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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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AS3517H-ECTP bảng dữ liệu(PDF) 20 Page - ams AG |
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AS3517H-ECTP bảng dữ liệu(HTML) 20 Page - ams AG |
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20 / 94 page  AS3517 V17 Data Sheet, Confidential © 2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Parameter Table 12 Microphone Inputs Parameter Symbol Parameter Min Typ Max Unit Note VMICIN0 40 mVPEAK AMICPRE = 28dB; AMIC = 0dB VMICIN1 20 mVPEAK AMICPRE = 34dB; AMIC = 0dB VMICIN2 Input Signal Level 10 mVPEAK AMICPRE = 40dB; AMIC = 0dB RMICIN Input Impedance 15 kΩ MICP, MICN to AGND ΔMICIN Input Impedance Tolerance ±15 % CMICIN Input Capacitance 5 pF AMICPRE Microphone Preamplifier Gain 28 34 40 dB dB dB Preamplifier has 3 selectable (fixed) gain settings AMIC Programmable Gain -40.5 +6 dB Gain Steps 1.5 dB discrete logarithmic gain steps Gain Step Precision ±0.25 dB VMICLIMIT Limiter Activation Level 1 VPEAK AMICLIMIT Limiter Gain Overdrive 15*2 dB tATTACK Limiter Attack Time 50 µs/6dB tDECAY Limiter Decay Time 120 ms/6dB AMICMUTE Mute Attenuation 100 dB VMICSUP Microphone Supply Voltage 2.9 V IMICMAX Max. Microphone Supply Current 10 mA microphones nominally need a bias current of 0.5mA-1mA VNOISE Microphone Supply Voltage Noise 5 µV IMICDET Microphone Detection Current 50 µA IREMDET Max. Remote Detection Current 500 µA BVDD = 3.3V, TA= 25oC unless otherwise mentioned Register Description Table 13 Microphone Related Register Name Base Offset Description MIC1_R 2-wire serial 06h Right Microphone Input 1 volume settings, AGC control MIC1_L 2-wire serial 07h Left Microphone Input 1 volume settings, MIC 1 supply control MIC2_R 2-wire serial 08h Right Microphone Input 2 volume settings, AGC control MIC2_L 2-wire serial 09h Left Microphone Input 2 volume settings, MIC 2 supply control AudioSet_1 2-wire serial 14h Enable/disable driver stage AudioSet_3 2-wire serial 16h Enable/disable mixer input IRQ_ENRD_1 2-wire serial 24h Interrupt settings for microphone voice activation IRQ_ENRD_3 2-wire serial 26h Interrupt settings for microphone detection IRQ_ENRD_4 2-wire serial 27h Interrupt settings for remote button press detection Microphone inputs have to be enabled in register 14h first before other settings in register 06h to 09h can be programmed. Revision 1v3 19 - 93 |
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