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TWL6040A2ZQZR Datasheet(PDF) 9 Page - Texas Instruments |
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TWL6040A2ZQZR Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 37 page  TWL6040 www.ti.com SWCS044H – NOVEMBER 2009 – REVISED JULY 2011 UPLINK MICROPHONE CHANNEL Over operating free-air temperature range (unless otherwise noted) UPLINK MICROPHONE CHANNEL PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Single-ended or differential input swing 0 dBFs (THD > 40 dB) 2 Vpp Single-ended or differential input slew rate 1 V/ µs Programmable preattenuation –6 0 dB Programmable preamplifier gain 6 30 dB Programmable preamplifier gain step size 6 dB Absolute gain accuracy Gain = Min –0.5 0.5 dB Gain = Min to Max referenced to Relative gain accuracy –0.5 0.5 dB gain = Min Gain step size accuracy Referenced to step = Typ –0.25 0.25 dB f = 20 –20 kHz, Gain variation with frequency relative to f = 1 kHz –0.5 0.5 dB without external capacitor Single-ended input resistance 160 200 240 k Ω 0 dBFs –42 –40 –10 dBFs –72 –70 Total harmonic distortion in 20 –20 kHz bandwidth –20 dBFs –67 –65 dB(A) Gain = Min, f = 1 kHz –40 dBFs –47 –45 –60 dBFs –27 –25 20 Hz to 8 kHz, gain = 6 dB 10.9 14.8 Input referred idle channel noise (including microphone bias and typical microphone biasing 20 Hz to 8 kHz, gain = 24 dB 2.5 3.3 circuitry) 20 Hz to 20 kHz, gain = 6 dB 13.6 18.6 µVrms(A) 20 Hz to 20 kHz, gain = 12 dB 6.7 9.6 20 Hz to 20 kHz, gain = 18 dB 4.1 5.6 20 Hz to 20 kHz, gain = 24 or 30 dB 3 4 Signal-to-noise ratio 20 Hz to 8 kHz, gain = 6 dB 92 98 20 Hz to 8 kHz, gain = 24 dB 86 92 dB(A) 20 Hz to 20 kHz, gain = 6 dB 90 96 20 Hz to 20 kHz, gain = 24 or 30 dB 84 90 Power supply rejection from VBAT Gain = Min VBAT > 2.3 V, f < 1 kHz 74 VBAT > 2.3 V, f < 8 kHz 56 VBAT > 2.3 V, f < 20 kHz 48 dB(A) VBAT > 2.5 V, f < 1 kHz 80 VBAT > 2.5 V, f < 8 kHz 62 VBAT > 2.5 V, f < 20 kHz 54 Antialias attenuation at Fs 6-dB gain 15 22 dB 24-dB gain 30 40 Interchannel crosstalk and separation Input at 1 kHz and –20 dBFs 60 dB Preamplifier Gain = 18 dB Input-to-output leakage Input at 1 kHz and 0 dBFs –80 –74 dB Common mode rejection 20 Hz to 20 kHz 60 45 dB Delay MicAmp input to McPDM output 4 µs Total uplink current from VBAT = 3.6 V Mono 3 4.6 mA (with analog microphone load) Stereo 5.9 7.8 Copyright © 2009–2011, Texas Instruments Incorporated 9 |
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