WM8973 Ver la hoja de datos (PDF) - Wolfson Microelectronics plc
Número de pieza
componentes Descripción
Fabricante
WM8973 Datasheet PDF : 63 Pages
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WM8973L
Production Data
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
MIN
TYP
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to ADC out
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
VINFS
AVDD = 3.3V
AVDD = 1.8V
1.0
0.545
Input Resistance
L/RINPUT1 to ADC,
22
PGA gain = 0dB
L/RINPUT1 to ADC,
1.5
PGA gain = +30dB
L/RINPUT1 unused
16
DC Measurement
MAX
UNIT
V rms
k
L/RINPUT1 unused
17
Input Capacitance
10
pF
Signal to Noise Ratio
SNR
AVDD = 3.3V
80
95
dB
(A-weighted)
AVDD = 1.8V
90
Dynamic Range
-60dBFs
90
95
dB
Total Harmonic Distortion
THD
-1dBFs input,
-82
dB
AVDD = 3.3V
0.008
%
-1dBFs input,
-74
AVDD = 1.8V
0.02
ADC Channel Separation
1kHz signal
85
dB
Channel Matching
1kHz signal
0.2
dB
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
AVDD/3.3
Vrms
Mute attenuation
1kHz, full scale signal
90
dB
MONOOUT pin
81
Channel Separation
analogue in
85
dB
to analogue out
DAC to Line-Out (L/ROUT2 with 10k / 50pF load)
Signal to Noise Ratio
SNR
AVDD=3.3V
90
98
dB
(A-weighted)
AVDD=1.8V
93
Total Harmonic Distortion
THD
AVDD=3.3V
-84
dB
AVDD=1.8V
-80
Channel Separation
1kHz signal
100
dB
Headphone Output (LOUT1/ROUT1, using capacitors)
Output Power per channel
Total Harmonic Distortion
PO
THD
Output power is very closely correlated with THD; see below.
HPVDD=1.8V, RL=32
0.016
%
PO=5mW
-76
dB
HPVDD=1.8V, RL=16
PO=5mW
0.022
-73
HPVDD=3.3V, RL=32,
PO=20mW
0.013
-78
HPVDD=3.3V, RL=16,
PO=20mW
0.018
-75
Signal to Noise Ratio
SNR
HPVDD = 3.3V
92
96
dB
(A-weighted)
HPVDD = 1.8V
96
w
PD, Rev 4.5, December 2011
8
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