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參數(shù)資料
| 型號： | LT6600IS8-20#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF LP FLTR 20MHZ 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類型： | 差分 |
| 電流 - 輸入偏壓： | 50µA |
| 電壓 - 輸入偏移： | 10000µV |
| 電流 - 電源： | 46mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 11 V，±1.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
LT6600-20
7
66002fb
APPLICATIONS INFORMATION
Figure 1
Interfacing to the LT6600-20
The LT6600-20 requires two equal external resistors, RIN,
to set the differential gain to 402Ω/RIN. The inputs to the
lter are the voltages VIN+ and VIN– presented to these
external components, Figure 1. The difference between
VIN+ and VIN– is the differential input voltage. The aver-
age of VIN+ and VIN– is the common mode input voltage.
Similarly, the voltages VOUT+ and VOUT– appearing at
Pins 4 and 5 of the LT6600-20 are the lter outputs. The
difference between VOUT+ and VOUT– is the differential
output voltage. The average of VOUT+ and VOUT– is the
common mode output voltage.
Figure 1 illustrates the LT6600-20 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 2VP-P. The common mode
output voltage is 1.65V, and the differential output voltage
is 2VP-P for frequencies below 20MHz. 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
in the Typical Performance Characteristics section).
Figure 2 shows how to AC couple signals into the
LT6600-20. 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 0.1μF coupling capacitor and the 402Ω gain setting
resistor form a high pass lter, attenuating signals below
4kHz. Larger values of coupling capacitors will proportion-
ally reduce this highpass 3dB frequency.
Figure 2
Figure 3
–
+
402Ω
0.01μF
0.1μF
3.3V
–
+
VIN
–
VIN
+
3
4
1
7
2
8
5
6
66002 F01
VOUT
+
VOUT
–
V
t
3
2
1
VIN
+
VIN
–
V
t
3
2
1
VOUT
+
LT6600-20
VOUT
–
0
–
+
402Ω
0.01μF
0.1μF
3.3V
–
+
VIN
+
3
4
1
7
2
8
5
6
66002 F02
VOUT
+
VOUT
–
V
3
2
1
V
t
1
0
–1
VIN
+
LT6600-20
VOUT
+
VOUT
–
+
100Ω
0.1μF
0.01μF
5V
–
+
VIN
–
VIN
+
3
4
1
7
2
8
5
6
66002 F03
VOUT
+
VOUT
–
62pF
+
– 2V
V
t
3
2
1
0
VIN
+
VIN
–
V
t
3
2
1
0
VOUT
+
VOUT
–
LT6600-20
500mVP-P (DIFF)
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