LX1701_05 Datasheet, PDF (1/20 Pages) Microsemi Corporation – 2W Filterless Mono Class-D Audio Amplifier

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
VDD
PVDD
GAIN
INP
Audio
Input _INN
Gain
Decoder
+
_
VDD
De-POP
Clock
PWM
H-Bridge
& Driver
LPF
LPF
OUTP
OUTN
VSS
PVSS
LX1701
KEY FEATURES
ƒ No Output Filter Required
ƒ Low EMI Design
ƒ Low Quiescent Current: 2mA
ƒ Low Shutdown Current:1µA
ƒ Low And Wide Supply Voltage
Range: 1.8-6.0 Volt
ƒ 2W Output Power Into 4Ω Load
With THD<1%
3W Into 2Ω With THD<1%
ƒ THD+N As Low As 0.09%
ƒ Small Form Factor: 16-pin MLPQ
Package: 4mmx4mm
ƒ -40 to +85°C Operating Range
ƒ Only 1 External Component
Needed, No Input AC Coupling
Capacitor Required, Under
Certain Conditions
ƒ Built-in Clock Frequency 200KHz
ƒ Built-in Feedback Loop, Allows
High Audio Fidelity
ƒ 14dB/8dB Gain Selectable
ƒ 20/300Hz Bandwidth Selectable
ƒ Shut-down Function
ƒ Internal Thermal Shut-down
ƒ High Efficiency: 85% Through
Modulation Scheme And Class-D
Operation
ƒ Built-in De-pop Circuit, No Turn
ON/OFF “POP” Noise
APPLICATIONS/BENEFITS
ƒ PDA's
ƒ Cell Phones
ƒ Portable Audio
ƒ Laptop Computer Speaker
Amplifier
ƒ LCD TV/Desktop Monitor
Speaker Amplifier
ƒ PC Audio Multimedia Amplifier
Copyright © 2004
Rev. 1.0b, 2005-04-29
PACKAGE ORDER INFO
T_J (°C)
Bare Die
Plastic MLPQ
LQ _16-Pin
RoHS Complaint / Pb-free
-40 to 85
LX1701
LX1701CLQ
Note: Available in Tape & Reel. Append the letters “TR” to the part number.
(i.e. LX1701CLQ-TR)
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX [phone]
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