sgm8541xs-tr sg-micro, sgm8541xs-tr Datasheet - Page 8

• Manufacturer Part Number: sgm8541xs-tr
• Description: 1.1mhz, 42?a, Rail-to-rail I/o Cmos Operational Amplifier
• Manufacturer: sg-micro

Typical Application Circuits
Differential Amplifier
The circuit shown in Figure 4 performs the difference function. If
the resistors ratios are equal ( R4 / R3 = R2 / R1 ), then
V
Instrumentation Amplifier
The circuit in Figure 5 performs the same function as that in Figure 4
but with the high input impedance.
Low Pass Active Filter
The low pass filter shown in Figure 6 has a DC gain of ( - R
and the –3dB corner frequency is 1/2πR
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.
Vn
Vp
OUT
= ( Vp – Vn ) × R
Vp
Vn
Figure 5. Instrumentation Amplifier
SGM8541
SGM8541
Figure 4. Differential Amplifier
R1
Vref
R3
2
R4
/ R
SGM8541
1
+ Vref.
R2
R3
R1
2
C. Make sure the filter is
SGM8541
R2
R4
V
OUT
Vref
2
/ R
V
OUT
1
)
７
V
IN
Figure 6. Low Pass Active Filter
R1
SGM8541/8542/8544
R3 = R1 // R2
SGM8541
R2
C
V
OUT