Audio CODECs VoIP Mono CODEC

WM8510GEDS/V

Manufacturer Part NumberWM8510GEDS/V
DescriptionAudio CODECs VoIP Mono CODEC
ManufacturerWolfson Microelectronics
WM8510GEDS/V datasheet
 


Specifications of WM8510GEDS/V

Operating Supply Voltage- 0.3 V to + 7 VMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTPackage / CaseSSOP-28
Minimum Operating Temperature- 25 CLead Free Status / RoHS StatusLead free / RoHS Compliant
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Production Data
SYMBOL
t
line_midrail_on
t
line_midrail_off
t
hp_midrail_on
t
hp__midrail_off
t
dacint
Table 52 Typical POR Operation (typical values, not tested)
Notes:
1.
The lineout charge time, t
time is dependent upon the value of VMID decoupling capacitor and VMID pin input resistance
and AVDD power supply rise time. The values above were measured using a 4.7 µ F capacitor.
2.
It is not advisable to allow DACDAT data input during initialisation of the DAC. If the DAC data
value is not zero at point of initialisation, then this is likely to cause a pop noise on the analogue
outputs. The same is also true if the DACDAT is removed at a non-zero value, and no mute
function has been applied to the signal beforehand.
3.
The lineout discharge time, t
capacitor and the leakage resistance path to ground. The values above were measured using a
10 µ F output capacitor.
4.
The headphone charge time, t
capacitor and VMID pin input resistance and AVDD power supply rise time. The values above
were measured using a 4.7 µ F VMID decoupling capacitor.
5.
The headphone discharge time, t
coupling capacitor and the leakage resistance path to ground. The values above were
measured using a 100 µ F capacitor.
The VMIDSEL and BIASEN bits must be set to enable analogue output midrail voltage and for
normal DAC operation.
POWER MANAGEMENT
SAVING POWER BY REDUCING OVERSAMPLING RATE
The default mode of operation of the ADC and DAC digital filters is in 64x oversampling mode. Under
the control of ADCOSR and DACOSR the oversampling rate may be doubled. 64x oversampling
results in a slight decrease in noise performance compared to 128x but lowers the power
consumption of the device.
REGISTER
ADDRESS
R10
DAC control
R14
ADC control
Table 53 ADC and DAC Oversampling Rate Selection
w
MIN
TYPICAL
MAX
UNIT
500
ms
1
s
500
ms
6
s
2/fs
n /fs
is mainly determined by the VMID pin charge time. This
line_midrail_on,
is dependent upon the value of the lineout coupling
line_midrail_off,
is dependent upon the value of VMID decoupling
hp_midrail_on,
is dependent upon the value of the headphone
hp_midrail_off,
BIT
LABEL
DEFAULT
3
DACOSR128
0
3
ADCOSR128
0
WM8510
DESCRIPTION
DAC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
ADC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
PD, Rev 4.5, September 2008
61