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BA4560FVT Datasheet(PDF) 40 Page - Rohm |
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BA4560FVT Datasheet(HTML) 40 Page - Rohm |
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40 / 52 page  Datasheet www.rohm.com TSZ02201-0RAR1G200020-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 40/48 19.Nov.2014 Rev.003 TSZ22111･15･00 BA4560xxx BA4560Rxxx BA4564RFV BA4564WFV Operational Notes – continued 11. Regarding the Input Pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a parasitic diode or transistor. For example (refer to figure below): When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be avoided. Figure 99. Example of monolithic IC structure 12. Unused Circuits It is recommended to apply the connection (see Figure 100.) and set the non-inverting input terminal at a potential within the Input Common-mode Voltage Range (VICM) for any unused circuit. 13. Input Voltage Applying VEE +36V to the input terminal is possible without causing deterioration of the electrical characteristics or destruction, regardless of the supply voltage. However, this does not ensure normal circuit operation. Please note that the circuit operates normally only when the input voltage is within the common mode input voltage range of the electric characteristics. 14. Power Supply(single/dual) The operational amplifier operates when the voltage supplied is between VCC and VEE. Therefore, the single supply operational amplifier can be used as dual supply operational amplifier as well. 15. IC Handling When pressure is applied to the IC through warp on the printed circuit board, the characteristics may fluctuate due to the piezo effect. Be careful with the warp on the printed circuit board. 16. The IC Destruction Caused by Capacitive Load The IC may be damaged when VCC terminal and VEE terminal is shorted with the charged output terminal capacitor. When IC is used as an operational amplifier or as an application circuit where oscillation is not activated by an output capacitor, output capacitor must be kept below 0.1μF in order to prevent the damage mentioned above. VEE VCC VICM N N P+ P N N P+ P Substrate GND N P+ N N P+ N P P Substrate GND GND Parasitic Elements Pin A Pin A Pin B Pin B B C E Parasitic Elements GND Parasitic Elements C B E Transistor (NPN) Resistor N Region close-by Parasitic Elements Keep this potential in VICM Figure 100. Example of Application Circuit for Unused Op-amp |
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