MAX9788

14VP-P, Class G Ceramic Speaker Driver

Class G, CeraMax Technology Drives Ceramic Speakers in the Smallest Footprint


Please check latest availability status for a specific part variant.

Description

The MAX9788 features a mono Class G power amplifier with an integrated inverting charge-pump power supply specifically designed to drive the high capacitance of a ceramic loudspeaker. The charge pump can supply greater than 700mA of peak output current at 5.5VDC, guaranteeing an output of 14VP-P.

The MAX9788 maximizes battery life by offering high-performance efficiency. Maxim's proprietary Class G output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers.

The MAX9788 is ideally suited to deliver the high output-voltage swing required to drive ceramic/piezoelectric speakers.

The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9788 is fully specified over the -40°C to +85°C extended temperature range and is available in small lead-free 28-pin TQFN (4mm x 4mm) or 20-bump WLP (2mm x 2.5mm) packages.
MAX9788: Simplified Block Diagram MAX9788: Simplified Block Diagram Enlarge+

Key Features

  • Integrated Charge-Pump Power Supply—No Inductor Required
  • 14VP-P Voltage Swing into Piezoelectric Speaker
  • 2.7V to 5.5V Single-Supply Operation
  • Clickless/Popless Operation
  • Small Thermally Efficient Packages
    • 4mm x 4mm 28-Pin TQFN
    • 2mm x 2.5mm 20-Bump WLP

Applications/Uses

  • Cellular Phones
  • Handheld Gaming Consoles
  • MP3 Players
  • Notebook Computers
  • Personal Media Players
  • Smartphones
Part NumberClassSpkr. Amp. VCC
(V)
Spkr. Amp. VCC
(V)
Spkr. Amp. ICC
(mA)
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
minmaxtypminminA- WeightedminSee Notes
MAX9788 Boosted/G2.75.582.42.80.0710877
TQFN/28
WLP/20
$1.08 @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.


MAX9788EVKIT: Evaluation Kit for the MAX9788

Technical Documents

Tutorial 5590 How to Select the Best Audio Amplifier for Your Design
Tutorial 4164 Amplifier Considerations in Ceramic Speaker Applications

Quality and Environmental Data

Product Reliability Reports: MAX9788.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX9788ETI+
  • MAX9788ETI+T
  • MAX9788EWP+TG45
  • 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


    MAX98390
    Boosted Class-D Amplifier with Integrated Dynamic Speaker Management

    • Integrated Speaker Current and Voltage Sense Requires no External Components
    • Integrated Programmable 10V Boost Converter
    • Integrated Dynamic Speaker Management


    PDF Title