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WM8281ECS/R Scheda tecnica(PDF) 18 Page - Cirrus Logic

Il numero della parte WM8281ECS/R
Spiegazioni elettronici  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Produttore elettronici  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Scheda tecnica(HTML) 18 Page - Cirrus Logic

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WM8281
18
Rev 4.0
Test Conditions
DBVDD1 = DBVDD2 = DBVDD3 = CPVDD = AVDD = 1.8V,
DCVDD = 1.2V (powered from LDO1), MICVDD = 2.5V (powered from LDO2), SPKVDDL = SPKVDDR = 4.2V,
TA = +25ºC, 1kHz sinusoid signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Input Paths (INnL, INnR) to ADC (Differential Input Mode, INn_MODE = 00)
Signal to Noise Ratio
(A-weighted)
SNR
48kHz sample rate
93
100
dB
16kHz sample rate,
(wideband voice)
100
106
Total Harmonic Distortion
THD
-1dBV input
-89
-81
dB
Total Harmonic Distortion + Noise
THD+N
-1dBV input
-88
dB
Channel separation (Left/Right)
100
dB
Input-referred noise floor
A-weighted,
PGA gain = +20dB
3.2
µVRMS
Common mode rejection ratio
CMRR
PGA gain = +30dB
54
60
dB
PGA gain = 0dB
60
70
PSRR (DBVDDn, LDOVDD,
CPVDD, AVDD)
PSRR
100mV (peak-peak) 217Hz
85
dB
100mV (peak-peak) 10kHz
82
PSRR (SPKVDDL, SPKVDDR)
PSRR
100mV (peak-peak) 217Hz
>120
dB
100mV (peak-peak) 10kHz
70
Analogue Input Paths (INnLP, INnRP) to ADC (Single-Ended Input Mode, INn_MODE = 01)
Signal to Noise Ratio
(A-weighted)
SNR
48kHz sample rate
91
96
dB
16kHz sample rate,
(wideband voice)
102
Total Harmonic Distortion
THD
-7dBV input
-85
-78
dB
Total Harmonic Distortion + Noise
THD+N
-7dBV input
-84
dB
Channel separation (Left/Right)
100
dB
Input-referred noise floor
A-weighted,
PGA gain = +20dB
3.2
µVRMS
PSRR (DBVDDn, LDOVDD,
CPVDD, AVDD)
PSRR
100mV (peak-peak) 217Hz
77
dB
100mV (peak-peak) 10kHz
50
PSRR (SPKVDDL, SPKVDDR)
PSRR
100mV (peak-peak) 217Hz
90
dB
100mV (peak-peak) 10kHz
50



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