SGM8094 Shengbang Microelectronics, SGM8094 Datasheet - Page 10

• Manufacturer Part Number: SGM8094
• Description: (SGM8091 - SGM8094) Rail-to-Rail Output CMOS Operational Amplifier
• Manufacturer: Shengbang Microelectronics

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The low pass filter shown in Figure 4 has a DC gain of (-R
and the –3dB corner frequency is 1/2πR
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.
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
Low Pass Active Filter
Figure 4. Low Pass Active Filter
V
IN
V
OUT
Vn
Vp
Figure 3. Differential Amplifier
= ( Vp – Vn ) × R
R1
R1
Vref
R3
R3 = R1 // R2
SGM8091
R2
R4
SGM8091
R2
2
C
/ R
1
+ Vref.
2
C. Make sure the
V
OUT
V
OUT
2
/R
1
)
１０
Driving Video
The SGM809x can be used in video applications like in Figure 5
V
R
IN
G
Figure 5. Typical Video Driving
G = 1 + R
SGM8091
R
F
F
/ R
G
SGM8091/2/3/4
75Ω
75Ω
CABLE
75Ω
V
OUT
.