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AK7719 Datasheet(PDF) 8 Page - Asahi Kasei Microsystems |
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AK7719 Datasheet(HTML) 8 Page - Asahi Kasei Microsystems |
8 / 16 page [AK7719] MS1351-E-00-PB 2012/01 8 ■ System Clock (Ta= -20ºC ~ 85ºC, VDD=1.2V, TVDD= 1.6V ~ 3.6V, VSS=0V) CL=20pF (except SDA pin) or 400pF (SDA pin); unless otherwise specified Parameter Symbol min typ max Unit Normal Operation mode: SYNC1/3, BCLK1/BCLK3 Input Timing SYNC1/3 Input Timing SYNC1/3 frequency fs 8 48 kHz BCLK1 Input Timing (Note 8, Note 9) fBCLK 64 3072 kHz BCLK1/3 Pulse width Low tBCKL 0.4 x tBCLK ns BCLK1/3 Pulse width High tBCKH 0.4x tBCLK ns Note 8. SYNC1 and BCLK1 or SYNC3 and BCLK3 should be synchronized and their sampling rates (fs) should be stable Note 9. Required fBCLK: ≥ 2 (Data length set by LAW bit) x SYNC2 frequency ■ Reset and Standby (Ta= -20ºC ~ 85ºC, VDD=1.2V, TVDD= 1.6V ~ 3.6V, VSS=0V) Parameter Symbol min typ max Unit PDN (Note 10) tPDN 600 ns Note 10. The AK7719 can be reset by bringing the PDN pin = “L” upon power-up. ■ Serial Data Interface (Ta= -20ºC ~ 85ºC, TVDD= 1.6V ~ 3.6V, VSS=0V, CL=20pF) Parameter Symbols min typ max Unit SDIN1, SDIN3, SDIN4, SDOUT1, SDOUT3, SDOUT4 Delay Time from BCLK1 “↑” to SYNC1 “↑” (Note 11) tBSYD 20 ns Delay Time from SYNC1 “↓” to BCLK1 “↑” tSYBD 100 ns Serial Data Input Latch Setup Time tB1IDS 40 ns Serial Data Input Latch Hold Time tB1IDH 40 ns Delay Time from SYNC1 to Serial Data Output tSY1OD 40 ns Delay Time from BCLK1 “↓” to Serial Data Output (Note 12) tB1OD 40 ns SDIN2, SDOUT2 SYNC2 Duty cycle 50 % Serial Data Input Latch Setup Time tB2IDS 40 ns Serial Data Input Latch Hold Time tB2IDH 40 ns Delay Time from SYNC2 to Serial Data Outputs tSY2OD 40 ns Delay Time from BCLK2 “↓”to Serial Data Output (Note 13) tB2OD 40 ns SDINn → SDOUTn (n=1, 2, 3) Delay time from SDINn to SDOUTn Output tIOD 60 ns Note 11. When the polarity of BCLK1 is inverted, delay time is from BCLK1 “ ↓” Note 12. When the polarity of BCLK1 is inverted, delay time is from BCLK1 “↑”. Note 13. When the polarity of BCLK2 is inverted, delay time is from BCLK2 “↑”. SWITCHING CHARACTERISTICS |
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