Datenblatt-Suchmaschine für elektronische Bauteile |
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TPA6166A2 Datenblatt(PDF) 7 Page - Texas Instruments |
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TPA6166A2 Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 49 page TPA6166A2 www.ti.com SLAS997B – MARCH 2014 – REVISED JANUARY 2015 6.7 Electrical Characteristics, Mic Preamplifier and Bias VDD = 1.8 V, MICVDD = 3.0 V, TA = 25°C (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT MICROPHONE BIAS Programmed for high value, MICVDD ≥ 2.8 V 2.45 2.6 2.75 VBIAS Microphone bias voltage V Programmed for low value 1.88 2.0 2.12 IOUT Max bias output current Internal bias resistor bypassed (MICR = 011) 1.2 mA MICR = 000 2.09 2.2 2.31 MICR = 001 2.47 2.6 2.73 RBIAS Bias output resistance k Ω MICR = 010 2.85 3.0 3.15 MICR = 011 0.13 Between SLEEVE and RING2, BW = 100 Hz to 7 kHz, 2.0 EN Bias output noise(1) 2.2 k Ω load between SLEEVE and RING2, MICR = 000, µVRMS VBIAS = 2.0 V f = dc, 92 MICVDD = 2.8 V to 3.6 V Measured between SLEEVE and f = 2 kHz, 100 mVP-P 73 RING2, 2.2 k Ω load between PSRR Power supply rejection ratio ripple, dB SLEEVE and RING2, MICVDD = 3.0 V MICR = 000, VBIAS = 2.6 V f = 2 kHz, 100 mVP-P 73 ripple, MICVDD = 2.8 V Measured between Mic and GND 1500 20000 MicZ Microphone Capsule Impedance Ω before insertion MICROPHONE PREAMPLIFIER Programmed for high value, f = 997 Hz 23 24 25 AV Preamplifier gain dB Programmed for low value, f = 997 Hz 11 12 13 EN Input referred noise(1) f = 100 Hz to 7 kHz, AV = 24 dB, Mic on SLEEVE, 2.2 kΩ 3.4 µVRMS load between SLEEVE and RING2, MICR = 000, VBIAS = 2.0 V THD+N Total harmonic distortion plus VOUT = 1 VRMS 0.095 noise % Measured between MOUTP-MOUTN, 6.04 k Ω between 74 SLEEVE and RING2, MICR = 010, VBIAS = 2.0 V, f = dc, MICVDD = 2.4 V to 3.6 V Measured between MOUTP- f = dc, 109.5 PSRR Power supply rejection ratio dB MOUTN, 2.2 k Ω between MICVDD = 2.8 V to SLEEVE and RING2, 3.6 V MICR = 000, VBIAS = 2.6 V f = 2 kHz, 100 mVP-P 78 ripple on MICVDD VCMO Output Common Mode MICVDD = 2.4 V – 3.6V 0.4×MICVDD V fC,LO Lower -3 dB frequency of HPF(2) 20 Hz fC,HI Upper -3 dB frequency of 260 kHz amplifier(2) (1) A-weighted (2) Measured with respect to gain at 997 Hz Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TPA6166A2 |
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