
3-1
Semiconductor
January 1999
CA3060
110kHz, Operational
Transconductance Amplifier Array
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Harris Corporation 1999
File Number
537.4
Features
Low Power Consumption as Low as 100mW Per
Amplifier
Independent Biasing for Each Amplifier
High Forward Transconductance
Programmable Range of Input Characteristics
Low Input Bias and Input Offset Current
High Input and Output Impedance
No Effect on Device Under Output Short-Circuit
Conditions
Zener Diode Bias Regulator
Applications
For Low Power Conventional Operational Amplifier
Applications
Active Filters
Comparators
Gyrators
Mixers
Modulators
Multiplexers
Multipliers
Strobing and Gating Functions
Sample and Hold Functions
Description
The CA3060 monolithic integrated circuit consists of an array of
three independent Operational Transconductance Amplifiers
(see Note). This type of amplifier has the generic characteris-
tics of an operational voltage amplifier with the exception that
the forward gain characteristic is best described by transcon-
ductance rather than voltage gain (open-loop voltage gain is the
product of the transconductance and the load resistance,
g
M
R
L
). When operated into a suitable load resistor and with
provisions for feedback, these amplifiers are well suited for a
wide variety of operational-amplifier and related applications. In
addition, the extremely high output impedance makes these
types particularly well suited for service in active filters.
The three amplifiers in the CA3060 are identical push-pull
Class A types which can be independently biased to achieve a
wide range of characteristics for specific application. The elec-
trical characteristics of each amplifier are a function of the
amplifier bias current (I
ABC
). This feature offers the system
designer maximum flexibility with regard to output current capa-
bility, power consumption, slew rate, input resistance, input bias
current, and input offset current. The linear variation of the
parameters with respect to bias and the ability to maintain a
constant DC level between input and output of each amplifier
also makes the CA3060 suitable for a variety of nonlinear appli-
cations such as mixers, multipliers, and modulators.
In addition, the CA3060 incorporates a unique Zener diode
regulator system that permits current regulation below sup-
ply voltages normally associated with such systems.
NOTE: Generic applications of the OTA are described in AN-6668.
For improved input operating ranges, refer to CA3080 and CA3280
data sheets (File Nos. 475 and 1174) and application notes AN6668
and AN6818.
Pinout
CA3060
(PDIP)
TOP VIEW
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
+
+
A3
+
AMP 1
BIAS
REG.
REGULATOR OUT
REGULATOR IN
V+
INV. INPUT NO. 3
NON-INV. INPUT NO. 3
BIAS NO. 3
OUTPUT NO. 3
V-
OUTPUT NO. 1
BIAS NO. 1
NON-INV. INPUT NO. 1
INV. INPUT NO. 1
INV. INPUT NO. 2
NON-INV. INPUT NO. 2
BIAS NO. 2
OUTPUT NO. 2
A2
Part Number Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3060E
-40 to 85
16 Ld PDIP
E16.3
[ /Title
(CA30
60)
/Sub-
ject
(110k
Hz,
Opera-
tional
Transc
onduc-
tance
Ampli-
fier
Array)
/Autho
r ()
/Key-
words
(Har-
ris
Semi-
con-
ductor,
triple,
transco
nduc-
tance
ampli-
fier,
low
power
op
amp,
or email: centapp@harris.com
NO REOBSOLETE PRODUCT
Call Central Applications 1-800-442-7747