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ADMP441_1209 Datenblatt(PDF) 4 Page - Analog Devices |
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ADMP441_1209 Datenblatt(HTML) 4 Page - Analog Devices |
4 / 16 page ADMP441 Data Sheet Rev. B | Page 4 of 16 I²S DIGITAL INPUT/OUTPUT –40°C < TA < +85°C, 1.8 V < VDD < 3.3 V, unless otherwise noted. Table 2. Limit1 Parameter Symbol Test Conditions/Comments Min Max Unit DIGITAL INPUT Voltage Input Low (L/R, WS, SCK) V IL 0 0.25 × VDD V Voltage Input High (L/R, WS, SCK) V IH 0.7 × V DD V DD V SD DIGITAL OUTPUT Voltage Output Low V OL V DD = 1.8 V, ISINK = 0.25 mA 0.1 × V DD V Voltage Output Low V OL V DD = 1.8 V, ISINK = 0.7 mA 0.3 × V DD V Voltage Output High V OH V DD = 1.8 V, ISINK = 0.7 mA 0.7 × V DD V Voltage Output High V OH V DD = 1.8 V, ISINK = 0.25 mA 0.9 × V DD V Voltage Output Low V OL V DD = 3.3 V, ISINK = 0.5 mA 0.1 × V DD V Voltage Output Low V OL V DD = 3.3 V, ISINK = 1.7 mA 0.3 × V DD V Voltage Output High V OH V DD = 3.3 V, ISINK = 1.7 mA 0.7 × V DD V Voltage Output High V OH V DD = 3.3 V, ISINK = 0.5 mA 0.9 × V DD V 1 Limits based on characterization results; not production tested. Table 3. Serial Data Port Timing Specifications Parameter Description Min Max Unit t SCH SCK high 50 ns t SCL SCK low 50 ns t SCP SCK period 312 ns f SCK SCK frequency 0.5 3.2 MHz t WSS WS setup 0 ns t WSH WS hold 20 ns f WS WS frequency 7.8 49.3 kHz TIMING DIAGRAM SCK WS SD tSCP tSCH tSCL tWSH tWSS Figure 3. Serial Data Port Timing |
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