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TLV320AIC3111IRHBR Datasheet(PDF) 7 Page - Texas Instruments |
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TLV320AIC3111IRHBR Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 156 page  TLV320AIC3111 www.ti.com SLAS644B – JULY 2009 – REVISED OCTOBER 2009 Electrical Characteristics (continued) At 25°C; AVDD, HPVDD, IOVDD = 3.3V; SPLVDD, SPRVDD = 3.6 V; DVDD = 1.8 V; fS (audio) = 48 kHz; CODEC_CLKIN = 256 × fS; PLL = Off; VOL/MICDET pin disabled (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO ADC Microphone Input to ADC, 984-Hz Sine-Wave Input, fS = 48 kHz, AGC = OFF MIC with R1 = 20 k Ω (page 1 / register 48 and page 1 / Input signal level (0-dB) 0.707 VRMS register 49, bits D7–D6) fS = 48 kHz, 0-dB PGA gain, MIC input ac-shorted to SNR Signal-to-noise ratio ground; measured as idle-channel noise, 80 91 dB A-weighted(1) (2) fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –60-dBFS Dynamic range input applied, referenced to 0.707-Vrms input, A-weighted (1) 91 dB (2) Total harmonic distortion + fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS THD+N –85 –70 dB noise input applied, referenced to 0.707 Vrms input fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS THD Total harmonic distortion –91 dB input applied, referenced to 0.707 Vrms input Input capacitance MIC input 2 pF Microphone Bias Page 1 / register 46, bits D1–D0 = 10 2.25 2.5 2.75 Voltage output V Page 1 / register 46, bits D1–D0 = 01 2 At 4-mA load current, page 1 / register 46, 5 bits D1–D0 = 10 (MICBIAS = 2.5 V) Voltage regulation mV At 4-mA load current, page 1 / register 46, 7 bits D1–D0 = 01 (MICBIAS = 2 V) Audio ADC Digital Decimation Filter Characteristics See Section 5.5.4.4 for audio ADC decimation filter characteristics. AUDIO DAC DAC Headphone Output, AC-coupled load = 16 Ω (single-ended), driver gain = 0 dB, parasitic capacitance = 30 pF Full-scale output voltage (0 Output common-mode setting = 1.65 V 0.707 Vrms dB) SNR Signal-to-noise ratio Measured as idle-channel noise, A-weighted(1) (2) 80 95 dB THD Total harmonic distortion 0-dBFS input –85 –65 dB Total harmonic distortion + THD+N 0-dBFS input –82 –60 dB noise Mute attenuation 87 dB PSRR Power-supply rejection ratio(3) Ripple on HPVDD (3.3 V) = 200 mVp-p at 1 kHz –62 dB RL = 32 Ω, THD+N ≤ –60 dB 20 PO Maximum output power mW RL = 16 Ω, THD+N ≤ –60 dB 60 DAC Lineout (HP Driver in Lineout Mode) SNR Signal-to-noise ratio Measured as idle-channel noise, A-weighted 95 dB THD Total harmonic distortion 0-dBFS input, 0-dB gain –86 dB Total harmonic distortion + THD+N 0-dBFS input, 0-dB gain –83 dB noise (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. (3) DAC to headphone-out PSRR measurement is calculated as PSRR = 20 × log( ΔVHPL / ΔVHPVDD). Copyright © 2009, Texas Instruments Incorporated ELECTRICAL SPECIFICATIONS 7 Submit Documentation Feedback Product Folder Link(s): TLV320AIC3111 |
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