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WM8776 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

Part # WM8776
Description  24 BIT 192KHZ STEREO CODEC WITH 5 CHANNEL I/P MULTIPLEXER
PDF  55 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8776 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

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PP Rev 1.91 June 2004
6
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
IOL=1mA
0.1 x DVDD
V
Output HIGH
VOH
IOH=1mA
0.9 x DVDD
V
Analogue Reference Levels
Reference voltage
VVMID
AVDD/2
V
Potential divider resistance
RVMID
50k
Ω
DAC Performance (Load = 10k Ω, 50pF)
0dBFs Full scale output voltage
1.0 x
AVDD/5
Vrms
SNR (Note 1,2)
A-weighted,
@ fs = 48kHz
108
dB
SNR (Note 1,2)
A-weighted
@ fs = 96kHz
108
dB
Dynamic Range (Note 2)
DNR
A-weighted, -60dB
full scale input
108
dB
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-97
-90
dB
DAC channel separation
100
dB
1kHz 100mVpp
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
dB
Headphone Buffer
Maximum Output voltage
0.9
Vrms
RL = 32 Ω
25
mW
Max Output Power (Note 4)
Po
RL = 16 Ω
50
mW
SNR (Note 1,2)
A-weighted
85
92
dB
Headphone analogue Volume
Gain Step Size
0.5
1
1.5
dB
Headphone analogue Volume
Gain Range
1kHz Input
-73
+6
dB
Headphone analogue Volume
Mute Attenuation
1kHz Input, 0dB gain
100
dB
1kHz, RL = 32Ω @ Po =
10mW rms
-80
0.01
-60
0.1
dB
%
Total Harmonic Distortion
+Noise
THD+N
1kHz, RL = 32Ω @ Po =
20mW rms
-77
0.014
-40
1.0
dB
%
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz, without
supply decoupling
-40
dB
ADC Performance
Input Signal Level (0dB)
1.0 x
AVDD/5
Vrms
SNR (Note 1,2)
A-weighted, 0dB gain
@ fs = 48kHz
102
dB
SNR (Note 1,2)
A-weighted, 0dB gain
@ fs = 96kHz
64 x OSR
100
dB
Dynamic Range (note 2)
A-weighted, -60dB
full scale input
102
dB
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-90
-80
DB



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