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LM4940 Datasheet(PDF) 4 Page - Texas Instruments |
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LM4940 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 23 page LM4940 SNAS219B – MAY 2004 – REVISED MARCH 2011 www.ti.com ELECTRICAL CHARACTERISTICS VDD = 12V (1) (2) The following specifications apply for VDD = 12V, AV = 10, RL = 4Ω, f = 1kHz unless otherwise specified. Limits apply for TA = 25°C. LM4940 Units Symbol Parameter Conditions (Limits) Typical(3) Limit(4)(5) IDD Quiescent Power Supply Current VIN = 0V, IO = 0A, No Load 16 40 mA (max) ISD Shutdown Current VSHUTDOWN = GND (6) 40 100 µA (max) 2.0 V (min) VSDIH Shutdown Voltage Input High VDD/2 V (max) VSDIL Shutdown Voltage Input Low 0.4 V (max) Single Channel THD+N = 1% 3.1 2.8 PO Output Power W (min) THD+N = 10% 4.2 VDD = 14.4V, THD+N = 10% 6.0 THD+N Total Harmomic Distortion + Noise PO = 1WRMS, AV = 10, f = 1kHz 0.15 % A-Weighted Filter, VIN = 0V, εOS Output Noise 10 µV Input Referred XTALK Channel Separation PO = 1W 70 dB VRIPPLE = 200mVp-p PSRR Power Supply Rejection Ratio 56 dB fRIPPLE = 1kHz (1) All voltages are measured with respect to the GND 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 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 AOQL (Average Outgoing Quality Level). (5) Datasheet min/max specification limits are specified by design, test, or statistical analysis. (6) Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for minimum shutdown current. TYPICAL APPLICATION Figure 2. Typical Stereo Audio Amplifier Application Circuit 4 Submit Documentation Feedback Copyright © 2004–2011, Texas Instruments Incorporated Product Folder Links: LM4940 |
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