WM8753 Wolfson Microelectronics plc, WM8753 Datasheet - Page 11

• Manufacturer Part Number: WM8753
• Description: HI FI AND TELEPHONY DUAL CODEC
• Manufacturer: Wolfson Microelectronics plc

WM8753L
POWER CONSUMPTION
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Table 1 Power Consumption
The power consumption of the WM8753L depends on the following factors.
Supply voltages: Reducing the supply voltages also reduces supply currents, and therefore results in
significant power savings.
Operating mode: Power consumption is lower in mono modes than in stereo, as one ADC / DAC /
PGA is switched OFF. It is also reduced when the device is used for playback only (ADC off) or for
recording only (DAC off). Unused outputs should be switched off (for example, when line out is not
used, do not enable the LINE outputs).
Headphone volume: At high volume, the power dissipated in the headphone itself is greater than the
power consumption of the WM8753L. High headphone volume also increases the power consumption
of the on-chip headphone drivers.
Notes:
1.
2.
3.
4.
All active (PCM, Stereo Mic, Stereo H/P Playback)
Headphone Playback Only
Line-Out Playback Only
Line Record Only (0dB gain)
Mic Record Only (29dB gain boost, ALC active)
Standby
AVDD, HPVDD, DBVDD, DCVDD = 3.3V, TA = +25oC, fs = 48kHz
All channels are stereo.
All figures are quiescent, with no signal.
The power dissipated in the headphone itself is not included in the above table.
MODE DESCRIPTION
MIN
POWER CONSUMPTION
1.65
32
36
36
34
39
TYP
AI Rev 3.1 June 2004
Advanced Information
MAX
UNITS
mW
mW
mW
mW
mW
mW
11