MILPITAS, Calif., Nov. 2, 2015 /PRNewswire/ -- Integrated
Silicon Solution, Inc. (Nasdaq:ISSI), a leader in advanced memory
and analog IC solutions, continued to grow its audio amplifier
portfolio with the release of two high performance Class-D power
amplifiers. The IS31AP2111 and IS31AP2121 are the first I2S
Digital Input Class D amplifiers to address the needs of
medium-power multimedia applications such as Bluetooth speakers,
sound bars, LCD projectors, HDTVs, media docking stations and radio
equipment.
Audio designs employing the IS31AP2111 or IS31AP2121 will
benefit from an I2S (Inter-IC Sound) serial bus interface. The I2S
interface transfers audio signals in digital format to maintain
maximum audio quality when distributed between audio devices. The
I2S bus separates clock and serial data signals, resulting in
significantly lower jitter and higher noise immunity than analog
audio amplifiers.
"ISSI's new I2S input interface devices enable system designers
to deliver what consumers have come to expect from high quality
personal and home audio solutions. These devices incorporate a host
of features to enhance audio quality and reliability at a low cost
by simplifying the audio signal chain," stated Ven Shan, VP of Analog Products at ISSI. "The
new products will address medium- to high-power audio amplifier
needs in consumer, industrial and aftermarket automotive
applications."
The IS31AP2111 and IS31AP2121 are 20 Watt power amplifiers with
advanced audio processing capabilities, such as 3D surround sound,
audio mixing, 20 band equalizer, dynamic range and volume control
-- all programmable via an I2C interface. Both devices
operate in a BTL (Bridge-Tied Load) mode, which efficiently doubles
the available power to the speaker load. In BTL operation,
there is no need for a DC blocking capacitor between the amplifier
and speaker, which saves cost and space, all without power loss
even at low frequencies. In addition, the IS31AP2121 supports
2.1 mode and Parallel Bridge-Tied Load (PBTL) to efficiently
deliver even more power (40W) to a 4 ohm speaker load.
The IS31AP2111 and IS31AP2121 have advanced built-in controls
for seamless audio operation. Appropriate control signals suppress
pop sounds during initial power on/off, power up/down and mute,
while also offering a volume fade-in/fade-out design for power down
and mute functions. The 3D virtual surround sound technology
provides greater separation and depth of voice quality for stereo
signals. The devices also have built-in protection circuits
including thermal, short-circuit and under-voltage for reliable and
robust operation.
Price and Availability
The IS31AP2111 is available in a thermally enhanced 24 pin
eTSSOP type package while the IS31AP2121 is available in a
thermally enhanced 48 pin eLQFP type package. The IS31AP2111
is priced at $1.20 each and the
IS31AP2121 is priced at $1.30 each in
1,000 piece quantities.
Speaker Amplifier Devices
ISSI's audio amplifier product family includes Class-D, Class-G,
Class-K and Class-AB devices with output power levels from less
than 1W up to 40W. The audio product line offers high performance
in small packages to save board space, extend battery life and
reduce system cost. For more information on ISSI's audio amplifier
devices, visit the ISSI Analog products website at
http://www.issi.com/US/product-analog-audio-amp.shtml.
About Integrated Silicon Solution, Inc.
ISSI is a
fabless semiconductor company that designs and markets high
performance integrated circuits for the following key markets: (i)
automotive, (ii) communications, (iii) industrial, medical, and
military, and (iv) digital consumer. The Company's primary products
are high speed and low power SRAM and low, medium, and high density
DRAM. The Company also designs and markets NOR flash products and
high performance analog and mixed signal integrated circuits. ISSI
is headquartered in Silicon Valley with worldwide offices in
Taiwan, Japan, Singapore, China, Europe, Hong
Kong, India, and Korea.
Visit our web site at http://www.issi.com/
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SOURCE Integrated Silicon Solution, Inc.