WM8731 / WM8731L
Production Data
POWER CONSUMPTION – WM8731L
MODE
CURRENT CONSUMPTION
DESCRIPTION
TYPICAL
AVDD
(1.8V)
6
HP
DC
DB
UNIT
VDD
(1.8V)
VDD
(1.5V)
VDD
(1.8V)
Record and Playback
All active, oscillator
enabled
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0.6
0.6
2.7
1.8
0.9
0.9
mA
mA
Playback Only
Oscillator enabled
Record Only
1.7
Line Record,
oscillator enabled
0
0
0
0
0
0
1
1
1
1
0
0
1
0
0
1
3.9
3.6
-
-
2.4
2.4
0.9
0.9
mA
mA
Mic Record,
oscillator enabled
Side Tone (Microphone Input to Headphone Output)
Clock stopped
0
0
1
0
0
1
1
1
1
1
1
1
0
1
1
1
1
0
1
1
0.8
1.1
8
0.6
0.6
-
-
-
-
-
mA
mA
μA
Analogue Bypass (Line-in to Line-out)
Clock stopped
Standby
0
0
1
0
1
1
1
1
1
1
1
1
Clock stopped
Power Down
Clock stopped
-
-
0.2
0.2
0.3
0.2
μA
Table 2 Powerdown Mode Current Consumption Examples
Notes:
1. AVDD, HPVDD, DBVDD = 1.8V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25oC. Slave Mode, fs = 48kHz,
XTI/MCLK = 256fs (12.288MHz).
2. All figures are quiescent, with no signal.
3. All figures are measured with the audio interface in master mode (MS = 1).
4. The power dissipation in the headphone itself is not included in the above table.
PD, Rev 4.8, April 2009
w
14
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
