EC5822 datasheet(4/12 Pages) E-CMOS

Part #	EC5822

Description	10MHz, Low-Power, CMOS, Rail-to-Rail Dual Operational Amplifier

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	E-CMOS [E-CMOS Corporation]

Direct Link	http://www.ecmos.com.tw/

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4 / 12 page

10MHz, Low-Power, CMOS,

Rail-to-Rail Dual Operational Amplifier

EC5822

E-CMOS Corp. (www.ecmos.com.tw)

3K29N-Rev.P001

Page 4 of 12

Differential amplifier

The differential amplifier allows the subtraction of two input voltages or cancellation of a signal common the

two inputs. It is useful as a computational amplifier in making a differential to single-end conversion or in

rejecting a common mode signal. Figure 4. shown the differential amplifier using EC5822.

Figure 4. Differential Amplifier

If the resistor ratios are equal (i.e. R1=R3 and R2=R4), then

Instrumentation Amplifier

The input impedance of the previous differential amplifier is set by the resistors R1, R2, R3, and R4. To

maintain the high input impedance, one can use a voltage follower in front of each input as shown in the

following two instrumentation amplifiers.

Three-Op-Amp Instrumentation Amplifier

The dual EC5822 can be used to build a three-op-amp instrumentation amplifier as shown in Figure 5.

Figure 5. Three-Op-Amp Instrumentation Amplifier

EC5822 Datasheet(PDF) 4 Page - E-CMOS Corporation