參數(shù)資料
型號: LT6600-10
廠商: Linear Technology Corporation
元件分類: 運動控制電子
英文描述: Very Low Noise, Differential Amplifier and 10MHz Lowpass Filter
中文描述: 極低噪聲,差分放大器和10MHz低通濾波器
文件頁數(shù): 7/12頁
文件大?。?/td> 221K
代理商: LT6600-10
LT6600-10
7
6600f
Interfacing to the LT6600-10
The LT6600-10 requires 2 equal external resistors, R
IN
, to
set the differential gain to 402
/R
IN
. The inputs to the
filter are the voltages V
IN+
and V
IN–
presented to these
external components, Figure 1. The difference between
V
IN+
and V
IN–
is the differential input voltage. The average
of V
IN+
and V
IN–
is the common mode input voltage.
Similarly, the voltages V
OUT+
and V
OUT–
appearing at pins
4 and 5 of the LT6600-10 are the filter outputs. The
difference between V
OUT+
and V
OUT–
is the differential
output voltage. The average of V
OUT+
and V
OUT–
is the
common mode output voltage.
Figure 1 illustrates the LT6600-10 operating with a single
3.3V supply and unity passband gain; the input signal is
DC coupled. The common mode input voltage is 0.5V and
the differential input voltage is 2V
P-P
. The common mode
output voltage is 1.65V and the differential output voltage
APPLICATIOU
W
U
U
is 2V
P-P
for frequencies below 10MHz. The common mode
output voltage is determined by the voltage at pin 2. Since
pin 2 is shorted to pin 7, the output common mode is the
mid-supply voltage. In addition, the common mode input
voltage can be equal to the mid-supply voltage of Pin 7
(refer to the Distortion vs Input Common Mode Level
graphs in the Typical Performance Characteristics).
Figure 2 shows how to AC couple signals into the
LT6600-10. In this instance, the input is a single-ended
signal. AC coupling allows the processing of single-ended
or differential signals with arbitrary common mode levels.
The 0.1
μ
F coupling capacitor and the 402
gain setting
resistor form a high pass filter, attenuating signals below
4kHz. Larger values of coupling capacitors will propor-
tionally reduce this highpass 3dB frequency.
In Figure 3 the LT6600-10 is providing 12dB of gain. The
gain resistor has an optional 62pF in parallel to improve
+
402
402
0.01
μ
F
0.1
μ
F
3.3V
+
V
IN
V
IN
+
3
4
1
7
2
8
5
6
6600 F01
V
OUT+
V
OUT–
V
t
3
2
1
V
IN+
V
IN–
V
t
3
2
1
V
OUT+
LT6600-10
V
OUT–
0
0
+
402
402
0.01
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
3.3V
LT6600-10
+
V
IN
+
3
4
1
7
2
8
5
6
6600 F02
V
OUT+
V
OUT–
V
3
2
2
1
V
t
1
0
0
–1
V
IN+
V
OUT+
V
OUT–
100
100
0.1
μ
F
0.01
μ
F
0.01
μ
F
5V
LT6600-10
+
V
IN
V
IN
+
3
4
1
7
2
8
5
6
6600 F03
V
OUT+
V
OUT–
62pF
62pF
+
2V
V
t
3
2
1
0
V
IN+
V
IN–
V
t
3
2
1
0
V
OUT+
V
OUT–
500mV
P-P
(DIFF)
Figure 1
Figure 2
Figure 3
相關PDF資料
PDF描述
LT6600CS8-10 Very Low Noise, Differential Amplifier and 10MHz Lowpass Filter
LT6600IS8-10 Very Low Noise, Differential Amplifier and 10MHz Lowpass Filter
LT6600-20 Very Low Noise, Differential Amplifier and 20MHz Lowpass Filter
LT6600CS8-20 Very Low Noise, Differential Amplifier and 20MHz Lowpass Filter
LT6600IS8-20 Very Low Noise, Differential Amplifier and 20MHz Lowpass Filter
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