WM8352GEB/V Wolfson Microelectronics, WM8352GEB/V Datasheet - Page 329
WM8352GEB/V
Manufacturer Part Number
WM8352GEB/V
Description
Audio CODECs Audio CODEC plus pwr management
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8352GEBV.pdf
(335 pages)
Specifications of WM8352GEB/V
Number Of Adc Inputs
2
Number Of Dac Outputs
2
Conversion Rate
48 KSPS
Interface Type
Serial (2-Wire, 3-Wire, 4-Wire)
Resolution
12 bit
Operating Supply Voltage
3.7 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
BGA
Minimum Operating Temperature
- 25 C
Number Of Channels
2 ADC/2 DAC
Supply Current
260 uA
Thd Plus Noise
- 83 dB
Audio Codec Type
Stereo
No. Of Adcs
2
No. Of Dacs
2
No. Of Input Channels
8
No. Of Output Channels
6
Adc / Dac Resolution
24bit
Adcs / Dacs Signal To Noise Ratio
95dB
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Production Data
w
When selecting a suitable output inductor, the inductance value and the saturation current must be
compatible with the operating conditions of the converter.
The magnitude of the inductor current ripple is dependent on the inductor value and can be
determined by the following equation:
The inductor current is also a function of the DC-DC Converter maximum input current, which can be
determined by the following equation:
As a minimum requirement, the DC current rating should be equal to the maximum input current plus
one half of the inductor current ripple.
To be suitable for the application, the chosen inductor must have a saturation current that is higher
than the peak inductor current given by the above equation. To maximise the converter efficiency,
the inductor should also have a low DC Resistance (DCR), resulting in minimum conduction losses.
Care should also be taken to ensure that the inductor is effective at the applicable operating
temperature.
See Section 29.4.4 for recommended inductor, capacitor and FET component details.
I
L
=
V
L . F
OUT
- V
SW
IN
V
V
L
F
SW
OUT
IN
I
L
= Inductor ripple current
= Output voltage
= Input voltage
= Inductance
= Switching frequency (1MHz)
PD, March 2010, Rev 4.2
WM8352
329
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