lm4911qmm National Semiconductor Corporation, lm4911qmm Datasheet
lm4911qmm
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lm4911qmm Summary of contents
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... Stereo Headphone Amplifier for Automotive General Description The LM4911QMM stereo headphone amplifier provides up to 145mW per channel of output power. Intended for automotive applications AEC-Q100 grade 2 qualified and packaged in a 10–pin MSOP package. A low power mute mode features a fast turn on time of 1ms. ...
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Typical Application FIGURE 2. Typical Capacitive Coupled Output Configuration Circuit www.national.com FIGURE 3. Typical OCL Output Configuration Circuit 2 30135080 30135081 ...
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... MSOP LM4911QMMX 10–Pin MSOP MSOP Package 30135079 Top View Order Number LM4911QMM See NS Package Number MUB10A MSOP Marking Top View G - Boomer Family C9 - LM4911QMM Package Marking NSC Drawing # GC9 MUB10A GC9 MUB10A 3 30135038 Transport Media 1k units Tape and Reel 3.5k units Tape and Reel ...
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... RIPPLE P 1kHz P = 15.3mW O Change from SD low to high 20kHz, A-weighted SD, Mute T = –40C to +105C A SD, Mute T = –40C to +105C A )/ θ the number given in Absolute Maximum Ratings, whichever is lower. For the LM4911QMM, JMAX ≤ ≤ −40° MAX ≤ 16Ω ...
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External Components Description (Figure 2) Components 1. R Inverting input resistance which sets the closed-loop gain in conjunction with R I pass filter with Input coupling capacitor which blocks the DC voltage at ...
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Typical Performance Characteristics THD+N vs Frequency THD+N vs Frequency www.national.com THD+N vs Frequency 30135082 THD+N vs Frequency 30135084 6 30135083 30135085 ...
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THD+N vs Frequency 30135005 THD+N vs Frequency 30135086 THD+N vs Frequency 30135088 THD+N vs Frequency THD+N vs Frequency THD+N vs Frequency 7 30135004 30135087 30135089 www.national.com ...
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THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power www.national.com THD+N vs Output Power 30135090 THD+N vs Output Power 30135092 THD+N vs Output Power 30135008 8 30135091 30135093 30135007 ...
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THD+N vs Output Power Output Resistance vs Load Resistance Output Power vs Supply Voltage THD+N vs Output Power 30135010 Output Power vs Supply Voltage 30135013 Output Power vs Supply Voltage 30135094 9 30135009 30135012 30135095 www.national.com ...
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Output Power vs Supply Voltage Output Power vs Load Resistance Power Dissipation vs. Output Power www.national.com Output Power vs Load Resistance 30135011 Power Dissipation vs. Output Power 30135097 Power Dissipation vs Output Power 30135099 10 30135096 30135098 301350a0 ...
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Channel Separation 301350a1 Channel Separation 30135017 Channel Separation 30135018 Channel Separation Channel Separation Channel Separation 11 301350a2 30135019 30135016 www.national.com ...
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Power Supply Rejection Ratio Power Supply Rejection Ratio Power Supply Rejection Ratio www.national.com Power Supply Rejection Ratio 301350a3 Power Supply Rejection Ratio 301350a5 Power Supply Rejection Ratio 30135020 12 301350a4 301350a6 30135023 ...
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Power Supply Rejection Ratio Frequency Response vs Input Capacitor Size 30135027 Open Loop Frequency Response Power Supply Rejection Ratio 30135021 Frequency Response vs Input Capacitor Size Supply Voltage vs Supply Current 301350a7 13 30135022 30135026 30135024 www.national.com ...
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Clipping Voltage vs Supply Voltage Shutdown Hysteresis Voltage, Vdd=5V Power Derating Curve www.national.com Noise Floor 30135025 Shutdown Hysteresis Voltage, Vdd=3V 301350b1 301350b3 14 301350a8 301350b2 ...
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... Typical Performance Characteristics LM4911QMM Specific Characteristics THD+N vs Frequency = 16Ω 5V 100mW, OCL O Power Dissipation vs Output Power = 16Ω 5V ≤ THD+N 1%, OCL (Note 10) THD+N vs Output Power 5V 301350b7 301350b9 15 = 16Ω, OCL L 301350b8 www.national.com ...
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... This circuit shows the LM4911QMM with a 25-50kΩ pull-up resistor connected from the shutdown pin to V down pin of the LM4911QMM is also being driven by an open drain output of an external microcontroller on a separate sup- ply. This circuit ensures that shutdown is disabled when pow- ...
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FIGURE 4. Recommended Circuit for Different Supply Turn-On Timing FIGURE 5. Turn-On, Shutdown, and Mute Timing for Cap-Coupled Mode 17 301350b6 301350b5 www.national.com ...
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... L which aid in supply stability. This does not eliminate the need for bypassing the supply nodes of the LM4911QMM. A by- pass capacitor value in the range of 0.1µF to 1µF is recom- mended for C MICRO POWER SHUTDOWN The voltage applied to the SHUTDOWN pin controls the LM4911QMM's shutdown function ...
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... Threshold voltages and activation techniques match those given for the shutdown function as well. Mute may not appear to function when the LM4911QMM is used to drive high impedance loads. This is because the LM4911QMM relies on a typical headphone load (16-32Ω) to reduce input signal feedthrough through the input and feed- back resistors ...
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... and f = 100kHz, the resulting GBWP = 100kHz V H which is much smaller than the LM4911QMM GBWP of 10MHz. This figure displays that is a designer has a need to design an amplifier with higher differential gain, the LM4911QMM can still be used without running into bandwidth limitations. Figure 4 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted MSOP Order Number LM4911QMM NS Package Number MUB10A 21 www.national.com ...
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