WM8510 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8510 Datasheet PDF : 81 Pages
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Pre-Production
WM8510
Test Conditions
DCVDD = 1.8V, AVDD = DBVDD = 3.3V, SPKVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless
otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
MIC2 Analogue Input
Full-scale Input Signal Level
(0dB) – note this scales with
AVDD
VINFS
1.0
Vrms
0
dBV
Input Resistance
RMIC2IN
MIC2MODE=0
20
kΩ
Input Capacitance
CMIC2IN
10
pF
Digital to Analogue Converter (DAC) to MONO output (all data measured with 10kΩ / 50pF load)
Signal to Noise Ratio (Note 5)
SNR
A-weighted
90
93
dB
Total Harmonic Distortion
(Note 6)
THD
RL = 10 kΩ
full-scale signal
-84
-70
dB
0dB Full Scale output voltage
(Note 7)
MONOBOOST=0
MONOBOOST=1
AVDD/3.3
1.5x
(AVDD/3.3)
VRMS
Speaker Output PGA
Programmable Gain
-57
6
dB
Programmable Gain Step Size
Guaranteed monotonic
1
dB
BTL Speaker Output (SPKOUTP, SPKOUTN with 8Ω bridge tied load)
Output Power
PO
Output power is very closely correlated with THD; see below
Total Harmonic Distortion
THD
PO =180mW, RL = 8Ω,
0.03
%
SPKVDD=3.3V
-70
dB
PO =400mW, RL = 8Ω,
5.0
%
SPKVDD=3.3V
-26
dB
PO =360mW, RL = 8Ω,
0.02
%
SPKVDD=5V
-75
dB
PO =800mW, RL = 8Ω,
0.06
%
SPKVDD=5V
-65
dB
Signal to Noise Ratio
SNR
SPKVDD=3.3V,
90
dB
RL = 8Ω
SPKVDD=5V,
90
dB
RL = 8Ω
Power Supply Rejection Ratio
50
dB
‘Headphone’ output (SPKOUTP, SPKOUTN with resistive load to ground)
Signal to Noise Ratio
SNR
93
dB
Total Harmonic Distortion
THD
Po=20mW, RL = 16Ω,
0.02
%
SPKVDD=3.3V
-74
dB
Po=20mW, RL = 32Ω,
0.017
%
SPKVDD=3.3V
- 75
dB
Microphone Bias
Bias Voltage (MBVSEL=0)
Bias Voltage (MBVSEL=1)
VMICBIAS
VMICBIAS
0.9*AVDD
V
0.65*AVDD
V
Bias Current Source
IMICBIAS
3
mA
Output Noise Voltage
Vn
1kHz to 20kHz
15
nV/√Hz
Digital Input / Output
Input HIGH Level
VIH
0.7×DVDD
V
Input LOW Level
VIL
0.3×DVDD
V
Output HIGH Level
VOH
IOL=1mA
0.9×DVDD
V
Output LOW Level
VOL
IOH-1mA
0.1xDVDD
V
w
PD Rev 4.1 December 2006
7
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