CA3260A

4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output

Product Status: Mass Production

OVERVIEW

CA3260A and CA3260 are integrated circuit operational amplifiers that combine the advantage of both CMOS and bipolar transistors on a monolithic chip. The CA3260 series circuits are dual versions of the popular CA3160 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 CA3260 Series circuits operate at supply voltages ranging from 4V to 16V, or ±2V to ±8V when using split supplies. The CA3260A offers superior input characteristics over those of the CA3260.

KEY 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
  • Pb-Free Available (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
CA3260A
Basic Information
Production Status
Mass Production
# of Devices/ Channels
2
Bandwidth (MHz)
4
Slew Rate (V/μs)
10
VS (min)
4 V
VS (max)
16 V
IS (per amp)
1.2 mA
Noise VN (nV/√Hz)
25
IBIAS
2 pA
IBIAS (max)
2 pA
Max Offset Voltage
2 mV
IOUT
22 mA
VOUT (V)
15
Rail-to-Rail Input
No
Rail-to-Rail Output
No
PSRR (dB)
90
CMRR (dB)
95
Thermal Shutdown
No
Gain Min
1
AVOL (dB)
110
Enable
No
Qualification Level
Standard
Temperature Range
-55 to +125

Below you will find information to support the development of your application.

You can find an explanation of orderable part numbers here.

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Hardware Design Support

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