Scalable digital microphone processor

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  • The STA321MPL1 is a PDM, high-performance, multichannel processor with ultra-low quiescent current. It is designed for general-purpose digital microphone applications. The device is fully digital and is comprised of three main sections. The first section is the PDM input interface which can accept up to six serial digital inputs. The second section is a high-quality audio processor allowing flexible channel mixing/muxing and provides up to 10 biquads for general sound equalization and voice enhancement with independent volume control. The last block is the I²S output interface which streams out the processed digital audio. The output interface can also be programmed for flexible channel mapping. The device offers some of the most commonly required audio enhancements such as programmable voice tuning and equalization, limiter/compressor for improved voice quality, multiband selection for customizable microphone usage, and configurable wind-noise rejection. The embedded digital processor allows the microphone processing to be offloaded from the main CPU or SoC to the device.

    The STA321MPL1 has six digital microphone inputs, providing connections for up to three dual-membrane microphones.

    Key Features

    • 8 digital processing channels each 24-bits
      • 6 channels of PDM input
      • 2 additional virtual channels
    • >100 dB SNR and dynamic range
    • Digital gain/attenuation 58 dB to -100 dB in 0.5 dB steps
    • Soft volume update
    • Individual channel and master level control
    • Up to 10 independent 32-bit user-programmable biquads (EQ) per channel
    • Bass/treble tone control
    • Pre- and post-EQ full 8-channel input mix on all 8 channels
    • Dual independent limiters/compressors
    • Dynamic range compression or anti-clipping modes
    • Individual channel and master soft/hard mute
    • 3 I²S data outputs
    • I²S data output channel mapping function
    • Independent channel volume and DSP bypass
    • Channel mapping of any input to any processing channel

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
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min
max
STA321MPL1TR LQFP 64 10x10x1.4 Tape And Reel -40 90
Active
- EAR99
MORE INFO

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTA321MPL1TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 150 1 Order Now
AVNET AMERICA 1000 0 Order Now

Distributor reported inventory date: 2019-10-02

Distributor Name

DIGIKEY

Stock

150

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2019-10-02

Buy now

STA321MPL1TR

Package

LQFP 64 10x10x1.4

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTA321MPL1TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 150 1 Order Now
AVNET AMERICA 1000 0 Order Now

Distributor reported inventory date: 2019-10-02

Distributor Name

DIGIKEY

Stock

150

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2019-10-02

Operating Temperature (°C)

(min)

-40

(max)

90

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

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Technical Documentation

    • Description Version Size Action
      DS11676
      Scalable digital microphone processor
      1.0
      1.63 MB
      PDF
      DS11676

      Scalable digital microphone processor

    • Description Version Size Action
      AN3340
      Loudspeaker characterization and compensation
      1.3
      3.85 MB
      PDF
      AN3340

      Loudspeaker characterization and compensation

Publications and Collaterals

    • Description Version Size Action
      ST’s solutions for mobile devices 3.2
      2.13 MB
      PDF

      ST’s solutions for mobile devices

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STA321MPL1TR
Active
LQFP 64 10x10x1.4 Industrial Ecopack1 (*)

STA321MPL1TR

Package:

LQFP 64 10x10x1.4

Material Declaration**:

Marketing Status

Active

Package

LQFP 64 10x10x1.4

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

(**) 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.