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LM4929 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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LM4929 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 20 page LM4929 www.ti.com SNAS293B – DECEMBER 2004 – REVISED APRIL 2013 Electrical Characteristics VDD = 2.4V (1) (2) The following specifications apply for VDD = 2.4V, RL = 16Ω, and CB = 4.7µF unless otherwise specified. Limits apply to TA = 25°C. Pin 3 connected to GND (3). Symbol Parameter Conditions LM4929 Units (Limits) Typ(4) Limit(5) IDD Quiescent Power Supply Current VIN = 0V, IO = 0A 1.5 3 mA (max) ISD Shutdown Current VSHUTDOWN = GND 0.1 2.0 µA(max) THD = 1%; f = 1kHz PO Output Power R = 16 Ω 25 mW R = 32 Ω 12 VNO Output Noise Voltage BW = 20 Hz to 20kHz, A-weighted 10 µV PSRR Power Supply Rejection Ratio VRIPPLE = 200mV sine p-p 65 dB TWU Wake Up Time from Shutdown OCL 0.5 s (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 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) Pin 3 (NC) should be connected to GND for proper part operation. (4) Typicals are measured at 25°C and represent the parametric norm. (5) Limits are specified to Texas Instruments' AOQL (Average Outgoing Quality Level). External Components Description See Figure 2 Components Functional Description 1. RI Inverting input resistance which sets the closed-loop gain in conjunction with Rf. This resistor also forms a high-pass filter with Ci at fc = 1/(2πRiCi). 2. CI Input coupling capacitor which blocks the DC voltage at the amplifier's input terminals. Also creates a high-pass filter with Ri at fc = 1/(2πRiCi). Refer to the section PROPER SELECTION OF EXTERNAL COMPONENTS for an explanation of how to determine the value of Ci. 3. Rf Feedback resistance which sets the closed-loop gain in conjunction with Ri. 4. 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. 5. 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 Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM4929 |
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