DATASHEET CA5420A FN1925 Rev 9.00 0.5MHz, Low Supply Voltage, Low Input Current BiMOS Operational Amplifiers February 11, 2015 The CA5420A is an integrated circuit operational amplifier that Features combines PMOS transistors and bipolar transistors on a single CA5420A at 5V supply voltage with full military temperature monolithic chip. It is designed and guaranteed to operate in range guaranteed specifications 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 CA5420A guaranteed to operate from 1V to 10V supplies logic systems. 2V supply at 350A supply current The CA5420A BiMOS operational amplifier features 1pA (Typ) input current (essentially constant to +85C) gate-protected PMOS transistors in the input circuit to provide Rail-to-rail output swing (Drive 2mA into 1k load) very high input impedance, very low input currents (less than 1pA). The internal bootstrapping network features a unique Pin compatible with 741 op amp guardbanding technique for reducing the doubling of leakage Pb-free (RoHS compliant) current for every +10C increase in temperature. The CA5420A operates at total supply voltages from 2V to 20V either single or Applications dual supply. This operational amplifier is internally phase pH probe amplifiers compensated to achieve stable operation in the unity gain follower configuration. Additionally, it has access terminals for a Picoammeters supplementary external capacitor if additional frequency roll-off is Electrometer (High Z) instruments desired. Terminals are also provided for use in applications Portable equipment requiring input offset voltage nulling. The use of PMOS in the input stage results in common-mode input voltage capability Inaccessible field equipment down to 0.45V below the negative supply terminal, an important Battery dependent equipment (medical and military) attribute for single supply application. The output stage uses a feedback OTA type amplifier that can swing essentially from 5V logic systems rail-to-rail. The output driving current of 1.0mA (Min) is provided by Microprocessor interface using nonlinear current mirrors. This device has guaranteed specifications for 5V operation over the full military temperature range of -55C to +125C. The CA5420A has the same 8 lead pinout used for the industry standard 741. X1 - BiMOS + BiMOS X1 BUFFER AMPS HIGH GAIN TA BUFER BOOTSTRAPPED (50k) (X2) INPUT PROTECTION NETWORK FIGURE 1. FUNCTIONAL DIAGRAM FN1925 Rev 9.00 Page 1 of 9 February 11, 2015CA5420A Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Notes 1, 2, 3) MARKING (C) (RoHS Compliant) DWG. CA5420AMZ 5420 AMZ -55 to +125 8 Ld SOIC M8.15 NOTES: 1. Add 96 suffix for Tape and Reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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. 3. For Moisture Sensitivity Level (MSL), please see product information page for CA5420A. For more information on MSL please see techbrief TB363. Pin Configuration CA5420A (8 LD SOIC) TOP VIEW OFFSET 1 8 STROBE NULL INV. 2 7 V+ INPUT - + NON-INV. 3 6 OUTPUT INPUT OFFSET 4 5 V- NULL Pin is connected to Case. FN1925 Rev 9.00 Page 2 of 9 February 11, 2015