MAX9768 10W Mono Class D Speaker Amplifier with Volume Control

Description

The MAX9768 mono 10W Class D speaker amplifier provides high-quality, efficient audio power with an integrated volume control function.

The MAX9768 features a 64-step dual-mode (analog or digitally programmable) volume control and mute function. The audio amplifier operates from a 4.5V to 14V single supply and can deliver up to 10W into an 8Ω speaker with a 14V supply.

A selectable spread-spectrum mode reduces EMI-radiated emissions, allowing the device to pass EMC testing with ferrite bead filters and cable lengths up to 1m. The MAX9768 can be synchronized to an external clock, allowing synchronization of multiple Class D amplifiers.

The MAX9768 features high 77dB PSRR, low 0.08% THD+N, and SNR up to 97dB. Robust short-circuit and thermal-overload protection prevent device damage during a fault condition. The MAX9768 is available in a 24-pin thin QFN-EP (4mm x 4mm x 0.8mm) package and is specified over the extended -40°C to +85°C temperature range.

Key Features

Applications/Uses

10W Output (8Ω, PV_DD = 14V, THD+N = 10%)
Patented Spread-Spectrum Modulation
Meets EN55022B EMC with Ferrite Bead Filters
Amplifier Operation from 4.5V to 14V Supply
64-Step Integrated Volume Control (I²C or Analog)
Low 0.08% THD+N (R_L = 8Ω, P_OUT = 6W)
High 77dB PSRR
Two t_ON Times Offered
- MAX9768—220ms
- MAX9768B—15ms
Low-Power Shutdown Mode (0.5µA)
Short-Circuit and Thermal-Overload Protection

	Flat-Panel Displays
	GPS Navigation Systems
	Multimedia Monitors
	Notebook Computers
	Security/Personal Mobile Radio

Key Specifications: Speaker Amplifiers

Part Number

Class

Speaker Amp. V_CC (min) (V)

Speaker Amp. V_CC (max) (V)

Speaker Amp. I_CC (typ) (mA)

P_OUT into 8Ω @ 1% THD+N (W)

P_OUT into 8Ω @ 10% THD+N (W)

Speaker Amp. Half Pwr. THD+N (%)

SNR, A-weighted (dB)

PSRR (db)

Speaker Amp. External Gain

Features

Number of Channels

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^**

MAX9768

4.5

0.09

Yes

•	Analog or Digitally Programmable Volume Control

•	External Clock Synchronization

•	Filterless Operation

•	Wide Supply Range

Yes

THIN QFN/24

$1.35 @ 1k

See All Speaker Amplifiers (29)

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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-4 of 4

MAX9768

Free
Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9768BETG+

THIN QFN;24 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2444+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9768BETG+T

THIN QFN;24 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2444+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9768ETG+

THIN QFN;24 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2444+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9768ETG+T

THIN QFN;24 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2444+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

More Information

	New Product Press Release 2007-11-05
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