STA330 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STA330
STMicroelectronics
'STA330' PDF : 55 Pages View PDF
Introduction
1
Introduction
STA330
The STA330 is a digital stereo audio processor with analog and digital input. It includes an
audio DSP and FFX, a ST proprietary high-efficiency class-D driver. In conjunction with a
power device, the STA330 provides high-quality digital amplification.
The STA330 contains an on-chip volume/gain control.
The PWM amplifier achieves greater than 90% efficiency for longer battery life for portable
systems.
The STA330 I2CDIS pin disables the audio DSP functions to provide a direct conversion of
the input signal into output power (the I2C interface is disabled). This conversion is done
without the microcontroller.
The STA330 is designed for low-power operation with extremely low-current consumption in
standby mode. It is available in the package VFQFPN52, a very thin (1.2 mm thick) package
that can be used for small portable applications.
Figure 1. Block diagram
Serial digital
audio interface
VBIAS
INL
VHI
VCM
VLO
INR
PGA
ADC
ADC
Digital
volume
FFX
modulator
OSC
PWM out I/F
PLL
Divider
PWM
driver
PWM
driver
Control
interface
OUT1A
OUT1B
OUT2A
OUT2B
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