S-89531ACNC-HCCTFG datasheet(7/16 Pages) SII

Part #	S-89531ACNC-HCCTFG

Description	MINI ANALOG SERIES 0.7 uA Rail-to-Rail CMOS COMPARATOR

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Manufacturer	SII [Seiko Instruments Inc]

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MINI ANALOG SERIES

0.7

μA Rail-to-Rail CMOS COMPARATOR

Rev.4.1_01

S-89530A/89531A Series

7



Measurement Circuits

1. Power supply voltage rejection ratio

+

−

VOUT

VDD

VIN

0.45 V

Figure 6



The power supply voltage rejection ratio (PSRR) is

calculated by the following expression, with the value of

VIO measured at each VDD.

Measurement conditions:

When VDD

= 0.9 V: VDD = VDD1, VIO = VIO1

When VDD

= 5.5 V: VDD = VDD2, VIO = VIO2













−

=

IO2

IO1

DD2

DD1

V

20log

PSRR

2. Input offset voltage

−

+

VOUT

VDD

VIN

VCMR

= VDD/2

Figure 7



Input offset voltage (VIO)

The input offset voltage (VIO) is defined as VIN at which

VOUT changes by changing VIN.

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S-89531ACNC-HCCTFG Datasheet(PDF) 7 Page - Seiko Instruments Inc

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