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TLV320AIC26 Datasheet(PDF) 4 Page - Texas Instruments |
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TLV320AIC26 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 63 page 
TLV320AIC26 SLAS412− DECEMBER 2003 www.ti.com 4 ELECTRICAL CHARACTERISTICS At +25 °C, AVDD,DRVDD,IOVDD = 3.3 V, DVDD = 1.8 V, Int. Vref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNITS BATTERY MONITOR INPUTS Input voltage range 0.5 6.0 V Input leakage current Battery conversion not selected ±1 µA AUXILIARY A/D CONVERTER Resolution Programmable: 8-, 10-,12-bits 12 Bits No missing codes 12-bit resolution 11 Bits Integral nonlinearity −5 5 LSB Offset error −6 6 LSB Gain error Calculated with effect of internal reference variation removed. −6 6 LSB Noise 53 µVrms AUDIO CODEC ADC DECIMATION FILTER Sample rate of 48 ksps Filter gain from 0 to 0.39Fs ±0.1 dB Filter gain at 0.4125Fs −0.25 dB Filter gain at 0.45Fs −3 dB Filter gain at 0.5Fs −17.5 dB Filter gain from 0.55Fs to 64Fs −75 dB Filter group delay 17/Fs sec MICROPHONE INPUT TO ADC 1 kHz sine wave input, Fs = 48 ksps Full scale input voltage (0 dB) By design, not tested in production 0.707 Vrms Input common mode By design, not tested in production 1.35 V SNR Measured as idle channel noise, 0-dB gain, A-weighted 80 92 dBA THD 0.63-Vrms input, 0-dB gain −89 −72 dB PSRR 1 kHz, 100 mVpp on AVDD.(1) 57 dB Mute attenuation Output code with 0.63-Vrms sine wave input at 1 kHz 0000H Input resistance 20 k Ω Input capacitance 10 pF MICROPHONE BIAS Voltage D4 = 0 control register 05H/Page2 2.5 V Voltage D4 = 1 control register 05H/Page2 2.0 V Sourcing current 4.7 mA (1) ADC PSRR measurement is calculated as: PSRR + 20 log 10 VSIGsup V ADCOUT |
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