SGM8055 sg-micro, SGM8055 Datasheet - Page 10

• Manufacturer Part Number: SGM8055
• Description: 250mhz, Rail-to-rail Output Cmos Operational Amplifier
• Manufacturer: sg-micro

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
V
Low Pass Active Filter
OUT
= ( Vp – Vn ) × R
V
IN
Figure 4. Low Pass Active Filter
Vn
Vp
Figure 3. Differential Amplifier
R1
R1
R3
Vref
2
R3=R1//R2
/ R
R4
SGM8051
R2
SGM8051
1
+ Vref.
R2
C
2
C. Make sure the
V
V
OUT
OUT
2
/R
1
)
１０
Driving Video
The SGM805x can be used in video applications like in Figure 5
V
R
IN
Figure 5. Typical Video Driving
G
G = 1 + R
SGM8051
R
F
F
/ R
G
SGM8051/2/3/4/5
75Ω
75Ω
CABLE
75Ω
V
OUT
.