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MAX98307, MAX98308

3.3W, Mono Class DG Multilevel Speaker Amplifiers

Delivers the Industry's Highest Output Power, Highest Efficiency, and Smallest Speaker Amplifier Solutions from a Single Li+ Battery

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX98307/MAX98308 fully differential mono Class DG multilevel power amplifiers with integrated inverting charge pumps offer highly efficient, high-power audio solutions for portable applications.

Class DG multilevel modulation extends the dynamic range of the output signal by employing a charge-pump-generated negative rail as needed to extend the supply voltage. This scheme results in high efficiency over a wide output power range.

The ICs combine Maxim's active emissions limiting edge rate and overshoot control circuitry with multilevel output modulation to greatly reduce EMI. These features eliminate the need for output filtering as compared to traditional Class D devices, reducing component count and cost.

The MAX98307's 16-pin TQFN package features an adjustable gain set by external resistors. The MAX98308's space-saving 12-bump WLP package features an internally fixed gain of 8.5dB, 11.5dB, 14.5dB, 17.5dB, and 20.5dB set by a single gain input. Both devices operate over the extended -40°C to +85°C temperature range.

Data Sheet

Download	Rev 4	(PDF, 3.3MB)
E-Mail

An evaluation kit is available: MAX98307EVKIT

Key Features

High Efficiency Combined with High Output Power
- Class DG Multilevel Modulation Ensures Maximum Efficiency Over Wide Output Power Range
Improves Battery Life
- Low 1.85mA Quiescent Current
High Output Power at 1% THD+N
- 1.54W at V_PVDD = 3.6V, 8Ω + 68µH Load
- 2.85W at V_PVDD = 5V, 8Ω + 68µH Load
High Output Power at 10% THD+N
- 1.77W at V_PVDD = 3.6V, 8Ω + 68µH Load
- 3.3W at V_PVDD = 5V, 8Ω + 68µH Load
84% Efficiency (V_PVDD = 3.6V, at 500mW Output)
Active Emissions Limiting and Class DG Multilevel Output Modulation Eliminates EMI Output Filtering Requirement
Integrated Charge Pump and High Efficiency Results in Small Solution Size
Excellent RF Immunity
Click-and-Pop Suppression
Thermal and Overcurrent Protection
Low-Current Shutdown Mode

Applications/Uses

Cellular Phones
Notebook Computers
Portable Audio
Smartphones
Tablet PCs
VoIP Phones

Key Specifications:

Speaker Amplifiers

Part Number

Class

Spkr. Amp. V_CC
(V)

Spkr. Amp. I_CC
(mA)

P_OUT into 8Ω @ 1% THD+N
(W)

P_OUT into 8Ω @ 10% THD+N
(W)

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

SNR
(dB)

PSRR
(dB)

Spkr. Amp. Ext. Gain

Spkr. Amp. Fxd. Gain
(V/V)

Channels

Budgetary Price

min

max

typ

min

A- Weighted

min

max

See Notes

MAX98307

2.6

5.25

1.85

2.85

3.3

0.05

103

Yes

$0.55 @1k

MAX98308

2.7

2.13

2.7

10.6

See All Speaker Amplifiers (44)

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

Diagram

Simplified Block Diagrams

Product Guides

Audio (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX98307ETE+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0032 (PDF) Use pkgcode/variation: T1633+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX98307ETE+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0032 (PDF) Use pkgcode/variation: T1633+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX98308EVKIT#			Active	KIT; Land Pattern: Not Available		See data sheet
MAX98308EWC+T			Active	WLP;12 pin;WLP; Outline Drawing:21-0449 (PDF) Land Pattern: Not Available Use pkgcode/variation: W121A1+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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Evaluation Kits

MAX98307EVKIT

Evaluation Kit for the MAX98307

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