTIO
The LT1217 is a 10MHz current feedback amplifier with DC
characteristics better than many voltage feedback ampli-
fiers. This versatile amplifier is fast, 280ns settling to 0.1%
for a 10V step thanks to its 500V/µs slew rate. The LT1217
is manufactured on Linear Technology’s proprietary
complementary bipolar process resulting in a low 1mA
quiescent current. To reduce power dissipation further,
the LT1217 can be turned off, eliminating the load current
and dropping the supply current to 350µA.
The LT1217 is excellent for driving cables and other low
impedance loads thanks to a minimum output drive cur-
rent of 50mA. Operating on any supplies from ±5V to ±15V
allows the LT1217 to be used in almost any system. Like
other current feedback amplifiers, the LT1217 has high
gain bandwidth at high gains. The bandwidth is over 1MHz
at a gain of 100.
The LT1217 comes in the industry standard pinout and
can upgrade the performance of many older products.
Voltage Gain vs Frequency
60
50
40
R_G = 30Ω
30
R_G = 100Ω
20
R_G = 330Ω
10
R_G = 1.3k
0
R_G = ∞
V_S = ±15V
R_F = 3k
R_L = 100Ω
–10
–20
100k
1M
10M
100M
FREQUENCY (Hz)
LT1217 • TA02
1