WM8961 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8961
Wolfson Microelectronics plc
WM8961 Datasheet PDF : 116 Pages
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WM8961
Pre-Production
ELECTRICAL CHARACTERISTICS
Test Conditions
MICVDD = 2.5V, DVDD = 1.8V, CPVDD=1.8V, AVDD = 1.8V SPKVDD1 = SPKVDD2 = 5V, TA = +25oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
Analogue Inputs (LINPUT, RINPUT)
Full-scale Input Signal Level –
note this changes in proportion
to AVDD
VINFS
L/RINPUT
Single-ended
Mic PGA equivalent input noise
20Hz to 20kHz,
+24dB gain
Input resistance
L/RINPUT
+24dB PGA gain
TYP
500
-6.02
3
3.5
MAX
UNIT
mVrms
dBV
uV
kΩ
L/RINPUT
0dB PGA gain
28
kΩ
L/RINPUT
-23.25dB PGA gain
53
kΩ
Input capacitance
Cin
10
MIC Programmable Gain Amplifier (PGA)
Programmable Gain
Input from L/RINPUT
-23.25
24
Programmable Gain Step Size
Guaranteed monotonic
0.75
Mute Attenuation
85
Selectable Input Gain Boost
Gain Boost Steps
Input from PGA
0, 13, 20,
29
Analogue Inputs (LINPUT, RINPUT) to ADC out
Signal to Noise Ratio
(A-weighted)
SNR
80
88
Total Harmonic Distortion Plus
Noise
THD+N
-1dBFS input
-82
-75
Total Harmonic Distortion
THD
-1dBFS input
-86
-75
ADC Channel Separation
1kHz
97
10kHz
97
PSRR
100mV(peak-peak) 1kHz
60
applied to AVDD
PSRR
100mV(peak-peak) 20kHz
40
applied to AVDD
Channel Matching
1kHz signal
+/-0.5
DAC to HP_L, HP_R (used as Line output) with 10kΩ / 50pF load: standard headphone playback mode
Full scale output voltage
L/ROUTVOL = 0dB
1.0
Signal to Noise Ratio
(A-weighted)
SNR
87
97
Total Harmonic Distortion Plus
Noise
THD+N
10kΩ load
-78
-67
Total Harmonic Distortion
Channel Separation
THD
10kΩ load
1kHz full scale signal
-79
-68
100
10kHz full scale signal
85
PSRR (AVDD)
100mV(peak-peak) 1kHz
60
100mV(peak-peak)
58
20kHz
DC offset
DC servo is enabled
-1.5
+1.5
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Vrms
dB
dB
dB
dB
dB
dB
mV
w
PP, August 2009, Rev 3.1
8
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