ROHM BU7242NUX

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STRUCTURE
SILICON MONOLITHIC INTEGRATED CIRCUIT
FUNCTION
INPUT/OUTPUT FULL SWING CMOS OPERATIONAL AMPLIFIER
BU7242F BU7242FVM BU7242NUX
BU7242SF BU7242SFVM BU7242SNUX
PRODUCT SERIES
・Low power supply voltage operation(1.8[V]~5.5[V])
・Wide operating temperature range (BU7242S:-40[℃]~+105[℃])
・Wide input and output voltage range(VSS~VDD)
・Low input bias current(1[pA] typ.)
・Low supply current(180[μA] typ.)
・Small Package VSON008X2030(BU7242NUX)
FEATURES
○ABSOLUTE MAXIMUM RATINGS (Ta=25[℃])
Parameter
Supply Voltage
Symbol
Rating
Unit
VDD-VSS
+7
V
Power dissipation
SOP8
620(*1)(*4)
MSOP8
480(*2)(*4)
VSON008X2030
412(*3)(*4)
Pd
Differential Input Voltage (*5)
Vid
Input Common-mode Voltage Range
Vicm
Operating Temperature range
mW
VDD-VSS
V
(VSS-0.3)~VDD+0.3
V
BU7242
-40~+85
BU7242S
-40~+105
Topr
℃
Storage Temperature Range
Tstg
-55~+125
℃
Maximum junction Temperature
Tjmax
+125
℃
・This IC is not designed for protection against radioactive rays.
(*1) To use at temperature above Ta=25[℃] reduce 6.2[mW].
(*2) To use at temperature above Ta=25[℃] reduce 4.8[mW].
(*3) To use at temperature above Ta=25[℃] reduce 4.12[mW].
(*4) Mounted on a glass epoxy PCB(70[mm]×70[mm]×1.6[mm]).
(*5) The voltage difference between inverting input and non-inverting input is the differential input voltage.
Then input terminal voltage is set to more than VSS.
○OPERATING CONDITION(BU7242:Ta=-40~+85[℃]
Parameter
Supply Voltage
BU7242S:Ta=-40~+105[℃])
Symbol
Rating
Unit
VDD
+1.8~+5.5 (Single Supply)
V
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○ELECTRICAL CHARACTERISTICS (unless otherwise specified VDD=+3[V]、VSS=0[V])
Parameter
Guaranteed Limit
Temperature
Symbol
range
Input offset voltage (*6)(*8)
Vio
Min.
Typ.
Unit
25℃
-
1
9
Full range
-
-
10
mV
Input offset current (*6)
Iio
25℃
-
1
-
pA
Input bias current (*6)
Ib
25℃
-
1
-
pA
Supply current(*8)
Condition
Max.
25℃
-
180
360
Full range
-
-
600
IDD
μA
VDD=1.8~5.5[V],VOUT=VDD/2
RL=∞ All Op-Amps
AV=0[dB],VIN=1.5[V]
High level output voltage
VOH
25℃
VDD-0.1
-
-
V
RL=10[kΩ]
Low level output voltage
VOL
25℃
-
-
VSS+0.1
V
RL=10[kΩ]
Large signal voltage gain
AV
25℃
70
95
-
dB
RL=10[kΩ]
Input common mode voltage
Vicm
25℃
0
-
3
V
VDD-VSS=3[V]
Common mode rejection ratio
CMRR
25℃
45
60
-
dB
Power supply rejection ratio
PSRR
25℃
60
80
-
dB
Output source current (*7)
IOH
25℃
4
10
-
mA
VDD-0.4[V]
Output sink current (*7)
IOL
25℃
5
12
-
mA
VSS+0.4[V]
Slew rate
SR
25℃
-
0.4
-
V/μs
CL=25[pF]
Gain band width
FT
25℃
-
0.9
-
MHz
Phase margin
θ
25℃
-
50°
-
Total harmonics distortion
THD
25℃
-
0.05
-
%
VOUT=1[Vp-p],f=1[kHz]
Channel separation
CS
25℃
-
100
-
dB
Av=40[dB]
CL=25[pF],AV=40[dB]
CL=25[pF],AV=40[dB]
(*6) Absolute value
(*7) Reference to power dissipation under the high temperature environment and decide the output current.
Continuous short circuit is occurring the degenerate of output current characteristics.
(*8) Full range BU7242:Ta=-40[℃]~+85[℃] BU7242S:Ta=-40[℃]~+105[℃]
○Block Diagram
○Pin No.・Pin Name
Pin No.
1
2
3
4
5
6
7
8
VDD OUT2 IN2- IN2+
8
6
7
5
-
CH2
+
+
CH1
-
1
2
3
4
OUT1 IN1- IN1+ VSS
F:SOP8
FVM:MSOP8
NUX:VSON008X2030
REV. E
Pin Name
OUT1
IN1IN1+
VSS
IN2+
IN2OUT2
VDD
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○ Physical Dimensions
7 2 4
2
LOT No.
BU7242FVM(MSOP8)(Unit:[mm])
BU7242F(SOP8)(Unit:[mm])
724
2
Lot No.
BU7242SF(SOP8)(Unit:[mm])
BU7242NUX(VSON008X2030)(Unit:[mm])
724
2S
Lot No.
7 2 4
2
S
LOT No.
BU7242SFVM(MSOP8)(Unit:[mm])
BU7242SNUX(VSON008X2030)(単位:[mm])
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○Application example
(1) Absolute maximum ratings
Absolute maximum ratings are the values which indicate the limits,
within which the given voltage range can be safely charged to the terminal.
However, it does not guarantee the circuit operation.
(2)The example of disabled circuit application
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.
VDD
-
connect
+
to Vicm
(3) Applied voltage to the input terminal
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.
VSS
Fig.1 The example of
disabled circuit
(4) Operating power supply (split power supply/single power supply)
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.
(5) Power dissipation (pd)
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.
(6) Short circuits between pins and incorrect mounting
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.
(7) Output short circuit
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.
(8) Using under strong electromagnetic field
Be careful when using the IC under strong electromagnetic field because it may malfunction.
(9) Usage of IC
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.
(10) Testing IC on the set 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.
(11) The IC destruction caused by capacitive load
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.
(12) Latch up
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
(13) Decupling capacitor
Insert the deculing capacitance between VDD and VSS, for stable operation of operational amplifier.
REV. E
Notice
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