MAX9759ETE+ Maxim Integrated Products, MAX9759ETE+ Datasheet

IC AMP AUDIO PWR 3.2W D 16TQFN

MAX9759ETE+

Manufacturer Part Number
MAX9759ETE+
Description
IC AMP AUDIO PWR 3.2W D 16TQFN
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet

Specifications of MAX9759ETE+

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
4.3W x 1 @ 3 Ohm
Voltage - Supply
3 V ~ 5.5 V
Features
Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Product
Class-D
Output Power
3.2 W
Common Mode Rejection Ratio (min)
67 dB
Thd Plus Noise
0.03 %
Operating Supply Voltage
3 V to 5.5 V
Supply Current
8.4 mA
Maximum Power Dissipation
1.8 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
5.5 V
Supply Voltage (min)
3 V
Amplifier Class
D
No. Of Channels
1
Supply Voltage Range
3V To 5.5V
Load Impedance
4ohm
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 MAX9759 mono Class D, audio power amplifier
provides Class AB amplifier audio performance with the
benefits of Class D efficiency, eliminating the need for a
heatsink and extending battery life. The MAX9759 deliv-
ers up to 3.2W of continuous power into a 4Ω load while
offering greater than 90% efficiency. Maxim’s next-gen-
eration, low-EMI modulation scheme allows the amplifi-
er to operate without an external LC filter while still
meeting FCC EMI-radiated emission levels.
The MAX9759 offers two modulation schemes: a fixed-
frequency modulation (FFM) mode and a spread-spec-
trum modulation (SSM) mode. The SSM mode flattens
the wideband spectral components, reducing EMI-radi-
ated emissions due to the modulation frequency.
Furthermore, the MAX9759 oscillator can be synchro-
nized to an external clock through the SYNC input,
allowing the switching frequency to range from
1000kHz to 1600kHz. The SYNC input and SYNC_OUT
output of the MAX9759 allow multiple Maxim Class D
amplifiers to be cascaded and frequency locked, mini-
mizing interference due to clock intermodulation. The
MAX9759 utilizes fully differential input amplifiers, a full-
bridged output, comprehensive click-and-pop suppres-
sion, and features four selectable gain settings (6dB,
12dB, 18dB, 24dB).
The MAX9759 features high 81dB PSRR, low 0.02%
THD+N, and SNR in excess of 90dB. Short-circuit and
thermal-overload protection prevents damage to the
device during a fault condition. The MAX9759 operates
from a single 5V supply, consumes 8.4mA of supply
current, and is available in a 16-pin thin QFN package
(4mm x 4mm x 0.8mm). The MAX9759 is fully specified
over the extended -40°C to +85°C temperature range.
19-3691; Rev 1; 10/05
Pin Configurations appear at end of data sheet.
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.
Cell Phones/PDAs
Notebook PCs
Portable DVD Players
Flat-Panel PC Monitors
LCD TVs
LCD Projectors
________________________________________________________________ Maxim Integrated Products
General Description
Filterless, Class D Audio Amplifier
Applications
3.2W, High-Efficiency, Low-EMI,
♦ 3.2W into 4Ω Load (THD+N = 10%)
♦ Filterless Amplifier Passes FCC Radiated
♦ 92% Efficiency
♦ High PSRR (81dB at 1kHz)
♦ Low 0.02% THD+N
♦ External Clock Synchronization for Multiple,
♦ 3.0V to 5.5V Single-Supply Operation
♦ Pin-Selectable Gain (6dB, 12dB, 18dB, 24dB)
♦ Integrated Click-and-Pop Suppression
♦ Low Quiescent Current (8.4mA)
♦ Low-Power Shutdown Mode (10µA)
♦ Mute Function
♦ Short-Circuit and Thermal-Overload Protection
♦ Available in Thermally Efficient Package
+Denotes lead-free package.
*EP = Exposed paddle.
MAX9759ETE+
DIFFERENTIAL
AUDIO INPUT
Emissions Standards with 7.6cm of Cable
Cascaded Maxim Class D Amplifiers
OUTPUT
16-Pin TQFN (4mm x 4mm x 0.8mm)
INPUT
SYNC
SYNC
PART
Simplified Block Diagram
OSCILLATOR
MAX9759
-40°C to +85°C 16 TQFN-EP*
TEMP RANGE
Ordering Information
V
DD
AND H-BRIDGE
MODULATOR
CONTROL
CONTROL
CONTROL
SHDN
MUTE
GAIN
PIN-
PACKAGE
Features
G1
G2
SHDN
MUTE
MONO SPEAKER
OUTPUT
T1644-4
CODE
PKG
1

Related parts for MAX9759ETE+

MAX9759ETE+ Summary of contents

Page 1

... Low Quiescent Current (8.4mA) ♦ Low-Power Shutdown Mode (10µA) ♦ Mute Function ♦ Short-Circuit and Thermal-Overload Protection ♦ Available in Thermally Efficient Package 16-Pin TQFN (4mm x 4mm x 0.8mm) PART MAX9759ETE+ +Denotes lead-free package. *EP = Exposed paddle. Applications DIFFERENTIAL AUDIO INPUT SYNC INPUT ...

Page 2

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier ABSOLUTE MAXIMUM RATINGS V to GND.............................................................................. PGND .........................................................................6V DD GND to PGND .......................................................-0.3V to +0.3V All Other Pins to GND.................................-0. Continuous Current Into/Out of PV /PGND/OUT+/OUT-....1.7A DD ...

Page 3

High Efficiency, Low-EMI, Filterless, ELECTRICAL CHARACTERISTICS (V = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = 0V (FFM). Gain = 12dB ( 1). Speaker load resistor ( ...

Page 4

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier ELECTRICAL CHARACTERISTICS (V = SHDN = MUTE = 3.3V, GND = PGND = 0V, SYNC = GND (FFM). Gain = 12dB ( 1). Speaker load resis ...

Page 5

Filterless, Class D Audio Amplifier = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T TOTAL HARMONIC DISTORTION PLUS NOISE ...

Page 6

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T TOTAL HARMONIC ...

Page 7

High Efficiency, Low-EMI, Filterless, = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T OUTPUT POWER vs. SUPPLY VOLTAGE ...

Page 8

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T COMMON-MODE REJECTION ...

Page 9

Filterless, Class D Audio Amplifier = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T SUPPLY CURRENT vs. SUPPLY VOLTAGE ...

Page 10

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier PIN NAME 1 V Analog Power Supply. Bypass to GND with a 1µF ceramic capacitor IN+ Noninverting Audio Input 3 IN- Inverting Audio Input 4 GND Analog Ground Active-Low Shutdown ...

Page 11

High Efficiency, Low-EMI, Filterless, V IN- V IN+ OUT- OUT+ t ON(MIN OUT+ OUT- Figure 1. MAX9759 Outputs with an Input Signal Applied Table 1. Operating Modes SYNC INPUT GND FFM with f = 1100kHz S ...

Page 12

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier V IN- V IN+ OUT- OUT+ t ON(MIN OUT+ OUT- Figure 2. MAX9759 Outputs with an Input Signal Applied (SSM Mode) External Synchronization The SYNC function allows the MAX9759 ...

Page 13

... The MAX9759 features a shutdown mode that reduces power consumption and extends battery life. Driving SHDN low places the MAX9759 in a low-power (0.1µA) shutdown mode. Drive SHDN high for normal operation. Idle Mode is a trademark of Maxim Integrated Products, Inc. ______________________________________________________________________________________ Class D Audio Amplifier ...

Page 14

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier The MAX9759 features a mute function that disables the H-bridge outputs of the switching amplifier. The mute function only affects the power amplifiers of the MAX9759; it does not shut down the ...

Page 15

High-Efficiency, Low-EMI, Filterless MAX9759 SYNC IN+ OUT+ RIGHT-CHANNEL DIFFERENTIAL AUDIO INPUT IN- SYNC_OUT MAX9759 SYNC IN+ OUT+ LEFT-CHANNEL DIFFERENTIAL AUDIO INPUT IN- SYNC_OUT MAX9759 SYNC IN+ ...

Page 16

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier 1µF 22kΩ CW 50kΩ 1µF 22kΩ Figure 10. Single-Ended Drive of MAX9759 Plus Volume Control The MAX9759 does not require an output filter for the short speaker cable. The device passes FCC ...

Page 17

High-Efficiency, Low-EMI, Filterless OUT-R 2.1 1µF AUDIO CODEC EAPD CENTER OUT OUT 1µF 1µF NOTE: SYSTEM DIAGRAM DEPICTS MAX9759 IN SSM MODE WITH f ______________________________________________________________________________________ Class D Audio Amplifier 1µF IN ...

Page 18

High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier Pin Configuration TOP VIEW SYNC_OUT 13 PGND 14 MAX9759 THIN QFN 18 ______________________________________________________________________________________ TRANSISTOR COUNT: 4219 PROCESS: BiCMOS 8 MUTE ...

Page 19

Filterless, Class D Audio Amplifier (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.) ______________________________________________________________________________________ 3.2W, High-Efficiency, Low-EMI, Package Information PACKAGE OUTLINE, 12, 16, 20, 24, ...

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 © 2005 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0 ...

Related keywords