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WM9001 Datasheet(PDF) 8 Page - Wolfson Microelectronics plc |
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WM9001 Datasheet(HTML) 8 Page - Wolfson Microelectronics plc |
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8 / 25 page  WM9001 Production Data w PD, March 2010, Rev 4.1 8 ELECTRICAL CHARACTERISTICS Test Conditions AVDD = 3.3V; SPKVDD = 5V, TA = +25 oC, 1kHz input signal, BSEL[2:0] = 000 unless otherwise stated. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Analogue Input Pins (LIN, LIP) Maximum Full-Scale Input Signal Level Differential Mode (INP_SEL=0): This is the maximum on each input pin; the total differential input is 2x this figure. Single-Ended Mode (INP_SEL=1): This is the maximum on LIP. Note that the maximum signal level scales in proportion to AVDD (AVDD/3.3). 1.0 0 Vrms dBV Input Resistance – Differential Mode (INP_SEL=0) Gain=0dB (BSEL[2:0]=000) 160 k Ω Gain=2.1dB (BSEL[2:0]=001) 123 k Ω Gain=2.9dB (BSEL[2:0]=010) 112 k Ω Gain=3.6dB (BSEL[2:0]=011) 103 k Ω Gain=4.5dB (BSEL[2:0]=100) 94 k Ω Gain=5.1dB (BSEL[2:0]=101) 87 k Ω Input Resistance – Single-Ended Mode (INP_SEL=1) All gain settings 20 k Ω Input Capacitance 10 pF Speaker Driver Performance SNR (A-weighted) BSEL[2:0] = 011 (1.52x) 8 Ω Bridge Tied Load Class D Mode Differential and Single-Ended Input Modes 90 97 dB THD (PO=0.5W) -92 -81 dB THD+N (PO=0.5W) -87 -79 dB THD (PO=1.0W) -83 -73 dB THD+N (PO=1.0W) -78 -68 dB SNR (A-weighted) BSEL[2:0] = 011 (1.52x) 8 Ω Bridge Tied Load Class AB Mode Differential and Single-Ended Input Modes 94 102 dB THD (PO=0.5W) -79 -70 dB THD+N (PO=0.5W) -77 -68 dB THD (PO=1.0W) -77 -70 dB THD+N (PO=1.0W) -75 -68 dB Mute Attenuation Device disabled (EN=0) 100 dB Common Mode Rejection Ratio Differential Mode 50 dB Bandwidth 0 22 kHz AVDD PSRR 100mV pk-pk ripple, 217Hz 60 dB SPKVDD PSRR 83 dB DC Offset at load 5 mV SPKVDD Leakage Current EN=0 0.3 μA AVDD Leakage Current EN=0 9 μA Reference Levels VMID Midrail Reference Voltage -3% AVDD/2 +3% V Output Common Mode Voltage (Note: BSEL[2:0]=110 and BSEL[2:0]=111 are reserved settings) BSEL[2:0] = 000 1.00 x VMID V BSEL[2:0] = 001 1.27 x VMID BSEL[2:0] = 010 1.40 x VMID BSEL[2:0] = 011 1.52 x VMID BSEL[2:0] = 100 1.67 x VMID BSEL[2:0] = 101 1.80 x VMID |
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