Semiconductor
January 1999
T
UCT
ROD ACEMEN 47
EP
LET
2-77
EPL
BSO NDED R 1-800-44
O
110kHz, Operational
ME
ns
.com
COM pplicatio @harris
RE
NO ntral A entapp
Transconductance Amplifier Array
l Ce mail: c
Cal or e
CA3060
Features
• Low Power Consumption as Low as 100mW Per
Amplifier
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.
[ /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,
• 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
Pinout
CA3060
(PDIP)
TOP VIEW
1
2
3
4
5
6
7
8
+
16 OUTPUT NO. 1
15 BIAS NO. 1
14 NON-INV. INPUT NO. 1
13 INV. INPUT NO. 1
12 INV. INPUT NO. 2
+
11 NON-INV. INPUT NO. 2
10 BIAS NO. 2
9
OUTPUT NO. 2
AMP
2
+
Part Number Information
PART NUMBER
CA3060E
TEMP.
RANGE (
o
C)
-40 to 85
PACKAGE
16 Ld PDIP
PKG.
NO.
E16.3
REGULATOR OUT
REGULATOR IN
V+
INV. INPUT NO. 3
NON-INV. INPUT NO. 3
BIAS NO. 3
OUTPUT NO. 3
V-
BIAS
REG.
AMP 1
AMP
3
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1999
File Number
537.4
3-1
HARRIS [ HARRIS CORPORATION ]
