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Low-Power, Stereo Audio Codec with FlexSound Technology

High Integration Frees Up Board Space in Tablets and Netbooks

Product Details

Key Features

Parametric specs for Audio Data Converters
Functions Audio CODEC
VSUPPLY (V) (min) 1.65 (Analog)
1.65 (Digital)
VSUPPLY (V) (max) 2.0 (Analog)
3.6 (Digital)
IQ (mA) 1.9 (Playback)
# ADCs 2
# DACs 2
SNR (dB) (ADC) 93
Bit Depth (ADC) 24
Sample Rate (kHz) (ADC) 8 to 96
SNR (dB) (DAC) 101
Bit Depth (DAC) 24
Sample Rate (kHz) (DAC) 8 to 96
Pitch (mm) 0.4
Interface Audio - I2S
Serial - I2C
Package/Pins TQFN/56
WLP/63
Budgetary
Price (See Notes)
2.21
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Simplified Block Diagram

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Parameters

Parametric specs for Audio Data Converters
Functions Audio CODEC
VSUPPLY (V) (min) 1.65 (Analog)
1.65 (Digital)
VSUPPLY (V) (max) 2.0 (Analog)
3.6 (Digital)
IQ (mA) 1.9 (Playback)
# ADCs 2
# DACs 2
SNR (dB) (ADC) 93
Bit Depth (ADC) 24
Sample Rate (kHz) (ADC) 8 to 96
SNR (dB) (DAC) 101
Bit Depth (DAC) 24
Sample Rate (kHz) (DAC) 8 to 96
Pitch (mm) 0.4
Interface Audio - I2S
Serial - I2C
Package/Pins TQFN/56
WLP/63
Budgetary
Price (See Notes)
2.21

Key Features

  • 5.6mW Power Comsumption (DAC to HP at 97dB DR)
  • 101dB DR Stereo DAC (8kHz < fS < 96kHz)
  • 93dB DR Stereo ADC (8kHz < fS < 96kHz)
  • Stereo, Low-EMI Class D Amplifiers
    • 1.7W/Channel(8Ω, VSPK_VDD = 5.0V)
    • 2.9W/Channel(4Ω, VSPK_VDD = 5.0V)
  • Efficient Class H Headphone Amplifier
  • Differential Receiver Amplifier/Stereo Line Outputs
  • 2 Stereo, Single-Ended/Mono Differential Line Inputs
  • 3 Differential Microphone Inputs
  • FlexSound Technology
    • 5-Band Parametric EQ
    • Automatic Level Control (ALC)
    • Excursion Limiter
    • Speaker Power Limiter
    • Speaker Distortion Limiter
    • Microphone Automatic Gain Control and Noise Gate
  • Dual I²S/PCM/TDM Digital Audio Interfaces
  • Asynchronous Digital Mixing
  • Supports Master Clock Frequencies from 10MHz to 60MHz
  • RF Immune Analog Inputs and Outputs
  • Extensive Click-and-Pop Reduction Circuitry
  • Available in 63-Bump WLP Package (3.80mm x 3.30mm, 0.4mm Pitch) and 56-Pin TQFN Package (7mm x 7mm x 0.75mm)

Applications/Uses

  • Ideal for any product (e.g., tablets, netbooks, smartbooks) that uses a codec, but cannot afford to use higher cost HDI (high density) PCBs.

Description

The MAX98089 is a full-featured audio codec with Maxim's FlexSound® digital signal processor. This highly integrated device offers a stereo Class D speaker amplifier, stereo Class H headphone amplifier, a differential receiver amplifier, and up to three differential microphone amplifiers. All in a small WLP or TQFN package.

Class D speaker amplifiers provide efficient amplification for two speakers. Low radiated emissions enable completely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer when the Class D amplifiers are disabled.

The IC features a stereo Class H headphone amplifier that utilizes a dual-mode charge pump to maximize efficiency while outputting a ground referenced signal that does not require output coupling capacitors.

The IC also features a mono differential amplifier that can be configured as a stereo line output.

Two differential analog microphone inputs are available, as well as support for two PDM digital microphones. Integrated switches allow for an additional microphone input as well as microphone signals to be routed out to external devices. Two flexible single-ended or differential line inputs may be connected to an FM radio or other sources.

Integrated FlexSound technology improves loudspeaker performance by optimizing signal level and frequency response, while limiting the maximum distortion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range.

The device is fully specified over the -40°C to +85°C extended temperature range.

Simplified Block Diagram

MAX98089: Simplified Block Diagram MAX98089: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .