REI Datasheet
CA3140, CA3140A
4.5MHz, BiMOS Operational Amplifier
The CA3140A and CA3140 are integrated circuit operational amplifiers that combine the advantages
of high voltage PMOS transistors with high voltage bipolar transistors on a single monolithic chip.
The CA3140A and CA3140 BiMOS operational amplifiers feature gate protected MOSFET (PMOS)
transistors in the input circuit to provide very high input impedance, very low input current, and
high speed performance. The CA3140A and CA3140 operate at supply voltage from 4V to 36V
(either single or dual supply). These operational amplifiers are internally phase compensated to
achieve stable operation in unity gain follower operation, and additionally, have access terminal
for a supplementary external capacitor if additional frequency roll-off is desired. Terminals are also
provided for use in applications requiring input offset voltage nulling. 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 for single supply applications. The output stage uses
bipolar transistors and includes built-in protection against damage from load terminal short circuiting
to either supply rail or to ground.
Rochester Electronics
Manufactured Components
Rochester branded components are
manufactured using either die/wafers
purchased from the original suppliers
or Rochester wafers recreated from the
original IP. All recreations are done with
the approval of the OCM.
Parts are tested using original factory
test programs or Rochester developed
test solutions to guarantee product
meets or exceeds the OCM data sheet.
Quality Overview
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ISO-9001
AS9120 certification
Qualified Manufacturers List (QML) MIL-PRF-38535
• Class Q Military
• Class V Space Level
Qualified Suppliers List of Distributors (QSLD)
• Rochester is a critical supplier to DLA and
meets all industry and DLA standards.
Rochester Electronics, LLC is committed to supplying
products that satisfy customer expectations for
quality and are equal to those originally supplied by
industry manufacturers.
The original manufacturer’s datasheet accompanying this document reflects the performance
and specifications of the Rochester manufactured version of this device. Rochester Electronics
guarantees the performance of its semiconductor products to the original OEM specifications.
‘Typical’ values are for reference purposes only. Certain minimum or maximum ratings may be
based on product characterization, design, simulation, or sample testing.
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