max9701etgt Maxim Integrated Products, Inc., max9701etgt Datasheet

max9701etgt

Manufacturer Part Number

max9701etgt

Description

Max9701 1.3w, Filterless, Stereo Class D Audio Power Amplifier

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX9701ETGT.pdf (20 pages)

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The MAX9701 stereo Class D audio power amplifier pro-

vides Class AB amplifier audio performance with the

benefits of Class D efficiency, eliminating the need for a

heatsink while extending battery life. The MAX9701

delivers up to 1.3W per channel into an 8Ω load while

offering 87% efficiency. Maxim’s next-generation, low-

EMI modulation scheme allows the amplifier to operate

without an external LC filter while still meeting FCC EMI

emission levels.

The MAX9701 offers two modulation schemes: a fixed-fre-

quency (FFM) mode, and a spread-spectrum (SSM)

mode that reduces EMI-radiated emissions. The

MAX9701 oscillator can be synchronized to an external

clock through the SYNC input, allowing synchronization of

multiple Maxim Class D amplifiers. The sync output

(SYNC_OUT) can be used for a master-slave application

where more channels are required. The MAX9701 fea-

tures a fully differential architecture, a full bridge-tied load

(BTL) output, and comprehensive click-and-pop suppres-

sion. The device features internally set gains of 0dB, 6dB,

12dB, and 18dB selected through two gain-select inputs,

further reducing external component count.

The MAX9701 features high 80dB PSRR, less than 0.1%

THD+N, and SNR in excess of 88dB. Short-circuit and

thermal-overload protection prevent the device from

being damaged during a fault condition. The MAX9701 is

available in 24-pin thin QFN-EP (4mm x 4mm x 0.8mm),

and 20-bump UCSP™ (2mm x 2.5mm x 0.6mm) pack-

ages. The MAX9701 is specified over the extended

-40°C to +85°C temperature range.

19-3457; Rev 2; 2/07

Pin Configurations appear at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Cellular Phones

Notebooks

Handheld Gaming Consoles

Docking Stations

MP3 Players

________________________________________________________________ Maxim Integrated Products

General Description

1.3W, Filterless, Stereo Class D Audio

Applications

♦ Patented Spread-Spectrum Modulation Lowers

♦ Single-Supply Operation (2.5V to 5.5V)

♦ 1.3W Stereo Output (8Ω, V

♦ No LC Output Filter Required

♦ 87% Efficiency (R

♦ Less Than 0.1% THD+N

♦ High 80dB PSRR

♦ Fully Differential Inputs

♦ Integrated Click-and-Pop Suppression

♦ Typical Low Quiescent Current (9mA)

♦ Typical Low-Power Shutdown Mode (0.1µA)

♦ Short-Circuit and Thermal-Overload Protection

♦ Available in Thermally Efficient, Space-Saving

+Denotes lead-free package.

*EP = Exposed paddle.

MAX9701EBP-T

MAX9701ETG+

Radiated Emissions

Packages

24-Pin Thin QFN-EP (4mm x 4mm x 0.8mm)

20-Bump UCSP (2mm x 2.5mm x 0.6mm)

PART

GAIN1

GAIN2

SYNC

INR+

INL+

INR-

INL-

Power Amplifier

-40°C to +85°C 20 UCSP-20

-40°C to +85°C 24 TQFN-EP*

TEMP RANGE

OSCILLATOR

GAIN

Ordering Information

MAX9701

= 8Ω, P

AND H-BRIDGE

MODULATOR

OUT

RIGHT

LEFT

Block Diagram

PIN-

PACKAGE

= 5V, THD+N = 1%)

= 1000mW)

SYNC_OUT

Features

T2444-4

CODE

B20-1

PKG

Related parts for max9701etgt

max9701etgt Summary of contents

Page 1

... Handheld Gaming Consoles Docking Stations MP3 Players Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ...

Page 2

Filterless, Stereo Class D Audio Power Amplifier ABSOLUTE MAXIMUM RATINGS V to GND.............................................................................. ..........................................................-0.3V to +0. PGND .........................................................................6V DD GND to PGND .......................................................-0.3V to +0.3V All Other Pins to GND.................................-0.3V to ...

Page 3

Filterless, Stereo Class D Audio ELECTRICAL CHARACTERISTICS (continued) = SHDN = 3.3V, GND = PGND = 0V, SYNC = 0V (FFM), gain = 6dB (GAIN1 = 0, GAIN2 = 1 OUT+ and OUT-, ...

Page 4

Filterless, Stereo Class D Audio Power Amplifier = SHDN = 3.3V, GND = PGND = 0V, SYNC = TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 4Ω ...

Page 5

Filterless, Stereo Class D Audio = SHDN = 3.3V, GND = PGND = 0V, SYNC = TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 8Ω L ...

Page 6

Filterless, Stereo Class D Audio Power Amplifier = SHDN = 3.3V, GND = PGND = 0V, SYNC = CROSSTALK vs. FREQUENCY - 300mW OUT - 8Ω L -50 -60 ...

Page 7

Filterless, Stereo Class D Audio = SHDN = 3.3V, GND = PGND = 0V, SYNC = WIDEBAND OUTPUT SPECTRUM (FFM MODE) 0 RBW = 10kHz -10 INPUT AC GROUNDED -20 -30 -40 -50 ...

Page 8

Filterless, Stereo Class D Audio Power Amplifier PIN NAME TQFN UCSP SHDN SYNC 3, 8, 11, 16 — N. OUTL A4 B4, C4 PGND 7 A5 ...

Page 9

Filterless, Stereo Class D Audio V DD 10µ OSCILLATOR SYNC AND SAWTOOTH V 470nF BIAS R IN INL+ 470nF R IN INL- 470nF R IN INR+ 470nF R IN INR- V BIAS GAIN1 GAIN GAIN2 CONTROL SHDN ...

Page 10

Filterless, Stereo Class D Audio Power Amplifier V IN- V IN+ OUT- OUT+ t ON(MIN OUT+ OUT- Figure 1. MAX9701 Outputs with an Input Signal Applied Detailed Description The MAX9701 filterless, stereo Class D audio power ...

Page 11

Filterless, Stereo Class D Audio V IN_- V IN_+ OUT_- OUT_+ t ON(MIN OUT_+ OUT_- Figure 2. MAX9701 Outputs with an Input Signal Applied (SSM Mode) Operating Modes Fixed-Frequency (FFM) Mode The MAX9701 features two fixed-frequency ...

Page 12

Filterless, Stereo Class D Audio Power Amplifier 50.0 45.0 40.0 35.0 30.0 25.0 20.0 15.0 10.0 5.0 0 100 120 140 160 180 FREQUENCY (MHz) Figure 3. MAX9701 with 76mm of Speaker Cable with TDK Common-Mode ...

Page 13

Filterless, Stereo Class D Audio EFFICIENCY vs. OUTPUT POWER 100 MAX9701 CLASS 0.1 0.2 0.3 OUTPUT POWER (W) Figure 5. MAX9701 Efficiency vs. Class AB Efficiency The ...

Page 14

Filterless, Stereo Class D Audio Power Amplifier 0.47µF SINGLE-ENDED INL+ LEFT AUDIO INPUT 0.47µF SINGLE-ENDED INR+ RIGHT AUDIO INPUT MAX9701 INL- 0.47µF INR- 0.47µF GAIN2 SHDN 2. 10µF 0.1µF FFM MODE WITH f ...

Page 15

Filterless, Stereo Class D Audio NOTE: VALUES SHOWN ARE FOR A LOWPASS CUTOFF OF 2Hz AND A BASS GAIN OF -1V/V. FFM MODE WITH f = 1100kHz. OSC Figure 8. 2.1 Channel Application Circuit in portable devices typically have ...

Page 16

Filterless, Stereo Class D Audio Power Amplifier Low frequencies are summed through a two-pole low- pass filter and sent to the MAX9700 mono speaker amplifier. The passband gain of the lowpass filter is unity for in-phase stereo signals, − ...

Page 17

Filterless, Stereo Class D Audio 0.1µF AUX_IN V CC 2.2kΩ MAX4060 BIAS OUT CODEC 2.2kΩ 0.1µF IN+ IN- GND 0.1µF µCONTROLLER ______________________________________________________________________________________ Power Amplifier System Diagram V DD 10µF 0.1µF 0.1µ 470nF INR+ MAX9701 OUTR+ ...

Page 18

Filterless, Stereo Class D Audio Power Amplifier TOP VIEW INR- 19 INR MAX9701 GND 22 INL+ 23 INL TQFN 18 ______________________________________________________________________________________ TOP VIEW (BUMPS ...

Page 19

Filterless, Stereo Class D Audio (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) MAX9701 Package Code: T2444-4 ______________________________________________________________________________________ Power Amplifier Package Information PACKAGE OUTLINE, ...

Page 20

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc. ...

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