CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied
NOTES:
1. This input current will only exist when the voltage at any of the input leads is driven negative. This current is due to the collector base junction of
the input p-n-p transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral
n-p-n parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the amplifiers to go to the V+ voltage level
(or to ground for a large overdrive) for the time duration that an input is driven negative. This transistor action is not destructive and normal output
states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3V.
2. The maximum output current is approximately 40mA independent of the magnitude of V+. Continuous short circuits at V+ > 15V can cause
excessive power dissipation and eventual destruction. Short circuits from the output to V+ can cause overheating and eventual destruc-
tion of the device.
3.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
Values Apply for Each Operational Amplifier. Supply Voltage V+ = 5V, V- = 0V,
Unless Otherwise Specified
CA124
CA224, CA324, LM324
MAX
5
7
-
MIN
-
-
-
TYP
2
-
7
MAX
7
9
-
MIN
-
-
-
LM2902
TYP
-
-
7
MAX
-
10
-
UNITS
mV
mV
µV/
o
C
PARAMETER
Input Offset
Voltage (Note 6)
Average Input
Offset Voltage
Drift
Differential Input
Voltage (Note 5)
Input Common
Mode Voltage
Range (Note 5)
TEST
CONDITIONS
TEMP.
(
o
C)
25
Full
MIN
-
-
-
TYP
2
-
7
R
S
= 0Ω
Full
Full
-
-
V+
-
-
V+
-
-
V+
V
V+ = 30V
V+ = 30V
V+ = 26V
25
Full
Full
25
0
0
-
70
-
-
-
85
V+ -1.5
V+ -2
-
-
0
0
-
65
-
-
-
70
V+ -1.5
V+ -2
-
-
-
-
0
-
-
-
-
-
-
-
V+ -2
-
V
V
V
dB
Common Mode
Rejection Ratio
Power Supply
Rejection Ratio
Input Bias
Current (Note 4)
Input Offset
Current
Average Input
Offset Current
Drift
DC
DC
25
65
100
-
65
100
-
-
-
-
dB
I
I
+ or I
I
-
I
I
+ or I
I
-
I
I
+ - I
I
-
I
I
+ - I
I
-
25
Full
25
Full
Full
-
-
-
-
-
45
-
3
-
10
150
300
30
100
-
-
-
-
-
-
45
-
5
-
10
250
500
50
150
-
-
-
-
-
-
-
40
-
45
10
-
500
-
200
-
nA
nA
nA
nA
pA/
o
C
3-18
CA124, CA224, CA324, LM324, LM2902
Electrical Specifications
Values Apply for Each Operational Amplifier. Supply Voltage V+ = 5V, V- = 0V,
Unless Otherwise Specified
(Continued)
CA124
PARAMETER
Large Signal
Voltage Gain
TEST
CONDITIONS
R
L
≥
2kΩ, V+ = 15V
(For Large V
O
Swing)
R
L
≥
2kΩ, V+ = 15V
(For Large V
O
Swing)
Output
Voltage
High
Swing
Level
R
L
= 2kΩ
R
L
= 2kΩ, V+ = 30V
R
L
= 2kΩ, V+ = 26V
R
L
= 10kΩ, V+ = 30V
Low
Level
Output
Current
R
L
= 10kΩ
TEMP.
(
o
C)
25
MIN
94
TYP
100
MAX
-
CA224, CA324, LM324
MIN
88
TYP
100
MAX
-
MIN
-
LM2902
TYP
-
MAX
-
UNITS
dB
Full
88
-
-
83
-
-
83
-
-
dB
25
Full
Full
Full
Full
0
26
-
27
-
-
-
-
28
5
V+ -1.5
-
-
-
20
0
26
-
27
-
-
-
-
28
5
V+ -1.5
-
-
-
20
-
-
22
23
-
-
-
-
28
5
-
-
-
-
100
V
V
V
V
mV
Source V
I
+ = +1V, V
I
- = 0V,
V+ = 15V
V
I
+ = 1V, V
I
- = 0,
V+ = 15V
Sink
V
I
+ = 0V, V
I
- = 1V,
V+ = 15V
V
I
+ = 0V, V
I
- = 1V,
V
O
= 200mV
V
I
- = 1V, V
I
+ = 0,
V+ = 15V
25
20
40
-
20
40
-
-
-
-
mA
Full
10
20
-
10
20
-
10
20
-
mA
25
10
20
-
10
20
-
-
-
-
mA
µA
mA
25
12
50
-
12
50
-
-
-
-
Full
5
8
-
5
8
-
5
8
-
Crosstalk
f = 1 to 20kHz
(Input Referred)
R
L
=
∞
R
L
=
∞
, V+ = 26V
25
-
-120
-
-
-120
-
-
-
-
dB
Total Supply
Current
NOTES:
Full
Full
-
-
0.8
-
2
-
-
-
0.8
-
2
-
-
-
0.7
1.5
1.2
3
mA
mA
4. Due to the PNP input stage the direction of the input current is out of the IC. No loading change exists on the input lines because the
current is essentially constant, independent of the state of the output.
5. The input signal voltage and the input common mode voltage should not be allowed to go negative by more than 0.3V. The positive limit
of the common mode voltage range is V+ - 1.5V, but either or both inputs can go to +32V without damage.
6. V
O
= 1.4V, R
S
= 0Ω with V+ from 5V to 30V, and over the full input common mode voltage range (0V to V+ - 1.5V).
3-19
CA124, CA224, CA324, LM324, LM2902
Schematic Diagram
(One of Four Operational Amplifiers)
V+
4
TO 2, 3, 4
6µA
4µA
100
µA
5
Q
2
Q
3
Q
4
Q
11
Q
10
Q
8
Q
9
Q
13
Q
12
50µA
TO 2, 3, 4
V- 11
C
COMP
Q
5
Q
6
12
Q
7
R
SC
1
V
O
10
9
+
3
8
13
+
4
4
6
+
2
7
-
-
2
Q
1
INPUTS
+ 3
-
-
Typical Performance Curves
140
OPEN-LOOP VOLTAGE GAIN (dB)
120
100
V
I
80
60
40
V
+
20
0
1
10
100
1K
10K
100K
FREQUENCY (Hz)
1M
10M
= 10 TO 15V
V+ = 26V
3
V+/2
11
T
A
= -40
≤
T
A
≤
85
o
C
0.1µF
2
4 V+
-
+
1
OUTPUT VOLTAGE (mV)
V
O
500
2
450
400
350
OUTPUT
300
250
0
1
2
3
4
5
TIME (µs)
6
7
8
9
3
V
I
+
50pF
T
A
= 25
o
C
V+ = 30V
-
1 V
O
INPUT
FIGURE 1. OPEN LOOP FREQUENCY RESPONSE
FIGURE 2. VOLTAGE FOLLOWER PULSE RESPONSE (SMALL
SIGNAL)
4
3
2
1
INPUT VOLTAGE (V)
0
4
3
2
1
0
10
20
30
TIME (µs)
40
FIGURE 3. VOLTAGE FOLLOWER PULSE RESPONSE (LARGE SIGNAL)
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