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CXP87452 Datasheet(PDF) 24 Page - Sony Corporation |
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CXP87452 Datasheet(HTML) 24 Page - Sony Corporation |
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24 / 32 page  – 24 – CXP87452/87460 Fig. 7. Definitions of A/D converter terms Conversion time Sampling time Reference input voltage Analog input voltage tCONV tSAMP VREF VIAN AVREF AN0 to AN11 IREF Only for A/D converter operation Ta = 25°C VDD = AVDD = AVREF = 5.0V VSS = AVSS = 0V Operating mode AVREF = 4.0 to 5.5V VDD = AVDD = 4.5 to 5.5V SLEEP mode STOP mode Linearity error Absolute error Resolution AVREF current AVREF µs µs V V AVDD AVREF 1.0 mA 10 µA 0.6 160/fADC 12/fADC AVDD – 0.5 0 Item Symbol Pin Condition Min. Typ. Max. Unit Bits (3) A/D converter characteristics (Ta = –20 to +75°C, VDD = AVDD = 4.5 to 5.5V, AVREF = 4.0 to AVDD, Vss = AVSS = 0V) 8 ±1 ±2 LSB LSB Analog input Linearity error VFT VZT 00H 01H FEH FFH ∗ The value of f ADC is as follows by selecting ADC operation clock (MSC: Address 01FFH bit 0). When PS2 is selected, fADC = fc/2 When PS1 is selected, fADC = fc Conversion time Sampling time Reference input voltage Analog input voltage tCONV tSAMP VREF VIAN AVREF AN0 to AN11 IREF Only for A/D converter operation Ta = 25°C VDD = AVDD = AVREF = 3.3V VSS = AVSS = 0V Operating mode AVREF = 2.7 to 3.6V SLEEP mode STOP mode Linearity error Absolute error Resolution AVREF current AVREF µs µs V V AVDD AVREF 0.7 mA 10 µA 0.4 160/fADC 12/fADC AVDD – 0.3 0 Item Symbol Pin Condition Min. Typ. Max. Unit Bits (Ta = –20 to +75°C, VDD = AVDD = 3.0 to 3.6V, AVREF = 2.7 to AVDD, Vss = AVSS = 0V) 8 ±1 ±2 LSB LSB A/D converter characteristics VDD = AVDD = 3.0 to 3.6V |
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