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參數(shù)資料
| 型號： | LTI969CMS |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 電壓反饋運算放大器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 285K |
| 代理商： | LTI969CMS |
1
LT1969
Dual 700MHz, 200mA,
Adjustable Current Operational Amplifier
I
700MHz Gain Bandwidth
I
±
200mA Minimum I
OUT
I
Adjustable Quiescent Current
I
Low Distortion: –72dBc at 1MHz, 4V
P-P
, 25
, A
V
= 2
I
Stable in A
V
≥
10, Simple Compensation for A
V
< 10
I
±
4.3V Minimum Output Swing, V
S
=
±
6V, R
L
= 25
I
Stable with 1000pF Load
I
6nV/
√
Hz Input Noise Voltage
I
2pA/
√
Hz Input Noise Current
I
4mV Maximum Input Offset Voltage
I
4
μ
A Maximum Input Bias Current
I
400nA Maximum Input Offset Current
I
±
4.5V Minimum Input CMR, V
S
=
±
6V
I
Specified at
±
6V,
±
2.5V
The LT
1969 is an adjustable current version of the
popular LT1886, a 200mA minimum output current, dual
op amp with outstanding distortion performance. The
adjustable current feature is highly desirable in applica-
tions where minimum power dissipation is required while
still being able to provide adequate line termination.
At nominal supply current, the amplifiers are gain of 10
stable and can easily be compensated for lower gains. The
LT1969 features balanced high impedance inputs with
4
μ
A input bias current and 4mV maximum input offset
voltage. Single supply applications are easy to implement
and have lower total noise than current feedback amplifier
implementations.
The output drives a 25
load to
±
4.3V with
±
6V supplies.
On
±
2.5V supplies, the output swings
±
1.5V with a 100
load. The amplifier is stable with a 1000pF capacitive load
making it useful in buffer and cable driver applications.
The LT1969 is manufactured on Linear Technology’s
advanced low voltage complementary bipolar process and
is available in a thermally enhanced MS10 package
I
DSL Modems
I
xDSL PCI Cards
I
USB Modems
I
Line Drivers
Single 12V Supply ADSL Modem Line Driver
ADSL Modem Line Driver Distortion
, LTC and LT are registered trademarks of Linear Technology Corporation.
–
+
1/2 LT1969
12.4
1:2*
12V
909
100
100
20k
10k
IN
–
IN
+
10k
20k
1
μ
F
1
μ
F
0.1
μ
F
0.1
μ
F
–
1/2 LT1969
+
12.4
1969 TA01a
909
100
13k
*COILCRAFT X8390-A
OR EQUIVALENT
6
49.9k
STANDBY ON
I
Q
ON = 14mA
I
Q
LOW POWER = 2mA
I
Q
STANDBY = 600
μ
A
LOGIC
OUTPUT
CTRL1
CTRL2
7
STANDBY
LOW POWER ON
LINE VOLTAGE (V
P-P
)
0
H
–60
–70
–80
–90
–100
1969 TA01b
2
4
6
8
10
12
14
16
V
S
= 12V
A
= 10
f = 200kHz
100
LINE
1:2 TRANSFORMER
HD2
HD3
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
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