參數資料
型號: LT6600CS8-2.5
廠商: Linear Technology
文件頁數: 15/16頁
文件大?。?/td> 0K
描述: IC AMP DIFF LP FLTR 2.5MHZ 8SOIC
標準包裝: 100
放大器類型: 差分
電路數: 1
輸出類型: 差分
電流 - 輸入偏壓: 15µA
電壓 - 輸入偏移: 5000µV
電流 - 電源: 28mA
電壓 - 電源,單路/雙路(±): 3 V ~ 11 V,±1.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SO
包裝: 管件
LT6600-2.5
8
660025fe
APPLICATIONS INFORMATION
Figure 1. (S8 Pin Numbers)
Interfacing to the LT6600-2.5
Note: The referenced pin numbers correspond to the S8
package. See the Pin Functions for the equivalent DFN-12
package pin numbers.
The LT6600-2.5 requires two equal external resistors, RIN,
to set the differential gain to 1580Ω/RIN. The inputs to the
lter are the voltages VIN+ and VIN– presented to the see
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 LT6600-2.5 are the lter outputs. The differ-
ence 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 LT6600-2.5 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 forfrequenciesbelow2.5MHz.Thecommonmode
output voltage is determined by the voltage at VOCM. Since
VOCM is shorted to VMID, 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 VMID.
Figure2showshowtoACcouplesignalsintotheLT6600-2.5.
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 1580Ω gain set-
ting resistor form a highpass lter, attenuating signals
below 1kHz. Larger values of coupling capacitors will
proportionally reduce this highpass 3dB frequency.
In Figure 3 the LT6600-2.5 is providing 12dB of gain. The
common mode output voltage is set to 2V.
Figure 2. (S8 Pin Numbers)
Figure 3. (S8 Pin Numbers)
+
1580Ω
0.01μF
0.1μF
3.3V
+
VIN
VIN
+
3
4
1
7
2
8
5
6
660025 F01
VOUT
+
VOUT
V
t
3
2
1
VIN
+
VIN
V
t
3
2
1
VOUT
+
LT6600-2.5
VOUT
0
+
1580Ω
0.01μF
0.1μF
3.3V
+
VIN
+
3
4
1
7
2
8
5
6
660025 F02
VOUT
+
VOUT
V
3
2
1
t
0
LT6600-2.5
VOUT
+
VOUT
2
V
t
1
0
–1
VIN
+
+
402Ω
0.1μF
0.01μF
5V
+
VIN
VIN
+
3
4
1
7
2
8
5
6
660025 F03
VOUT
+
VOUT
+
2V
V
t
3
2
1
0
VOUT
+
VOUT
LT6600-2.5
V
t
3
2
1
0
VIN
+
VIN
500mVP-P (DIFF)
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