wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 8

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

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