WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 139

• Manufacturer Part Number: WM8351GEB/V
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8351GEB/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

Production Data
14.8 DC-DC CONVERTER OPERATION
w
14.8.1
The WM8351 provides four DC-DC switching converters. Three of these are Buck (Step-down)
converters and one is a Boost (Step-up) converter. The principal characteristics and typical usage for
each DC-DC converter are shown below.
Table 89 DC-DC Converter Characteristics
Typical Application
Converter Type
Input Voltage Range
Output Voltage Range
Load Current Rating
Switching Frequency
OVERVIEW
0.85V to 3.4V
Other system
(may be limited
by application)
components
Step-down
Up to 1A
DC-DC 1
2.0MHz
Constant-current LED
using external NFET
drivers or I/O supply
170mA @ 5V
40mA @ 20V
2.7V to 5.5V
5V to 20V
DC-DC 2
Step-up,
1.0MHz
WM8351 and other
Digital supply for
(may be limited by
0.85V to 3.4V
Up to 500mA
PD, March 2010, Rev 4.2
components
DC-DC 3 / 4
Step-down
application)
2.0MHz
WM8351
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