WM8904
Pre-Production
Stereo analogue bypass to headphones - IN1L/R, IN2L/R or IN3L/R pins to HPOUTL+HPOUTR pins with 30Ω load.
Test conditions:
LIN_VOL = RIN_VOL = 00101 = +0.0 dB
MCLK = 11.2896MHz
Digital audio interface disabled
Note that the Analogue bypass configuration does not benefit from the Class W dynamic control.
Variant test conditions
AVDD
DCVDD
DBVDD
CPVDD
MICVDD
TOTAL
mW
V
mA
V
mA
V
mA
V
mA
V
mA
Quiescent
HPOUTVOL = 000000 (-57dB)
1.8
1.8
1.8
1.24
1
1
1
0.11
1.8
1.8
1.8
0.00
1.8
1.8
1.8
0.26
2.5
0.01
2.82
Po = 0.1mW/channel 1kHz sine wave
HPOUTVOL = 100000 (-25dB)
1.29
1.30
0.11
0.11
0.00
0.00
2.05
5.86
2.5
2.5
0.01
0.01
6.13
Po = 1mW/channel 1kHz sine wave
HPOUTVOL = 101010 (-15dB)
13.02
Stereo analogue bypass to Line-out - IN1L/R, IN2L/R or IN3L/R pins to LINEOUTL+LINEOUTR pins with 30Ω load.
Test conditions:
LIN_VOL = RIN_VOL = 00101 = +0.0 dB
MCLK = 11.2896MHz
Digital audio interface disabled
Note that the Analogue bypass configuration does not benefit from the Class W dynamic control.
Variant test conditions
AVDD
mA
DCVDD
mA
DBVDD
mA
CPVDD
mA
MICVDD
V mA
TOTAL
mW
V
V
V
V
Quiescent
LINEOUTVOL = 000000 (-57dB)
Quiescent
1.8 1.04
1.8 1.04
1.8 1.04
1.0 0.15
1.0 0.15
1.0 0.15
1.8 0.00
1.8 0.00
1.8 0.00
1.8 0.21
1.8 0.63
1.8 1.25
1.8 0.01 2.41
1.8 0.01 3.18
1.8 0.01 4.28
LINEOUTVOL = 101011 (-14dB)
Quiescent
LINEOUTVOL = 111001 (0dB)
Off
Note: DC servo calibration is retained in this state as long as DCVDD is supplied. This allows fast, pop suppressed start-up from the
off state.
Variant test conditions
AVDD
DCVDD
DBVDD
CPVDD
MICVDD
TOTAL
mW
V
mA
V
mA
V
mA
V
mA
V
mA
Off (default settings)
No Clocks applied
Off (default settings)
1.8
0.01
1
0.00
1.8
0.00
1.8
0.01
2.5
0.01
0.04
1.8
0.01
1
0.02
1.8
0.00
1.8
0.01
2.5
0.01
0.06
DACDAT, MCLK, BCLK, and LRCLK
applied
PP, Rev 3.3, September 2012
24
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
