wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 9

• 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

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
DAC to HP_L, HP_R (used as Line output) with 10kΩ / 50pF load: SNR optimised headphone playback mode (see note 1)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion Plus
Noise
Total Harmonic Distortion
DAC to Headphone Output (HP_L, HP_R) with headphone load: standard headphone playback mode
Output Power at 1% THD+N
Total Harmonic Distortion Plus
Noise
Total Harmonic Distortion
Noise Level
DC offset
Channel Separation
DAC to Headphone Output (HP_L, HP_R) with headphone load: low power headphone playback mode
Total Harmonic Distortion Plus
Noise
Noise Level
DAC to Headphone Output (HP_L, HP_R) with headphone load: SNR optimised playback mode (see note 1)
Total Harmonic Distortion Plus
Noise
Noise Level
DAC to Speaker Outputs (DAC to SPK_LP, SPK_LN, SPK_RP, SPK_RN with stereo 8Ω bridge tied load)
Output Power at 1% THD+N
Total Harmonic Distortion Plus
Noise
SNR
THD+N
THD
THD+N
THD+N
SYMBOL
THD+N
THD+N
THD
P
P
O
O
R
R
10kHz full scale signal
R
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
P
P
1kHz full scale signal
RL=32Ω, PO=12mW
RL=16Ω, PO=22mW
RL=32Ω, PO=12mW
RL=16Ω, PO=22mW
R
DC servo is enabled
TEST CONDITIONS
R
R
L
L
=3.3V; AVDD=1.8V
=3.3V; AVDD=1.8V
R
R
L
O
O
=32Ω, P
=16Ω, P
L
=8Ω, SPKVDD=5v5
L
L
=32Ω, P
L
L
=200mW, R
=320mW, R
=32Ω, P
=16Ω, P
=32Ω, P
=16Ω, P
10kΩ load
10kΩ load
R
R
L
L
=32Ω
=16Ω
O
O
O
=12mW
=22mW
O
O
O
O
=3.5mW
=12mW
=22mW
=2mW
=2mW
L
L
= 8Ω,
= 8Ω,
-1.5
MIN
-87
-88
88
0.0089
0.0079
0.0063
0.0089
0.0079
0.011
0.011
0.012
0.014
0.011
0.063
0.025
A
0.01
1.26
TYP
-79
-81
-80
-82
-84
-97
-77
-79
-81
-82
-98
-64
-72
-78
-79
-79
-78
-97
98
26
30
90
75
= +25
o
C, 1kHz signal, fs = 48kHz,
PP, August 2009, Rev 3.1
0.032
0.032
MAX
+1.5
-70
-70
Pre-Production
UNIT
dBV
dBV
dBV
mW
mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
%
%
%
%
W
%
%
9