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WM8961 Fiches technique(PDF) 10 Page - Wolfson Microelectronics plc

No de pièce WM8961
Description  Ultra-Low Power Stereo CODEC with 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
Download  116 Pages
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Fabricant  WOLFSON [Wolfson Microelectronics plc]
Site Internet  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8961 Fiches technique(HTML) 10 Page - Wolfson Microelectronics plc

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WM8961
Pre-Production
w
PP, August 2009, Rev 3.1
10
Test Conditions
MICVDD = 2.5V, DVDD = 1.8V, CPVDD=1.8V, AVDD = 1.8V SPKVDD1 = SPKVDD2 = 5V, TA = +25
oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PO =320mW, RL = 8
Ω,
SPKVDD1=SPKVDD2
=5V; AVDD=1.8V
-61
0.089
-50
0.32
dB
%
PO =1W, RL = 8
Ω,
SPKVDD1=SPKVDD2
=5V; AVDD=1.8V
-58
0.13
-45
0.56
dB
%
Signal to Noise Ratio
(A-weighted)
(DAC to speaker outputs)
SNR
SPKVDD1=SPKVDD2
=3.3V; AVDD=1.8V;
RL = 8
Ω, ref=2.0Vrms
90
dB
SPKVDD1=SPKVDD2
=5V; AVDD=1.8V;
RL = 8
Ω, ref=2.8Vrms
82
92
dB
Speaker Supply Leakage current
ISPKVDD
SPKVDD1=SPKVDD2
=5V;
All other supplies
disconnected
1
5
uA
SPKVDD1=SPKVDD2
=5V;
All other supplies 0V
1
5
uA
Power Supply Rejection Ratio
(SPKVDD1/SPKVDD2)
PSRR
100mV(peak-peak)
217Hz
75
dB
100mV(peak-peak) 1kHz
75
dB
SPKL/RVOL
Volume Gain
-68
6
dB
Volume Gain Step Size
Guaranteed monotonic
1
dB
Mute Attenuation
87
dB
L/ROUTVOL
Volume Gain
-68
6
dB
Volume Gain Step Size
Guaranteed monotonic
1
dB
Mute Attenuation
85
dB
Analogue Reference Levels
Mid-rail Reference Voltage
VMID
–3%
AVDD/2
+3%
V
Microphone Bias
Bias Voltage
(Note that MBSEL=1 only
allowed if MICVDD is greater
than +2.40V )
VMICBIAS
MICVDD=2.5V
2mA load current
MBSEL=1
-10%
7/6
×AVDD
+10%
V
MICVDD=2.5V
2mA load current
MBSEL=0
-10%
5/6
×AVDD
+10%
V
Power Supply Rejection Ratio
PSRR
100mV ripple on MICVDD
@1kHz, MBSEL=1
68
dB
100mV ripple on AVDD
@1kHz, MBSEL=1
51
Bias Current Source
IMICBIAS
2
mA
Output Noise spectral density
@1KHz
Vst
1KHz, MBSEL=1
85
nV/
√Hz
CHARGE PUMP
Charge Pump switching
frequency
CPFREQ
1
MHz
Flyback capacitor
(between CFB1 and CFB2 pins)
CFB
at 2V
1
μF


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