CA3080, CA3080A
Data Sheet
September 1998
File Number 475.4
2MHz, Operational Transconductance
Ampli鏗乪r (OTA)
The CA3080 and CA3080A types are Gatable-Gain Blocks
which utilize the unique operational-transconductance-
ampli鏗乪r (OTA) concept described in Application Note
AN6668, 鈥淎pplications of the CA3080 and CA3080A High-
Performance Operational Transconductance Ampli鏗乪rs鈥?
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/碌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 鈥淥N鈥?/div>
channel state.
The CA3080A鈥檚 characteristics are speci鏗乧ally controlled for
applications such as sample-hold, gain-control, multiplexing,
etc.
Features
鈥?Slew Rate (Unity Gain, Compensated). . . . . . . . . . 50V/碌s
鈥?Adjustable Power Consumption. . . . . . . . . . . . .10碌W to 30碌W
鈥?Flexible Supply Voltage Range. . . . . . . . . . . . .
鹵2V
to
鹵15V
鈥?Fully Adjustable Gain . . . . . . . . . . . . . . . . 0 to g
M
R
L
Limit
鈥?Tight g
M
Spread:
- CA3080. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1
- CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6:1
鈥?Extended g
M
Linearity . . . . . . . . . . . . . . . . . . . 3 Decades
Applications
鈥?Sample and Hold
鈥?Multiplexer
鈥?Voltage Follower
鈥?Multiplier
鈥?Comparator
Pinouts
CA3080
(PDIP, SOIC)
TOP VIEW
NC
INV.
INPUT
1
2
3
4
8
NC
V+
OUTPUT
AMPLIFIER
BIAS INPUT
Ordering Information
PART NUMBER
(BRAND)
CA3080A
CA3080AE
CA3080AM
(3080A)
CA3080AM96
(3080A)
CA3080E
CA3080M
(3080)
CA3080M96
(3080)
TEMP.
RANGE (
o
C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
0 to 70
0 to 70
0 to 70
PACKAGE
8 Pin Metal Can
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC Tape
and Reel
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC Tape
and Reel
PKG.
NO.
T8.C
E8.3
M8.15
M8.15
E8.3
M8.15
M8.15
-
+
7
6
5
NON-INV.
INPUT
V-
CA3080
(METAL CAN)
TOP VIEW
TAB
8
1
INV.
INPUT 2
NON-INV.
INPUT
3
4
V-
7 V+
-
+
6 OUTPUT
5 BIAS
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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漏
Intersil Corporation 1999
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