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TSH512 Scheda tecnica(PDF) 8 Page - STMicroelectronics |
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TSH512 Scheda tecnica(HTML) 8 Page - STMicroelectronics |
8 / 31 page Electrical characteristics TSH512 8/31 Doc ID 8120 Rev 7 Audio LNA+ALC+PEA sections THDALC Total harmonic distortion in linear region on PEA-OUT1 pin17 or PEA-OUT2 pin 39 GLNA = 0 dB, f = 1 kHz (Vin)ALC < 25 mVrms (-30 dBu) RL = 22 kΩ tied to GND 0.05 0.15 % -40° C < Tamb < +85° C 0.25 THDAGC Total harmonic distortion in compression region (Vin)ALC = 36 mVrms (-27 dBu) (Vin)ALC= 100 mVrms (-18 dBu) RL = 22 kΩ tied to GND 1.3 3 1.7 4 % -40° C < Tamb <+85°C (Vin)ALC = 36 mVrms (-27 dBu) (Vin)ALC= 100 mVrms (-18 dBu) 2.5 5.3 ΦΜPEA Phase margin at PEA-OUT1 pin 17 or PEA-OUT2 pin 39 RL =22kΩ LNA and PEA at unity gain Vin = 40 mV 70 ° Microphone biasing section VMIC-BIAS Microphone biasing voltage (Section 5.3 on page 20) IMIC-BIAS = 2.5 mA 2.15 2.25 2.35 V -40° C < Tamb < +85° C 2.14 2.36 ΔVMIC-BIAS VMIC-BIAS temperature coefficient Over temp. 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 [2.3 V–5.5 V] 2.5 mA PSRRMIC-BIAS Power supply rejection ratio of MIC-BIAS At 1 kHz and Vripple = 25 mVRMS 50 dB enMIC-BIAS Equivalent input noise of MIC-BIAS VCC =2.7 V VCC =5.0 V 22 42 nV/ √Hz Vox operated switch (VOX) section IVOX-TIMER Monostable current source (VOX-TIMER pin 29) VCC = 2.7V 5 µA VTHVOX-TIMER Threshold voltage of the Monostable (time constant) 1.4 V VMUTE_L Low level output voltage (VOX-MUTE pin 27) RL = 2 kΩ 0.2 V -40° C < Tamb <+85°C 0.2 VMUTE_H High level output voltage (VOX-MUTE pin 27) RL = 2 kΩ VCC-0.3 V -40° C < Tamb <+85°C VCC- 0.32 Table 4. Electrical characteristics for VCC = 2.7 V, Tamb = 25° C, faudio = 1 kHz, fcarrier = 2.8 MHz (unless otherwise specified) (continued) (1) Symbol Parameter Test conditions Min. Typ. Max. Unit |
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