max9718aeubt Maxim Integrated Products, Inc., max9718aeubt Datasheet

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max9718aeubt

Manufacturer Part Number
max9718aeubt
Description
Low-cost, Mono/stereo, 1.4w Differential Audio Power Amplifiers
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX9718AEUBT.pdf (24 pages)
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 mini-
mizes 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 fea-
ture Maxim’s comprehensive click-and-pop suppres-
sion 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
16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack-
ages. Both devices operate over the -40°C to +85°C
extended temperature range.
19-3050; Rev 5; 2/08
For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Mobile Phones
PDAs
Portable Devices
®
packages. The MAX9719 is available in
1.4W Differential Audio Power Amplifiers
________________________________________________________________ Maxim Integrated Products
SHDM
SHDN
IN+
IN-
General Description
SINGLE SUPPLY
2.7V TO 5.5V
MAX9718
Applications
OUT+
OUT-
Low-Cost, Mono/Stereo,
♦ 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
♦ 1.8V Logic Compatible
+Denotes lead-free package.
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX9718AEBL-T
MAX9718AEBL+T -40°C to +85°C
MAX9718AETB-T
to LM4895 (MAX9718D/G)
SHDN
INL+
INR+
INL-
INR-
PART
Simplified Block Diagrams
SINGLE SUPPLY
2.7V TO 5.5V
-40°C to +85°C
-40°C to +85°C
MAX9719
TEMP RANGE
Ordering Information
OUTL+
OUTL-
OUTR+
OUTR-
PIN-
PACKAGE
3 x 3 UCSP
3 x 3 UCSP
10 TDFN-EP*
Features
MARK
+ADX
TOP
ADX
AAV
1

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max9718aeubt Summary of contents

Page 1

... MAX9718AETB-T +Denotes lead-free package. *EP = Exposed paddle. Ordering Information continued at end of data sheet. Applications Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. µMAX is a registered trademark of Maxim Integrated Products, Inc. INL+ OUT+ INL- INR+ OUT- INR- MAX9718 ...

Page 2

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to GND) ..................................-0.3V to +6V CC Any Other Pin to GND ...............................-0. IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA OUT_ Short-Circuit Duration to GND ...

Page 3

Differential Audio Power Amplifiers ELECTRICAL CHARACTERISTICS—5V Supply (continued 5V, GND = 0, SHDN/SHDN = +25° 0.1µF, no load. Typical values are BIAS PARAMETER SYMBOL Gain Accuracy Channel-to-Channel Gain ...

Page 4

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ELECTRICAL CHARACTERISTICS—3V Supply (continued 3V, GND = 0, SHDN/SHDN = +25° 0.1µF, no load. Typical values are BIAS PARAMETER SYMBOL Output Power ...

Page 5

Differential Audio Power Amplifiers ( 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T BIAS CC TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 8Ω ...

Page 6

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ( 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz BIAS TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 4Ω L ...

Page 7

Differential Audio Power Amplifiers ( 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T BIAS CC OUTPUT POWER vs. LOAD RESISTANCE 600 1kHz 500 THD+N ...

Page 8

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ( 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz BIAS CROSSTALK vs. FREQUENCY - 200mV RIPPLE P-P - ...

Page 9

Differential Audio Power Amplifiers ( 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T BIAS CC SUPPLY CURRENT vs. TEMPERATURE ...

Page 10

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers PIN MAX9718 MAX9719 TDFN/ UCSP TQFN UCSP µMAX — — — — — — — EP — Detailed Description The MAX9718/MAX9719 are 1.4W BTL speaker ampli- ...

Page 11

Differential Audio Power Amplifiers +1 -1 Figure 1. Bridge-Tied Load Configuration Power Dissipation and Heat Sinking Under normal operating conditions, the MAX9718/ MAX9719 dissipate a significant amount of power. The maximum power dissipation for each package is given in ...

Page 12

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers The fully differential amplifier inputs can be biased at voltages other than midsupply. The common-mode feedback circuit adjusts for input bias, ensuring the outputs are still biased at midsupply. Input capacitors are not ...

Page 13

Differential Audio Power Amplifiers PIN- PART TEMP RANGE PACKAGE MAX9718AETB+T -40°C to +85°C 10 TDFN-EP* MAX9718AEUB -40°C to +85°C 10 µMAX-EP* MAX9718AEUB+ -40°C to +85°C 10 µMAX-EP* MAX9718BEBL-T -40°C to +85° UCSP MAX9718BEBL+T -40°C to +85°C ...

Page 14

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 10µF IN1+ IN1- IN2+ IN2- 2.7V TO 5.5V 1µF 14 ______________________________________________________________________________________ 2.7V TO 5.5V 1µ MAX9719 INL+ OUTL+ OUTL- INL- INR+ OUTR+ INR- OUTR- GND BIAS SHDN IN- Q MAX961 V ...

Page 15

Differential Audio Power Amplifiers 2.7V TO 5.5V SUPPLY V CC 1.0µ INVERTING IN- DIFFERENTIAL INPUT (OPTIONAL NONINVERTING IN+ DIFFERENTIAL INPUT (OPTIONAL) BIAS GENERATOR C BIAS 0.1µF SHDN SHUTDOWN SHDM GND 2.7V TO 5.5V SUPPLY 1.0µF ...

Page 16

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers INVERTING DIFFERENTIAL INPUT (OPTIONAL) NONINVERTING DIFFERENTIAL INPUT (OPTIONAL) INVERTING DIFFERENTIAL INPUT (OPTIONAL) NONINVERTING DIFFERENTIAL INPUT (OPTIONAL) INVERTING DIFFERENTIAL INPUT (OPTIONAL) NONINVERTING DIFFERENTIAL INPUT (OPTIONAL) INVERTING DIFFERENTIAL INPUT (OPTIONAL) NONINVERTING DIFFERENTIAL MAX9719A INPUT A ...

Page 17

Differential Audio Power Amplifiers TOP VIEW SHDN SHDM 3 8 MAX9718 IN BIAS 5 6 µMAX TOP VIEW SHDN SHDM 3 8 MAX9718 IN BIAS ...

Page 18

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 18 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 3x3 UCSP 1 21-0093 ...

Page 19

Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) COMMON DIMENSIONS SYMBOL MIN. MAX. A 0.70 0.80 D 2.90 3.10 E ...

Page 20

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 20 ______________________________________________________________________________________ Package Information (continued) 21-0109 ...

Page 21

Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Low-Cost, Mono/Stereo, Package Information (continued) PACKAGE OUTLINE, 4x4 UCSP 21-0101 1 ...

Page 22

Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 22 ______________________________________________________________________________________ Package Information (continued) ...

Page 23

Differential Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages ______________________________________________________________________________________ Low-Cost, Mono/Stereo, Package Information (continued) 23 ...

Page 24

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products Revision History DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc. PAGES CHANGED — 10, 11, 13– 1– ...

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