SGM8061 데이터 시트보기 (PDF) - Shengbang Microelectronics Co, Ltd
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SGM8061 Datasheet PDF : 14 Pages
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Typical Application Circuits
Differential Amplifier
The circuit shown in Figure 3 performs the difference function.
If the resistors ratios are equal ( R4 / R3 = R2 / R1 ), then
VOUT = ( Vp – Vn ) × R2 / R1 + Vref.
R2
R1
Vn
Vp
R3
SGM8061
R4
Vref
VOUT
Driving Video
The SGM806x can be used in video applications like in Figure 5.
VIN
SGM8061
RF
RG
75Ω
75Ω
CABLE
VOUT
75Ω
G = 1 + RF / RG
Figure 5. Typical Video Driving
Figure 3. Differential Amplifier
Low Pass Active Filter
The low pass filter shown in Figure 4 has a DC gain of ( - R2 / R1 )
and the –3dB corner frequency is 1/2πR2C. Make sure the filter
is within the bandwidth of the amplifier. The Large values of
feedback resistors can couple with parasitic capacitance and
cause undesired effects such as ringing or oscillation in
high-speed amplifiers. Keep resistors value as low as possible
and consistent with output loading consideration.
R1
VIN
C
R2
SGM8061
VOUT
R3 = R1 // R2
Figure 4. Low Pass Active Filter
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SGM8061/2/3
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