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TSH512CFT Datasheet(PDF) 8 Page - STMicroelectronics |
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TSH512CFT Datasheet(HTML) 8 Page - STMicroelectronics |
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8 / 19 page  TSH512 8/19 Microphone Biasing Section VMIC-BIAS Microphone Biasing Voltage (see page 15) IMIC-BIAS = 2.5 mA 2.15 2.25 2.35 V ∆V MIC-BIAS VMIC-BIAS temperature coefficient Over temperature range [0, 70°C] [-40, 85°C] IMIC-BIAS = 2.5 mA 260 460 ppm/°C IMIC-BIAS MIC-BIAS current capability over VCC range [2.3V-5.5V] 2.5 mA PSRR- MIC-BIAS Power Supply Rejection Ratio of MIC-BIAS @ 1kHz and V ripple = 25mVRMS 50 dB enMIC-BIAS Equivalent input noise of MIC-BIAS VCC=2.7V VCC=5.0V 22 42 nV/ √Hz Vox Operated Switch (VOX) Section IVOX-TIMER Monostable Current Source (VOX-TIMER pin 29) Vcc = 2.7V 5µA VTH- VOX-TIMER Threshold voltage of the Monostable (Time Constant) 1.4 V VMUTE_L Low Level Output Voltage (VOX-MUTE Pin27) RL = 2 k Ω 0.2 V VMUTE_H High Level Output Voltage (VOX-MUTE Pin27) RL = 2 k Ω Vcc-0.3 V Standby VSBY_IL max Max. Low Level Input Voltage of Standby input (SBY Pin5) 0.1xVcc V VSBY_IH min Min. High Level Input Voltage of Standby input (SBY Pin5) 0.9xVcc V VCO Section VVCO-BIAS VCO-BIAS output voltage (VCO-BIAS1 pin18 or VCO-BIAS2 pin 38) With No Load 1.43 1.47 1.51 VDC IVCO-BIAS VCO-BIAS output current capability VVCO-BIAS > 1.38V 40 µA δV VCO-BIAS VCO-BIAS voltage drift 2.3V < Vcc < 5.5V [0, 70°C] Vcc=2.7V [0, 70°C] Vcc=5.0V [-40, 85°C] Vcc=2.7V [-40, 85°C] Vcc=5.0V 8 +265 +356 +265 +356 mV/V ppm/°C ppm/°C ppm/°C ppm/°C PNLO Phase Noise @ 1kHz, L = 120µH (Q=30) and RVCO no connected -80 dBc SVRVCO-BIAS Supply Voltage Rejection Ratio of VCO-BIAS With No Load 43 dB ZVCO-OUT VCO Output Impedance (VCO-OUT1 pin22 or VCO-OUT2 pin34) 400 Ω Symbol Parameter Test condition Min Typ Max Unit |
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