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TLV320DAC3120 Datasheet(PDF) 6 Page - Texas Instruments |
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TLV320DAC3120 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 113 page  TLV320DAC3120 SLAS659A – NOVEMBER 2009 – REVISED MAY 2012 www.ti.com Electrical Characteristics (continued) At 25°C, AVDD = HPVDD = IOVDD = 3.3 V, SPKVDD = 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 DAC HEADPHONE OUTPUT, AC-COUPLED LOAD = 16 Ω (SINGLE-ENDED), DRIVER GAIN = 0 dB, PARASITIC CAPACITANCE = 30 pF Full-scale output voltage Output common-mode setting = 1.65 V 0.707 Vrms (0 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 DAC DIGITAL INTERPOLATION FILTER CHARACTERISTICS See Section 5.6.1.4 for DAC interpolation filter characteristics. DAC OUTPUT TO CLASS-D SPEAKER OUTPUT; LOAD = 4 Ω (DIFFERENTIAL), 50 pF SPKVDD = 3.6 V, BTL measurement, CM = 1.8 V, DAC input = 0 dBFS, class-D gain = 6 dB, THD ≤ 2.3 –16.5 dB Output voltage Vrms SPKVDD = 3.6 V, BTL measurement, CM = 1.8 V, DAC input = –2 dBFS, class-D gain = 6 dB, THD ≤ 2.1 –20 dB SPKVDD = 3.6 V, BTL measurement, DAC input = Output, common-mode 1.8 V mute, CM = 1.8 V, class-D gain = 6 dB SPKVDD = 3.6 V, BTL measurement, class-D gain = SNR Signal-to-noise ratio 6 dB, measured as idle-channel noise, A-weighted 88 dB (with respect to full-scale output value of 2.3 Vrms) SPKVDD = 3.6 V, BTL measurement, DAC input = –6 THD Total harmonic distortion –65 dB dBFS, CM = 1.8 V, class-D gain = 6 dB Total harmonic distortion + SPKVDD = 3.6 V, BTL measurement, DAC input = –6 THD+N –63 dB noise dBFS, CM = 1.8 V, class-D gain = 6 dB SPKVDD = 3.6 V, BTL measurement, ripple on PSRR Power-supply rejection ratio –44 dB SPKVDD = 200 mVp-p at 1 kHz Mute attenuation 110 dB SPKVDD = 3.6 V, BTL measurement, CM = 1.8 V, 1 class-D gain = 18 dB, THD = 10% SPKVDD = 4.3 V, BTL measurement, CM = 1.8 V, PO Maximum output power 1.5 W class-D gain = 18 dB, THD = 10% SPKVDD = 5.5 V, BTL measurement, CM = 1.8 V, 2.5 class-D gain = 18 dB, THD = 10% (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 X log( ∆VHPL / ∆VHPVDD). 6 ELECTRICAL SPECIFICATIONS Copyright © 2009–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TLV320DAC3120 |
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