Datasheet 搜索 > ADI（亚德诺） > LT1227CS8#PBF 数据手册 > LT1227CS8#PBF 数据手册 1/12 页
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LT1227CS8#PBF 数据手册 - ADI（亚德诺）
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ADI（亚德诺）
封装:
SOIC
描述:
视频放大器-1-电流反馈-8-SOIC
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LT1227CS8#PBF数据手册
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1
LT1227
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
TYPICAL APPLICATIO
U
140MHz Video Current
Feedback Amplifier
■
140MHz Bandwidth: A
V
= 2, R
L
= 150Ω
■
1100V/µs Slew Rate
■
Low Cost
■
30mA Output Drive Current
■
0.01% Differential Gain
■
0.01° Differential Phase
■
High Input Impedance: 14MΩ, 3pF
■
Wide Supply Range: ±2V to ±15V
■
Shutdown Mode: I
S
< 250µA
■
Low Supply Current: I
S
= 10mA
■
Inputs Common Mode to Within 1.5V of Supplies
■
Outputs Swing Within 0.8V of Supplies
The LT
®
1227 is a current feedback amplifier with wide
bandwidth and excellent video characteristics. The low
differential gain and phase, wide bandwidth, and 30mA
output drive current make the LT1227 well suited to drive
cables in video systems.
A shutdown feature switches the device into a high imped-
ance, low current mode, allowing multiple devices to be
connected in parallel and selected. Input to output isola-
tion in shutdown is 70dB at 10MHz for input amplitudes up
to 10V
P-P
. The shutdown pin interfaces to open collector
or open drain logic and takes only 4µs to enable or disable.
The LT1227 comes in the industry standard pinout and
can upgrade the performance of many older products. For
a dual or quad version, see the LT1229/1230 data sheet.
The LT1227 is manufactured on Linear Technology’s
proprietary complementary bipolar process.
Video Cable Driver Differential Gain and Phase
vs Supply Voltage
–
+
75Ω
CABLE
V
OUT
75Ω
R
G
1k
LT1227
75Ω
V
IN
V
OUT
V
IN
= 1
1227 TA01
R
F
1k
■
Video Amplifiers
■
Cable Drivers
■
RGB Amplifiers
■
Test Equipment Amplifiers
■
50Ω Buffers for Driving Mixers
SUPPLY VOLTAGE (±V)
5
DIFFERENTIAL PHASE (DEG)
0.12
0.16
0.20
13
LT1227 • TA02
0.08
0.04
0
7
9
11
15
0.12
0.16
0.20
0.08
0.04
0
DIFFERENTIAL GAIN (%)
NTSC COMPOSITE
f = 3.58MHz
∆φ
∆G
, LTC and LT are registered trademarks of Linear Technology Corporation.
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