WM9710SEFT 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM9710SEFT Datasheet PDF : 32 Pages
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WM9710
Production Data
Test Characteristics:
AVDD = 3.3V, DVDD = 3.3V, 48kHz audio sampling, TA = 25oC, unless otherwise stated.
PARAMETER
SYMBOL
Mixer Inputs to Line-out (10kΩ load)
Maximum input voltage
Maximum output voltage
Signal to Noise Ratio
SNR
A-weighted (Note 2)
Total Harmonic Distortion +
Noise
THD+N
-1dBfs input
TEST CONDITIONS
on LINEOUT
CD inputs
Other inputs
CD and LINE inputs
PHONE input
MIN
AGND
90
82
MIC1 input
MIC2 input
PCBEEP input
Input impedance (CD inputs)
At any gain
Input impedance (other mixer
inputs)
At max gain
10
At 0db gain
50
Input impedance MIC inputs
At max gain
10
At 0db gain
55
Power Supply Rejection Ratio
PSRR
20 to 20kHz, without
supply decoupling
Headphone Buffer (pins HPOUTL, HPOUR and MONOOUT)
Maximum output voltage
Max Output Power (Note 1)
SNR (Note 2)
PO
RL = 32Ω
RL = 16Ω
A-weighted
85
Total Harmonic Distortion +
Noise
THD+N
1kHz, RL = 32Ω @ PO =
10mW rms
1kHz, RL = 32Ω@ PO =
20mW rms
1kHz, RL = 16Ω @ PO =
10mW rms
1kHz, RL = 16Ω@ PO =
20mW rms
Power Supply Rejection Ratio
PSRR
20 to 20kHz, without
supply decoupling
Clocks
Crystal clock
BITCLK frequency
SYNC frequency
TYP
0.7
0.7
92
93
-87
0.0044
-82
0.008
-82
0.008
-90
0.003
-78
0.013
15
20
100
20
100
-40
0.7
30
40
92
-80
0.01
-77
0.014
-76dB
0.016
-75dB
0.018
-40
24.576
12.288
48.0
MAX
AVDD
-77
0.014
-71
0.028
-71
0.028
-71
0.028
-67
0.045
UNIT
Vrms
Vrms
dB
dB
%
kΩ
kΩ
kΩ
kΩ
kΩ
dB
Vrms
mW
mW
dB
dB
%
dB
%
dB
%
dB
%
dB
MHz
MHz
KHz
Note:
1. Harmonic distortion on the headphone output decreases with output power – see Figure 3.
2. SNR is the ratio of 0dB signal amplitude to noise floor with no signal present (all 0s input code to DACs).
3. ADC sampling capacitance allows the user to calculate the minimum external capacitance required for a stable ADC value.
w
PD Rev 4.0 December 2003
8
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