zxcw8100s28 ETC-unknow, zxcw8100s28 Datasheet - Page 2

• Manufacturer Part Number: zxcw8100s28
• Description: 32 Bit Stereo Direct Drive Digital Audio Amplifier
• Manufacturer: ETC-unknow

DESCRIPTION
The ZXCW8100 is part of a new generation of stereo
digital audio power amplifier devices. The device
offers a move forward to a new level of performance
not offered by another solution. The ZXCW8100
operates in direct drive mode and can be selected to be
with or without dead time.
Exceptional performance can be achieved with the
ZXCW8100 device in direct drive mode, the dynamic
range is 101dB, the noise floor sits at –125dB and when
driving 1W into 4
supports all common digital audio input formats.
Sampling frequencies up to 192kHz are fully
supported, dependant on which sampling frequency is
selected then the device can operate in single, dual or
quad speed modes. In single speed mode, then the
popular 44.1kHz sampling from audio CDs is
oversampled up to 768 times. This results in a master
clock speed of 33MHz. Digital de-emphasis is also
supported as well as mixing and muting according to
the ATAPI CD-ROM standard.
Other key features include user definable digital
control of volume, mute, bass & treble. The device also
features Zetex unique overload management system
NOVALOAD™. NOVALOAD™ can operate in several
ways to modify either volume, tone or both with user
definable attack and decay rates. There is a hard mute
available as well as a mute with digital silence,
whereby the output stage is set to the quiescent state.
ZXCW8100S28
S E M I C O N D U C T O R S
THD+N is 0.021%. The device
2
The device is controlled via a 3 wire SPI (Serial
Peripheral Interface) interface from the host system
controller.
writing an 8-bit control and 64 bit data string to internal
registers within the ZXCW8100 chip. The SPI interface
is bi-directional, allowing the configuration to be read
back as required.
Multiple devices can easily be configured together by
using the SPI enable of each ZXCW8100. This means
that in 5.1 surround sound systems, for example, three
ZXCW8100 devices can be configured together.
The device provides direct drive Pulse Width
Modulation (PWM) 2 channel stereo outputs which, via
a FET drive interface with an H-bridge output stage,
forms a full solution to Digital Power Amplification.
Reference designs are available for the solutions with
typical power levels up to 60W.
The ZXCW8100 device operates from a 3.3V supply
with an operating temperature range from -40 C to
+85 C.The device is supplied in a28pin SSOPpackage.
Device function control is achieved by
ISSUE 3 - NOVEMBER 2003