STA529
2 x 100 mW class-D amplifer with analog or digital input, 2.0 multichannel digital audio processor with FFX-
Active
The STA529 is a digital stereo class-D audio amplifier. It includes an audio DSP, an 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 I2C interface provides a 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.
Download
Datasheet
Key Features
- Up to 96 dB dynamic range
- Sample rates from 8 kHz to 192 kHz
- FFX™class-D driver
- 1.55 V to 1.95 V digital power supply
- 1.80 V to 3.60 V analog and I/O power supply
- 18-bit audio processing and class-D FFX™modulator
- >90-dB SNR analog-to-digital converter
- Digital volume control:
+36 dB to -105 dB in 0.5-dB steps Software volume update - 16-bit ADC
- Individual channel and master gain/attenuation
- Automatic invalid input detect mute
- 2-channel I2S input/output data interface
- Digitally controlled pop-free operation
- 90% efficiency
- Output power for stereo headphones or stereo speakers applications (at THD = 10% and VCC= 3.3 V):
45 mW with 32-Ω headphones 85 mW with 16-Ω headphones 720 mW with 8-Ω speakers 1.1 W with 4-Ω speakers
Circuit Diagram
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS5050: FFX™ audio codec with analog and digital inputs and 2 x 1.2 W (or 2 x 100 mW HP) class-D amplifier
|
3.0 | 509 KB |
|
DB0353: 2 x 100 mW class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX
|
1.2 | 81 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN2542: Demo board BT-HTS-Rx_V1.0 for audio receiver using Bluetooth® wireless technology
|
2.2 | 766 KB |
|
AN2612: How to use the BT_HTS_RX_R2 evaluation board
|
1.2 | 1,684 KB |
|
AN3340: Loudspeaker characterization and compensation
|
1.2 | 3,944 KB |
|
AN3984: IIR filter design equations for Sound Terminal® devices
|
1.0 | 494 KB |
|
AN4118: APWLink USB interface board for Sound Terminal® demonstration boards
|
2.0 | 1,029 KB |
User Manual
| Description | Version | Size |
|---|---|---|
|
UM0457: How to use the BT_HTS_RX_R2
|
1.2 | 377 KB |
|
UM1545: Using the Audio Processor Workbench (APWorkbench)
|
1.0 | 3,221 KB |
Presentations & Training Material
Presentations
| Description | Version | Size |
|---|---|---|
|
Sound Terminal audio ICs
|
1.0 | 322 KB |
Training Material
| Description | Version | Size |
|---|---|---|
|
Learn the basics about STSpeakerSafe technology
|
1.0 | 197 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| STSW-AUDIO011 | APWorkbench for audio |
Publications and Collaterals
Flyer
| Description | Version | Size |
|---|---|---|
|
Sound Terminal TM for Bluetooth®
|
1.0 | 216 KB |
|
Sound Terminal for portable audio
|
201 KB |
Brochure
| Description | Version | Size |
|---|---|---|
|
FFX: Full flexible amplification
|
1.0.0 | 864 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | Automotive Grade | Order From ST | Unit Price (US$)* @ 1000 | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STA529 | Active | TFBGA 48 5x5x1.2 | Tray | _ | - | 1.5 | No data reported, please contact our Distributors | Ecopack2 | - | |||||||||||||||||
| STA529Q | Active | VFQFPN2 52 8x8x1.0 | Tray | 0 | 70 | _ | 1.5 |
| Ecopack2 | PDF XML | ||||||||||||||||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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