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LM2902 View Datasheet(PDF) - ON Semiconductor

Part NameLM2902 ON-Semiconductor
ON Semiconductor ON-Semiconductor
DescriptionSingle Supply Quad Low Power Operational Amplifier
LM2902 Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LM324, LM324A, LM224, LM2902, LM2902V, NCV2902
CIRCUIT DESCRIPTION
The LM324 series is made using four internally
compensated, two–stage operational amplifiers. The first
stage of each consists of differential input devices Q20 and
Q18 with input buffer transistors Q21 and Q17 and the
differential to single ended converter Q3 and Q4. 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 5.0 pF) can be employed, thus
saving chip area. The transconductance reduction is
accomplished by splitting the collectors of Q20 and Q18.
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.
VCC = 15 Vdc
RL = 2.0 k
TA = 25°C
5.0 µs/DIV
Figure 2. Large Signal Voltage Follower Response
Each amplifier is biased from an internal–voltage
regulator which has a low temperature coefficient thus
giving each amplifier good temperature characteristics as
well as excellent power supply rejection.
3.0 V to VCC(max)
VCC
1
2
3
4
VEE/Gnd
Single Supply
Figure 3.
VCC
1
2
3
4
VEE
1.5 V to VCC(max)
1.5 V to VEE(max)
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The LM324 series are low−cost, quad operational amplifiers with true differential inputs. They have several distinct advantages over standard operational amplifier types in single supply applications.
The quad amplifier can operate at supply voltages as low as 3.0 V or as high as 32 V with quiescent currents about one−fifth of those associated with the MC1741 (on a per amplifier basis). The common mode input range includes the negative supply, thereby eliminating the necessity for external biasing components in many applications. The output voltage range also includes the negative power supply voltage.

Datasheet PDF LM324 Summary

1. Short Circuited Protected Outputs
2. True Differential Input Stage
3. Single Supply Operation: 3.0 V to 32 V
4. Low Input Bias Currents: 100 nA Maximum (LM324A)
5. Four Amplifiers Per Package
6. Internally Compensated
7. Common Mode Range Extends to Negative Supply
8. Industry Standard Pinouts
9. ESD Clamps on the Inputs Increase Ruggedness without Affecting Device Operation

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