WM8777 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8777 Datasheet PDF : 102 Pages
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WM8777
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Test Conditions
AVDDDAC = 5V, AVDDADC=5V, DVDD = 3.3V, AGNDDAC = 0V, AGNDADC = 0, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK
= 256fs, ADC/DAC in Slave Mode unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
20Hz to 20kHz
45
dB
100mVpp
Input Resistance (AIN1 -> AIN6)
20
kΩ
Input Capacitance
10
pF
(AIN1 -> AIN6)
ADC PGA Output to Analogue Output (L/RSUMOP, CNTSOP, LFESOP, L/RSUROP, L/RAUXSOP) (Load=10k Ω, 50pF,
gain = 0dB) Bypass Mode
0dB Full scale output voltage
1.0 x
Vrms
AVDDDAC/5
SNR (Note 1)
90
104
dB
THD
1kHz, 0dB
-93
dB
1kHz, -3dB
-95
dB
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
dB
20Hz to 20kHz 100mV
45
dB
Mute Attenuation
1kHz, 0dB
100
dB
Analogue Input (AIN6) to Analogue Output (FRONTL, FRONTR) (Load=10k Ω, 50pF, gain = 0dB) Bypass Mode
0dB Full scale output voltage
1.0 x
Vrms
AVDDDAC/5
SNR (Note 1)
90
104
dB
THD
1kHz, 0dB
-93
dB
1kHz, -3dB
-95
dB
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
dB
20Hz to 20kHz 100mV
45
dB
Mute Attenuation
1kHz, 0dB
100
dB
ADC PGA to REC Output
0dB Full scale output voltage
1.0 x
Vrms
AVDDDAC/5
SNR (Note 1)
90
104
dB
THD
1kHz, 0dB
-93
dB
1kHz, -3dB
-95
dB
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
dB
20Hz to 20kHz 100mV
45
dB
Mute Attenuation
1kHz, 0dB
100
dB
L/RSUMOP to REC Output
0dB Full scale output voltage
1.0 x
Vrms
AVDDDAC/5
SNR (Note 1)
90
104
dB
THD
1kHz, 0dB
-93
dB
1kHz, -3dB
-95
dB
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
dB
20Hz to 20kHz 100mV
45
dB
Mute Attenuation
1kHz, 0dB
100
dB
Volume Controls (FRONTL, FRONTR, CNTR, LFE, SURR, SURL, AUXL, AUXR, HPHONER, HPHONEL, LFESUM)
Analogue output Volume Gain
Step Size
0.5
1
1.5
dB
Analogue output Volume Gain
Range
1kHz Input
-100
+20
dB
Analogue output Volume Mute
1kHz Input, 0dB gain
100
dB
Attenuation
Analogue Tone volume step size
1
dB
w
PP Rev 1.94 November 2004
8
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