ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC AMP CLASS H STER 30MW 16WLCSP
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tape & Reel (TR)
- Type：Class H
- Output Type：Headphones, 2-Channel (Stereo)
- Max Output Power x Channels @ Load：30mW x 2 @ 16Ohm
- Voltage - Supply：2.3V ~ 5.5V
- Features：Differential Inputs, I2C, Short-Circuit and Thermal Protection, Shutdown, Volume Control
- Mounting Type：Surface Mount
- Supplier Device Package：16-WLCSP (1.62x1.62)
- Package / Case：16-UFBGA, WLCSP
- Operating Temperature：-
- Grade：-
- Qualification：-
Download product information
Overview
The AS3561-BWLT is a Class-H stereo headphone amplifier designed for portable devices. It features an integrated DCDC buck converter and charge pump, supporting a supply voltage range of 2.3V to 5.5V. The device delivers 30mW per channel into a 16-ohm load with 0.02% THD at 1V rms. Key electrical parameters include a quiescent current of 1mA (both channels enabled) and a shutdown current under 5μA. It provides over 100dB SNR and utilizes differential inputs with ground sensing for low noise sensitivity.
Feature Summary
- Class-H architecture with integrated DCDC buck converter for significant power savings compared to traditional Class-AB amplifiers.
- Integrated charge pump generates symmetric negative supply for true ground output signal levels without requiring output coupling capacitors.
- I2C control interface enables 32-step volume control with independent channel mute and enable functions.
- Fully differential inputs combined with SGND pin for ground feedback minimize system noise and interference sensitivity.
Applications
- Mobile Phones
- Portable Navigation Devices
- Media Devices
Procurement Notes
Verify the ordering code matches AS3561BWLT exactly. Confirm RoHS compliance and Pb-free status as stated in the datasheet. Ensure the package type corresponds to the 0.4 mm Pitch WCSP (1.615x1.615mm). Check that the revision level aligns with your design requirements, noting preliminary revisions may have updated specifications.
Selection Notes
Select this component when battery life optimization is critical due to its Class-H efficiency. It is suitable for designs requiring true ground output without external coupling capacitors. The I2C interface allows for flexible digital control of volume and mute states. Ensure the application supports the required 1.8V logic levels for SCL and SDA pins.
Part Context
The AS3561-BWLT belongs to the AS3561 family of Class-H stereo headphone amplifiers manufactured by austriamicrosystems AG. It is specifically optimized for portable electronics where power consumption and audio quality are paramount. The BWLT suffix indicates the tape and reel delivery form factor within the standard product lineup.
Replacement Considerations
No public confirmed substitute part numbers are documented in the provided source material.
FAQ
How does the AS3561 achieve true ground output?
It uses an integrated charge pump to generate a symmetric negative supply, eliminating the need for output coupling capacitors.
What protection features are included?
The device includes a supervisory circuit for overtemperature protection (shutdown at 140°C) and short-circuit protection.
Can the inputs be configured for single-ended signals?
Yes, while fully differential inputs reduce system noise, they can also be configured as single-ended inputs using external capacitors.
