WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 33

• 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
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SINGLE-ENDED INPUT
The Single-Ended PGA configuration is illustrated in Figure 23 for the Left channel. The available
gain in this mode is from -1.57dB to +28.5dB in non-linear steps. The input impedance is 12kΩ. The
input to the ADC is phase inverted with respect to the selected input pin. Different input pins can be
selected in the same mode by altering the L_IP_SEL_N field.
The equivalent configuration is also available on the Right channel; this can be selected
independently of the Left channel mode.
Figure 23 Single Ended Mode
DIFFERENTIAL LINE INPUT
The Differential Line PGA configuration is illustrated in Figure 24 for the Left channel. The available
gain in this mode is from -1.57dB to +28.5dB in non-linear steps. The input impedance is 12kΩ. The
input to the ADC is in phase with the input pin selected by L_IP_SEL_P. The input to the ADC is
phase inverted with respect to the input pin selected by L_IP_SEL_N.
As an option, common mode noise rejection can be provided in this PGA configuration, as illustrated
in Figure 24. This is enabled using the register bits defined in Table 5.
The equivalent configuration is also available on the Right channel; this can be selected
independently of the Left channel mode.
Figure 24 Differential Line Mode
PD, Rev 4.0, September 2010
WM8903
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