mc3358p1 ON Semiconductor, mc3358p1 Datasheet - Page 4

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mc3358p1

Manufacturer Part Number
mc3358p1
Description
Dual Differential Input Operational Amplifiers
Manufacturer
ON Semiconductor
Datasheet

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compensated, two–stage operational amplifiers. The first
stage of each consists of differential input devices Q24 and
Q22 with input buffer transistors Q25 and Q21 and the
Inputs
4
The MC3458/3358 is made using two internally
+
Q2
Q22
Q21
Q3
Q23
Inverter Pulse Response
CIRCUIT DESCRIPTION
Q4
20 µs/DIV
Q25
Q24
5.0 pF
Q5
Q20
60 k
Q6
Representative Schematic Diagram
Q7
MC3458 MC3358
(1/2 of Circuit Shown)
Q1
Q8
Q19
2.0 k
Q9
37k
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 Q24 and Q22.
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.
swing to ground in single supply operation and yet does not
exhibit any crossover distortion in split supply operation. This
is possible because Class AB operation is utilized.
which has a low temperature coefficient thus giving each
amplifier good temperature characteristics as well as
excellent power supply rejection.
Q18
Q10
The output stage is unique because it allows the output to
Each amplifier is biased from an internal voltage regulator
31 k
Q13
Q11
Q17
40 k
25
MOTOROLA ANALOG IC DEVICE DATA
Q16
Q12
Q15
Output
Common to Both
Q27
Q28
Q30
Bias Circuitry
Amplifiers
2.4 k
Q29
V CC
V EE (Gnd)

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