XWM8731EDS 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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XWM8731EDS
Wolfson Microelectronics plc
XWM8731EDS Datasheet PDF : 56 Pages
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WM8731
Advanced Information
Test Conditions
AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25oC, Slave Mode, fs = 48kHz, XTI/MCLK =
256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST
MIN
TYP
MAX
UNIT
CONDITIONS
Programmable Gain Boost
MICBOOST bit
1kHz input
34
dB
set
Rsource < 50 Ohms
Mic Path gain (MICBOOST gain
MICBOOST = 0
14
dB
is additional to this nominal
gain)
Rsource < 50 Ohms
Mute attenuation
0dB, 1kHz input
80
dB
Input Resistance
Input Capacitance
RINMIC
CINMIC
8k
10k
12k
Ohms
10
pF
Microphone Bias
Bias Voltage
VMICBIAS
.75*AVDD – 0.75*AVDD .75*AVDD +
V
100mV
100mV
Bias Current Source
Output Noise Voltage
IMICBIAS
Vn
1K to 20kHz
3
mA
25
nV/√Hz
Line Output for DAC Playback Only (Load = 10k ohms. 50pF)
0dBfs Full scale output voltage
At LINE outputs
1.0 x
Vrms
AVDD/3.3
SNR (Note 1,2,3)
A-weighted,
90
100
dB
@ fs = 48kHz
SNR (Note 1,2,3)
A-weighted
98
dB
@ fs = 96kHz
SNR (Note 1,2,3)
A-weighted,
93
dB
@ fs = 48kHz, AVDD
= 2.7V
Dynamic Range (Note 3)
DR
A-weighted, -60dB
85
90
dB
full scale input
THD
1kHz, 0dBfs
-88
-80
dB
1kHz, -3dBfs
-92
-86
dB
Power Supply Rejection Ratio
PSSR
1kHz 100mVpp
50
dB
20Hz to 20kHz
45
dB
100mVpp
DAC channel separation
100
dB
Analogue Line Input to Line Output (Load = 10k ohms. 50pF, No Gain on Input ) Bypass Mode
0dB Full scale output voltage
1.0 x
Vrms
AVDD/3.3
SNR (Note 1, 3)
90
95
dB
THD
1kHz, 0dB
-86
-80
dB
1kHz, -3dB
-92
-86
dB
Power Supply Rejection Ratio
PSSR
1kHz 100mVpp
50
dB
20Hz to 20kHz
45
dB
100mVpp
Mute attenuation
1kHz, 0dB
80
dB
Stereo Headphone Output
0dB Full scale output voltage
1.0 x
Vrms
AVDD/3.3
Max Output Power RL = 32
PO
ohms
30
mW
Max Output Power RL = 16
PO
ohms
40
mW
WOLFSON MICROELECTRONICS LTD
AI Rev 2.0 February 2001
9
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