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EC5822 데이터시트(PDF) 5 Page - E-CMOS Corporation |
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EC5822 데이터시트(HTML) 5 Page - E-CMOS Corporation |
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5 / 12 page ![]() 10MHz, Low-Power, CMOS, Rail-to-Rail Dual Operational Amplifier EC5822 E-CMOS Corp. (www.ecmos.com.tw) 3K29N-Rev.P001 Page 5 of 12 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 EC5822 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 ƒ C=1/(2πR1C1). The DC gain is defined by VOUT=-(R2/R1)VIN Figure 7. Single Supply Inverting Amplifier |
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