BA2903FVM datasheet(45/56 Pages) ROHM

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Datasheet

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TSZ02201-0RFR0G200200-1-2

45/53

11.Dec.2013 Rev.003

TSZ22111 • 15 • 001

BA8391G

BA10393F

BA10339xx

BA2903xxx

BA2903Sxxx

BA2903Wxx

BA2901xx

BA2901Sxx

VCC

VEE

OPEN

VICM

Operational Notes – continued

11. Regarding Input Pins 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.

P Substrate

Parasitic

Element

GND

N P

P Substrate

GND

Parasitic

Element

Pin A

Pin B

Parasitic

Element

GND

Parasitic element

or Transistor

Parasitic

Element

Transistor (NPN)

Resistor

Figure 116. Example of Monolithic IC Structure

12. Unused Circuits

When there are unused circuits it is recommended that they be connected as in Figure 117, setting the non-inverting

input terminal to a potential within the in-phase input voltage range (VICR).

Figure 117. Disable Circuit Example

13. Input Terminal Voltage

(BA8391G / BA2903xxxx / BA2901xxx) Applying VEE + 36V to the input terminal is possible without causing

deterioration of the electrical characteristics or destruction, irrespective 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 (signal / dual)

The comparators when the specified voltage supplied is between VCC and VEE. Therefore, the single supply

comparators can be used as a dual supply comparators as well.

15. Terminal short-circuits

When the output and VCC terminals are shorted, excessive output current may flow, resulting in undue heat generation

and, subsequently, destruction.

16. IC Handling

Applying mechanical stress to the IC by deflecting or bending the board may cause fluctuations in the electrical

characteristics due to piezo resistance effects.

Please keep

this potential in VICM

BA2903FVM Datasheet(PDF) 45 Page - Rohm

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