MAX98358

PDM Input Class D Audio Power Amplifier

High-Performance, Low-Noise Digital Input Class D Amplifier


Please check latest availability status for a specific part variant.

Description

The MAX98358 is a digital pulse-density modulated (PDM) input Class D power amplifier that provides Class AB audio performance with Class D efficiency. This IC offers five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN). The IC can be configured to produce a left channel, right channel, or (left/2 + right/2) output from the stereo input data.

The MAX98358 takes a stereo pulse density modulated (SPDM) input signal directly into the DAC. Data on the rising edge of PDM_CLK is considered left-channel data while data on the falling PDM_CLK edge is right channel. A mono sum feature is also implemented with SPDM data input by summing the data from both rising and falling clock edges.

Active emissions-limiting, edge-rate limiting, and overshoot control circuitry greatly reduce EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices and reduces the component count of the solution.

The IC is available in 9-pin WLP (1.345mm x 1.435mm x 0.64mm) and 16-pin TQFN (3mm x 3mm x 0.75mm) packages and is specified over the -40°C to +85°C temperature range.
MAX98358: Simplified Block Diagram MAX98358: Simplified Block Diagram Enlarge+

Key Features

  • Single-Supply Operation (2.5V to 5.5V)
  • 3.2W Output Power into 4Ω at 5V
  • 1.8mA Quiescent Current (VDD = 3.7V)
  • 92% Efficiency (RL = 8Ω, POUT = 1.5W)
  • 29µVRMS Output Noise (AV = 6dB)
  • Low 0.015% THD+N at 1kHz
  • Supported PDM_CLK Rates of 1.84MHz–4.32MHz and 5.28MHz–8.64MHz
  • Supports Left, Right, or Left/2 + Right/2 Outputs
  • Sophisticated Edge Rate Control Enables Filterless Class D Outputs
  • 77dB PSRR at 217Hz
  • Low RF Susceptibility Rejects TDMA Noise from GSM Radios
  • Extensive Click-and-Pop Reduction Circuitry
  • Robust Short-Circuit and Thermal Protection
  • Available in Space-Saving Packages: 1.345mm x 1.435mm WLP (0.4mm Pitch), 3mm x 3mm TQFN

Applications/Uses

  • Cellular Phones
  • Notebook and Netbook Computers
  • Portable Media Players
  • Tablets
Part NumberClassSpkr. Amp. VCC
(V)
Spkr. Amp. VCC
(V)
Spkr. Amp. ICC
(mA)
POUT into 4Ω @ 1% THD+N
(W)
POUT into 4Ω @ 10% THD+N
(W)
POUT into 8Ω @ 1% THD+N
(W)
POUT into 8Ω @ 10% THD+N
(W)
Spkr. Amp. Half Pwr. THD+N
(%)
SNR
(dB)
PSRR
(dB)
Package/PinsBudgetary
Price
minmaxtypminminminminA- WeightedminSee Notes
MAX98358 D2.55.51.82.53.21.41.80.0139977
TQFN/16
WLP/9
$0.87 @1k
See All Speaker Amplifiers (33)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAXAUDINT001: Evaluation Kit for the MAXQ2000/MAX98357A/MAX98357B/MAX98358 and MAX98371
MAX98358DEV#TQFN: Evaluation Kit for the MAX98358
MAX98358DEV#WLP: Evaluation Kit for the MAX98358
MAX98358EVSYS#TQFN: Evaluation Kit for the MAX98358
MAX98358EVSYS#WLP: Evaluation Kit for the MAX98358

Quality and Environmental Data

Product Reliability Reports: MAX98358.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX98358ETE+
  • MAX98358ETE+T
  • MAX98358EWL+
  • MAX98358EWL+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


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