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EC5821 датащи(PDF) 5 Page - E-CMOS Corporation

номер детали EC5821
подробное описание детали  10MHz, Low Power, CMOS, Rail-to-Rail Operational Amplifier
PDF  11 Pages
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производитель  E-CMOS [E-CMOS Corporation]
домашняя страница  http://www.ecmos.com.tw/
Logo E-CMOS - E-CMOS Corporation

EC5821 датащи(HTML) 5 Page - E-CMOS Corporation

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10MHz, Low Power, CMOS,
Rail-to-Rail Operational Amplifier
EC5821
E-CMOS Corp. (www.ecmos.com.tw)
3K29N-Rev.P001
Page 5 of 11
The amplifier in Figure 5 is a high input impedance differential amplifier with gain of R2/R1. The two differential
voltage followers assure the high input impedance of the amplifier.
Two-Op-Amp Instrumentation Amplifier
EC5821 can also be used to make a high input impedance two-op-amp instrumentation amplifier as shown in
Figure 6.
Figure 6. Two-Op-Amp Instrumentation Amplifier
Where R1=R3 and R2=R4. If all resistors are equal, then Vo=2(VIP-VIN)
Single-Supply Inverting Amplifier
The inverting amplifier is shown in Figure 6. The capacitor C1 is used to block the DC signal going into the AC
signal source VIN. The value of R1 and C1 set the cut-off frequency to ƒC=1/(2πR1C1). The DC gain is defined
by VOUT=-(R2/R1)VIN
Figure 7. Single Supply Inverting Amplifier
Low Pass Active Filter
The low pass active filter is shown in Figure 8. The DC gain is defined by –R2/R1. The filter has a -
20dB/decade roll-off after its corner frequency ƒC=1/(2πR3C1).



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