PDF LX1701 Data sheet ( Hoja de datos )

Número de pieza	LX1701
Descripción	2W Filterless Mono Class-D Audio Amplifier
Fabricantes	Microsemi Corporation
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No Preview Available ! www.DataSheet4U.com LX1701 TM ® 2W Filterless Mono Class-D Audio Amplifier PRODUCTION DATA SHEET DESCRIPTION The LX1701 family represents a The LX1701 family provides very new generation of a fully integrated low quiescent current consumption audio mono class-D amplifier from through the use of a proprietary output Microsemi. This CMOS monolithic modulation scheme. This technology class-D amplifier series is optimized enables filter-less operation in many for low voltage, low power operation applications. The part features on board, and minimum system cost. The low Rdson, complementary output products are ideal for use in battery MOSFET’s that reduces the need for powered applications where low external components. power consumption is desirable such The LX1701 is offered in a small as cell phones, PDA’s, web tablets footprint, low profile surface mountable and other low power systems. 16-pin MLPQ package. IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com PRODUCT HIGHLIGHT PVDD GAIN INP Audio Input INN Gain Decoder + _ VDD De-POP VDD PVDD Clock PWM H-Bridge & Driver LPF LPF OUTP OUTN VSS PVSS LX1701 KEY FEATURES No Output Filter Required Low EMI Design Low Quiescent Current: 2mA Low Shutdown Current:1µA Low And Wide Supply Voltage Range: 1.8-6.0 Volt 2W Output Power Into 4Ω Load With THD<1% 3W Into 2Ω With THD<1% THD+N As Low As 0.09% Small Form Factor: 16-pin MLPQ Package: 4mmx4mm -40 to +85°C Operating Range Only 1 External Component Needed, No Input AC Coupling Capacitor Required, Under Certain Conditions Built-in Clock Frequency 200KHz Built-in Feedback Loop, Allows High Audio Fidelity 14dB/8dB Gain Selectable 20/300Hz Bandwidth Selectable Shut-down Function Internal Thermal Shut-down High Efficiency: 85% Through Modulation Scheme And Class-D Operation Built-in De-pop Circuit, No Turn ON/OFF “POP” Noise APPLICATIONS/BENEFITS PDA's Cell Phones Portable Audio Laptop Computer Speaker Amplifier LCD TV/Desktop Monitor Speaker Amplifier PC Audio Multimedia Amplifier Copyright © 2004 Rev. 1.0a, 2004-07-09 PACKAGE ORDER INFO TJ (°C) -40 to 85 Bare Die Plastic MLPQ LQ 16-Pin LX1701 LX1701CLQ Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1701CLQTR) Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX 714-893-2570 Page 1 1 page TM GAIN VINP VINN VDD VSS LX1701 ® 2W Filterless Mono Class-D Audio Amplifier PRODUCTION DATA SHEET SIMPLIFIED BLOCK DIAGRAM Triangle Wave Generator Gain Decoder Dynamic pulse generator Driver Driver De-pop ground signal ground generation LPF LPF EN OUTP OUTN PVSS PVSS PVDD Figure 1 – LX1701 Simplified Block Diagram PVDD Copyright © 2004 Rev. 1.0a, 2004-07-09 Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX 714-893-2570 Page 5 5 Page LX1701 TM ® 2W Filterless Mono Class-D Audio Amplifier PRODUCTION DATA SHEET THD+N vs. Power 100 50 4 OHM,f=1KHz, 10~22KHz BPF 10 8dB, BW - 20Hz VDD=3.3V 1 % 0.1 0.01 VDD=1.8V VDD=5.0V 0.001 10m 20m 50m 100m 200m W 500m 1 23 THD+N vs. Power 100 50 2 OHM,f=1KHz, 10~22KHz BPF 10 14dB, BW - 20Hz VDD=3.3V VDD=1.8V 1 % 0.1 VDD=5.0V 0.01 0.001 10m 20m 50m 100m 200m W 500m 1 24 THD+N vs. Power 100 50 2OHM,f=1KHz, 10~22KHz BPF 10 8dB, BW - 20Hz VDD=1.8V 1 % 0.1 0.01 VDD=3.3V VDD=5.0V 0.001 10m 20m 50m 100m 200m W 500m 1 24 THD+N vs. Power 100 50 4 OHM,f=1KHz, 10~22KHz BPF 10 8dB, BW - 300Hz VDD=3.3V 1 % 0.1 0.01 VDD=1.8V VDD=5.0V 0.001 10m 20m 50m 100m 200m W 500m 1 23 100 50 2 OHM,f=1KHz, 10~22KHz BPF 10 14dB, BW - 300Hz THD+N vs. Power VDD=3.3V 1 % 0.1 0.01 VDD=1.8V VDD=5.0V 0.001 10m 20m 50m 100m 200m W 500m 1 24 THD+N vs. Power 100 T 50 2 OHM,f=1KHz, 10~22KHz BPF 10 8dB, BW - 300Hz T VDD=3.3V 1 % 0.1 VDD=1.8V VDD=5.0V 0.01 0.001 10m 20m 50m 100m 200m W 500m 1 24 Copyright © 2004 Rev. 1.0a, 2004-07-09 Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX 714-893-2570 Page 11 11 Page

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