Production Data
WM8758B
Test Conditions
DCVDD=1.8V, AVDD1=AVDD2=3.0V, DBVDD=3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise
stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC to L/R Mix to Line-Out (LOUT1/ROUT1 with 10k / 50pF load, analogue volume controls set to 0dB)
Full-scale output
PGA gains set to 0dB
A-weighted
AVDD1/3.3
100
Vrms
dB
Signal to Noise Ratio (Note 5,6)
SNR
AVDD1=AVDD2=3.0V
A-weighted
96
95.5
93.5
-86
dB
dB
dB
dB
dB
dB
dB
AVDD1=AVDD2=2.5V
22Hz to 20kHz
AVDD1=AVDD2=3.0V
22Hz to 20kHz
AVDD1=AVDD2=2.5V
full-scale signal
Total Harmonic Distortion
(Note 7)
THD
AVDD1=AVDD2=3.0V
full-scale signal
-86
AVDD1=AVDD2=2.5V
full-scale signal
Total Harmonic Distortion + Noise
(Note 7)
THD+N
-84
AVDD1=AVDD2=3.0V
full-scale signal
-84
AVDD1=AVDD2=2.5V
1kHz signal
Channel Separation (Note 8)
Ground noise rejection
100
40
dB
dB
10mV, 20kHz noise on
HPCOM, HPCOM enabled
DAC to L/R Mix to Line-Out (LOUT2/ROUT2 with 10k / 50pF load, analogue volume controls set to 0dB)
Full-scale output
PGA gains set to 0dB
A-weighted
AVDD1/3.3
100
Vrms
dB
Signal to Noise Ratio (Note 5,6)
SNR
95
AVDD1=AVDD2=3.0V
A-weighted
96
95.5
93.5
-87
dB
dB
dB
dB
dB
dB
dB
AVDD1=AVDD2=2.5V
22Hz to 20kHz
AVDD1=AVDD2=3.0V
22Hz to 20kHz
AVDD1=AVDD2=2.5V
full-scale signal
Total Harmonic Distortion
(Note 7)
THD
-80
-75
AVDD1=AVDD2=3.0V
full-scale signal
-82
AVDD1=AVDD2=2.5V
full-scale signal
Total Harmonic Distortion + Noise
(Note 7)
THD+N
-85
AVDD1=AVDD2=3.0V
full-scale signal
-80
AVDD1=AVDD2=2.5V
1kHz signal
Channel Separation (Note 8)
Ground noise rejection
100
40
dB
dB
10mV, 20kHz noise on
LCOM, LCOM enabled
PD, Rev 4.4, January 2012
9
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
