BU7242NUX ROHM [Rohm], BU7242NUX Datasheet - Page 4

• Manufacturer Part Number: BU7242NUX
• Description: SILICON MONOLITHIC INTEGRATED CIRCUIT
• Manufacturer: ROHM [Rohm]

○Application example
(1) Absolute maximum ratings
(2)The example of disabled circuit application
(3) Applied voltage to the input terminal
(4) Operating power supply (split power supply/single power supply)
(5) Power dissipation (pd)
(6) Short circuits between pins and incorrect mounting
(7) Output short circuit
(8) Using under strong electromagnetic field
(9) Usage of IC
(10) Testing IC on the set board
(11) The IC destruction caused by capacitive load
(12) Latch up
(13) Decupling capacitor
when there is a circuit not in use. It is recommended to make the
non-inverting input terminal be the potential in the common-mode
input voltage range like Fig.1.
Be careful of input vltage that exceed the VDD and VSS. When CMOS device have sometimes occur
latch up operation. And protect the IC from abnormaly noise
Absolute maximum ratings are the values which indicate the limits,
For normal circuit operation of operational amplifier, please input voltage for its
input terminal within input common mode voltage VDD+0.3[V].
Then, regardless of power supply voltage,VSS-0.3[V] can be applied to input
terminals without deterioration or destruction of its characteristics.
The operational amplifier operates if a given level of voltage is applied between VDD and
VSS. Therefore, the operational amplifier can be operated under single power supply
or split power supply.
If the IC is used under excessive power dissipation. An increase in the chip temperature will cause
deterioration of the radical characteristics of IC.
For example, reduction of current capability. Take consideration of the effective power dissipation and
thermal design with a sufficient margin. Pd is reference to the provided power dissipation curve.
Short circuits between pins and incorrect mounting when mounting the IC on a printed circuits board,
take notice of the direction and positioning of the IC.
If IC is mounted erroneously, It may be damaged. Also, when a foreign object is inserted between
output, between output and VDD terminal or VSS terminal which causes short circuit, the IC may be damaged.
If short circuit occurs between the output terminal and VDD terminal, excessive
in output current may flow and generate heat, causing destruction of the IC. Take due care.
Be careful when using the IC under strong electromagnetic field because it may malfunction.
When stress is applied to the IC through warp of the printed circuit board,
The characteristics may fluctuate due to the piezo effect.
Be careful of the warp of the printed circuit board.
When testing IC on the set board, in cases where the capacitor is connected to the low impedance,
make sure to discharge per fabrication because there is a possibility that IC may be damaged by stress.
When removing IC from the set board, it is essential to cut supply voltage.
As a countermeasure against the static electricity, observe proper grounding during fabrication process
and take due care when carrying and storage it.
The transistors in circuits may be damaged when VDD terminal and VSS terminal is shorted with the charged
output terminal capacitor.When IC is used as a operational amplifier or as an application circuit,
where oscillation is not activated by an output capacitor,the output capacitor must be kept below
0.1[μF] in order to prevent the damage mentioned above.
Insert the deculing capacitance between VDD and VSS, for stable operation of operational amplifier.
within which the given voltage range can be safely charged to the terminal.
However, it does not guarantee the circuit operation.
REV. E
connect
to Vicm
Fig.1 The example of
disabled circuit
－
＋
VDD
VSS
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