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WM8281ECS/R Datasheet(PDF) 21 Page - Cirrus Logic

Part # WM8281ECS/R
Description  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Datasheet(HTML) 21 Page - Cirrus Logic

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WM8281
Rev 4.0
21
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
DAC to Speaker Output (SPKOUTLP+SPKOUTLN, SPKOUTRP+SPKOUTRN; Load = 8
, 22µH, BTL)
Maximum output power
PO
SPKVDD = 5.0V,
1% THD+N
1.4
W
SPKVDD = 4.2V,
1% THD+N
1.0
SPKVDD = 3.6V,
1% THD+N
0.7
Signal to Noise Ratio
SNR
A-weighted,
Output signal = 2.83Vrms
85
95
dB
Total Harmonic Distortion
THD
PO = 1.0W
-40
dB
Total Harmonic Distortion + Noise
THD+N
PO = 1.0W
-40
dB
Total Harmonic Distortion
THD
PO = 0.5W
-70
-59
dB
Total Harmonic Distortion + Noise
THD+N
PO = 0.5W
-69
dB
Channel separation (Left/Right)
80
dB
Output noise floor
A-weighted
51.2
177
µVRMS
PSRR (DBVDDn, LDOVDD,
CPVDD, AVDD)
PSRR
100mV (peak-peak) 217Hz
76
dB
100mV (peak-peak) 10kHz
68
PSRR (SPKVDDL, SPKVDDR)
PSRR
100mV (peak-peak) 217Hz
72
dB
100mV (peak-peak) 10kHz
55
DAC to Speaker Output (SPKOUTLP+SPKOUTLN, SPKOUTRP+SPKOUTRN; Load = 4
, 15µH, BTL)
Maximum output power
PO
SPKVDD = 5.0V,
1% THD+N
2.5
W
SPKVDD = 4.2V,
1% THD+N
1.8
SPKVDD = 3.6V,
1% THD+N
1.3
Signal to Noise Ratio
SNR
A-weighted,
Output signal = 2.83Vrms
95
dB
Total Harmonic Distortion
THD
PO = 1.0W
-70
dB
Total Harmonic Distortion + Noise
THD+N
PO = 1.0W
-69
dB
Total Harmonic Distortion
THD
PO = 0.5W
-69
dB
Total Harmonic Distortion + Noise
THD+N
PO = 0.5W
-68
dB
Channel separation (Left/Right)
80
dB
Output noise floor
A-weighted
51.2
µVRMS
PSRR (DBVDDn, LDOVDD,
CPVDD, AVDD)
PSRR
100mV (peak-peak) 217Hz
76
dB
100mV (peak-peak) 10kHz
68
PSRR (SPKVDDL, SPKVDDR)
PSRR
100mV (peak-peak) 217Hz
72
dB
100mV (peak-peak) 10kHz
55



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