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The CA5420A is an integrated circuit Operational amplifier that combines PMOS transistors and bipolar transistors on a single monolithic chip. It is designed and guaranteed to operate in microprocessor logic systems that use V+ = 5V, V- = GND, since it can operate down to ±1V supplies. It will also be suitable for 3.3V logic systems.

Features
• CA5420A at 5V Supply Voltage with Full Military Temperature Range Guaranteed Specifications
• CA5420A Guaranteed to Operate from ±1V to ±10V Supplies
• 2V Supply at 300µA Supply Current
• 1pA (Typ) Input Current (Essentially Constant to 85°C)
• Rail-to-Rail Output Swing (Drive ±2mA Into 1kΩ Load)
• Pin Compatible with 741 Op Amp
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• pH Probe Amplifiers
• Picoammeters
• Electrometer (High Z) Instruments
• Portable Equipment
• Inaccessible Field Equipment
• Battery Dependent Equipment (Medical and Military)
• 5V Logic Systems
• Microprocessor Interface

The CA5420A is an integrated circuit Operational amplifier that combines PMOS transistors and bipolar transistors on a single monolithic chip. It is designed and guaranteed to operate in microprocessor logic systems that use V+ = 5V, V- = GND, since it can operate down to ±1V supplies. It will also be suitable for 3.3V logic systems.

Features
• CA5420A at 5V Supply voltage with full military temperature range guaranteed specifications
• CA5420A guaranteed to operate from ±1V to ±10V supplies
• 2V Supply at 350µA Supply Current
• 1pA (Typ) Input Current (essentially constant to +85°C)
• Rail-to-rail output swing (Drive ±2mA into 1kΩ load)
• Pin compatible with 741 op amp
• Pb-free (RoHS compliant)

Applications
• pH probe Amplifiers
• Picoammeters
• Electrometer (High Z) instruments
• Portable equipment
• Inaccessible field equipment
• Battery dependent equipment (medical and military)
• 5V logic systems
• Microprocessor interface

0.5MHz, Low Supply Voltage, Low Input Current BiMOS Operational Amplifiers

The CA3420A and CA3420 are integrated circuit Operational Amplifiers that combine PMOS transistors and bipolar transistors on a single monolithic chip. The CA3420A and CA3420 BiMOS Operational Amplifiers feature gate protected PMOS transistors in the Input circuit to provide very high Input impedance, very Low Input Currents (less than 1pA).

Features
• 2V Supply at 300µA Supply Current
• 1pA Input Current (Typ) (Essentially Constant to 85^oC)
• Rail-to-Rail Output Swing (Drive±2mA into 1kΩLoad)
• Pin Compatible with 741 Operational Amplifiers

Applications
• pH Probe Amplifiers
• Picoammeters
• Electrometer (High Z) Instruments
• Portable Equipment
• Inaccessible Field Equipment
• Battery-Dependent Equipment (Medical and Military)

The CA3420 is an integrated circuit Operational amplifier that combines PMOS transistors and bipolar transistors on a single monolithic chip. The CA3420 BiMOS Operational amplifier features gate protected PMOS transistors in the Input circuit to provide very high Input impedance, very Low Input Currents (less than 1pA). The internal bootstrapping network features a unique guardbanding technique for reducing the doubling of leakage Current for every 10°C increase in temperature.

Features
• 2V Supply at 300µA Supply Current
• 1pA Input Current (Typ) (Essentially Constant to 85°C)
• Rail-to-Rail Output Swing (Drive ±2mA into 1kΩ Load)
• Pin Compatible with 741 Operational Amplifiers
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• pH Probe Amplifiers
• Picoammeters
• Electrometer (High Z) Instruments
• Portable Equipment
• Inaccessible Field Equipment
• Battery-Dependent Equipment (Medical and Military)

BiMOS Precision Operational Amplifiers

Quad BiMOS Operational Amplifiers With MOSFET Input, Bipolar Output

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.

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
• 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

15MHz, BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS Output

CA5130A and CA5130 are integrated circuit Operational Amplifiers that combine the advantage of both CMOS and bipolar transistors on a monolithic chip. They are designed and guaranteed to operate in microprocessors 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.

Features
• MOSFET Input Stage
   - Very High Zl . . . . . . . . . . . . . 1.5TΩ (1.5 x 1012Ω) (Typ)
   - Very Low ll . . . . . . . . . . . . . 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
• CA5130A, CA5130 Have Full Military Temperature Range Guaranteed Specifications for V+ = 5V
• CA5130A, CA5130 Are Guaranteed to Operate Down to V+ = 4.5V for AOL
• CA5130A, CA5130 Are Guaranteed to Operate at ±7.5V CA3130A, CA3130 Specifications

Applications
• Ground Referenced Single Supply Amplifiers
• Fast Sample-Hold Amplifiers
• Long Duration Timers/Monostables
• High Input lmpedance Comparators (Ideal Interface with Digital CMOS)
• High lnput Impedance Wideband Amplifiers
• Voltage FolLowers (e.g., FolLower for Single-Supply D/A Converter)
• Voltage Regulators (Permits Control of Output Voltage Down to 0V)
• Peak Detectors
• Single Supply Full Wave Precision Rectifiers
• Photo Diode Sensor Amplifiers
• 5V Logic Systems
• Microprocessor Interface

GENERAL DESCRIPTION
The OPx177 family consists of very high-precision, single, dual, and quad Amplifiers featuring extremely Low offset voltage and drift, Low Input bias Current, Low noise, and Low power consumption. Outputs are stable with capacitive loads of over 1,000 pF with no external compensation. Supply Current is less than 500 µA per amplifier at 30 V. Internal 500 Ω series resistors protect the Inputs, alLowing Input signal levels several volts beyond either Supply without phase reversal.
   
FEATURES
    Low Offset Voltage: 60 μV Max
    Very Low Offset Voltage Drift: 0.7 μV/°C Max
    Low Input Bias Current: 2 nA Max
    Low Noise: 8 nV/√Hz
    CMRR, PSRR, and AVO > 120 dB Min
    Low Supply Current: 400 μA/Amp
    Dual Supply Operation: ±2.5 V to ±15 V
    Unity Gain Stable
    No Phase Reversal
    Inputs Internally Protected Beyond Supply Voltage
   
APPLICATIONS
    Wireless Base Station Control Circuits
    Optical Network Control Circuits
    Instrumentation
    Sensors and Controls
        Thermocouples
        RTDs
        Strain Bridges
        Shunt Current Measurements
    Precision Filters