Datasheet AS3421-EQFP-500 - AustriaMicroSystems Audio Amplifiers

Detailed Description

Manufacturer: AustriaMicroSystems

Description: Audio Amplifiers

Download Data Sheet

Docket:
D a tas hee t
A S3 4 2 1 A S 3 4 22
L o w P o w e r A m b ie n t No is e- C an ce ll in g S p e a k er Dr i ve r
1 General Description
The AS3421/22 are speaker driver with Ambient Noise Cancelling function for headsets, headphones or ear pieces.

It is intended to improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise. The fully analog implementation allows the lowest power consumption, lowest system BOM cost and most natural received voice enhancement otherwise difficult to achieve with DSP implementations. The device is designed to be easily applied to existing architectures. An internal OTP-ROM can be optionally used to store the microphone gain calibration settings as well as all application specific settings. The AS3421/22 can be used in different configurations for best trade-off of noise cancellation, required filtering functions and mechanical designs. The simpler feed-forward topology is used to effectively reduce frequencies t

Specifications:

• Maximum Power Dissipation: 200 mW
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 1 V to 1.8 V
• Output Power: 12 mW
• Package / Case: QFN-24
• Product: Audio Line Drivers / Receivers
• Supply Current: 4.6 mA
• Supply Voltage Range: 1 V to 1.8 V
• THD plus Noise: 0.1 %
• RoHS: Yes

Other Names:

AS3421EQFP500, AS3421 EQFP 500