WM8961
Pre-Production
Stereo Playback DAC to Headphones – Standard Headphone Playback with 16Ω load.
Test conditions
48kHz sample rate
Variant test conditions
AVDD
mA
DVDD
mA
SPKVDD
CPVDD
V mA
TOTAL
mW
V
V
V
mA
Quiescent
1.8
1.8
1.8
1.79
1.79
1.82
1.8
1.8
1.8
1.56
1.57
1.57
5.0
5.0
5.0
0.002
0.002
0.002
1.86
1.8
1.775
22.46
59.8
9.39
46.5
114
Po = 2mW/channel
Po = 16mW/channel
1.8
Stereo Playback DAC to Headphones – SNR Optimised Headphone Playback with 16Ω load.
Test conditions
48kHz sample rate
Variant test conditions
AVDD
mA
DVDD
mA
SPKVDD
CPVDD
TOTAL
mW
V
V
V
mA
V
mA
1.46
22.4
59.4
Quiescent
1.8
1.8
1.8
2.1
1.8
1.8
1.8
1.72
1.73
1.73
5.0
5.0
5.0
0.002
0.002
0.002
1.8
1.8
1.8
9.52
Po = 2mW/channel
Po = 16mW/channel
2.12
2.14
47.25
114
Stereo Playback to Speaker - with 8.2Ω + 22uH load (see note 1).
Test conditions
48kHz sample rate
CLASSD_ACGAIN=111 (+12dB)
Variant test conditions
AVDD
DVDD
SPKVDD1+2
CPVDD
mA
0.004 12.65mW
TOTAL
V
mA
V
mA
V
mA
1.16
102
480
V
Quiescent
1.8
1.8
1.8
2.418
2.438
2.458
1.8
1.8
1.8
1.385
1.525
1.750
5.0
5.0
5.0
1.8
1.8
1.8
Po = 200mW/channel
Po = 1W/channel
0.004
0.004
517mW
2.4W
Note:
1. The load inductance will affect the efficiency: the Class D output is generally less efficient when driving a less inductive load.
PP, August 2009, Rev 3.1
w
13
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
