Maxim > Products > Amplifiers and Comparators > MAX9718, MAX9719

MAX9718, MAX9719

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Ideal for Portable Audio Devices with Internal Speakers

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9718/MAX9719 differential input audio power amplifiers are ideal for portable audio devices with internal speakers. The differential input structure improves noise rejection and provides common-mode rejection. A bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality, power audio amplification. The MAX9718 is a single-channel amplifier while the MAX9719 is a dual-channel amplifier for stereo systems. Both devices deliver 1.4W continuous average power per channel to a 4Ω load with less than 1% THD+N while operating from a single +5V supply. The devices are available as adjustable gain amplifiers or with internally fixed gains of 0dB, 3dB, and 6dB to reduce component count.

A shutdown input disables the bias generator and amplifiers and reduces quiescent current consumption to less than 100nA. The MAX9718 shutdown input can be set as active high or active low. These devices feature Maxim's comprehensive click-and-pop suppression circuitry that reduces audible clicks and pops during startup and shutdown.

The MAX9718 is pin compatible with the LM4895, and is available in 9-bump UCSP™, 10-pin TDFN, and 10-pin µMAX® packages. The MAX9719 is available in 16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP packages. Both devices operate over the -40°C to +85°C extended temperature range.

Data Sheet

Download	Rev 7	(PDF, 856kB)
E-Mail

An evaluation kit is available: MAX9719AEVKIT MAX9718AEVKIT

Key Features

2.7V to 5.5V Single-Supply Operation
Very High -93dB PSRR at 217Hz
1.4W into 4Ω at 1% THD+N (per Channel)
Differential Input
Internal Fixed Gain to Reduce Component Count
Adjustable Gain Option (MAX9718A/H/MAX9719A)
100nA Low-Power Shutdown Mode
No Audible Clicks or Pops at Power-Up/Down
Improved Performance Pin-Compatible Upgrade to LM4895 (MAX9718D/G)
1.8V Logic Compatible

Applications/Uses

Mobile Phones
PDAs
Portable Devices

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

MAX9718

2.7

5.5

1.4

1.7

1.1

1.3

0.025

107

Yes

$0.36 @1k

MAX9719

$0.50 @1k

See All Speaker Amplifiers (41)

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

Block Diagram

Application Notes

Application Note 3498		Simple Logic-Level Translation Interfaces 1.8V Microcontrollers and 3V Peripherals
Application Note 3924		Thermal Considerations for a UCSP Package
Tutorial 4671		Improve Sensor Performance and SNR in Pulse Oximeter Designs
Tutorial 4678		Advantages of Internet Protocol (IP) Cameras and H.264 Compression for Security and Surveillance Video
Tutorial 4691		Introduction to Hearing Aids and Important Design Considerations
Tutorial 4692		Introduction to Ventilators and Ventilation Rate Measurements

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Reliability Report:	MAX9718.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

none

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
MAX9718AEBL+TG45			Active	UCSP;9 pin;2.5 mm² Outline Drawing:21-0093 (PDF) Land Pattern: Not Available Use pkgcode/variation: B9+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718AETB+			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718AETB+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718AETB-T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9718AEUB+			Active	µMAX-EP;10 pin;26 mm² Outline Drawing:21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718AEUB+T			Active	µMAX-EP;10 pin;26 mm² Outline Drawing:21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718BEBL+TG45			Active	UCSP;9 pin;2.5 mm² Outline Drawing:21-0093 (PDF) Land Pattern: Not Available Use pkgcode/variation: B9+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718BETB+			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718BETB+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718BETB-T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9718CEBL+TG45			Active	UCSP;9 pin;2.5 mm² Outline Drawing:21-0093 (PDF) Land Pattern: Not Available Use pkgcode/variation: B9+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718CETB+			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718CETB+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718CETB-T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9718DEBL+TG45			Active	UCSP;9 pin;2.5 mm² Outline Drawing:21-0093 (PDF) Land Pattern: Not Available Use pkgcode/variation: B9+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718DETB+			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718DETB+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718DETB-T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9718DEUB+			Active	µMAX-EP;10 pin;26 mm² Outline Drawing:21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9718DEUB+T			Active	µMAX-EP;10 pin;26 mm² Outline Drawing:21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9719AEBE+T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16+6*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719AEBE-T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16-6*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX9719AETE			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9719AETE+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719AETE+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719AETE-T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719BEBE+T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16+6*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719BEBE-T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16-6*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX9719BETE			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9719BETE+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9719BETE+T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719BETE-T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719CEBE+T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16+6*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719CEBE-T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16-6*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX9719CETE			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9719CETE+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719CETE+T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719CETE-T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719DEBE+T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16+6*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719DEBE-T			Active	UCSP;15 pin;4.3 mm² Outline Drawing:21-0101 (PDF) Land Pattern: Not Available Use pkgcode/variation: B16-6*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9719DETE			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9719DETE+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9719DETE+T			Active	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9719DETE-T			Active	QFN;16 pin Land Pattern: Not Available	-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

MAX9719AEVKIT	Evaluation Kit for the MAX9719A, MAX9719B, MAX9719C, and MAX9719D
MAX9718AEVKIT	Evaluation Kit for the MAX9718A, MAX9718B, MAX9718C, and MAX9718D

Products with Similar Part Numbers

MAX9719AEVKIT	Evaluation Kit for the MAX9719A, MAX9719B, MAX9719C, and MAX9719D
MAX9718AEVKIT	Evaluation Kit for the MAX9718A, MAX9718B, MAX9718C, and MAX9718D

More Information

Topmark Coding	MAX9718
New Product Press Release	[ 2003-10-29 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3050 Rev 7; 2010-05-17
This page last modified: 2011-01-05