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WM8773 bảng dữ liệu(PDF) 6 Page - Wolfson Microelectronics plc

tên linh kiện WM8773
Giải thích chi tiết về linh kiện  24-bit, 96kHz ADC with 8 Channel I/P Multiplexer
PDF  29 Pages
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM8773 bảng dữ liệu(HTML) 6 Page - Wolfson Microelectronics plc

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WM8773
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PP Rev 1.0 June 2002
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
2.7
5.5
V
Ground
AGND, DGND
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
I
OL=1mA
0.1 x DVDD
V
Output HIGH
VOH
I
OH-1mA
0.9 x DVDD
V
Analogue Reference Levels
Reference voltage
VVMID
AVDD/2 –
50mV
AVDD/2
AVDD/2 +
50mV
V
Potential divider resistance
RVMID
AVDD to VMIDADC
and VMIDADC to
AGND
40k
50k
60k
Ohms
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
98
dB
Dynamic Range (note 2)
A-weighted, -60dB
full scale input
102
dB
kHz, 0dBFs
-90
-80
dB
Total Harmonic Distortion (THD)
1kHz, -3dBFs
-95
-85
dB
ADC Channel Separation
1kHz Input
90
dB
Programmable Gain Step Size
0.5
1.0
1.5
dB
Programmable Gain Range
1kHz Input
-12
+19
dB
Mute Attenuation
1kHz Input, 0dB gain
97
dB
1kHz 100mVpp
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
dB



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