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LM4927 데이터시트(PDF) 5 Page - Texas Instruments |
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LM4927 데이터시트(HTML) 5 Page - Texas Instruments |
5 / 20 page LM4927 www.ti.com SNAS318A – JUNE 2005 – REVISED APRIL 2006 Electrical Characteristics VDD = 3V (1) (2) The following specifications apply for VDD = 3V, AV = 1, and 8Ω load unless otherwise specified. Limits apply for TA = 25°C. LM4927 Units Symbol Parameter Conditions (Limits) Typical(3) Limit(4) IDD Quiescent Power Supply Current VIN = 0V, no load 2 4.3 mA (max) VIN = 0V, RL = 8Ω 2 4.3 ISD Shutdown Current VSHUTDOWN = GND 0.1 1 µA (max) THD = 1% (max); f = 1 kHz RL = 4Ω 0.650 RL = 8Ω 0.450 W Po Output Power THD = 10% (max); f = 1 kHz RL = 4Ω 0.800 RL = 8Ω 0.550 W THD+N Total Harmonic Distortion+Noise Po = 0.25Wrms; f = 1kHz 0.04 % Vripple = 200mV sine p-p PSRR Power Supply Rejection Ratio f = 217Hz(5) 85 dB f = 1kHz(5) 80 CMRR Common-Mode Rejection Ratio f = 217Hz, VCM = 200mVpp 60 dB VOS Output Offset VIN = 0V 4 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 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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured 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 specified to Texas Instruments' AOQL (Average Outgoing Quality Level). (5) 10 Ω terminated input. External Components Description (See 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 Internal feedback resistance which sets the closed-loop gain in conjunction with Ri. Copyright © 2005–2006, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM4927 |
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