WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 53

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
DIGITAL MIXING
w
The ADC and DAC data can be combined in various ways to support a range of different usage
modes.
Data from either of the two ADCs can be routed to either the left or the right channel of the digital
audio interface. In addition, data from either of the digital audio interface channels can be routed to
either the left or the right DAC. See “Digital Audio Interface” for more information on the audio
interface.
The WM8903 provides a Dynamic Range Control (DRC) feature, which can apply compression and
gain adjustment in the digital domain to the ADC signal path. This is effective in controlling signal
levels under conditions where input amplitude is unknown or varies over a wide range.
The DACs can be configured as a mono mix of the two audio channels. Digital sidetone from the
ADCs can also be selectively mixed into the DAC output path.
DIGITAL MIXING PATHS
Figure 31 shows the digital mixing paths available in the WM8903 digital core.
Figure 31 Digital Mixing Paths
PD, Rev 4.0, September 2010
WM8903
53