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WM8971L датащи(PDF) 7 Page - Wolfson Microelectronics plc

номер детали WM8971L
подробное описание детали  Stereo CODEC for Portable Audio Applications
PDF  61 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8971L датащи(HTML) 7 Page - Wolfson Microelectronics plc

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Production Data
WM8971L
w
PD Rev 4.1 August 2005
7
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25
oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Inputs (LINPUT1, RINPUT1, MIC) to ADC
AVDD = 3.3V
1.0
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
VINFS
AVDD = 1.8V
0.545
V rms
L/RINPUT1 to ADC,
PGA gain = 0dB
22
L/RINPUT1 to ADC,
PGA gain = +30dB
1.5
L/RINPUT1 DC
measurement
16
Input Resistance
L/RINPUT1 unused
17
k
Ω
Input Capacitance
10
pF
AVDD = 3.3V
80
95
Signal to Noise Ratio
(A-weighted)
SNR
AVDD = 1.8V
90
dB
Dynamic Range
-60dBFs
90
95
dB
-1dBFs input,
AVDD = 3.3V
-82
0.008
Total Harmonic Distortion
THD
-1dBFs input,
AVDD = 1.8V
-74
0.02
dB
%
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
1kHz, full scale signal
90
Mute attenuation
MONOOUT pin
81
dB
Channel Separation
analogue in
to analogue out
85
dB
DAC to Line-Out (L/ROUT2 with 10k
Ω
Ω
Ω
Ω / 50pF load)
AVDD=3.3V
90
98
Signal to Noise Ratio
(A-weighted)
SNR
AVDD=1.8V
93
dB
AVDD=3.3V
-84
Total Harmonic Distortion
THD
AVDD=1.8V
-80
dB
Channel Separation
1kHz signal
100
dB
Headphone Output (LOUT1/ROUT1, using capacitors)
Output Power per channel
PO
Output power is very closely correlated with THD; see below.
HPVDD=1.8V, RL=32
Ω
PO=5mW
0.016
-76
HPVDD=1.8V, RL=16
Ω
PO=5mW
0.022
-73
HPVDD=3.3V, RL=32
Ω,
PO=20mW
0.013
-78
Total Harmonic Distortion
THD
HPVDD=3.3V, RL=16
Ω,
PO=20mW
0.018
-75
%
dB
HPVDD = 3.3V
92
96
Signal to Noise Ratio
(A-weighted)
SNR
HPVDD = 1.8V
96
dB



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