MAX9701ETG+ Maxim Integrated Products, MAX9701ETG+ Datasheet

IC AMP AUDIO PWR 2.2W D 24TQFN

MAX9701ETG+

Manufacturer Part Number
MAX9701ETG+
Description
IC AMP AUDIO PWR 2.2W D 24TQFN
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet
1.MAX9701EBPTG45.pdf (22 pages)

Specifications of MAX9701ETG+

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
2.2W x 2 @ 4 Ohm
Voltage - Supply
2.5 V ~ 5.5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
24-TQFN Exposed Pad
Product
Class-D
Output Power
1.3 W
Common Mode Rejection Ratio (min)
66 dB
Thd Plus Noise
0.1 %
Supply Current
6.3 mA
Maximum Power Dissipation
1666.7 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Audio Load Resistance
8 Ohms
Minimum Operating Temperature
- 40 C
Amplifier Class
D
No. Of Channels
2
Supply Voltage Range
2.5V To 5.5V
Load Impedance
8ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TQFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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 3; 3/09
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 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
♦ Spread-Spectrum Modulation Lowers Radiated
♦ 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(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
MAX9701EBP+TG45
MAX9701ETG+
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+
INR-
INL+
INL-
Power Amplifier
OSCILLATOR
GAIN
L
Ordering Information
= 8Ω, P
MAX9701
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
V
DD
AND H-BRIDGE
AND H-BRIDGE
DD
MODULATOR
MODULATOR
OUT
RIGHT
LEFT
Block Diagram
= 5V, THD+N = 1%)
= 1000mW)
PIN-PACKAGE
20 UCSP
24 TQFN-EP*
SYNC_OUT
Features
1

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MAX9701ETG+ Summary of contents

Page 1

... Typical Low-Power Shutdown Mode (0.1µA) ♦ Short-Circuit and Thermal-Overload Protection ♦ Available in Thermally Efficient, Space-Saving Packages 24-Pin Thin QFN-EP (4mm x 4mm x 0.8mm) 20-Bump UCSP (2mm x 2.5mm x 0.6mm) PART MAX9701EBP+TG45 MAX9701ETG+ + Denotes lead(Pb)-free/RoHS-compliant package Exposed pad. Applications Power Amplifier Features = 5V, THD 8Ω ...

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 ∞, T ...

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 R1 20kΩ R2 20kΩ 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 ...

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 ON ...

Page 19

Filterless, Stereo Class D Audio For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix ...

Page 20

Filterless, Stereo Class D Audio Power Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a ...

Page 21

Filterless, Stereo Class D Audio For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix ...

Page 22

... 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. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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