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BU7232FVM-TR Datasheet, PDF (13/17 Pages) Rohm – Low Voltage CMOS Comparator | |||
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â Description of electrical characteristics
Described here are the terms of electric characteristics used in this technical note. Items and symbols used are also shown.
Note that item name and symbol and their meaning may differ from those on another manufactureâs document or general document.
1. Absolute maximum ratings
Absolute maximum rating item indicates the condition which must not be exceeded. Application of voltage in excess of absolute
Maximum rating or use out of absolute maximum rated temperature environment may cause deterioration of characteristics.
1.1 Power supply voltageï¼VDD/VSSï¼
Indicates the maximum voltage that can be applied between the positive power supply terminal and negative power supply terminal
without deterioration or destruction of characteristics of internal circuit.
1.2 Differential input voltage ï¼Vidï¼
Indicates the maximum voltage that can be applied between non-inverting terminal and inverting terminal without deterioration and
destruction of characteristics of IC.
1.3 Input common-mode voltage range ï¼Vicmï¼
Indicates the maximum voltage that can be applied to non-inverting terminal and inverting terminal without deterioration or destruction of
characteristics. Input common-mode voltage range of the maximum ratings not assure normal operation of IC. When normal
operation of IC is desired, the input common-mode voltage of characteristics item must be followed.
1.4 Power dissipation ï¼Pdï¼
Indicates the power that can be consumed by specified mounted board at the ambient temperature 25â(normal temperature). As for
package product, Pd is determined by the temperature that can be permitted by IC chip in the packageï¼maximum junction temperatureï¼
and thermal resistance of the package
2. Electrical characteristics item
2.1 Input offset voltage ï¼Vioï¼
Indicates the voltage difference between non-inverting terminal and inverting terminal. It can be translated into the input voltage
difference required for setting the output voltage at 0 [V]
2.2 Input offset current ï¼Iioï¼
Indicates the difference of input bias current between non-inverting terminal and inverting terminal.
2.3 Input bias current ï¼Ibï¼
Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias current at non-inverting terminal
and input bias current at inverting terminal.
2.4 Input common-mode voltage range ï¼Vicmï¼
Indicates the input voltage range where IC operates normally.
2.5 Large signal voltage gain ï¼AVï¼
Indicates the amplifying rate (gain) of output voltage against the voltage difference between non-inverting terminal and inverting
terminal.
It is normally the amplifying rate (gain) with reference to DC voltage.
Av = (Output voltage fluctuation) / (Input offset fluctuation)
2.6 Circuit current ï¼ICCï¼
Indicates the IC current that flows under specified conditions and no-load steady status.
2.7 Output sink current ï¼OLï¼
Indicates the maximum current that can be output under specified output condition (such as output voltage and load condition).
2.8 Output saturation voltage, Low level output voltage ï¼VOLï¼
Indicates the voltage range that can be output under specified load conditions.
2.9 Output leakage current, High level output currentï¼I leakï¼
Indicates the current that flows into IC under specified input and output conditions.
2.10 Response Time ï¼Treï¼
The interval between the application of an input and output condition.
2.11 Common-mode rejection ratio ï¼CMRRï¼
Indicates the ratio of fluctuation of input offset voltage when in-phase input voltage is changed. It is normally the fluctuation of DC.
CMRR ï¼ï¼Change of Input common-mode voltageï¼/ï¼Input offset fluctuationï¼
2.12 Power supply rejection ratio ï¼PSRRï¼
Indicates the ratio of fluctuation of input offset voltage when supply voltage is changed. It is normally the fluctuation of DC.
PSRRï¼ï¼Change of power supply voltageï¼/ï¼Input offset fluctuationï¼
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