MAX9744ETH+ by Analog Devices

20W Stereo Class D Speaker Amplifier with Volume Control


The MAX9744 20W stereo Class D audio power amplifier provides Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. This device features single-supply operation, adjustable gain, shutdown mode, a SYNC output, speaker mute, and industry-leading click-and-pop suppression. The MAX9744 features a 64-step dual-mode (analog or digital), programmable volume control and mute function. The MAX9744 operates from a 4.5V to 14V single supply and can deliver up to 20W per channel into a 4Ω speaker with a 14V supply. The MAX9744 offers two modulation schemes: a fixed-frequency modulation mode that allows one of several preset switching frequencies to be selected, and a spread-spectrum modulation mode that helps to reduce EMI-radiated emissions. The MAX9744 features high 75dB PSRR, low 0.04% THD+N, and SNR in excess of 90dB. Robust short-circuit and thermal-overload protection prevent device damage during a fault condition. The MAX9744 is available in a 44-pin thin QFN-EP (7mm x 7mm x 0.8mm) package and is specified over the extended -40°C to +85°C temperature range.

Where to Buy

Prices starting from US$3.20

Distributor Stock
Logo for Farnell
Farnell
from US$3.87
1,666
in stock
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Logo for Analog Devices
Analog Devices
from US$3.20
3,633
in stock
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Newark Electronics
from US$4.59
1,666
in stock
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element14
from US$3.89
1,666
in stock
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Features

Wide 4.5V to 14V Power-Supply Voltage Range
Filterless Spread-Spectrum Modulation Lowers Radiated RF Emissions from Speaker Cables
20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)
Integrated Volume Control (I²C or Analog)
Low 0.04% THD+N
High 75dB PSRR
High 93% Efficiency
Integrated Click-and-Pop Suppression
Low-Power Shutdown Mode
Short-Circuit and Thermal-Overload Protection
Available in a 44-Pin Thin QFN-EP (7mm x 7mm x 0.8mm)

Specifications

# Channels 2
Class D
Spkr. Amp. VCC (V) (min) 4.5
Spkr. Amp. VCC (V) (max) 14
POUT into 4Ω @ 10% THD+N (W) (min) 20
Spkr. Amp. Half Pwr. THD+N (%) 0.04
SNR (dB) (A- Weighted) 95
PSRR (dB) (min) 75
Package/Pins TQFN/44
BudgetaryPrice (See Notes) 2.86


MAX9744ETH+ Sensors & Transducers by Analog Devices

IC AUDIO AMP 20W CLASS D 44TQFN

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Output Type -
Sensing Accuracy Range -
Sensing Temperature Min -
Sensing Temperature Max -
Sensor Case Style -
No. of Pins 44Pins
Supply Voltage Min 2.7V
Supply Voltage Max 3.6V
Product Range -
MSL MSL 1 - Unlimited
Amplifer Supply Voltage 4.5V to 14V
Amplifier Case Style TQFN
Amplifier Class D
Audio Power Amplifier Type Class D
Base Number 9744
Load Impedance 4ohm
No. of Channels 2Channels
Operating Temperature Max 85°C
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Output Power 20W
Output Power (Pout) 20W
Supply Voltage Range 4.5V to 14V
THD + N 0.04% @ 5W 8ohm VDD=3.3V
Termination Type Surface Mount Device

Alternative Descriptions

20W Stereo Class D Speaker Amp | Analog Devices
Ic, Audio Amp, 20W, Class D, 44Tqfn | Newark Electronics
IC, AUDIO AMP, 20W, CLASS D, 44TQFN | element14

Frequently Asked Questions

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Is the MAX9744ETH+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX9744ETH+ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX9744ETH+ .

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