1
3MHz, BiMOS Microprocessor Operational
Amplifiers with MOSFET Input/CMOS
Output
The CA5260A and CA5260 are integrated-circuit operational
amplifiers that combine the advantage of both CMOS and
bipolar transistors on a monolithic chip. The CA5260 series
circuits are dual versions of the popular CA5160 series.
They are designed and guaranteed to operate in
microprocessor or logic systems that use +5V supplies.
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 CA5260 Series circuits operate at supply voltages
ranging from 4.5V to 16V, or ±2.25V to ±8V when using split
supplies.
The CA5260, CA5260A have guaranteed specifications for
5V operation over the full military temperature range of
-55°C to +125°C.
Pinout
CA5260, CA5260A
(8 LD SOIC)
TOP VIEW
NON INV. INPUT (A)
V-
1
2
3
8
7
6
5
V+
OUTPUT (B)
INV. INPUT (B)
NON INV. INPUT (B)
OUTPUT (A)
A
4
B
+ -
+
-
INV. INPUT (A)
Features
MOSFET Input Stage provides
- Very High ZI . . . . . . . . . . . . . 1.5TΩ (1.5 x 1012Ω) (Typ)
- Very Low II . . . . . . . . . . . . . 5pA (Typ) at 15V Operation
2pA (Typ) at 5V Operation
Ideal for Single Supply Applications
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
CA5260A, CA5260 Have Full Military Temperature Range
Guaranteed Specifications for V+ = 5V
CA5260A, CA5260 are Guaranteed to Operate Down to
4.5V for AOL
Fully Guaranteed to Operate from -55°C to +125°C at
V+ = 5V, V- = GND
Pb-Free Available (RoHS Compliant)
Applications
Ground Referenced Single Supply Amplifiers
Fast Sample-Hold Amplifiers
Long Duration Timers/Monostables
Ideal Interface with Digital CMOS
High Input Impedance Wideband Amplifiers
Voltage Followers (e.g., Follower for Single Supply D/A
Converter)
Voltage Regulators (Permits Control of Output Voltage
Down to 0V)
Wien Bridge Oscillators
Voltage Controlled Oscillators
Photo Diode Sensor Amplifiers
5V Logic Systems
Microprocessor Interface
FN1929.8
CA5260, CA5260A
Data Sheet
August 3, 2010
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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