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WM9090ECS/R データシート(PDF) 8 Page - Wolfson Microelectronics plc |
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WM9090ECS/R データシート(HTML) 8 Page - Wolfson Microelectronics plc |
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8 / 81 page  WM9090 Production Data w PD, November 2010, Rev 4.1 8 Test Conditions SPKVDD = 3.6V, AVDD=1.8V, GND=0V, TA = +25 oC, 1kHz signal, PGA gain = 0dB unless otherwise stated PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Speaker Driver Class D Audio Performance (RL=8 Ω + 10μH BTL) SNR (A-weighted) Speaker Boost = 6dB, 82 92 dB THD (PO=500mW) Speaker Boost = 6dB -75 dB THD+N (PO=500mW) Speaker Boost = 6dB -73 dB PSRR AVDD with 100mVpk-pk at 217Hz (Note 1) 75 dB SPKVDD with 100mVpk-pk at 217Hz 70 dB DC Offset at Load 5 mV Efficiency Speaker Boost = 6dB, 0dBFS input 80 89 % Output Power SPKVDD=5.0V, THD+N ≤ 1%, Speaker Boost = 12dB 1300 mW SPKVDD=4.2V, THD+N ≤ 1%, Speaker Boost = 12dB 950 mW SPKVDD=3.7V, THD+N ≤ 1%, Speaker Boost = 12dB 750 mW Quiescent Current 3 mA Leakage Currents SVDD Leakage Current 0.2 μA HPVDD Leakage Current VMID_ENA = 0, VMID_BUF_ENA = 0, and TSHUT_ENA = 0 1 μA Analogue Reference Level VMID Midrail Reference Voltage -3% AVDD/2 +3% V Charge Pump Start-up Time 500 μs Supply Voltage 1.71 2.0 V CPVOUTP Normal mode AVDD V Low power mode AVDD/2 CPVOUTN Normal mode -AVDD V Low power mode -AVDD/2 Flyback Capacitor (between CPCA and CPCB) at 2V 1 2.2 μF CPVOUTP Capacitor at 2V 2 2.2 μF CPVOUTN Capacitor at 2V 2 2.2 μF Digital Input / Output Input HIGH Level 0.7 × AVDD V Input LOW Level 0.3 × AVDD V Output HIGH Level IOL = 1mA 0.7 × AVDD V Output LOW Level IOH = -1mA 0.3 × AVDD V Input capacitance 10 pF Input leakage -0.9 0.9 uA Start-Up Time Start up time Speaker and Headphone -35 ms Note 1: Total system PSRR with external DC-DC or LDO will be higher |
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