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LM4949TL Arkusz danych(PDF) 6 Page - National Semiconductor (TI) |
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LM4949TL Arkusz danych(HTML) 6 Page - National Semiconductor (TI) |
6 / 40 page Electrical Characteristics V DD = 3.0V (Notes 1, 2) The following specifications apply for AV = 0dB, RL(SP) =15µH+8 Ω + 15µH, R L(HP) =32 Ω, f = 1kHz unless otherwise specified. Limits apply for T A = 25˚C. (Continued) Symbol Parameter Conditions LM4949 Units (Limits) Typical Limit (Note 6) (Notes 7, 8) Z IN Input Impedance Maximum Gain Minimum Gain 24.8 222.7 k Ω k Ω A V Gain Volume Control Minimum Gain Maximum Gain –57 18 dB dB LS Second Gain Stage Step 0 Differential Input Single-Ended Input 6 12 dB dB Step 1 Differential Input Single-Ended Input 4 10 dB dB Step 2 Differential Input Single-Ended Input 2 8 dB dB Step 3 Differential Input Single-Ended Input 0 6 dB dB HP Second Gain Stage Step 0 Step 1 Step 2 0 -6 -12 dB dB dB Mute Mute Attenuation Speaker Mode –103 dB Headphone Mode –123 dB CMRR Common Mode Rejection Ratio Speaker Mode, f = 1kHz, V IN = 200mVP-P 66.1 dB OCL Headphone Mode, f = 1kHz, V IN = 200mVP-P 70 dB PSRR Power Supply Rejection Ratio Differential Input Mode, V RIPPLE = 200mVP-P OCL HP Mode, f = 217Hz OCL HP Mode, f = 1kHz LS Mode, f = 217Hz LS Mode, f = 1kHz 78.1 75.4 74 72.9 dB dB dB dB PSRR Power Supply Rejection Ratio Single-Ended Input Mode, V RIPPLE = 200mVP-P OCL HP Mode, f = 217Hz OCL HP Mode, f = 1kHz LS Mode, f = 217Hz LS Mode, f = 70.31kHz72.8 77.5 81 69 81 dB dB dB dB PSRR Power Supply Rejection Ratio All Inputs ON, Single-Ended Input Mode, V RIPPLE = 200mVP-P OCL HP Mode, f = 217Hz OCL HP Mode, f = 1kHz LS Mode, f = 217Hz LS Mode, f = 1kHz 66.1 70.5 65.4 72.2 dB dB dB dB www.national.com 6 |
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