LT1259/LT1260
Low Cost Dual and Triple
130MHz Current Feedback
Amplifiers with Shutdown
FEATURES
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DESCRIPTIO
90MHz Bandwidth on
±5V
0.1dB Gain Flatness > 30MHz
Completely Off in Shutdown, 0µA Supply Current
High Slew Rate: 1600V/µs
Wide Supply Range:
±2V(4V)
to
±15V(30V)
60mA Output Current
Low Supply Current: 5mA/Amplifier
Differential Gain: 0.016%
Differential Phase: 0.075°
Fast Turn-On Time: 100ns
Fast Turn-Off Time: 40ns
14-Pin and 16-Pin Narrow SO Packages
The LT
®
1259 contains two independent 130MHz current
feedback amplifiers, each with a shutdown pin. These
amplifiers are designed for excellent linearity while driving
cables and other low impedance loads. The LT1260 is a
triple version especially suited to RGB video applications.
These amplifiers operate on all supplies from single 5V to
±15V
and draw only 5mA per amplifier when active.
When shut down, the LT1259/LT1260 amplifiers draw
zero supply current and their outputs become high
impedance. Only two LT1260s are required to make a
complete 2-input RGB MUX and cable driver. These
amplifiers turn on in only 100ns and turn off in 40ns,
making them ideal in spread spectrum and portable
equipment applications.
The LT1259/LT1260 amplifiers are manufactured on
Linear Technology’s proprietary complementary bipolar
process.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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RGB Cable Drivers
Spread Spectrum Amplifiers
MUX Amplifiers
Composite Video Cable Drivers
Portable Equipment
TYPICAL APPLICATIO
2-Input Video MUX Cable Driver
A
V
IN A
R
G
1.6k
CHANNEL
SELECT
EN A
75Ω
B
Square Wave Response
+
–
1/2 LT1259
R
F
1.6k
75Ω
CABLE
V
OUT
V
IN B
R
G
1.6k
+
–
EN B
75Ω
LT1259/60 • TA01
75Ω
1/2 LT1259
R
F
1.6k
CABLE OUTPUT
R
L
= 150Ω
f = 30MHz
U
LT1259/50 • TA02
U
U
1
LINER [ LINEAR TECHNOLOGY ]
