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AD2437 데이터시트(PDF) 20 Page - Analog Devices

부품명 AD2437
상세설명  A2B Transceiver
PDF  42 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD2437 데이터시트(HTML) 20 Page - Analog Devices

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Rev. 0
|
Page 20 of 42
|
July 2023
AD2437
Table 7. I2S Target (A2B Main Node) DTXn Enable and Three-State Timing
IOVDD = 1.8 V
IOVDD = 3.3 V
Unit
Parameter
Min
Max
Min
Max
Switching Characteristics
1
tDOENM
DTXn Data Enable Delay After BCLK Drive Edge
5.0
4.0
ns
tDODIM
DTXn Data Disable Delay After BCLK Drive Edge
14.5
10.5
ns
1 Refer to the A2B_TXOFFSET register for three-state programming details.
Figure 18. I2S Target (A2B Main Node) DTXn Enable and Three-State Timing
Table 8. Pulse Density Modulation (PDM) Microphone Input Timing
IOVDD = 1.8 V
IOVDD = 3.3 V
Parameter
Min
Max
Min
Max
Unit
Timing Requirements
tPDMSS
PDMn Input Setup Before BCLK/PDMCLK
17.5
12.0
ns
tPDMHS
PDMn Input Hold After BCLK/PDMCLK
0
0
ns
Switching Characteristics
fPDMCLK
BCLK/PDMCLK Output Frequency at fSYNC = 48 kHz
3.040
3.104
3.040
3.104
MHz
tPDMCLKOJ
BCLK/PDMCLK Output Jitter RMS Cycle to Cycle
150
150
ps
tPDMCLKW
BCLK/PDMCLK Output Pulse Width
161.0
162.5
ns
Figure 19. PDM Timing
DRIVE EDGE
DRIVE EDGE
tDOENM
tDODIM
TRANSMIT DATA
(DTXn) CHANNEL
BCLK
DRIVE EDGE
SAMPLE EDGE
tPDMHS
tPDMCLKW
tPDMSS
RECEIVE PDMn
DATA CHANNEL
BCLK/PDMCLK
PDMn (MIC-0)



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