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MAX98314

Mono 3.2W Class D Amplifier with Integrated Input Coupling Capacitors

Industry's Smallest Class D Solution Integrates Input Capacitors, Saving > 25% Board Space!

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX98314 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0dB, 3dB, 6dB, 9dB, and 12dB) set by a single gain-select input (GAIN).

Active emissions limiting (AEL) edge rate and overshoot control circuitry and a filterless spread-spectrum modulation (SSM) scheme greatly reduce EMI and eliminate the need for output filtering found in traditional Class D devices.

The IC's low 0.95mA at 3.7V, 1.2mA at 5.0V quiescent current extends battery life in portable applications.

Highly linear, integrated input coupling capacitors (C_IN) reduce solution size and provide excellent THD+N, PSRR, and CMRR performance at low frequencies vs. standard Class D amplifiers using external input capacitors.

The IC is available in a small 9-bump, 0.3mm pitch WLP (1.0mm x 1.0mm x 0.80mm) package and is specified over the -40°C to +85°C extended temperature range.

Data Sheet

Download	Rev 0	(PDF, 2.5MB)
E-Mail

An evaluation kit is available: MAX98314EVKIT

Key Features

Integrated Input Coupling Capacitors with Excellent Linearity
- f_C = 100Hz (6dB)
- f_C = 200Hz (12dB)
Low Quiescent Current
- 0.95mA at 3.7V
- 1.2mA at 5.0V
Delivers High Output Power at 10% THD+N
- 3.2W into 4Ω, V_PVDD = 5V
- 960mW into 8Ω, V_PVDD = 3.7V
Ultra-Low Noise: 19µV
Eliminates Output Filtering Requirement
- Spread Spectrum and Active Emissions Limiting
Click-and-Pop Suppression
Thermal and Overcurrent Protection
Low Current Shutdown Mode
Small, Space-Saving Package

Applications/Uses

Mobile Phones
MP3 Players
Netbook Computers
Notebook Computers
Portable Audio
VoIP Phones

Key Specifications:

Speaker Amplifiers

Part Number

Class

Spkr. Amp. V_CC
(V)

Spkr. Amp. I_CC
(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)

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

MAX98314 NEW!

2.5

5.5

1.2

2.6

3.2

1.4

1.8

0.03

108

$0.52 @1k

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

Typical Application Circuit

Application Notes

Application Note 5342

Reduce EMI and Maintain High Efficiency with Class D Amplifiers in Portable Applications

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
MAX98314EWL+T			Active	WLP;9 pin;WLP; Outline Drawing:21-0539 (PDF) Land Pattern: Not Available Use pkgcode/variation: W90A0+1*	-40°C to +85°C	See data sheet

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

MAX98314EVKIT

Evaluation Kit for the MAX98314

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