WM8971LEFL/R Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8971LEFL/R Datasheet PDF : 56 Pages
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Advanced Information
WM8971L
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
Analogue Inputs (LINPUT1, RINPUT1, MIC) to ADC
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
VINFS
AVDD = 3.3V
AVDD = 1.8V
Input Resistance
L/RINPUT1 to ADC,
PGA gain = 0dB
L/RINPUT1 to ADC,
PGA gain = +30dB
L/RINPUT1 to mixer
L/RINPUT1 unused
Input Capacitance
Signal to Noise Ratio
SNR
AVDD = 3.3V
(A-weighted)
AVDD = 1.8V
Dynamic Range
-60dBFs
Total Harmonic Distortion
THD
-1dBFs input,
AVDD = 3.3V
-1dBFs input,
AVDD = 1.8V
ADC Channel Separation
1kHz signal
Channel Matching
1kHz signal
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
Mute attenuation
1kHz, full scale signal
MONOOUT pin
Channel Separation
analogue in
to analogue out
DAC to Line-Out (L/ROUT2 with 10kΩ / 50pF load)
Signal to Noise Ratio
SNR
AVDD=3.3V
(A-weighted)
AVDD=1.8V
Total Harmonic Distortion
THD
AVDD=3.3V
AVDD=1.8V
Channel Separation
1kHz signal
MIN
TYP
1.0
0.545
12
22
1
8.2
8.7
15
10
80
95
90
90
95
-82
0.008
-74
0.02
85
0.2
AVDD/3.3
90
81
85
MAX
-77
0.014
90
98
93
-84
-80
100
UNIT
V rms
kΩ
pF
dB
dB
dB
%
dB
dB
Vrms
dB
dB
dB
dB
dB
w
AI Rev 3.0 March 2004
7
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