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LM4947TLEVAL Arkusz danych(PDF) 6 Page - Texas Instruments |
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LM4947TLEVAL Arkusz danych(HTML) 6 Page - Texas Instruments |
6 / 37 page LM4947, LM4947TLEVAL SNAS349D – JUNE 2006 – REVISED MAY 2013 www.ti.com ELECTRICAL CHARACTERISTICS 3.3V (1)(2) (continued) The following specifications apply for VDD = 3.3V, TA = 25°C, and all gains are set for 0dB unless otherwise specified. Symbol Parameter Conditions LM4947 Units (Limits) Typical(3) Limits(4) A-weighted, 0dB inputs terminated, output referred Speaker; Mode 1 39 μV Speaker; Mode 3 39 μV Speaker; Mode 5 42 μV Speaker; Mode 7 38 μV NOUT Output Noise Headphone; SE, Mode 2 15 μV Headphone; SE, Mode 4 15 μV Headphone; SE, Mode 6 17 μV Headphone; OCL, Mode 2 12 μV Headphone; OCL, Mode 4 15 μV Headphone; OCL, Mode 6 17 μV VRIPPLE = 200mVPP; f = 217Hz, RL = 8Ω, CB = 2.2µF, BTL All audio inputs terminated to GND; output referred Power Supply Rejection Ratio BTL, Output Mode 1 79 dB Loudspeaker out BTL, Output Mode 3 78 dB BTL, Output Mode 5 79 dB BTL, Output Mode 7 80 dB VRIPPLE = 200mVPP; f = 217Hz, PSRR RL = 32Ω, CB = 2.2µF, BTL All audio inputs terminated to GND; output referred SE, Output Mode 2 78 dB Power Supply Rejection Ratio SE, Output Mode 4 71 dB ROUT and LOUT SE, Output Mode 6 71 dB OCL, Output Mode 2 83 dB OCL, Output Mode 4 74 dB OCL, Output Mode 6 74 dB η Class D Efficiency Output Mode 1, 3, 5 86 % f = 217Hz, VCM = 1Vpp, CMRR Common-Mode-Rejection Ratio –49 dB Mode 1, BTL, RL = 8Ω Headphone, PO = 12mW, –58 dB f = 1kHz, OCL, Mode 4, RL = 32Ω XTALK Crosstalk Headphone, PO = 12mW, –73 dB f = 1kHz, SE, Mode 4, RL = 32Ω CB = 2.2µF, OCL, RL = 32Ω 90 ms TWU Wake-Up Time from Shutdown CB = 2.2µF, SE, RL = 32Ω 115 ms Volume Control Step Size Error ±0.2 dB –60.25 dB (min) Input referred maximum attenuation -59.5 –58.75 dB (max) Digital Volume Range 17.25 dB (min) Input referred maximum gain +18 18.75 dB (max) Mute Attenuation Output Mode 1, 3, 5 87 dB (min) 8 k Ω (min) Maximum gain setting 12 14 k Ω (max) MONO_IN Input Impedance RIN and LIN Input Impedance 75 k Ω (min) Maximum attenuation setting 100 125 k Ω (max) 6 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4947 LM4947TLEVAL |
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