max9700beub Maxim Integrated Products, Inc., max9700beub Datasheet

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max9700beub

Manufacturer Part Number
max9700beub
Description
1.2w, Low-emi, Filterless, Class D Audio Amplifier
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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Part Number:
MAX9700BEUB
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX9700 mono class D audio power amplifier pro-
vides class AB amplifier performance with class D effi-
ciency, conserving board space and extending battery
life. Using a class D architecture, the MAX9700 delivers
1.2W into an 8
90%. A patented, low-EMI modulation scheme renders
the traditional class D output filter unnecessary.
The MAX9700 offers two modulation schemes: a fixed-
frequency (FFM) mode, and a spread-spectrum (SSM)
mode that reduces EMI-radiated emissions due to the
modulation frequency. Furthermore, the MAX9700 oscil-
lator can be synchronized to an external clock through
the SYNC input, allowing the switching frequency to be
user defined. The SYNC input also allows multiple
MAX9700s to be cascaded and frequency locked, mini-
mizing interference due to clock intermodulation. The
device utilizes a fully differential architecture, a full-
bridged output, and comprehensive click-and-pop sup-
pression. The gain of the MAX9700 is set internally
(MAX9700A: 6dB, MAX9700B: 12dB, MAX9700C:
15.6dB, MAX9700D: 20dB), further reducing external
component count.
The MAX9700 features high 72dB PSRR, a low 0.01%
THD+N, and SNR in excess of 90dB. Short-circuit and
thermal-overload protection prevent the device from
damage during a fault condition. The MAX9700 is avail-
able in 10-pin TDFN (3mm
µMAX, and 12-bump UCSP™ (1.5mm
packages. The MAX9700 is specified over the extended
-40°C to +85°C temperature range.
19-3030; Rev 1; 6/04
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
PDAs
DIFFERENTIAL
AUDIO INPUT
INPUT
SYNC
load while offering efficiencies above
________________________________________________________________ Maxim Integrated Products
OSCILLATOR
General Description
V
DD
3mm
Block Diagram
AND H-BRIDGE
MP3 Players
Portable Audio
MODULATOR
MAX9700
Applications
0.8mm), 10-pin
2mm
0.6mm)
1.2W, Low-EMI, Filterless,
Class D Audio Amplifier
♦ Filterless Amplifier Passes FCC Radiated
♦ Unique Spread-Spectrum Mode Offers 5dB
♦ Optional External SYNC Input
♦ Simple Master-Slave Setup for Stereo Operation
♦ 94% Efficiency
♦ 1.2W into 8
♦ Low 0.01% THD+N
♦ High PSRR (72dB at 217Hz)
♦ Integrated Click-and-Pop Suppression
♦ Low Quiescent Current (4mA)
♦ Low-Power Shutdown Mode (0.1µA)
♦ Short-Circuit and Thermal-Overload Protection
♦ Available in Thermally Efficient, Space-Saving
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
MAX9700AETB
MAX9700AEUB
MAX9700AEBC-T
MAX9700BETB
MAX9700BEUB
MAX9700BEBC-T
Pin Configurations continued at end of data sheet.
Emissions Standards with 100mm of Cable
Emissions Improvement Over Conventional
Methods
Packages
10-Pin TDFN (3mm
10-Pin µMAX
12-Bump UCSP (1.5mm
TOP VIEW
PART
SHDN
GND
V
IN+
IN-
DD
TEMP RANGE
-40
-40
-40
-40
-40
-40
1
2
3
4
5
Ordering Information
o
o
o
o
o
o
C to +85
C to +85
C to +85
C to +85
C to +85
C to +85
TDFN/ MAX
MAX9700
Pin Configurations
3mm
o
o
o
o
o
o
C
C
C
C
C
C
2mm
0.8mm)
PIN-
PACKAGE
10 TDFN
10 µMAX
12 UCSP-12
10 TDFN
10 µMAX
12 UCSP-12
10
9
8
7
6
PV
OUT-
OUT+
PGND
SYNC
0.6mm)
DD
Features
MARK
ACM
TOP
ACI
1

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max9700beub Summary of contents

Page 1

... PART MAX9700AETB 0.8mm), 10-pin ✕ MAX9700AEUB ✕ 2mm ✕ 0.6mm) MAX9700AEBC-T MAX9700BETB Applications MAX9700BEUB MAX9700BEBC-T Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. TOP VIEW MAX9700 Pin Configurations continued at end of data sheet. Features ✕ 3mm ✕ 0.8mm) ✕ ...

Page 2

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_ ........ 600mA ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) = SHDN = 3.3V, GND = PGND = 0V, SYNC = GND (FFM unless otherwise noted. Typical values are at T MIN MAX PARAMETER SYMBOL Signal-to-Noise Ratio ...

Page 4

Low-EMI, Filterless, Class D Audio Amplifier (V = 3.3V, SYNC = GND (SSM +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY + 0.1 P ...

Page 5

SYNC = GND (SSM +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION PLUS NOISE vs. COMMON-MODE VOLTAGE 3. 1kHz P = 300mW OUT DIFFERENTIAL ...

Page 6

Low-EMI, Filterless, Class D Audio Amplifier (V = 3.3V, SYNC = GND (SSM +25°C, unless otherwise noted GSM POWER-SUPPLY REJECTION V DD MAX9700 OUTPUT 2ms/div f = 217Hz INPUT LOW = 3V INPUT HIGH = ...

Page 7

SYNC = GND (SSM +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 6.0 5.5 5.0 T 4.5 4.0 3.5 3.0 2.5 3.0 SUPPLY VOLTAGE ( (B2 ...

Page 8

Low-EMI, Filterless, Class D Audio Amplifier PIN BUMP NAME TDFN/µMAX UCSP IN IN GND SHDN SYNC 7 B3 PGND 8 A4 OUT OUT- 10 ...

Page 9

V IN- V IN+ OUT- OUT+ t ON(MIN OUT+ OUT- Figure 1. MAX9700 Outputs with an Input Signal Applied Table 1. Operating Modes SYNC INPUT MODE GND FFM with f = 1100kHz S FLOAT FFM with f ...

Page 10

Low-EMI, Filterless, Class D Audio Amplifier V IN- V IN+ OUT- OUT+ t ON(MIN OUT+ OUT- Figure 2. MAX9700 Output with an Input Signal Applied (SSM Mode) the load voltage, resulting in finite ...

Page 11

FREQUENCY (MHz) Figure 3. MAX9700 EMI Spectrum The MAX9700 has a shutdown mode that reduces power consumption and extends battery life. Driving SHDN ...

Page 12

Low-EMI, Filterless, Class D Audio Amplifier the power conversion of the class D amplifier. For exam- ple, an 8mV DC offset across an 8 extra current consumption in a class AB device. In the class D case, an 8mV ...

Page 13

MAX9700 IN+ RIGHT-CHANNEL DIFFERENTIAL AUDIO INPUT IN MAX9700 IN+ LEFT-CHANNEL DIFFERENTIAL AUDIO INPUT IN- Figure 7. Master-Slave Stereo Configuration TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 V = ...

Page 14

... Figure 10b. Improved Single-Ended Drive of MAX9700 Plus Volume PART PIN- TOP PACKAGE MARK MAX9700AETB 10 TDFN ACN MAX9700AEUB 10 µMAX — MAX9700AEBC-T 12 UCSP-12 — MAX9700BETB 10 TDFN ACO MAX9700BEUB 10 µMAX — MAX9700BEBC-T 12 UCSP-12 — MAX9700CETB MAX9700CEUB MAX9700CEBC-T MAX9700DETB MAX9700DEUB MAX9700DEBC 22k IN- CW 50k MAX9700 1 F ...

Page 15

V DD 0.1 F AUX_IN OUT 2.2k OUT BIAS 2.2k MAX4063 0.1 F IN+ IN- 0.1 F CONTROLLER Pin Configurations (continued) TOP VIEW MAX9700 (BUMP SIDE DOWN SYNC OUT IN+ SHDN PGND PV B ...

Page 16

Low-EMI, 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 go to www.maxim-ic.com/packages.) 16 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 4x3 UCSP 1 F ...

Page 17

For the latest package outline information go to www.maxim-ic.com/packages.) D PIN 1 INDEX AREA NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY ______________________________________________________________________________________ 1.2W, Low-EMI, Filterless, ...

Page 18

Low-EMI, 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 go to www.maxim-ic.com/packages.) COMMON DIMENSIONS SYMBOL MIN. MAX. A 0.70 0.80 D 2.90 ...

Page 19

For the latest package outline information go to www.maxim-ic.com/packages 0.50±0.1 0.6±0.1 1 0.6±0.1 TOP VIEW FRONT VIEW Maxim cannot ...

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