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CA5420AMZ Fiches technique(PDF) 1 Page - Intersil Corporation |
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CA5420AMZ Fiches technique(HTML) 1 Page - Intersil Corporation |
1 / 7 page 1 ® CA5420A 0.5MHz, Low Supply Voltage, Low Input Current BiMOS Operational Amplifiers 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. The CA5420A 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. The CA5420A operates at total supply voltages from 2V to 20V either single or dual supply. This operational amplifier is internally phase compensated to achieve stable operation in the unity gain follower configuration. Additionally, it has access terminals 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 in the input stage results in common-mode input voltage capability down to 0.45V below the negative supply terminal, an important attribute for single supply application. The output stage uses a feedback OTA type amplifier that can swing essentially from rail-to-rail. The output driving current of 1.0mA (Min) is provided by using nonlinear current mirrors. This device has guaranteed specifications for 5V operation over the full military temperature range of -55°C to 125°C. The CA5420A has the same 8 lead pinout used for the industry standard 741. Functional Diagram 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 300 µA 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 Pinout CA5420A (SOIC) TOP VIEW NOTE: Pin is connected to Case. MOS BIPOLAR X1 X1 MOS BIPOLAR OTA BUFFER (X2) HIGH GAIN (50K) BUFFER AMPS; BOOTSTRAPPED INPUT PROTECTION NETWORK - + Ordering Information PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE PKG. DWG. # CA5420AM 5420A -55 to 125 8 Ld SOIC M8.15 CA5420AMZ* (Note) 5420AMZ -55 to 125 8 Ld SOIC (Pb-free) M8.15 *Add “96” suffix for Tape and Reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 1 2 3 4 8 7 6 5 + V+ OFFSET INV. INPUT V- NON-INV. INPUT STROBE OUTPUT OFFSET NULL NULL - Data Sheet December 21, 2005 FN1925.5 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 1998, 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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Description similaire - CA5420AMZ |
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