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WM8785GEDS/V Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

No. de pieza WM8785GEDS/V
Descripción Electrónicos  24-Bit, 192kHz Stereo ADC
PDF  31 Pages
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Fabricante Electrónico  WOLFSON [Wolfson Microelectronics plc]
Página de inicio  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8785GEDS/V Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

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WM8785
Production Data
w
PD Rev 4.1 December 2006
6
ELECTRICAL CHARACTERISTICS
Test Conditions
DVDD = 3.3V, AVDD = 5.0V, TA = +25
oC, 1kHz signal, A-weighted, fs = 48kHz, MCLK = 256fs, 24-bit audio data, Slave Mode
unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC Performance
Full Scale Input Signal Level
(for ADC 0dB Input)
2.0
Vrms
Input resistance
10
k
Ω
Input capacitance
10
pF
A-weighted,
@ fs = 48kHz
102
111
dB
Signal to Noise Ratio (Note
1,2,4)
SNR
Unweighted,
@ fs = 48kHz
108
dB
A-weighted,
@ fs = 96kHz
111
dB
Signal to Noise Ratio (Note
1,2,4)
SNR
Unweighted,
@ fs = 96kHz
108
dB
A-weighted,
@ fs = 192kHz
111
dB
Signal to Noise Ratio (Note
1,2,4)
SNR
Unweighted,
@ fs = 192kHz
108
dB
1kHz, -0.1dB Full Scale
@ fs = 48kHz
-102
-92
dB
1kHz, -0.1dB Full Scale
@ fs = 96kHz
-102
dB
Total Harmonic Distortion
THD
1kHz, -0.1dB Full Scale
@ fs = 192kHz
-102
dB
Total Harmonic Distortion
THD
1kHz, -0.1dB Full Scale
@ fs = 48kHz
0.0008
0.0025
%
1kHz, -0.1dB Full Scale
@ fs = 96kHz
0.0008
%
1kHz, -0.1dB Full Scale
@ fs = 192kHz
0.0008
%
Dynamic Range
DNR
-60dBFS
102
111
dB
Channel Level Matching
20kHz signal
0.1
dB
1kHz 100mVpp, applied
to AVDD, DVDD
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
dB
Digital Logic Levels (CMOS Levels)
Input LOW level
VIL
0.3 x DVDD
V
Input HIGH level
VIH
0.7 x DVDD
V
Input leakage current
-1
±0.2
+1
µA
Input capacitance
5
pF
Output LOW
VOL
IOL=1mA
0.1 x DVDD
V
Output HIGH
VOH
IOH= -1mA
0.9 x DVDD
V
Analogue Reference Levels
Midrail Reference Voltage
VMID
AVDD to VMID and
VMID to VREFGND
–3%
AVDD/2
+3%
V
Potential Divider Resistance
RVMID
AVDD to VMID and
VMID to GND
50
k
Ω
Buffered Reference Voltage
VREF
–3%
0.8 x AVDD
+3%
V



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