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LM48511 bảng dữ liệu(PDF) 7 Page - Texas Instruments |
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LM48511 bảng dữ liệu(HTML) 7 Page - Texas Instruments |
7 / 28 page ÌLM48511 www.ti.com SNAS416H – JULY 2007 – REVISED AUGUST 2015 6.7 Electrical Characteristics VDD = 3 V The following specifications apply for VDD = 3 V, PV1 = 4.8 V (continuos mode), AV = 2V/V, R3 = 25.5 kΩ, RLS = 9.31 kΩ, RL = 8 Ω, f = 1 kHz, SS/FF = GND, unless otherwise specified. Limits apply for TA = 25°C. (1) PARAMETER TEST CONDITIONS MIN TYP(2) MAX UNIT Fixed Frequency Mode (FF) 9 mA Quiescent Power Supply IDD VIN = 0, RLOAD = ∞ Current Spread Spectrum Mode (SS) 9.5 mA ISD Shutdown Current(3) VSD_BOOST = VSD_AMP = SS = FB_SEL = GND 0.01 1 μA VIH Logic Voltage Input High 0.91 V VIL Logic Voltage Input Low 0.79 V TWU Wake-up Time CSS = 0.1μF 49 ms VOS Output Offset Voltage(4) 0.04 mV RL = 8 Ω, f = 1 kHz, FF 1 BW = 22 kHz W SS 0.84 1 THD+N = 1% RL = 8 Ω, f = 1 kHz, FF 1.3 BW = 22 kHz W SS 1.3 THD+N = 10% PO Output Power RL = 4 Ω, f = 1 kHz, FF 1.8 BW = 22 kHz W SS 1.8 THD+N = 1% RL = 4 Ω, f = 1 kHz, FF 2.2 BW = 22 kHz W SS 2.2 THD+N = 10% FF 0.02% PO = 500 mW, f = 1 kHz, RL = 8 Ω SS 0.03% Total Harmonic THD+N Distortion + Noise FF 0.04% PO = 500 mW, f = 1 kHz, RL = 4 Ω SS 0.06% f = 20Hz to 20kHz FF 35 Inputs to AC GND, No µVRMS SS 35 weighting εOS Output Noise f = 20 Hz to 20 kHz FF 25 Inputs to AC GND, A µVRMS SS 25 weighted VRIPPLE = 200 mVP-P FF 89 Sine, dB SS 89 fRIPPLE = = 217 Hz Power Supply Rejection VRIPPLE = 200 mVP-P FF 88 PSRR Ratio Sine, dB SS 88 (Input Referred) fRIPPLE = = 1 kHz VRIPPLE = 200 mVP-P FF 78 Sine, dB SS 78 fRIPPLE = = 10 kHz Common-Mode CMRR Rejection Ratio VRIPPLE = 1 VP-P, fRIPPLE = 217 Hz 71 dB (Input Referred) η Efficiency f = 1 kHz, RL = 8 Ω, PO = 1 W 75% Feedback Pin Reference VFB 1.23 V Voltage(5) (1) RL is a resistive load in series with two inductors to simulate an actual speaker load for RL = 8Ω, the load is 15μH+8Ω+15μH. For RL = 4 Ω, the load is 15 μH + 4 Ω + 15 μH. (2) 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. (3) Shutdown current is measured with components R1 and R2 removed. (4) Offset voltage is determined by: (IDD (with load) — IDD (no load)) x RL. (5) Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is unloaded). Copyright © 2007–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ÌLM48511 |
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