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TLV320ALC31 Datasheet(PDF) 5 Page - Burr-Brown (TI) |
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TLV320ALC31 Datasheet(HTML) 5 Page - Burr-Brown (TI) |
5 / 74 page www.ti.com ELECTRICAL CHARACTERISTICS TLV320AIC31 SLAS497A – AUGUST 2006 – REVISED SEPTERMBER 2006 At 25 °C, AVDD, DRVDD, IOVDD = 3.3 V, DVDD = 1.8 V, Fs = 48-kHz, 16-bit audio data (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO ADC Input signal level (0-dB) Single-ended input 0.707 VRMS Signal-to-noise ratio, Fs = 48 kHz, 0 dB PGA gain, IN1 inputs selected and 80 92 dB A-weighted(1)(2) AC-shorted together Fs = 48 kHz, 1-kHz –60 dB full-scale input applied at Dynamic range, A-weighted(1)(2) 92 dB IN1 inputs, 0-dB PGA gain –90 -75 dB Fs = 48 kHz, 1-kHz –2dB full-scale input applied at THD Total harmonic distortion IN1 inputs, 0-dB PGA gain 0.003% 0.018% 1 kHz, 100 mVpp on AVDD, DRVDD, single-ended 46 input Power supply rejection ratio dB 1 kHz, 100 mVpp on AVDD, DRVDD, differential input 68 ADC channel separation 1 kHz, –1 dB IN2L to IN2R –87 dB ADC gain error 1 kHz input, 0 dB PGA gain 0.7 dB ADC programmable gain 1-kHz input tone, RSOURCE < 50 Ω 59.5 dB amplifier maximum gain ADC programmable gain 0.5 dB amplifier step size IN1 inputs, routed to single ADC 20 Input mix attenuation = 0 dB IN2 inputs, input mix attenuation = 0 dB 20 Input resistance k Ω IN1 inputs, 80 input mix attenuation = –12 dB IN2 inputs, 80 input mix attenuation = –12 dB Input capacitance IN1 inputs 10 pF Input level control minimum 0 dB attenuation setting Input level control maximum 12 dB attenuation setting Input level control attenuation 1.5 dB step size ADC DIGITAL DECIMATION FILTER, Fs = 48 kHz Filter gain from 0 to 0.39 Fs ±0.1 dB Filter gain at 0.4125 Fs –0.25 dB Filter gain at 0.45 Fs –3 dB Filter gain at 0.5 Fs –17.5 dB Filter gain from 0.55 Fs to 64 Fs –75 dB Filter group delay 17/Fs Sec MICROPHONE BIAS 2.0 2.25 2.5 2.75 Bias voltage Programmable settings, load = 750 Ω V AVDD- 0.2 Current sourcing 2.5 V setting 4 mA (1) Ratio of output level with 1-kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a 20-Hz to 20-kHz bandwidth using an audio analyzer. (2) All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, may affect dynamic specification values. 5 Submit Documentation Feedback |
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