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