= 150鈩?/div>
1100V/碌s Slew Rate
Low Cost
30mA Output Drive Current
0.01% Differential Gain
0.01擄 Differential Phase
High Input Impedance: 14M鈩? 3pF
Wide Supply Range:
鹵2V
to
鹵15V
Shutdown Mode: I
S
< 250碌A(chǔ)
Low Supply Current: I
S
= 10mA
Inputs Common Mode to Within 1.5V of Supplies
Outputs Swing Within 0.8V of Supplies
The LT1227 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 4碌s 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鈥檚
proprietary complementary bipolar process.
APPLICATI
s
s
s
s
s
S
Video Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment Amplifiers
50鈩?Buffers for Driving Mixers
TYPICAL APPLICATI
Video Cable Driver
0.20
Differential Gain and Phase
vs Supply Voltage
0.20
NTSC COMPOSITE
f = 3.58MHz
V
IN
+
LT1227
75鈩?/div>
DIFFERENTIAL PHASE (DEG)
0.16
鈥?/div>
R
F
1k
75鈩?/div>
CABLE
V
OUT
0.12
0.08
鈭喯?/div>
0.04
鈭咷
0
5
7
11
13
9
SUPPLY VOLTAGE (鹵V)
15
R
G
1k
V
OUT
=1
V
IN
75鈩?/div>
1227 TA01
U
0.16
UO
UO
DIFFERENTIAL GAIN (%)
0.12
0.08
0.04
0
LT1227 鈥?TA02
1
next
LT1227CS8 產(chǎn)品屬性
LT1227
100
集成電路 (IC)
線性 - 放大器 - 視頻放大器和頻緩沖器
-
電流反饋
-
1
140MHz
1100 V/µs
10mA
60mA
4 V ~ 30 V,±2 V ~ 15 V
表面貼裝
8-SOIC(0.154",3.90mm 寬)
8-SOIC
管件
LT1227CS8相關(guān)型號(hào)PDF文件下載
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