STA529Q STMicroelectronics, STA529Q Datasheet - Page 6

• Manufacturer Part Number: STA529Q
• Description: IC AMP 2X100MW CLASS D 52VFQFPN
• Manufacturer: STMicroelectronics
• Series: Sound Terminal™r
• Type: Class Dr

Specifications of STA529Q

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 100mW x 2 @ 16 Ohm
• Voltage - Supply: 1.5 V ~ 1.95 V
• Features: Depop, I²C, I²S, Mute, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 52-VFQFN, 52-VFQFPN
• Ic Function: FFX Audio Codec Analogue & Digital Inputs, Class D Amplifier
• Brief Features: Up To 96dB Dynamic Range, FFX Class-D Driver
• Supply Voltage Range: 1.55V To 1.95V, 1.8V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8879

Introduction
1
6/55
Introduction
The STA529 is a digital stereo class-D audio amplifier. It includes an audio DSP, a ST
proprietary high-efficiency class-D driver and CMOS power output stage. It is intended for
high-efficiency digital-to-power-audio conversion for portable applications. The STA529 also
provides output capabilities for FFX™. In conjunction with a power device, the STA529
provides high-quality digital amplification.
The STA529 contains an on-chip volume/gain control.
The PWM amplifier achieves greater than 90% efficiency for longer battery life for portable
systems.
The innovative class-D modulation, allows the STA529 to work without external LC filters
and without a heatsink.
The STA529 I2CDIS pin disables the audio DSP functions and the I
direct conversion of the input signal into output power. This conversion is done without the
microcontroller.
The STA529 is designed for low-power operation with extremely low-current consumption in
standby mode. It is available in packages TFBGA48 and VFQFPN52. These are very thin
packages (1.2 mm thick) ideal for small portable applications.
Figure 1.
VBIAS
VCM
VLO
INR
VHI
INL
PGA
Block diagram
audio interface
Serial digital
ADC
ADC
Doc ID 13095 Rev 2
OSC
volume
Digital
PLL
PWM out I/F
modulator
FFX
Divider
2
C interface to provide a
interface
Power
Power
driver
driver
Control
STA529
OUT1A
OUT1B
OUT2A
OUT2B