
1
CA3080, CA3080A
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 (g
M
) is directly
proportional to the amplifier bias current (I
ABC
).
The CA3080 and CA3080A types are notable for their excellent
slew rate (50V/
μ
s), 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.
Features
Slew Rate (Unity Gain, Compensated). . . . . . . . . . 50V/
μ
s
Adjustable Power Consumption. . . . . . . . . . . . .10
μ
W to 30
μ
W
Flexible Supply Voltage Range. . . . . . . . . . . . .
±
2V to
±
15V
Fully Adjustable Gain . . . . . . . . . . . . . . . . 0 to g
M
R
L
Limit
Tight g
M
Spread:
- CA3080. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1
- CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.6:1
Extended g
M
Linearity . . . . . . . . . . . . . . . . . . . 3 Decades
Applications
Sample and Hold
Multiplexer
Voltage Follower
Multiplier
Comparator
Pinouts
CA3080
(PDIP, SOIC)
TOP VIEW
CA3080
(METAL CAN)
TOP VIEW
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3080A
-55 to 125
8 Pin Metal Can
T8.C
CA3080AE
-55 to 125
8 Ld PDIP
E8.3
CA3080AM
(3080A)
-55 to 125
8 Ld SOIC
M8.15
CA3080AM96
(3080A)
-55 to 125
8 Ld SOIC Tape
and Reel
M8.15
CA3080E
0 to 70
8 Ld PDIP
E8.3
CA3080M
(3080)
0 to 70
8 Ld SOIC
M8.15
CA3080M96
(3080)
0 to 70
8 Ld SOIC Tape
and Reel
M8.15
1
2
3
4
8
7
6
5
+
V+
NC
INV.
INPUT
NON-INV.
INPUT
V-
NC
OUTPUT
AMPLIFIER
BIAS INPUT
-
OUTPUT
BIAS
2
4
V-
6
1
3
7
5
8
+
TAB
V+
NON-INV.
INPUT
INV.
INPUT
-
Data Sheet
September 1998
File Number
475.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Copyright
Intersil Corporation 1999