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TS2902

Low Power Quad Operational Amplifiers

TSC Corporation 

TS324/TS2902

Low Power Quad Operational Amplifiers

Application Description

The TS324/TS2902 made using four internally compensated, two-stage operational amplifiers. The first stage

performs not only the first stage gain function but also performs the level shifting and transconductance reduction

functions. By reducing the transconductance, a smaller compensation capacitor (only 5.0pF) can be employed, thus

saving chip area. Another feature of this input stage is that the input common mode range can include the negative

supply or ground, in single supply operation, without saturating either the input devices or the differential to single-

ended converter. The second stage consists of a standard current source load amplifier stage.

Each amplifier is biased from an internal-voltage regulator, and which has a low temperature coefficient thus giving

each amplifier good temperature characteristics as well as excellent power supply rejection.

Figure 7. Voltage Reference

Figure 8. Wien Bridge Oscillator

Figure 9. Bi-Quad Filter

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Version: A07

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