
LX1704
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2005
Rev. 1.1, 2006-09-12
WWW
.Microse
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i
.CO
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2W Filter less Stereo Class-D Amplifier
TM
DESCRIPTION
The LX1704 family represents a
new generation of a fully integrated
audio stereo Class-D amplifier from
Microsemi. This CMOS stereo Class-
D amplifier series is optimized for low
voltage, low power operation and
minimum system cost. The products
are ideal for use in battery powered
applications where low power consumption
is desirable such as: portable speakers,
DVDs, PMP, and other low power
systems.
The LX1704 family provides very
low quiescent current consumption
through the use of a proprietary output
modulation scheme. This technology
enables filterless operation in many
applications. The part features on board,
low
Rdson,
complementary
output
MOSFET’s that reduces the need for
external components.
The LX1704 is offered in a small
footprint, low profile, 4mm x 4mm 16-
pin MLPQ.
IMPORTANT:
For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT H I GHLIGHT
Part
PVSS1
VDD
IN1+
IN1-
OUT1+
PVDD1
OUT1-
PVSS3
OUT2-
PVDD2
OUT2+
PVSS2
IN2
-
IN2
+
VS
S
EN
LX1704
VDD
IN1+
IN1-
IN2-
IN2+
ENABLE
Speaker Out 2
PVDD
Speaker Out 1
PVDD
KEY FEATUR ES
No Output Filter Required
Low EMI Design
Low Quiescent Current: 4mA
Low Shutdown Current: 1A
Wide Supply Voltage Range:
2.5 - 5.5 Volt
2W Output Power into 4 Load
with THD<1% @ 5.0V
THD+N as Low as 0.1%
Small Form Factor...16 pin
MLP Package Only 4 x 4mm
Built-in Clock Frequency
Built-in Feedback Loop, Keep
High Audio Fidelity
Fixed 20dB Gain
Full 20 - 20kHz Audio
Bandwidth
Shut-down Function
Internal Thermal Shutdown
High Efficiency: over 85%
through Modulation Scheme
and Class-D Operation
Built-in De-Pop Circuit
APPLI C ATION S
Portable Speakers
Portable DVD
PMP / PMC
Notebook PC
PACKAGE ORDER INFO
LQ
Plastic MLPQ 4mm x 4mm
16-Pin
TA (°C)
RoHS Compliant / Pb-free
0 to 70
LX1704CLQ
Note: Available in Tape & Reel. Append the letters “TR” to the
part number. (i.e. LX1704CLQ-TR)
LL
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