25°C < TA < +85°C, I" />
參數(shù)資料
型號(hào): ADAU1781BCPZ-RL7
廠商: Analog Devices Inc
文件頁數(shù): 3/92頁
文件大?。?/td> 0K
描述: IC SIGMADSP CODEC LN 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
系列: SigmaDSP®
類型: 立體聲音頻
數(shù)據(jù)接口: I²C,串行,SPI?
分辨率(位): 24 b
ADC / DAC 數(shù)量: 2 / 2
三角積分調(diào)變:
S/N 比,標(biāo)準(zhǔn) ADC / DAC (db): 100 / 105(差分),100 / 103(單端)
動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db): 99.2 / 105(差分),99.2 / 103(單端)
電壓 - 電源,模擬: 1.8 V ~ 3.65 V
電壓 - 電源,數(shù)字: 1.63 V ~ 3.65 V
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ
包裝: 帶卷 (TR)
ADAU1781
Rev. B| Page 11 of 92
DIGITAL TIMING SPECIFICATIONS
25°C < TA < +85°C, IOVDD = 1.62 V to 3.63 V, unless otherwise specified.
Table 7. Digital Timing
Limit
Parameter
t
MIN
t
MAX
Unit
Description
MASTER CLOCK
t
MP
50
90.9
ns
Master clock (MCLK) period (that is, period of the signal input to MCKI).
Duty Cycle
30
70
%
SERIAL PORT
t
BIL
10
ns
BCLK pulse width low.
t
BIH
10
ns
BCLK pulse width high.
t
LIS
5
ns
LRCLK setup. Time to BCLK rising.
t
LIH
5
ns
LRCLK hold. Time from BCLK rising.
t
SIS
5
ns
DAC_SDATA setup. Time to BCLK rising.
t
SIH
5
ns
DAC_SDATA hold. Time from BCLK rising.
t
SODM
70
ns
ADC_SDATA delay. Time from BCLK falling in master mode.
SPI PORT
f
CCLK,R
5
MHz
CCLK frequency, read operation, IOVDD = 1.8 V ± 10%.
f
CCLK,R
10
MHz
CCLK frequency, read operation, IOVDD = 3.3 V ± 10%.
f
CCLK,W
25
MHz
CCLK frequency, write operation, IOVDD = 1.8 V ± 10%.
f
CCLK,W
25
MHz
CCLK frequency, write operation, IOVDD = 3.3 V ± 10%.
t
CCPL
10
ns
CCLK pulse width low.
t
CCPH
10
ns
CCLK pulse width high.
t
CLS
10
ns
CLATCH setup. Time to CCLK rising.
t
CLH
5
ns
CLATCH hold. Time from CCLK rising.
t
CLPH
10
ns
CLATCH pulse width high.
t
CDS
5
ns
CDATA setup. Time to CCLK rising.
t
CDH
5
ns
CDATA hold. Time from CCLK rising.
t
COD
70
COUT delay from CCLK edge to valid data, IOVDD = 1.8 V ± 10%.
40
ns
COUT delay from CCLK edge to valid data, IOVDD = 3.3 V ± 10%.
I2C PORT
f
SCL
400
kHz
SCL frequency.
t
SCLH
0.6
s
SCL high.
t
SCLL
1.3
s
SCL low.
t
SCS
0.6
s
Setup time; relevant for repeated start condition.
t
SCH
0.6
s
Hold time. After this period, the first clock is generated.
t
DS
100
ns
Data setup time.
t
SCR
300
ns
SCL rise time.
t
SCF
300
ns
SCL fall time.
t
SDR
300
ns
SDA rise time.
t
SDF
300
ns
SDA fall time.
t
BFT
0.6
s
Bus-free time. Time between stop and start.
DIGITAL MICROPHONE
R
L = 1 M, CL = 14 pF.
t
DCF
10
ns
Digital microphone clock fall time.
t
DCR
10
ns
Digital microphone clock rise time.
t
DDV
22
30
ns
Digital microphone delay time for valid data.
t
DDH
0
12
ns
Digital microphone delay time for data three-stated.
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