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LM4930 数据表(PDF) 9 Page - Texas Instruments |
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LM4930 数据表(HTML) 9 Page - Texas Instruments |
9 / 40 page LM4930 www.ti.com SNAS212C – JULY 2003 – REVISED MAY 2013 Electrical Characteristics DVDD = 3.3V, AVDD = 5V, RLHP = 32Ω, RLHF = 8Ω (1) (2) (3) The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA= 25°C. LM4930 Units Parameter Test Conditions (Limits) Typ(4) Limits(5)(6) fMCLK = 12.288MHz Output Mode = "0010" Output Mode = "0011" 2 Output Mode = "0100" Output Mode = "0101" DIDD Digital Power Supply Current Output Mode = "0110" 4.4 Output Mode = "0111" Output Mode = "1000" Output Mode = "1001" 4.9 8 mA (max) Output Mode = "1010" fMCLK = 12.288MHz; No Load Output Mode = "0010" 7.0 Output Mode = "0011" 6.3 Output Mode = "0100" 8.0 Analog Power Supply Quiescent Output Mode = "0101" 8.2 AIDD Current Output Mode = "0110" 7.4 Output Mode = "0111" 8.7 Output Mode = "1000" Output Mode = "1001" 9.5 14 mA (max) Output Mode = "1010" DISD Digital Powerdown Current fMCLK = 12.288MHz 1 7 µA (max) Output Mode = "0000" Powerdown Mode AISD Analog Powerdown Current fMCLK = 12.288MHz 1 2 µA (max) Output Mode = "0000" Powerdown Mode DIST Digital Standby Current fMCLK = 12.288MHz 1.4 2 mA (max) Output Mode = "0001" Standby Mode AIST Analog Standby Current fMCLK = 12.288MHz 230 1000 µA (max) Output Mode = "0001" Standby Mode VFS_LS Full-Scale Output Voltage CLASS = 0; 0dB gain setting; 8 Ω BTL load(7) 2.5 VP-P (Mono speaker amplifier) VFS_HP Full-Scale Output Voltage 0dB gain setting; 32 Ω Stereo Load(7) 2.5 VP-P (Headphone amplifier) VMIC_BIAS Mic Bias Voltage 2.0 V THD+N Headphone Amplifier Total fIN = 1 kHz, POUT = 7.5mW; 32Ω Stereo Load 0.07 % Harmonic Motion Distortion + Noise POHP Headphone Amplifier Output Power THD+N = 0.5%, fOUT = 1kHz 27 20 mW (min) POLS Mono Speaker Amplifier Output THD+N = 1%, fOUT = 1kHz 1 W Power PSRR Power Supply Rejection Ratio CBYPASS = 1.0µF 55 45 dB (min) CDAC_REF = 1.0µF VRIPPLE = 200mVP-P @ 217Hz, MIC_P, MIC_N terminated with 10 Ω to ground (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specifies specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. (2) All voltages are measured with respect to the relevant GND pin unless otherwise specified. (3) Best operation is achieved by maintaining 3.0V ≤ AVDD ≤ 5.0 and 3.0V ≤ DVDD ≤ 3.6V. AVDD must be equal to or greater than DVDD. for proper operation. (4) Typicals are measured at 25°C and represent the parametric norm. (5) Limits are specified to Texas Instrument’s AOQL (Average Outgoing Quality Level). (6) Datasheet min/max specification limits are ensured by design, test, or statistical analysis. (7) This value represents the 0dB output level of the given amplifier for the given analog supply voltage. Gain values given in the GAINCONFIG register are relative to these full-scale values for each output amplifier. Copyright © 2003–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LM4930 |
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