TS358
Single Supply Dual Operational Amplifiers
Document Number:
DS_P0000184
4
Version: B15
Application Description
The TS358 made using two internally compensated, two-stage operational amplifiers. The first stage performs
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 o
f 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
