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WM8770 Datenblatt(PDF) 7 Page - Wolfson Microelectronics plc

Teilenummer WM8770
Bauteilbeschribung  24-bit, 192kHz 8-Channel Codec with Volume Control
PDF  52 Pages
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Hersteller  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8770 Datenblatt(HTML) 7 Page - Wolfson Microelectronics plc

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Production Data
WM8770
w
PD Rev 4.1 June 2005
7
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25
oC, fs = 48kHz, MCLK = 256fs, ADC/DAC in Slave Mode 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
AVDD to VMID and
VMID to AGND
50k
Ω
DAC Performance (Load = 10kΩ, 50pF)
0dBFs Full scale output voltage
1.0 x
AVDD/5
Vrms
SNR (Note 1,2)
A-weighted,
@ fs = 48kHz
100
106
dB
SNR (Note 1,2)
A-weighted
@ fs = 96kHz
106
dB
Dynamic Range (Note 2)
DNR
A-weighted, -60dB
full scale input
100
106
dB
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-94
-88
dB
DAC channel separation
110
dB
DAC analogue Volume Gain
Step Size
1
dB
DAC analogue Volume Gain
Range
1kHz Input
0 to -100
dB
Output Noise
A-weighted output
muted
-116
dB
DAC analogue Volume Mute
Attenuation
1kHz Input, 0dB gain
100
dB
1kHz 100mVpp
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
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
96
dB
Dynamic Range (note 2)
A-weighted, -60dB
full scale input
102
dB
kHz, 0dBFs
-89
dB
Total Harmonic Distortion (THD)
1kHz, -1dBFs
-94
-90
dB
ADC Channel Separation
1kHz Input
85
dB
Programmable Gain Step Size
1.0
dB
Programmable Gain Range
1kHz Input
-12 to +19
dB
Mute Attenuation
1kHz Input, 0dB gain
82
dB
1kHz 100mVpp
50
dB
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz
100mVpp
45
dB



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