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LM4900M Datasheet(PDF) 5 Page - Texas Instruments |
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LM4900M Datasheet(HTML) 5 Page - Texas Instruments |
5 / 19 page OBSOLETE LM4900 www.ti.com SNAS121D – APRIL 2001 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS (1) (2) The following specifications apply for VDD = 2.6V, for all available packages, unless otherwise specified. Limits apply for TA = 25°C LM4900 Units Symbol Parameter Conditions Typical Limit (Limits) (3) (4) IDD Quiescent Power Supply VIN = 0V, IO = 0A (5) 2.6 4 mA (max) Current ISD Shutdown Current VPIN1 = VDD 0.1 2.0 μA (max) VOS Output Offset Voltage VIN = 0V 5 mV PO Output Power THD = 1% (max); f = 1kHz; RL = 8Ω 130 mW Total Harmonic PO = 100 mWrms; AVD = 2; RL = 8Ω; THD+N 0.4 % Distortion+Noise 20Hz ≤ f ≤ 20kHz, BW < 80kHz f = 217Hz(6) 58 PSRR Power Supply Rejection Ratio VRIPPLE = 200mV sine p-p dB f = 1KHz(6) 63 (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 normal. (4) Datasheet min/max specification limits are specified by design, test, or statistical analysis. (5) The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier. (6) 10 Ω terminated input. EXTERNAL COMPONENTS DESCRIPTION (Figure 1) 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/(2π RiCI). 2. Ci Input coupling capacitor which blocks the DC voltage at the amplifier's input terminals. Also creates a highpass filter with Ri at fc = 1/(2π RiCi). 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 PROPER SELECTION OF EXTERNAL COMPONENTS for information concerning proper placement and selection of CB. Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM4900 |
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