Production Data
WM8711 / WM8711L
POWER CONSUMPTION – WM8711
OSCPD
DACPD
MODE DESCRIPTION
POWEROFF
CLKOUTPD
CURRENT CONSUMPTION
TYPICAL
AVDD
(3.3V)
0
0
1
1
3.5
3.5
17
0.4
HPVDD
(3.3V)
1.7
1.7
0.4
0.3
DCVDD
(1.5V)
1.3
1.3
0.7
0.7
DBVDD
(3.3V)
1.5
0.1
0.2
0.1
UNITS
mA
mA
µA
µA
DAC Playback, oscillator
and CLKOUT enabled
DAC Playback, using
external MCLK
Standby
Power Down
0
0
0
1
0
1
1
1
0
1
1
1
Table 1 Powerdown Mode Current Consumption Examples
Notes:
1.
2.
3.
T
A
= +25
o
C. Slave Mode, fs = 48kHz, MCLK = 256fs (12.288MHz).
All figures are quiescent, with no signal.
The power dissipation in the headphone itself not included in the above table.
ELECTRICAL CHARACTERISTICS – WM8711L
Test Conditions
AVDD, HPVDD, DBVDD = 1.8V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, T
A
= +25
o
C, Slave Mode, fs = 48kHz, MCLK = 256fs
unless otherwise stated.
PARAMETER
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Power On Reset Threshold (DCVDD)
DCVDD Threshold On -> Off
Hysteresis
DCVDD Threshold Off -> On
Analogue Reference Levels
Reference voltage (VMID)
Potential divider resistance
0dBFs Full scale output voltage
Signal to Noise Ratio
(Note 1,2)
SNR
V
VMID
R
VMID
At LINE outputs
A-weighted,
@ fs = 48kHz
A-weighted
@ fs = 96kHz
Dynamic Range (Note 2)
Total Harmonic Distortion
Power Supply Rejection Ratio
DR
THD
PSRR
A-weighted, -60dB
full scale input
1kHz, 0dBFs
1kHz, -3dBFs
1kHz 100mVpp
20Hz to 20kHz
100mVpp
85
90
90
-81
-88
50
45
dB
-75
dB
dB
85
AVDD/2
50k
1.0 x
AVDD/3.3
90
V
Ω
Vrms
dB
0.9
0.3
0.6
V
V
V
SYMBOL
V
IL
V
IH
V
OL
V
OH
I
OL
= 1mA
I
OH
= -1mA
0.9 x DBVDD
0.7 x DBVDD
0.10 x
DBVDD
TEST CONDITIONS
MIN
TYP
MAX
0.3 x DBVDD
UNIT
V
V
V
V
Digital Logic Levels (CMOS Levels)
Line Output for DAC Playback Only (Load = 10KΩ. 50pF)
Ω
w
OUTPD
0
0
1
1
PD Rev 4.3 September 2006
9
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
