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LM4941 Folha de dados(PDF) 6 Page - Texas Instruments |
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LM4941 Folha de dados(HTML) 6 Page - Texas Instruments |
6 / 23 page LM4941, LM4941SDBD, LM4941TMBD SNAS347B – JUNE 2006 – REVISED MARCH 2007 www.ti.com Electrical Characteristics VDD = 3V (1) (2) The following specifications apply for VDD = 3V, AV = 1V/V, and 8Ω load unless otherwise specified. Limits apply for TA = 25°C. LM4941 Units Symbol Parameter Conditions Typical Limit (Limits) (3) VIN = 0V, no load 1.6 2.2 mA (max) (4) (5)I DD Quiescent Power Supply Current VIN = 0V, RL = 8Ω 1.6 mA ISD Shutdown Current VSHDN = GND 0.1 0.8 µA (max) THD+N = 1% (max); f = 1 kHz RL = 8Ω 0.43 W PO Output Power THD+N = 10% (max); f = 1 kHz RL = 8Ω 0.54 W THD+N Total Harmonic Distortion + Noise PO = 0.25W; f = 1kHz 0.05 % VRIPPLE = 200mVPP Sine PSRR Power Supply Rejection Ratio f = 217Hz (6) 95 dB f = 1kHz (6) 90 dB CMRR Common-Mode Rejection Ratio f = 217Hz, VCM = 200mVPP Sine 70 dB VOS Output Offset Voltage VIN = 0V 2 6 mV (max) VSDIH Shutdown Voltage Input High 1.4 V (min) VSDIL Shutdown Voltage Input Low 0.4 V (max) TWU Wake-up Time from Shutdown CBYPASS = 1μF 8 ms (1) All voltages are measured with respect to the ground pin, unless otherwise specified. (2) 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. (3) Typicals are measured at 25°C and represent the parametric norm. (4) Limits are guaranteed to National's AOQL (Average Outgoing Quality Level). (5) Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. (6) 10 Ω terminated input. External Components Description (Figure 1) Components Functional Description 1. CS Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing section for information concerning proper placement and selection of the supply bypass capacitor. 2. CB Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External Components, for information concerning proper placement and selection of CB. 3. Ri Inverting input resistance which sets the closed-loop gain in conjunction with RF. 4. RF External feedback resistance which sets the closed-loop gain in conjunction with Ri. 6 Submit Documentation Feedback Copyright © 2006–2007, Texas Instruments Incorporated Product Folder Links: LM4941 LM4941SDBD LM4941TMBD |
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