WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 30

• 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

WM8903
ANALOGUE INPUT SIGNAL PATH
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The WM8903 has six analogue input pins, which may be used to support connections to multiple
microphone or line input sources. The input multiplexer on the Left and Right channels can be used
to select different configurations for each of the input sources. The analogue input paths can support
line and microphone inputs, in single-ended and differential modes. The input stage can also provide
common mode noise rejection in some configurations.
The Left and Right analogue input channels are routed to the Analogue to Digital converters (ADCs).
There is also a bypass path for each channel, enabling the signal to be routed directly to the output
mixers.
The WM8903 input signal paths and control registers are illustrated in Figure 22.
Figure 22 Block Diagram for Input Signal Path
PD, Rev 4.0, September 2010
Production Data
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