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WM8778SEDS/R 데이터시트(PDF) 6 Page - Wolfson Microelectronics plc

부품명 WM8778SEDS/R
상세설명  24 BIT 192KHZ STEREO CODEC
PDF  50 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8778SEDS/R 데이터시트(HTML) 6 Page - Wolfson Microelectronics plc

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PP Rev 1.7 June 2004
6
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital supply range
DVDD
2.7
3.6
V
Analogue supply range
AVDD, DACREFP
2.7
5.5
V
Ground
AGND, DGND,
DACREFN,
ADCREFGND
0
V
Difference DGND to AGND
-0.3
0
+0.3
V
Note: Digital supply DVDD must never be more than 0.3V greater than AVDD.
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25
oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels (TTL Levels)
Input LOW level
VIL
0.8
V
Input HIGH level
VIH
2.0
V
Output LOW
VOL
IOL=1mA
0.1 x DVDD
V
Output HIGH
VOH
IOH=1mA
0.9 x DVDD
V
Analogue Reference Levels
Reference voltage
VVMID
AVDD/2
V
Potential divider resistance
RVMID
50k
Ω
DAC Performance (Load = 10k Ω, 50pF)
0dBFs Full scale output voltage
1.0 x
AVDD/5
Vrms
SNR (Note 1,2)
A-weighted,
@ fs = 48kHz
100
108
dB
SNR (Note 1,2)
A-weighted
@ fs = 96kHz
108
dB
Dynamic Range (Note 2)
DNR
A-weighted, -60dB
full scale input
100
108
dB
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-97
-90
dB
DAC channel separation
100
dB
1kHz 100mVpp
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
dB
ADC Performance
Input Signal Level (0dB)
1.0 x
AVDD/5
Vrms
SNR (Note 1,2)
A-weighted, 0dB gain
@ fs = 48kHz
93
102
dB
SNR (Note 1,2)
A-weighted, 0dB gain
@ fs = 96kHz
64 x OSR
99
dB
Dynamic Range (note 2)
A-weighted, -60dB
full scale input
102
dB
1kHz, 0dBFs
-90
dB
Total Harmonic Distortion (THD)
1kHz, -3dBFs
-95
-85
dB
ADC Channel Separation
1kHz Input
90
dB



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