LM2904ADMR2 ONSEMI [ON Semiconductor], LM2904ADMR2 Datasheet - Page 6

• Manufacturer Part Number: LM2904ADMR2
• Description: Single Supply Dual Operational Amplifiers
• Manufacturer: ONSEMI [ON Semiconductor]

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.
regulator which has a low temperature coefficient thus
giving each amplifier good temperature characteristics as
well as excellent power supply rejection.
The LM358 series is made using two internally
Each amplifier is biased from an internal−voltage
6.0
4.0
8.0
2.0
16
10
20
18
14
12
0
0
2.0
4.0
V
Figure 4. Input Voltage Range
Negative
CC
/V
6.0
EE,
LM358, LM258, LM2904, LM2904A, LM2904V, NCV2904
POWER SUPPLY VOLTAGES (V)
8.0
Positive
10
12
14
CIRCUIT DESCRIPTION
16
http://onsemi.com
18
20
6
120
100
−20
80
60
40
20
0
1.0
Figure 5. Large−Signal Open Loop Voltage Gain
10
Figure 3. Large Signal Voltage
Follower Response
100
f, FREQUENCY (Hz)
5.0 ms/DIV
1.0 k
10 k
V
V
T
A
CC
EE
V
R
T
= 25 C
A
CC
L
= 15 V
= Gnd
= 25 C
= 2.0 kW
100 k
= 15 Vdc
1.0 M