component
LM4990MMX
Public Made by Adomby adom
Texas Instruments Global Sourcing Parts, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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page.json+12−9@@ -52,49 +52,49 @@ "number": "1", "name": "SHUTDOWN", "type": "input",- "description": "Active-low shutdown control input; pulling low (same state as internally-tied GND SD MODE) enters ultra-low-power shutdown; ISD = 0.1 \u00b5A typ, 2.0 \u00b5A max."+ "description": "Active-low shutdown control input; pulling low (same state as internally-tied GND SD MODE) enters ultra-low-power shutdown; ISD = 0.1 µA typ, 2.0 µA max." }, { "number": "2", "name": "BYPASS", "type": "passive",- "description": "Half-supply voltage bypass pin; connect a 1.0 \u00b5F capacitor to GND here to set the internal mid-supply reference and minimize turn-on pop."+ "description": "Half-supply voltage bypass pin; connect a 1.0 µF capacitor to GND here to set the internal mid-supply reference and minimize turn-on pop." }, { "number": "3", "name": "+IN", "type": "input",- "description": "Non-inverting audio signal input to amplifier 1; input voltage range \u22120.3 V to VDD + 0.3 V; input impedance set by external Ri."+ "description": "Non-inverting audio signal input to amplifier 1; input voltage range −0.3 V to VDD + 0.3 V; input impedance set by external Ri." }, { "number": "4", "name": "-IN", "type": "input",- "description": "Inverting audio signal input to amplifier 1; closed-loop gain set by external Rf/Ri ratio; AVD = 2\u00d7(Rf/Ri)."+ "description": "Inverting audio signal input to amplifier 1; closed-loop gain set by external Rf/Ri ratio; AVD = 2×(Rf/Ri)." }, { "number": "5", "name": "VO1", "type": "output",- "description": "BTL output of amplifier 1 (externally gain-configurable); biased at VDD/2 quiescent; drives one end of the speaker load; 1.25 W typ into 8 \u03a9 at 5 V, 1% THD+N."+ "description": "BTL output of amplifier 1 (externally gain-configurable); biased at VDD/2 quiescent; drives one end of the speaker load; 1.25 W typ into 8 Ω at 5 V, 1% THD+N." }, { "number": "6", "name": "VDD", "type": "power_in",- "description": "Positive supply voltage; operating range 2.2 V to 5.5 V; absolute maximum 6.0 V; decouple with 10 \u00b5F bulk and local ceramic capacitor as close as possible to pin."+ "description": "Positive supply voltage; operating range 2.2 V to 5.5 V; absolute maximum 6.0 V; decouple with 10 µF bulk and local ceramic capacitor as close as possible to pin." }, { "number": "7", "name": "GND", "type": "power_in",- "description": "Ground reference for all internal circuitry; \u03b8JA = 190 \u00b0C/W for the VSSOP package; all voltages measured with respect to this pin."+ "description": "Ground reference for all internal circuitry; θJA = 190 °C/W for the VSSOP package; all voltages measured with respect to this pin." }, { "number": "8", "name": "VO2", "type": "output",- "description": "BTL output of amplifier 2 (internally fixed unity-gain inverting); 180\u00b0 out of phase with VO1; biased at VDD/2 quiescent; completes the differential bridge drive."+ "description": "BTL output of amplifier 2 (internally fixed unity-gain inverting); 180° out of phase with VO1; biased at VDD/2 quiescent; completes the differential bridge drive." } ], "provenance": {@@ -174,5 +174,8 @@ "docs/lm4990mmx-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ]+ ],+ "visibility": {+ "public": true+ } }