WM8731L WOLFSON [Wolfson Microelectronics plc], WM8731L Datasheet - Page 10

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WM8731L

Manufacturer Part Number
WM8731L
Description
Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet

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WM8731 / WM8731L
POWER CONSUMPTION – WM8731
Table 1 Powerdown Mode Current Consumption Examples
Notes:
1.
2.
3.
4.
w
Record and Playback
Oscillator enabled
External MCLK
Oscillator and
CLKOUT disabled,
No microphone
Playback Only
Oscillator enabled
External MCLK
Record Only
Line Record,
oscillator enabled
Line Record, using
external MCLK
Mic Record,
oscillator enabled
Mic Record, using
external MCLK
Side Tone (Microphone Input to Headphone Output)
External clock still
running
Clock stopped
Analogue Bypass (Line-in to Line-out)
External clock still
running
Clock stopped
Standby
External clock still
running
Clock stopped
Power Down
External clock still
running
Clock stopped
DESCRIPTION
T
The data presented here was measured with the audio interface in master mode whenever the internal clock oscillator
was used, and in slave mode whenever an external clock was used (i.e. MS = 1 when OSCPD = 0 and vice versa).
However, it is also possible to use the WM8731 with MS = OSCPD = 0 or MS = OSCPD = 1.
All figures are quiescent, with no signal.
The power dissipation in the headphone itself not included in the above table.
A
MODE
= +25
o
C. fs = 48kHz, XTI/MCLK = 256fs (12.288MHz).
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
0
1
0
0
0
0
0
0
0
0
1
1
1
1
0
1
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
1
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
1
0
0
1
1
1
1
AVDD
(3.3V)
13.1
13.1
12.2
3.4
3.3
9.2
9.2
8.6
8.6
1.6
1.5
2.1
2.2
0.2
0.3
16
16
CURRENT CONSUMPTION
(3.3V)
VDD
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
0.3
0.3
0.3
0.3
HP
-
-
-
-
TYPICAL
PD Rev 4.3 August 2006
(1.5V)
VDD
0.08
0.08
DC
3.0
3.2
3.2
2.1
2.3
2.6
2.6
2.7
2.6
0.3
0.3
77
77
-
-
Production Data
(3.3V)
VDD
0.07
0.07
DB
1.5
0.8
1.5
1.3
0.7
1.5
0.7
0.7
0.7
0.2
0.3
65
65
-
-
UNIT
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
µA
µA
µA
µA
10

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