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CA3140A Datenblatt(PDF) 8 Page - Intersil Corporation

Teilenummer CA3140A
Bauteilbeschribung  4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
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Hersteller  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA3140A Datenblatt(HTML) 8 Page - Intersil Corporation

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All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
signal transients from forcing a signal through the input
protection network and directly driving the internal constant
current source which could result in positive feedback via the
output terminal. A 3.9k
Ω resistor is sufficient.
The typical input current is on the order of 10pA when the
inputs are centered at nominal device dissipation. As the
output supplies load current, device dissipation will increase,
raising the chip temperature and resulting in increased input
current. Figure 7 shows typical input terminal current versus
ambient temperature for the CA3140.
It is well known that MOSFET devices can exhibit slight
changes in characteristics (for example, small changes in
input offset voltage) due to the application of large
differential input voltages that are sustained over long
periods at elevated temperatures.
Both applied voltage and temperature accelerate these
changes. The process is reversible and offset voltage shifts of
the opposite polarity reverse the offset. Figure 9 shows the
typical offset voltage change as a function of various stress
voltages at the maximum rating of 125oC (for metal can); at
lower temperatures (metal can and plastic), for example, at
85oC, this change in voltage is considerably less. In typical
linear applications, where the differential voltage is small and
symmetrical, these incremental changes are of about the
same magnitude as those encountered in an operational
amplifier employing a bipolar transistor input stage.
FIGURE 6. OPEN LOOP VOLTAGE GAIN AND PHASE vs
FREQUENCY
FIGURE 7. INPUT CURRENT vs TEMPERATURE
FIGURE 8. OUTPUT VOLTAGE SWING CAPABILITY AND COMMON MODE INPUT VOLTAGE RANGE vs SUPPLY VOLTAGE
101
103
104
105
106
107
108
FREQUENCY (Hz)
100
80
60
40
20
0
SUPPLY VOLTAGE: VS = ±15V
TA = 25
oC
102
-75
-90
-105
-120
-135
-150
RL = 2kΩ,
CL = 0pF
RL = 2kΩ,
CL = 100pF
φOL
SUPPLY VOLTAGE: VS = ±15V
TEMPERATURE (oC)
-60
-40
-20
0
20
40
60
80
100
120
140
1K
100
1
10K
10
SUPPLY VOLTAGE (V+, V-)
0
5
10
15
20
25
-1.5
-2.0
-1.0
-2.5
RL =
+VOUT AT TA = 125
oC
+VOUT AT TA = 25
oC
+VOUT AT TA = -55
oC
+VICR AT TA = 125
oC
+VICR AT TA = 25
oC
+VICR AT TA = -55
oC
-3.0
0
-0.5
SUPPLY VOLTAGE (V+, V-)
0
5
10
15
20
25
-VICR AT TA = 125
oC
-VICR AT TA = 25
oC
-VICR AT TA = -55
oC
-VOUT FOR
TA = -55
oC to 125oC
0
-0.5
0.5
-1.0
-1.5
1.5
1.0
CA3140, CA3140A


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