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WM8961GEFL/V Datasheet(PDF) 10 Page - Wolfson Microelectronics plc |
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WM8961GEFL/V Datasheet(HTML) 10 Page - Wolfson Microelectronics plc |
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10 / 116 page  WM8961 Pre-Production w PP, August 2009, Rev 3.1 10 Test Conditions MICVDD = 2.5V, DVDD = 1.8V, CPVDD=1.8V, AVDD = 1.8V SPKVDD1 = SPKVDD2 = 5V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT PO =320mW, RL = 8 Ω, SPKVDD1=SPKVDD2 =5V; AVDD=1.8V -61 0.089 -50 0.32 dB % PO =1W, RL = 8 Ω, SPKVDD1=SPKVDD2 =5V; AVDD=1.8V -58 0.13 -45 0.56 dB % Signal to Noise Ratio (A-weighted) (DAC to speaker outputs) SNR SPKVDD1=SPKVDD2 =3.3V; AVDD=1.8V; RL = 8 Ω, ref=2.0Vrms 90 dB SPKVDD1=SPKVDD2 =5V; AVDD=1.8V; RL = 8 Ω, ref=2.8Vrms 82 92 dB Speaker Supply Leakage current ISPKVDD SPKVDD1=SPKVDD2 =5V; All other supplies disconnected 1 5 uA SPKVDD1=SPKVDD2 =5V; All other supplies 0V 1 5 uA Power Supply Rejection Ratio (SPKVDD1/SPKVDD2) PSRR 100mV(peak-peak) 217Hz 75 dB 100mV(peak-peak) 1kHz 75 dB SPKL/RVOL Volume Gain -68 6 dB Volume Gain Step Size Guaranteed monotonic 1 dB Mute Attenuation 87 dB L/ROUTVOL Volume Gain -68 6 dB Volume Gain Step Size Guaranteed monotonic 1 dB Mute Attenuation 85 dB Analogue Reference Levels Mid-rail Reference Voltage VMID –3% AVDD/2 +3% V Microphone Bias Bias Voltage (Note that MBSEL=1 only allowed if MICVDD is greater than +2.40V ) VMICBIAS MICVDD=2.5V 2mA load current MBSEL=1 -10% 7/6 ×AVDD +10% V MICVDD=2.5V 2mA load current MBSEL=0 -10% 5/6 ×AVDD +10% V Power Supply Rejection Ratio PSRR 100mV ripple on MICVDD @1kHz, MBSEL=1 68 dB 100mV ripple on AVDD @1kHz, MBSEL=1 51 Bias Current Source IMICBIAS 2 mA Output Noise spectral density @1KHz Vst 1KHz, MBSEL=1 85 nV/ √Hz CHARGE PUMP Charge Pump switching frequency CPFREQ 1 MHz Flyback capacitor (between CFB1 and CFB2 pins) CFB at 2V 1 μF |
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