MAX9752AEVKIT Maxim Integrated, MAX9752AEVKIT Datasheet

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MAX9752AEVKIT

Manufacturer Part Number
MAX9752AEVKIT
Description
Amplifier IC Development Tools
Manufacturer
Maxim Integrated
Series
MAX9752, MAX9753, MAX9754r
Datasheet
The MAX9752A evaluation kit (EV kit) is a fully assembled
and tested PC board that evaluates the MAX9752A as
well as the MAX9752B/MAX9752C/MAX9753/MAX9754
ICs. All of these Class D amplifiers drive stereo bridge-
tied-load (BTL) speakers and a stereo headphone. The
ICs’ high efficiency make them well suited for portable
audio applications.
The speaker amplifiers operate from a 4.5V to 5.5V DC
power supply, and deliver 2.2W continuous power into a
pair of 4Ω speakers. Three different speaker output con-
figurations are available for ease of evaluation.
The headphone amplifiers operate from a 3V to 5.5V DC
power supply, and deliver up to 63mW per channel into a
16Ω stereo headphone. When the switch on the head-
phone jack detects the insertion of a headphone, the
MAX9752A automatically enters the headphone mode
from the speaker mode.
The MAX9752A EV kit maximum gain is jumper selectable.
The EV kit features an analog volume control and an audi-
ble alert input for evaluating the MAX9752A/
MAX9752B/MAX9752C. The volume control and audible
alert input can be reconfigured to accept a second audio
source when evaluating the MAX9753, which features a 2:1
multiplexer that allows two audio sources to feed the EV kit.
19-3734; Rev 1; 8/05
*System-level requirement
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.
OPTIONAL COMPONENTS FOR CUSTOMER EVALUATION
DESIGNATION
C1, C12, C14
C4–C8, C10,
C16
C11
C2
R1
U1
C3
C9
QTY
________________________________________________________________ Maxim Integrated Products
3
1
7
1
1
1
1
1
0.1µF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
10µF ±20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J106M
1µF ±10%, 10V X5R ceramic
capacitors (0603)
TDK C1608X5R1A105K
47kΩ ±5% resistor (0603)
MAX9752AETI (28-pin TQFN-EP,
5mm x 5mm)
1000pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H102K
1µF ±10%, 10V X5R ceramic
capacitor (0603)
TDK C1608X5R1A105K
0.1µF ±10%, 25V X7R ceramic
capacitor (0603)
TDK C1608X7R1E104K
General Description
DESCRIPTION
MAX9752A Evaluation Kit
♦ 4.5V to 5.5V Single-Supply Operation
♦ Drives 2 x 2.2W into a Pair of 4Ω Speakers
♦ Drives 2 x 63mW into a 16Ω Stereo Headphone
♦ Analog Volume Control
♦ Beep Input with Glitch Filter
♦ 100nA (typ) Shutdown Current
♦ Small 28-Pin TQFN Package
♦ Fully Assembled and Tested
♦ Evaluates MAX9752A/MAX9752B/MAX9752C/
*EP = Exposed paddle.
MAX9752AEVKIT
DESIGNATION
(Also Available in 28-Pin TSSOP)
MAX9753/MAX9754 (IC Replacement Required)
C13*, C15*
C17–C30
JU1–JU4
R3–R6
L1–L5
L6–L9
T1, T2
JU5
PART
R2
J1
QTY
2
0
1
4
1
5
0
1
0
0
5
1
TEMP RANGE
Ordering Information
0°C to +70°C
100µF ±20%, 6.3V X5R ceramic
capacitors (1210)
TDK C3225X5R0J107M
Not installed, capacitors (0603)
3.5mm switched stereo jack
3-pin headers
2-pin header
100Ω at 100MHz, 50mΩ DCR, 3A
(0603) ferrite beads
TDK MPZ1608S101A
Not installed, inductors
TOKO D53LC series recommended
10kΩ thumb-wheel potentiometer
Not installed, resistors (0603)
Not installed, common-mode chokes
50VDC, 1ADC, 800Ω at 100MHz
TDK ACM4532-801-2P-X
recommended
Shunts
MAX9752A EV kit PC board
Component List
DESCRIPTION
Features
IC PACKAGE
28 TQFN-EP*
1

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MAX9752AEVKIT Summary of contents

Page 1

... Small 28-Pin TQFN Package (Also Available in 28-Pin TSSOP) ♦ Fully Assembled and Tested ♦ Evaluates MAX9752A/MAX9752B/MAX9752C/ MAX9753/MAX9754 (IC Replacement Required) Ordering Information PART TEMP RANGE MAX9752AEVKIT 0°C to +70°C *EP = Exposed paddle. DESIGNATION QTY 100µF ±20%, 6.3V X5R ceramic C13*, C15* 2 capacitors (1210) TDK C3225X5R0J107M C17– ...

Page 2

MAX9752A Evaluation Kit SUPPLIER TDK TOKO America Note: Indicate that you are using the MAX9752A EV kit when contacting these component suppliers. Recommended Equipment • One 5V, 3A power supply • Optional 3V, 1A power supply • Audio source • ...

Page 3

The speaker outputs (OUTL+/- and OUTR+/-) can be connected directly to a pair of speaker loads without any filtering. Use the OUTL+/- and OUTR+/- test points to connect the speakers directly to the EV kit outputs. This configuration is for ...

Page 4

MAX9752A Evaluation Kit Table 4. JU2 and JU3 Jumper Selection (GAIN) SHUNT POSITION JU3 JU2 (GAIN2) (GAIN1) 2-3 (Low) 2-3 (Low) 2-3 (Low) 1-2 (High) 1-2 (High) 2-3 (Low) 1-2 (High) 1-2 (High) Table 5. JU4 Jumper Selection (VOLUME) MAX9752A/MAX9752B/MAX9752C ...

Page 5

Table 7. JU2 Jumper Selection (MAX9753 GAIN) SHUNT POSITION 1-2 2-3 Table 8. JU3 Jumper Selection (MAX9753 INPUT) SHUNT POSITION PIN 23 (IN1 CONNECTED 1-2 2-3 *Replace R1 with a 0Ω resistor, and install a shunt ...

Page 6

MAX9752A Evaluation Kit Evaluating the MAX9754 Required EV Kit Modification • Replace U1 with the MAX9754 IC • Replace R1 with a 0Ω resistor • Set jumper JU4 to pins 1 and 2 • Set jumper JU3 to pins 2 ...

Page 7

HPVDD C4 1μF LEFT CHANNEL AUDIO INPUT RIGHT CHANNEL AUDIO INPUT Figure 1. MAX9752A Customer Design Schematic _______________________________________________________________________________________ MAX9752A Evaluation Kit VDD 25 HPOUTR 0.1μF 26 GND HPS 9 CPGND HPOUTL U1 MAX9752A 15 HPV DD C2 ...

Page 8

MAX9752A Evaluation Kit Figure 2. MAX9752A EV Kit Schematic 8 _______________________________________________________________________________________ ...

Page 9

Figure 3. Evaluation Circuit for the MAX9753 _______________________________________________________________________________________ MAX9752A Evaluation Kit 9 ...

Page 10

MAX9752A Evaluation Kit Figure 4. Evaluation Circuit for the MAX9754 10 ______________________________________________________________________________________ ...

Page 11

Figure 5. MAX9752A EV Kit Component Placement Guide—Component Side Figure 6. MAX9752A EV Kit PC Board Layout—Component Side ______________________________________________________________________________________ MAX9752A Evaluation Kit 11 ...

Page 12

MAX9752A Evaluation Kit Figure 7. MAX9752A EV Kit PC Board Layout—GND Layer 2 Figure 8. MAX9752A EV Kit PC Board Layout—VDD Layer 3 12 ______________________________________________________________________________________ ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2005 Maxim Integrated Products ...

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