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WM8773 参数 Datasheet PDF下载

WM8773图片预览
型号: WM8773
PDF下载: 下载PDF文件 查看货源
内容描述: 24位, 96kHz的ADC ,8通道I / P多路复用器 [24-bit, 96kHz ADC with 8 Channel I/P Multiplexer]
分类和应用: 复用器
文件页数/大小: 30 页 / 273 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8773  
Product Preview  
RECOMMENDED OPERATING CONDITIONS  
PARAMETER  
SYMBOL  
TEST CONDITIONS  
MIN  
2.7  
TYP  
MAX  
3.6  
UNIT  
Digital supply range  
Analogue supply range  
Ground  
DVDD  
V
V
V
V
AVDD  
2.7  
5.5  
AGND, DGND  
0
0
Difference DGND to AGND  
-0.3  
+0.3  
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 = +25oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.  
PARAMETER  
SYMBOL  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
Digital Logic Levels (TTL Levels)  
Input LOW level  
VIL  
VIH  
0.8  
V
V
V
V
Input HIGH level  
2.0  
Output LOW  
VOL  
VOH  
0.1 x DVDD  
IOL=1mA  
IOH-1mA  
Output HIGH  
0.9 x DVDD  
Analogue Reference Levels  
Reference voltage  
VVMID  
AVDD/2 –  
50mV  
AVDD/2  
50k  
AVDD/2 +  
50mV  
V
Potential divider resistance  
RVMID  
AVDD to VMIDADC  
and VMIDADC to  
AGND  
40k  
60k  
Ohms  
ADC Performance  
Input Signal Level (0dB)  
1.0 x  
AVDD/5  
102  
Vrms  
dB  
SNR (Note 1,2)  
SNR (Note 1,2)  
A-weighted, 0dB gain  
@ fs = 48kHz  
93  
A-weighted, 0dB gain  
@ fs = 96kHz  
98  
dB  
Dynamic Range (note 2)  
A-weighted, -60dB  
full scale input  
102  
dB  
Total Harmonic Distortion (THD)  
kHz, 0dBFs  
1kHz, -3dBFs  
1kHz Input  
-90  
-95  
90  
-80  
-85  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
dB  
ADC Channel Separation  
Programmable Gain Step Size  
Programmable Gain Range  
Mute Attenuation  
0.5  
-12  
1.0  
1.5  
1kHz Input  
1kHz Input, 0dB gain  
1kHz 100mVpp  
+19  
97  
50  
45  
Power Supply Rejection Ratio  
PSRR  
20Hz to 20kHz  
100mVpp  
PP Rev 1.0 June 2002  
6
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