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WM8590 Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8590 Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 51 page  Pre-Production WM8590 w PP Rev 3.3 September 2005 7 Test Conditions AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25 oC, fs = 48kHz, MCLK = 256fs unless otherwise stated. ADCMCLK2DAC=1 Dynamic Range (note 2) DNR A-weighted, -60dB full scale input ADCMCLK2DAC=1 93 102 dB 1kHz, 0dBFs ADCMCLK2DAC=1 -90 dB Total Harmonic Distortion THD 1kHz, -3dBFs ADCMCLK2DAC=1 -95 -85 dB ADC Channel Separation 1kHz Input 85 dB Channel Level Matching 1kHz signal 0.1 dB Channel Phase Deviation 1kHz signal 0.06 Degree Programmable Gain Step Size 0.25 0.5 0.75 dB Programmable Gain Range (Analogue) 1kHz Input -21 +24 dB Programmable Gain Range (Digital) 1kHz Input -103 -21.5 dB Mute Attenuation (Note 4) 1kHz Input, 0dB gain 97 dB 1kHz 100mVpp 59 dB Power Supply Rejection Ratio PSRR 20Hz to 20kHz 100mVpp 56 dB PGA Gain = +24dB 4.5 kΩ PGA Gain = 0dB 37.4 kΩ Input Resistance PGA Gain = -21dB 69.0 kΩ Input Capacitance 1 pF Supply Current Analogue supply current AVDD = 5V 60 mA Digital supply current DVDD = 3.3V 6 mA Analogue Powerdown Current AVDD = 5V 132 µA Digital Powerdown Current DVDD = 3.3V 2.7 µA Crosstalk 1kHz signal, ADC fs = 48kHz, DAC fs = 44.1kHz 115 dB DAC to ADC 20kHz signal, ADC fs = 48kHz, DAC fs = 44.1kHz 130 dB 1kHz signal, ADC fs = 48kHz, DAC fs = 44.1kHz 131 dB ADC to DAC 20kHz signal, ADC fs = 48kHz, DAC fs = 44.1kHz 138 dB Notes: 1. Ratio of output level with 1kHz full scale input, to the output level with all zeros into the digital input, measured ‘A’ weighted. 2. All performance measurements done with 20kHz low pass filter, and where noted an A-weight filter. Failure to use such a filter will result in higher THD and lower SNR and Dynamic Range readings than are found in the Electrical Characteristics. The low pass filter removes out of band noise; although it is not audible it may affect dynamic specification values. 3. All performance measurement done using certain timings conditions (Please refer to section ‘Digital Audio Interface’). 4. A better MUTE Attenuation can be achieved if the ADC gain is set to minimum. 5. All performance measurements specified for ADC and DAC operating in isolation. |
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