Part Number: CA3140EZ
Function: 4.5MHz, BiMOS operational amplifier with MOSFET input/bipolar output
Package: DIP 8, SOIC 8, Can 8 Pin Type
Manufacturer: Intersil
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Description
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.
Features
- MOSFET input stage providing ultra-high input impedance
- Very low input current of approximately 10pA at ±15V
- Wide common-mode input voltage range extending below negative rail
- Output voltage swing closely tracks input common-mode range
- High voltage operation with combined PMOS and bipolar technology
- Low power consumption suitable for portable systems
Pinout
Typical Circuit Usage
- Voltage follower for high-impedance signal buffering
- Integrator and differentiator circuits in analog computation
- Active low-pass and band-pass filter implementations
- Comparator circuits with adjustable thresholds
- Photodiode amplifier for light sensing applications
How to Choose This Part
- Select when extremely high input impedance is required
- Useful in designs where input current must be minimized
- Appropriate for single-supply or dual-supply analog systems
- Preferred for precision low-frequency signal processing
- Consider alternatives if high-speed or rail-to-rail precision is critical
Applications
• Ground-Referenced Single Supply Amplifiers in Automobile and Portable Instrumentation
• Sample and Hold Amplifiers
• Long Duration Timers/Multivibrators (μseconds-Minutes-Hours)
• Photocurrent Instrumentation
• Peak Detectors
• Active Filters
• Comparators
Alternative / Equivalent Products
- CA3130 high-speed MOSFET input operational amplifier
- TL071 JFET input operational amplifier
- LF351 low-noise JFET input op-amp
- OPA134 precision audio operational amplifier
- LM358 general-purpose dual operational amplifier
Other data sheets are available within the file: CA3140A, CA3140AE, CA3140AT, CA3140E
CA3140 Datasheet PDF Download
