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PDF CA3080A Data sheet ( Hoja de datos )

Número de pieza CA3080A
Descripción 2MHz / Operational Transconductance Amplifier
Fabricantes Intersil 
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Data Sheet
CA3080, CA3080A
September 1998
File Number 475.4
2MHz, Operational Transconductance
Amplifier (OTA)
The CA3080 and CA3080A types are Gatable-Gain Blocks
which utilize the unique operational-transconductance-
amplifier (OTA) concept described in Application Note
AN6668, “Applications of the CA3080 and CA3080A High-
Performance Operational Transconductance Amplifiers”.
The CA3080 and CA3080A types have differential input and a
single-ended, push-pull, class A output. In addition, these types
have an amplifier bias input which may be used either for gating
or for linear gain control. These types also have a high output
impedance and their transconductance (gM) is directly
proportional to the amplifier bias current (IABC).
The CA3080 and CA3080A types are notable for their excellent
slew rate (50V/µs), which makes them especially useful for
multiplexer and fast unity-gain voltage followers. These types
are especially applicable for multiplexer applications because
power is consumed only when the devices are in the “ON”
channel state.
The CA3080A’s characteristics are specifically controlled for
applications such as sample-hold, gain-control, multiplexing,
etc.
Ordering Information
PART NUMBER
(BRAND)
CA3080A
CA3080AE
CA3080AM
(3080A)
TEMP.
RANGE (oC)
PACKAGE
-55 to 125 8 Pin Metal Can
-55 to 125 8 Ld PDIP
-55 to 125 8 Ld SOIC
CA3080AM96
(3080A)
CA3080E
CA3080M
(3080)
CA3080M96
(3080)
-55 to 125
0 to 70
0 to 70
8 Ld SOIC Tape
and Reel
8 Ld PDIP
8 Ld SOIC
0 to 70
8 Ld SOIC Tape
and Reel
PKG.
NO.
T8.C
E8.3
M8.15
M8.15
E8.3
M8.15
M8.15
Features
• Slew Rate (Unity Gain, Compensated). . . . . . . . . . 50V/µs
• Adjustable Power Consumption. . . . . . . . . . . . .10µW to 30µW
• Flexible Supply Voltage Range. . . . . . . . . . . . . ±2V to ±15V
• Fully Adjustable Gain . . . . . . . . . . . . . . . . 0 to gMRL Limit
• Tight gM Spread:
- CA3080. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1
- CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6:1
• Extended gM Linearity . . . . . . . . . . . . . . . . . . . 3 Decades
Applications
• Sample and Hold
• Multiplexer
• Voltage Follower
• Multiplier
• Comparator
Pinouts
CA3080
(PDIP, SOIC)
TOP VIEW
NC
INV.
INPUT
NON-INV.
INPUT
V-
1
2
3
4
-
+
8 NC
7 V+
6 OUTPUT
5
AMPLIFIER
BIAS INPUT
CA3080
(METAL CAN)
TOP VIEW
TAB
8
1 7 V+
INV.
INPUT
2
-
+
6 OUTPUT
NON-INV. 3
INPUT
4
5 BIAS
V-
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999

1 page




CA3080A pdf
Typical Applications (Continued)
CA3080, CA3080A
2.0k
V+ = +15V
INPUT
2.0k
2
3
7
-
CA3080A
+
4
5
0.01µF
3N138
6
220
0.01µF 300pF
OUTPUT
3k
SAMPLE 0V
30k
STORAGE AND PHASE
COMPENSATION NETWORK
SLEW RATE (IN SAMPLE MODE) = 1.3V/µs
ACQUISITION TIME = 3µs (NOTE)
HOLD -15V
NOTE: Time required for output to settle within ±3mV of a 4V step.
V- = -15V
FIGURE 4. SCHEMATIC DIAGRAM OF THE CA3080A IN A SAMPLE-HOLD CONFIGURATION
STROBE
30k
1N914
0 SAMPLE
-15 HOLD
INPUT
2k
1N914
+15V
0.1µF
5
3+
7
CA3080A
6
2-
4
2k
0.1µF
2k
-15V
200pF
200pF
400
+15V
0.1µF
7
3.6k
3+
CA3140
2-
4
1
5
100k
6
0.1
µF
-15V
2k
2k
0.1µF
SIMULATED LOAD
NOT REQUIRED
30pF
FIGURE 5. SAMPLE AND HOLD CIRCUIT
5

5 Page





CA3080A arduino
CA3080, CA3080A
Typical Performance Curves (Continued)
V+
7
2
CA3080, A
3
5
4
0.01µF
6
0.01µF
V-
FIGURE 30. INPUT-TO-OUTPUT CAPACITANCE TEST CIRCUIT
f = 1 MHz
0.06 TA = 25oC
0.05
0.04
0.03
0.02
0.01
0 2 4 6 8 10 12 14 16 18
POSITIVE AND NEGATIVE SUPPLY VOLTAGE (V)
FIGURE 31. INPUT-TO-OUTPUT CAPACITANCE vs SUPPLY
VOLTAGE
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 www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (321) 724-7000
FAX: (321) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
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