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WM8731SEDS/V 数据表(PDF) 7 Page - Wolfson Microelectronics plc

部件名 WM8731SEDS/V
功能描述  Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates
PDF  65 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8731SEDS/V 数据表(HTML) 7 Page - Wolfson Microelectronics plc

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WM8731 / WM8731L
Production Data
w
PD, Rev 4.9, October 2012
7
ELECTRICAL CHARACTERISTICS – WM8731
Test Conditions
AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25
oC, Slave Mode, fs = 48kHz, XTI/MCLK =
256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels (CMOS Levels)
Input LOW level
VIL
0.3 x DBVDD
V
Input HIGH level
VIH
0.7 x DBVDD
V
Output LOW
VOL
0.10 x
DBVDD
V
Output HIGH
VOH
0.9 x DBVDD
V
Power On Reset Threshold (DCVDD)
DCVDD Threshold On -> Off
Vth
0.9
V
Hysteresis
VIH
0.3
V
DCVDD Threshold Off -> On
VOL
0.6
V
Analogue Reference Levels
Reference voltage (VMID)
VVMID
AVDD/2
V
Potential divider resistance
RVMID
50k
Ω
Line Input to ADC
Input Signal Level (0dB)
VINLINE
1.0
AVDD/3.3
Vrms
Signal to Noise Ratio
(Note 1,3)
SNR
A-weighted, 0dB gain
@ fs = 48kHz
85
90
dB
A-weighted, 0dB gain
@ fs = 96kHz
90
A-weighted, 0dB gain
@ fs = 48kHz,
AVDD = 2.7V
88
Dynamic Range (Note 3)
DR
A-weighted, -60dB full
scale input
85
90
dB
Total Harmonic Distortion
THD
-1dB input, 0dB gain
-84
0.006
-74
0.02
dB
%
Power Supply Rejection Ratio
PSRR
1kHz, 100mVpp
50
dB
20Hz to 20kHz,
100mVpp
45
ADC channel separation
1kHz input
90
dB
Programmable Gain
1kHz input
Rsource < 50Ω
-34.5
0
+12
dB
Programmable Gain Step Size
Guaranteed Monotonic
1.5
dB
Mute attenuation
0dB, 1kHz input
80
dB
Input Resistance
RINLINE
0dB gain
20k
30k
Ω
12dB gain
10k
15k
Input Capacitance
CINLINE
10
pF



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