Audience

A1024 Performance Specifications

Transmit Noise Suppression

   Handheld Mode (Close-Talk)

  • Up to 35 dB suppression of stationary noise sources
  • Up to 30 dB suppression of non-stationary noise sources
  • Convergence: 500 ms startup, 5 msec continuous
  • MOS Improvement: Average +0.77 @ SNR range of 0 to 12 dB

   Speakerphone/Video Telephony Mode (Far-Talk)

  • Up to 25 dB suppression of stationary noise sources
  • Up to 18 dB suppression of non-stationary noise sources
  • Convergence: 500 ms startup, 5 msec continuous

Receive Noise Suppression

  • Up to 20 dB suppression of stationary noise sources
  • Up to 18 dB suppression of non-stationary noise sources

Acoustic Echo Cancellation

  • Convergence Time: < 80 msec
  • Type 1 per ITU P.340 specifications in speakerphone mode
  • Echo Return Loss Enhancement (ERLE): >35 dB
  • Echo Tail Length: Up to 1000 ms

Voice Equalization

  • SNR Target: 15 dB or less
  • Performance: Maintains SNR within +/- 2 dB for 15 dB SNR Range

Processor

  • Custom low power DSP with built-in program and data memories
  • High performance voice processing architecture
  • Software selectable features via host interface

Control Interface

  • I²C Slave (7-bit & 10-bit address)

Audio Interfaces

  • Analog (2 channel in/1 channel out)
  • Digital bi-directional PCM audio (2 channels)
  • Dual Digital Microphone (PDM) Interface

Clock and Power Management

  • Clock input: 12MHz to 26MHz
  • 1.8V~3.3V I/O
  • Built-in 1.2V LDOs for analog and digital core operation
  • Two power modes: active and sleep

Package

  • 40-pin (2.7mm x 3.5mm) WLCSP, 0.5mm bump pitch
  • RoHS Compliant

A1024 Block Diagram