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AD1941 数据表(PDF) 4 Page - Analog Devices |
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AD1941 数据表(HTML) 4 Page - Analog Devices |
4 / 36 page AD1940/AD1941 Rev. B | Page 4 of 36 DIGITAL TIMING VDD = 2.25 to 2.75 V. Specifications measured across –40°C to 125°C. Table 4. Digital Timing1 Parameter Mnemonic Comments Min Max Unit MASTER CLOCK, SERIAL DATA PORTS, RESET MCLK Period tMP 512 fS mode 36 244 ns MCLK Period tMP 384 fS mode 48 366 ns MCLK Period tMP 256 fS mode 73 488 ns MCLK Period tMP 64 fS mode 291 1953 ns MCLK Period tMP Bypass mode 12 ns MCLK Duty Cycle tMDC Bypass mode 40 60 % BCLK_IN LO Pulse Width tBIL 4 ns BCLK_IN HI Pulse Width tBIH 2 ns LRCLK_IN Setup tLIS To BCLK_IN rising 12 ns LRCLK_IN Hold tLIH From BCLK_IN rising 0 ns SDATA_INx Setup tSIS To BCLK_IN rising 3 ns SDATA_INx Hold tSIH From BCLK_IN rising 2 ns LRCLK_OUTx Setup tLOS Slave mode 2 ns LRCLK_OUTx Hold tLOH Slave mode 2 ns BCLK_OUTx Falling to LRCLK_OUTx Timing Skew tTS 2 ns SDATA_OUTx Delay tSODS Slave mode, from BCLK_OUTx falling 17 ns SDATA_OUTx Delay tSODM Master mode, from BCLK_OUTx falling 17 ns RESETB LO Pulse Width tRLPW 10 ns SPI PORT (AD1940) CCLK Pulse Width LO tCCPL 1 × INTMCLK (14)2 ns CCLK Pulse Width HI tCCPH 1 × INTMCLK (14)2 ns CLATCH Setup tCLS To CCLK rising 0 ns CLATCH Hold tCLH From CCLK rising 2 × INTMCLK + 4 (32)2 ns CLATCH Pulse Width HI tCLPH 2 × INTMCLK (28)2 ns CDATA Setup tCDS To CCLK rising 0 ns CDATA Hold tCDH From CCLK rising 2 × INTMCLK + 2 (30)2 ns COUT Delay tCOD From CCLK rising 4 × INTMCLK +18 (74)2 ns I2C PORT (AD1941) SCL Clock Frequency fSCL 400 kHz SCL Low tSCLL 1.3 μs SCL High tSCLH 0.6 μs Setup Time (Start Condition) tSCS Relevent for repeated start condition 0.6 μs Hold Time (Start Condition) tSCH First clock generated after this period 0.6 μs Setup Time (Stop Condition) tSSH 0.6 μs Data Setup Time tDS 100 ns SDA and SCL Rise Time tSR 300 ns SDA and SCL Fall Time tSF 300 ns Bus-Free Time tBFT Between stop and start 1.3 μs 1 All timing specifications are given for the default (I2S) states of the serial input control port and the serial output control ports. See Table 37. 2 These specifications are based on the internal master clock period in a specific application. In normal operation, the master clock runs at 1,536 × fs, so the internal master clock at fs = 48 kHz has a 14 ns period. The values in parentheses are the timing values for fs = 48 kHz. |
类似零件编号 - AD1941_15 |
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类似说明 - AD1941_15 |
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