Production Data
WM9715L
ELECTRICAL CHARACTERISTICS
AUDIO OUTPUTS
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD=HPVDD=SPKVDD =3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 18-bit audio data unless
otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC to Line-Out (L/ROUT2 with 10kΩ load)
Full-scale output
AVDD = 3.3V, PGA gains
set to 0dB
1
V rms
dB
Signal to Noise Ratio
(A-weighted)
SNR
85
90
Total Harmonic Distortion +
Noise
THD+N
PSRR
-3dB output
-86
50
-80
dB
dB
Power Supply Rejection
100mV, 20Hz to 20kHz
signal on AVDD
Speaker Output (LOUT2/ROUT2 with 8Ω bridge tied load, INV=1)
Output Power
PO
PO
Output power is very closely correlated with THD; see below.
Output Power at 1% THD
Abs. Max Output Power
Total Harmonic Distortion
400
500
mW
mW
dB
POmax
THD
PO=150mW
-65
0.05
97
%
Signal to Noise Ratio
(A-weighted)
SNR
90
dB
Headphone Output (HPOUTL/R with 16Ω or 32Ω load)
Output Power per channel
Total Harmonic Distortion
(Note 1)
PO
Output power is very closely correlated with THD; see below.
THD
PO=10mW, RL=16Ω
-80
-81
-77
-79
95
dB
dB
PO=10mW, RL=32Ω
PO=20mW, RL=16Ω
PO=20mW, RL=32Ω
-70
Signal to Noise Ratio
(A-weighted)
SNR
90
Note:
1. All THD values are valid for the output power level quoted above – for example, at HPVDD=3.3V and RL=16Ω, THD is
–80dB when output power is 10mW. Higher output power is possible, but will result in deterioration in THD.
PD Rev 4.0 December 2007
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
