Datasheet

LM2900, LM3900
QUADRUPLE NORTON OPERATIONAL AMPLIFIERS
SLOS059 – JULY 1979 – REVISED SEPTEMBER 1990
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 1
– Input Bias Current – nA
IB
I
INPUT BIAS CURRENT (INVERTING INPUT)
vs
FREE-AIR TEMPERATURE
T
A
– Free-Air Temperature – °C
0
–75
10
20
30
40
50
60
70
80
– 50 – 25 0 25 50 75 100
V
CC
= 15 V
V
O
= 7.5 V
I
I
+ = 0
Figure 2
0.9
T
A
– Free-Air Temperature –
°C
MIRROR GAIN
vs
FREE-AIR TEMPERATURE
– Mirror Gain
+
/I
1251007550250–25–50
1.2
1.15
1.1
1.05
1
0.95
0.85
–75
0.8
I
I
+ = 10 µA
V
CC
= 15 V
I –
I
Figure 3
– Differential Voltage Amplification
VD
A
f – Frequency – Hz
LARGE SIGNAL
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
FREQUENCY
1
100 1 k 10 k 100 k
1 M
10 M
10
10
2
10
3
10
4
R
L
≥10 kΩ
R
L
= 2 kΩ
V
CC
= 15 V
T
A
= 25
°C
Figure 4
– Differential Voltage Amplification
VD
A
V
CC
– Supply Voltage – V
LARGE SIGNAL
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
SUPPLY VOLTAGE
0
10
4
10
3
10
2
10
1
51015202530
T
A
= 25°C
R
L
= 10 kΩ
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.