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LM4951A Scheda tecnica(PDF) 4 Page - Texas Instruments |
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LM4951A Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 23 page LM4951A SNAS453B – AUGUST 2008 – REVISED SEPTEMBER 2008 www.ti.com Electrical Characteristics VDD = 7.5V (1) (2) The following specifications apply for VDD = 7.5V, AV-BTL = 6dB, RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C. LM4951A Units Parameter Test Conditions (Limits) Typ(3) Limit(4) IDD Quiescent Power Supply Current VIN = 0V, IO = 0A, RL = 8Ω BTL 2.5 4.5 mA (max) ISD Shutdown Current VSD = GND (5) 0.01 5 µA (max) VOS Output Offset Voltage 5 30 mV (max) VSDIH Shutdown Voltage Input High 1.2 V (min) VSDIL Shutdown Voltage Input Low 0.4 V (max) RPULLDOWN Pull-down Resistor on SD pin 75 45 k Ω (min) TWU Wake-up Time CB = 1.0µF 25 35 ms (max) TSD Shutdown time CB = 1.0µF 10 ms (max) 150 °C (min) TSD Thermal Shutdown Temperature 170 190 °C (max) THD = 1% (max); f = 1kHz PO Output Power 1.8 1.5 W (min) RL = 8Ω Mono BTL PO = 600mWRMS; f = 1kHz 0.07 0.5 % (max) AV-BTL = 6dB THD+N Total Harmonic Distortion + Noise PO = 600mWRMS; f = 1kHz 0.35 % AV-BTL = 26dB A-Weighted Filter, Ri = Rf = 20kΩ εOS Output Noise 10 µV Input Referred(6) VRIPPLE = 200mVp-p, f = 217Hz, PSRR Power Supply Rejection Ratio 66 56 dB (min) CB = 1.0μF, Input Referred (1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the s or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditionsindicate conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified. (2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not ensured. (3) Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of product characterization and are not specified. (4) Datasheet min/max specification limits are ensured by test or statistical analysis. (5) 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. (6) Noise measurements are dependent on the absolute values of the closed loop gain setting resistors (input and feedback resistors). 4 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Links: LM4951A |
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