BA4560RFVM-TR(2014) View Datasheet(PDF) - ROHM Semiconductor
Part Name
Description
Manufacturer
BA4560RFVM-TR Datasheet PDF : 52 Pages
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BA4560xxx BA4560Rxxx BA4564RFV BA4564WFV
Datasheet
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.
Resistor
Transistor (NPN)
Pin A
Pin A
Pin B
C
B
E
Pin B
P+
N
N
Parasitic
Elements
P
P+
N
N
P Substrate
GND
Parasitic
Elements
N P+
N P N P+ N
P Substrate
Parasitic
GND GND
Elements
Figure 99. Example of monolithic IC structure
B
N Region
close-by
C
E
Parasitic
Elements
GND
12. Unused Circuits
VCC
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.
Keep this potential
13. Input Voltage
in VICM
VICM
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.
VEE
Figure 100. Example of Application Circuit
for Unused Op-amp
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.
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19.Nov.2014 Rev.003
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