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Mono 7W Class D Amplifier

Direct-from-Battery 7W Class D Amplifier Slashes Notebook 2.1 Solution Cost

Product Details

Key Features

Parametric specs for Speaker Amplifiers
# Channels 1
Class D
Spkr. Amp. VCC (V) (min) 8
Spkr. Amp. VCC (V) (max) 28
Spkr. Amp. ICC (mA) (typ) 15
POUT into 4Ω @ 1% THD+N (W) (min) 12
POUT into 4Ω @ 10% THD+N (W) (min) 14
POUT into 8Ω @ 1% THD+N (W) (min) 6
POUT into 8Ω @ 10% THD+N (W) (min) 7.5
Spkr. Amp. Half Pwr. THD+N (%) 0.06
SNR (dB) (A- Weighted) 97
PSRR (dB) (min) 80
Package/Pins TQFN/24
Budgetary
Price (See Notes)
1.42
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Simplified Block Diagram

Technical Docs

Data Sheet Mono 7W Class D Amplifier Nov 18, 2008

Support & Training

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Filtered Search

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Speaker Amplifiers
# Channels 1
Class D
Spkr. Amp. VCC (V) (min) 8
Spkr. Amp. VCC (V) (max) 28
Spkr. Amp. ICC (mA) (typ) 15
POUT into 4Ω @ 1% THD+N (W) (min) 12
POUT into 4Ω @ 10% THD+N (W) (min) 14
POUT into 8Ω @ 1% THD+N (W) (min) 6
POUT into 8Ω @ 10% THD+N (W) (min) 7.5
Spkr. Amp. Half Pwr. THD+N (%) 0.06
SNR (dB) (A- Weighted) 97
PSRR (dB) (min) 80
Package/Pins TQFN/24
Budgetary
Price (See Notes)
1.42

Key Features

  • 8V to 28V Supply Voltage Range
  • Spread-Spectrum Modulation Enables Low-EMI Solution
  • Passes EMI Limit with Up to 1m of Speaker Cable
  • High 80dB PSRR
  • Up to 88% Efficiency Eliminates Heatsink
  • Thermal and Output Current Protection
  • < 1µA Shutdown Mode
  • Click-and-Pop Suppression
  • < 10ms Turn-On Time
  • Space-Saving, 4mm x 4mm x 0.8mm, 24-Pin TQFN Package

Applications/Uses

  • 2.1 Notebook PCs
  • LCD/PDP/CRT Monitors
  • MP3 Docking Stations
  • PC Surround Speakers

Description

The MAX9737 mono 7W Class D amplifier provides a high-performance, thermally efficient amplifier solution that offers up to 88% efficiency at a 12V supply. The device operates from 8V to 28V and provides a high 80dB PSRR, eliminating the need for a regulated power supply.

Filterless modulation allows the MAX9737 to pass CE EMI limits with 1m cables using only a low-cost ferrite bead and small-value capacitor on each output.

Comprehensive click-and-pop suppression circuitry reduces noise on power-up/down or into and out of shutdown or mute.

An input op amp allows the user to create a lowpass or highpass filter, and select an optimal gain. The internal precharge circuit ensures clickless/popless turn-on within 10ms.

The MAX9737 is available in the 24-pin, TQFN-EP package and is specified over the -40°C to +85°C temperature range.

Simplified Block Diagram

MAX9737: Typical Application Circuit MAX9737: Typical Application Circuit Zoom icon

Technical Docs

Data Sheet Mono 7W Class D Amplifier Nov 18, 2008

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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.