
1
CA3160, CA3160A
4MHz, BiMOS Operational Amplifier with
MOSFET Input/CMOS Output
The CA3160A and CA3160 are integrated circuit operational
amplifiers that combine the advantage of both CMOS and
bipolar transistors on a monolithic chip. The CA3160 series are
frequency compensated versions of the popular CA3130
series.
Gate protected P-Channel MOSFET (PMOS) transistors are
used in the input circuit to provide very high input
impedance, very low input current, and exceptional speed
performance. The use of PMOS field effect transistors in the
input stage results in common-mode input voltage capability
down to 0.5V below the negative supply terminal, an
important attribute in single supply applications.
A complementary symmetry MOS (CMOS) transistor-pair,
capable of swinging the output voltage to within 10mV of
either supply voltage terminal (at very high values of load
impedance), is employed as the output circuit.
The CA3160 Series circuits operate at supply voltages
ranging from 5V to 16V, or
±
2.5V to
±
8V when using split
supplies, and have terminals for adjustment of offset voltage
for applications requiring offset null capability. Terminal
provisions are also made to permit strobing of the output
stage.
The CA3160A offers superior input characteristics over
those of the CA3160.
Features
MOSFET Input Stage Provides:
- Very High Z
I
= 1.5T
(1.5 x 10
12
) (Typ)
- Very Low I
I
. . . . . . . . . . . . . 5pA (Typ) at 15V Operation
. . . . . . . . . . . . . . . . . . . . . . . 2pA (Typ) at 5V Operation
Common-Mode Input Voltage Range Includes
Negative Supply Rail; Input Terminals Can Be Swung
0.5V Below Negative Supply Rail
CMOS Output Stage Permits Signal Swing to Either (or
Both) Supply Rails
Applications
Ground Referenced Single Supply Amplifiers
Fast Sample Hold Amplifiers
Long Duration Timers/Monostables
High Input Impedance Wideband Amplifiers
Voltage Followers (e.g., Follower for Single Supply
D/A Converter)
Wien-Bridge Oscillators
Voltage Controlled Oscillators
Photo Diode Sensor Amplifiers
Pinouts
CA3160
(METAL CAN)
TOP VIEW
CA3160
(PDIP)
TOP VIEW
NOTE: CA3160 Series devices have an on-chip frequency
compensation network. Supplementary phase compensation or
frequency roll-off (if desired) can be connected externally between
Terminals 1 and 8.
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3160AE
-55 to 125
8 Ld PDIP
E8.3
CA3160E
-55 to 125
8 Ld PDIP
E8.3
CA3160T
-55 to 125
8 Pin Metal Can
T8.C
TAB
OUTPUT
INV.
V- AND CASE
OFFSET
NULL
NON-INV.
INPUT
V+
OFFSET
NULL
2
4
6
1
3
7
5
8
-
+
INPUT
STROBE
SUPPLEMENTARY
COMPENSATION
OFFSET NULL
INV.
INPUT
NON-INV.
INPUT
V-
1
2
3
4
8
7
6
5
STROBE
V+
OUTPUT
OFFSET NULL
-
+
Data Sheet
September 1998
File Number
976.3
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