WM9715L 查看數據表（PDF） - Wolfson Microelectronics plc
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WM9715L Datasheet PDF : 77 Pages
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Production Data
ELECTRICAL CHARACTERISTICS
WM9715L
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
1
set to 0dB
V rms
Signal to Noise Ratio
SNR
85
90
dB
(A-weighted)
Total Harmonic Distortion +
Noise
THD+N
-3dB output
-86
-80
dB
Power Supply Rejection
PSRR
100mV, 20Hz to 20kHz
50
dB
signal on AVDD
Speaker Output (LOUT2/ROUT2 with 8Ω bridge tied load, INV=1)
Output Power
Output Power at 1% THD
Abs. Max Output Power
PO
PO
POmax
Output power is very closely correlated with THD; see below.
400
mW
500
mW
Total Harmonic Distortion
THD
PO=150mW
-65
dB
0.05
%
Signal to Noise Ratio
SNR
90
97
dB
(A-weighted)
Headphone Output (HPOUTL/R with 16Ω or 32Ω load)
Output Power per channel
Total Harmonic Distortion
(Note 1)
PO
THD
Output power is very closely correlated with THD; see below.
PO=10mW, RL=16Ω
-80
dB
PO=10mW, RL=32Ω
-81
PO=20mW, RL=16Ω
PO=20mW, RL=32Ω
-77
-70
-79
Signal to Noise Ratio
SNR
90
95
dB
(A-weighted)
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.
w
PD Rev 4.0 December 2007
7
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