MAX9736 Mono/Stereo High-Power Class D Amplifier

Description

The MAX9736A/B Class D amplifiers provide high-performance, thermally efficient amplifier solutions. The MAX9736A delivers 2 x 15W into 8Ω loads, or 1 x 30W into a 4Ω load. The MAX9736B delivers 2 x 6W into 8Ω loads or 1 x 12W into a 4Ω load. These devices are pin-for-pin compatible, allowing a single audio design to work across a broad range of platforms, simplifying design efforts, and reducing PCB inventory.

Both devices operate from 8V to 28V and provide a high PSRR, eliminating the need for a regulated power supply. The MAX9736 offers up to 88% efficiency at 12V supply.

Pin-selectable modulation schemes select between filterless modulation and classic PWM modulation. Filterless modulation allows the MAX9736 to pass CE EMI limits with 1m cables using only a low-cost ferrite bead and capacitor on each output. Classic PWM modulation is optimized for best audio performance when using a full LC filter.

A pin-selectable stereo/mono mode allows stereo operation into 8Ω loads or mono operation into 4Ω loads. In mono mode, the right input op amp becomes available as a spare device, allowing flexibility in system design. Comprehensive click-and-pop reduction circuitry minimizes noise coming into and out of shutdown or mute.

Input op amps allow the user to create summing amplifiers, lowpass or highpass filters, and select an optimal gain.

The MAX9736A/B are available in 32-pin TQFN packages and specified over the -40°C to +85°C temperature range.

Key Features

Applications/Uses

Wide 8V to 28V Supply Voltage Range
Spread-Spectrum Modulation Enables Low EMI Solution
Passes CE EMI Limits with Low-Cost Ferrite Bead/Capacitor Filter
Low BOM Cost, Pin-for-Pin Compatible Family
High 67dB PSRR at 1kHz Reduces Supply Cost
88% Efficiency Eliminates Heatsink
Thermal and Output Current Protection
< 1µA Shutdown Mode
Mute Function
Space-Saving, 7mm x 7mm x 0.8mm, 32-Pin TQFN Package

	All-in-One PCs
	LCD/PDP/CRT Monitors
	LCD/PDP/CRT TVs
	MP3 Docking Stations
	Notebook PCs
	PC Speakers

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 4Ω @ 1% THD+N (W)

P_OUT into 4Ω @ 10% THD+N (W)

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

Price^**

MAX9736A

13.5

17.5

0.04

96.5

Yes

•	Filterless Operation

•

Mono Mode

•	Pin-for-Pin Compatible Packaging

•	Wide Supply Range

$1.05 @ 1k

MAX9736B

7.5

$1.00 @ 1k

See All Speaker Amplifiers (30)

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.

Reliability Reports


		Reliability Report: MAX9736B.pdf

		Show FIT data for:

		Request Reliability Report for:

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: 1-6 of 6

MAX9736A

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9736AETJ+

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9736AETJ+T

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9736B

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9736BETJ+

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9736BETJ+T

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9736BETJ/V+

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

See data sheet
Materials Analysis

MAX9736BETJ/V+T

TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0126 (PDF)
Use pkgcode/variation: T3277+3*

-40°C to +85°C

See data sheet
Materials Analysis

More Information

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