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LM4931ITL/NOPB Datasheet(PDF) 5 Page - Texas Instruments |
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LM4931ITL/NOPB Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 50 page  LM4931 www.ti.com SNAS251E – APRIL 2004 – REVISED MAY 2013 Electrical Characteristics DVDD = 3V, AVDD = 3V, RLHP = 32Ω, RLHF = 8Ω (1)(2) (continued) The following specifications apply for the circuit shown in Figure 62, unless otherwise specified. Limits apply for TA = 25°C. Symbol Parameter Conditions LM4931 Units (Limits) Typical(3 Limits(4) ) No Load Mode 2 7.8 19 mA (max) Mode 3 5.3 10 mA (max) Mode 4 8.6 15 mA (max) Analog Power Supply Quiescent AIDD Current Mode 5 8.4 15 mA (max) Mode 6 6.0 15 mA (max) Mode 7 9.2 15 mA (max) Mode 8, 9, 10 10.1 16 mA (max) Loudspeaker Amplifier VFS Full-Scale Output Voltage 8 Ω load, 0dB gain setting 2.6 VP-P Loudspeaker Amplifier) THD+N Total Harmonic Distortion + Noise fOUT = 1kHz, POUT = 200mW 0.4 % POLS Loudspeaker Amplifier Output Power THD = 1% (max), fOUT = 1kHz 470 350 mW (min) CB = 1.0μF Power Supply Rejection Ratio PSRR VRIPPLE = 200mVP-P 54 dB (Loudspeaker Amplifier) fRIPPLE = 217Hz SNR (Voice) Signal-to-Noise Ratio of Voice Signal = VO at 0dBFS, f = 1kHz, Channel (Loudspeaker Amplifier) Noise = digital zero, A-weighted, 0dB gain setting(6) fMCLK = 12.288MHz, PLL disabled 71 dB fMCLK = 12MHz, PLL active 70 dB Signal = VO at 0dBFS, f = 1kHz, Noise = digital zero, A-weighted, Signal-to-Noise Ratio of Music 0dB gain setting(6) SNR (Music) Channel (Loudspeaker Amplifier) Output Noise fMCLK = 12.288MHz, PLL disabled 78 dB fMCLK = 12MHz, PLL active 76 dB A-weighted filter, Vin = digital zero (7) eN (Music) Output Noise fMCLK = 12.288MHz, PLL disabled 120 μV fMCLK = 12MHz, PLL active 140 μV VOS Offset Voltage 10 mV Minimum Gain –34.5 dB Volume Control Range (Loudspeaker VCR Amplifier) Maximum Gain 12 dB SS Volume Control Step Size 1.5 dB (Loudspeaker Amplifier) Headphone Amplifier VFS Full Scale Ouput Voltage 32 Ω load, 0dB gain setting 2.6 VP-P (Headphone Amplifier) THD+N Total Harmonic Distortion + Noise fIN = 1kHz, POUT = 7.5mW, 0.04 % (Headphone Amplifier) 32 Ω stereo load POHP Output Power (Headphone Amplifier) THD = 0.5%, fOUT = 1KHz 26 19 mW (min) PSRR Power Supply Rejection Ratio CB = 1.0μF 62 dB (Headphone Amplifier) VRIPPLE = 200mVPP fRIPPLE = 217Hz (6) Disabling or bypassing the PLL will result in an improvement in noise measurements. (7) Disabling or bypassing the PLL will result in an improvement in noise measurements. Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM4931 |
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