LT1207
Dual 250mA/60MHz
Current Feedback Amplifier
FEATURES
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DESCRIPTIO
250mA Minimum Output Drive Current
60MHz Bandwidth, A
V
= 2, R
L
= 100Ω
900V/µs Slew Rate, A
V
= 2, R
L
= 50Ω
0.02% Differential Gain, A
V
= 2, R
L
= 30Ω
0.17° Differential Phase, A
V
= 2, R
L
= 30Ω
High Input Impedance: 10MΩ
Shutdown Mode: I
S
< 200µA per Amplifier
Stable with C
L
= 10,000pF
APPLICATIO S
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ADSL/HDSL Drivers
Video Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment Amplifiers
Buffers
The LT
®
1207 is a dual version of the LT1206 high speed
current feedback amplifier. Like the LT1206, each CFA in
the dual has excellent video characteristics: 60MHz band-
width, 250mA minimum output drive current, 400V/µs
minimum slew rate, low differential gain (0.02% typ) and
low differential phase (0.17° typ). The LT1207 includes a
pin for an optional compensation network which stabi-
lizes the amplifier for heavy capacitive loads. Both ampli-
fiers have thermal and current limit circuits which protect
against fault conditions. These capabilities make the LT1207
well suited for driving difficult loads such as cables in video
or digital communication systems.
Operation is fully specified from
±5V
to
±15V
supplies.
Supply current is typically 20mA per amplifier. Two
micropower shutdown controls place each amplifier in a
high impedance low current mode, dropping supply
current to 200µA per amplifier. For reduced bandwidth
applications, supply current can be lowered by adding a
resistor in series with the Shutdown pin.
The LT1207 is manufactured on Linear Technology's
complementary bipolar process and is available in a low
thermal resistance 16-lead SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
5V
V
IN
SHDN A
HDSL Driver
+
0.1µF*
2.2µF**
+
1/2 LT1207
–
720Ω
15k
240Ω
720Ω
720Ω
62Ω
L1
–
SHDN B
15k
1/2 LT1207
62Ω
+
+
–5V
0.1µF*
2.2µF**
U
* CERAMIC
** TANTALUM
L1 = TRANSPOWER SMPT–308
OR SIMILAR DEVICE
1207 • TA01
U
U
1
LINER [ LINEAR TECHNOLOGY ]
