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WM8711LGEFL Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8711LGEFL Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 44 page  Production Data WM8711L w PD, Rev 4.5, August 2011 7 Test Conditions AVDD, HPVDD, DBVDD = 1.8V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25 oC, Slave Mode, fs = 48kHz, MCLK = 256fs unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Total Harmonic Distortion THD 1kHz, RL = 32 @ PO = 5mW rms 0.18 -55 % dB Power Supply Rejection Ratio PSRR 1kHz 100mVpp 50 dB 20Hz to 20kHz 100mVpp 45 Programmable Gain 1kHz -73 6 6 dB Programmable Gain Step Size 1kHz 1 dB Mute attenuation 1kHz, 0dB 80 dB TERMINOLOGY 1. Signal-to-noise ratio (dB) - SNR is a measure of the difference in level between the full scale output and the output with no signal applied. (No Auto-zero or Automute function is employed in achieving these results). 2. Dynamic range (dB) - DR is a measure of the difference between the highest and lowest portions of a signal. Normally a THD+N measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB to it. (e.g. THD+N @ -60dB= -32dB, DR= 92dB). 3. THD+N (dB) - THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal. 4. Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside audio band). 5. Channel Separation (dB) - Also known as Cross-Talk. This is a measure of the amount one channel is isolated from the other. Normally measured by sending a full scale signal down one channel and measuring the other. 6. Pass-Band Ripple - Any variation of the frequency response in the pass-band region. |
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