|
|
PDF CA3140 Data sheet ( Hoja de datos )
| Número de pieza | CA3140 | |
| Descripción | 4.5MHz / BiMOS Operational Amplifier with MOSFET Input/Bipolar Output | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
1. CA3140  Hay una vista previa y un enlace de descarga de CA3140 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
|
No Preview Available !
®
Data Sheet
CA3140, CA3140A
July 11, 2005
FN957.10
4.5MHz, BiMOS Operational Amplifier with
MOSFET Input/Bipolar Output
The CA3140A and CA3140 are integrated circuit operational
amplifiers that combine the advantages of high voltage
PMOS transistors with high voltage bipolar transistors on a
single monolithic chip.
The CA3140A and CA3140 BiMOS operational amplifiers
feature gate protected MOSFET (PMOS) transistors in the
input circuit to provide very high input impedance, very low
input current, and high speed performance. The CA3140A
and CA3140 operate at supply voltage from 4V to 36V
(either single or dual supply). These operational amplifiers
are internally phase compensated to achieve stable
operation in unity gain follower operation, and additionally,
have access terminal for a supplementary external capacitor
if additional frequency roll-off is desired. Terminals are also
provided for use in applications requiring input offset voltage
nulling. The use of PMOS field effect transistors in the input
stage results in common mode input voltage capability down
to 0.5V below the negative supply terminal, an important
attribute for single supply applications. The output stage
uses bipolar transistors and includes built-in protection
against damage from load terminal short circuiting to either
supply rail or to ground.
The CA3140A and CA3140 are intended for operation at supply
voltages up to 36V (±18V).
Features
• MOSFET Input Stage
- Very High Input Impedance (ZIN) -1.5TΩ (Typ)
- Very Low Input Current (Il) -10pA (Typ) at ±15V
- Wide Common Mode Input Voltage Range (VlCR) - Can be
Swung 0.5V Below Negative Supply Voltage Rail
- Output Swing Complements Input Common Mode
Range
• Directly Replaces Industry Type 741 in Most Applications
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Ground-Referenced Single Supply Amplifiers in
Automobile and Portable Instrumentation
• Sample and Hold Amplifiers
• Long Duration Timers/Multivibrators
(µseconds-Minutes-Hours)
• Photocurrent Instrumentation
• Peak Detectors
• Active Filters
•
http://www.DataSheet4U.net/
Comparators
• Interface in 5V TTL Systems and Other Low
Supply Voltage Systems
• All Standard Operational Amplifier Applications
• Function Generators
• Tone Controls
• Power Supplies
• Portable Instruments
• Intrusion Alarm Systems
Pinout
CA3140 (PDIP, SOIC)
TOP VIEW
OFFSET
NULL
1
INV. INPUT 2
NON-INV.
INPUT
3
V- 4
-
+
8 STROBE
7 V+
6 OUTPUT
5
OFFSET
NULL
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Harris Corporation 1998, Copyright Intersil Americas Inc. 2002, 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
datasheet pdf - http://www.DataSheet4U.net/
1 page  
Block Diagram
CA3140, CA3140A
2mA
+
3
INPUT
-
2
BIAS CIRCUIT
CURRENT SOURCES
AND REGULATOR
200µA
1.6mA
200µA
A ≈ 10
A≈
10,000
C1
12pF
51
OFFSET
NULL
8
4mA
7 V+
2µA 2mA
A≈1
6 OUTPUT
STROBE
4 V-
Schematic Diagram
BIAS CIRCUIT
D1
Q1
Q6
Q7
R1
8K Q8
D2
INVERTING
INPUT
NON-INVERTING
INPUT
2
-
+
3
INPUT STAGE
Q2
Q5
SECOND STAGE OUTPUT STAGE DYNAMIC CURRENT SINK
Q3
Q4
http://www.DataSheet4U.net/
D7
R9
50Ω
R10
1K
Q19 R11
20Ω
Q20
R12
12K
R13
5K
D8
R14
20K
7 V+
D3 D4
D5
Q17
R8
1K Q18
Q21
6 OUTPUT
Q9 Q10
R2
500Ω
R3
500Ω
Q11 Q12
R4
500Ω
R5
500Ω
C1
12pF
Q13
Q14
Q15
R6
50Ω
Q16
D6
R7
30Ω
51
OFFSET NULL
NOTE: All resistance values are in ohms.
8
STROBE
4
V-
5 FN957.10
July 11, 2005
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
CA3140, CA3140A
CENTERING
7.5kΩ
+15V
360Ω
360Ω
2MΩ
SYMMETRY
-15V
3+
7
15kΩ
CA3080A 6
2-
4
7-60
pF
5
HIGH
+15V
-15V FREQ.
SHAPE
100kΩ
-15V 10kΩ
+15V
HIGH
+15V
FREQUENCY
0.1 LEVEL
910kΩ
62kΩ
7 µF
7-60pF
5
3
51
pF 2
+
CA3140
-
6
11kΩ
7
2-
CA3080
6
4
-15V
2kΩ
10kΩ 11kΩ
0.1
µF
EXTERNAL
OUTPUT
3+
13kΩ
4
-15V
10kΩ
EXTERNAL
OUTPUT
2.7kΩ
TO OUTPUT
AMPLIFIER
FROM BUFFER METER
DRIVER (OPTIONAL)
39kΩ
120Ω 10kΩ
FREQUENCY
ADJUSTMENT
5.1kΩ TO
SINE WAVE
-15V
+15V
OUTPUT
SHAPER
1N914
THIS NETWORK IS USED WHEN THE
AMPLIFIER
OPTIONAL BUFFER CIRCUIT IS NOT USED
FIGURE 10A. CIRCUIT
Top Trace: Output at junction of 2.7Ω and 51Ω resistors;
5V/Div., 500ms/Div.
Center Trace: External output of triangular function generator;
2V/Div., 500ms/Div.
Bottom Trace: Output of “Log” generator; 10V/Div., 500ms/Div.
FIGURE 10B. FIGURE FUNCTION GENERATOR SWEEPING
FREQUENCY
ADJUSTMENT
http://www.DataSheet4U.net/
METER DRIVER
AND BUFFER
AMPLIFIER
M
FUNCTION
GENERATOR
SINE WAVE
SHAPER
POWER
SUPPLY ±15V
+15V
-15V
WIDEBAND
LINE DRIVER
51Ω
FINE
RATE
SWEEP
GENERATOR
GATE DC LEVEL
SWEEP ADJUST
COARSE
RATE
OFF INT.
V- EXT.
EXTERNAL
INPUT
1V/Div., 1s/Div.
Three tone test signals, highest frequency ≥0.5MHz. Note the slight
asymmetry at the three second/cycle signal. This asymmetry is due to
slightly different positive and negative integration from the CA3080A
and from the PC board and component leakages at the 100pA level.
SWEEP
LENGTH
V-
FIGURE 10C. FUNCTION GENERATOR WITH FIXED
FREQUENCIES
FIGURE 10D. INTERCONNECTIONS
FIGURE 10. FUNCTION GENERATOR
11
FN957.10
July 11, 2005
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet CA3140.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CA3140 | 4.5MHz / BiMOS Operational Amplifier with MOSFET Input/Bipolar Output | Intersil |
| CA3140 | BiMOS Operational Amplifier |  Harris |
| CA3140A | 4.5MHz / BiMOS Operational Amplifier with MOSFET Input/Bipolar Output | Intersil |
| CA3141 | High-Voltage Diode Array For Commercial / Industrial and Military Applications |  Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |