MAX9750AEVKIT Maxim Integrated, MAX9750AEVKIT Datasheet

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MAX9750AEVKIT

Manufacturer Part Number
MAX9750AEVKIT
Description
Amplifier IC Development Tools
Manufacturer
Maxim Integrated
Series
MAX9750, MAX9751, MAX9755r
Datasheet
The MAX9750A evaluation kit (EV kit) is a fully assem-
bled and tested circuit board that evaluates the
MAX9750A/B/C, MAX9751, and MAX9755. The
MAX9750A/B/C, MAX9751, and MAX9755 are class AB
amplifiers designed to drive stereo bridge-tied-load
(BTL) speakers, and a stereo headphone in portable
audio applications. The speaker amplifiers operate from
a 4.5VDC to 5.5VDC power supply, and deliver 2 x 1.4W
continuous power into a pair of 8Ω speakers. The head-
phone amplifiers operate from a 3VDC to 5.5VDC power
supply, and deliver 110mW continuous power into a 16Ω
stereo headphone.
The MAX9750A/B/C feature an analog volume control and
an audible alert input (BEEP). The MAX9750A/B/Cs’ gain
is jumper selectable. The MAX9751 features a 2:1 multi-
plexer, allowing two audio sources. The MAX9750A/B/C/
MAX9751/MAX9755 have a low shutdown supply current
of 5µA.
19-3427; Rev 0; 10/04
Note: Indicate that you are using the MAX9750AEVKIT when contacting this component supplier.
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.
TDK
DESIGNATION QTY
C1, C11, C12,
C4–C10, C16
C14
C2
C3
SUPPLIER
________________________________________________________________ Maxim Integrated Products
4
1
1
8
0.1µF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
10µF ±20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J106M
1000pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H102K
1µF ±10%, 10V X5R ceramic
capacitors (0603)
TDK C1608X5R1A105K
General Description
DESCRIPTION
847-803-6100
PHONE
MAX9750A Evaluation Kit
*EP = Exposed Paddle
MAX9750AEVKIT
DESIGNATION QTY
4.5V to 5.5V Single-Supply Operation
Drives 2 x 1.4W into a Pair of 8Ω Speakers
Drives 110mW into a 16Ω Stereo Headphone
Analog Volume Control
Beep Input with Glitch Filter
5µA Shutdown Current
Small 28-Pin TQFN Package
Fully Assembled and Tested
Evaluates MAX9750B/C/MAX9751/MAX9755
(IC Replacement Required)
C13, C15
JU1–JU4
None
None
PART
847-390-4405
JU5
R1
R2
U1
J1
FAX
2
1
4
1
1
1
1
5
1
Component Suppliers
TEMP RANGE
Ordering Information
0°C to +70°C
100µF ±20%, 6.3V X5R ceramic
capacitors (1210)
TDK C3225X5R0J107M
3.5mm switched stereo jack
3-pin headers
2-pin header
47k ±5% resistor (0603)
10k thumb-wheel potentiometer
MAX9750AETI (28-pin TQFN-EP,
5mm x 5mm)
Shunts
MAX9750A PC board
www.component.tdk.com
Component List
DESCRIPTION
WEBSITE
IC PACKAGE
28 TQFN-EP*
Features
1

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MAX9750AEVKIT Summary of contents

Page 1

... TDK C1608X5R1A105K SUPPLIER TDK Note: Indicate that you are using the MAX9750AEVKIT when contacting this component supplier. ________________________________________________________________ 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. MAX9750A Evaluation Kit 4.5V to 5.5V Single-Supply Operation Drives 2 x 1.4W into a Pair of 8Ω ...

Page 2

MAX9750A Evaluation Kit Recommended Equipment • One 5V, 2A power supply • One 3V, 1A power supply • One audio source • Two 8Ω speakers • One headphone The MAX9750A EV kit is fully assembled and tested. Follow the steps ...

Page 3

Gain Selection (MAX9750A/B/C) For the MAX9750A/B/C, jumpers JU2 and JU3 provide an option to set the maximum gain of the speakers and headphone amplifiers on the EV kit. See Table 2 for shunt positions. Analog Volume Control (MAX9750A/B/C) Jumper JU4 ...

Page 4

MAX9750A Evaluation Kit Table 6. JU3 Jumper Selection SHUNT POSITION MAX9751 PIN 23 (IN1/2) 1-2 Connected to VDD 2-3 Connected to GND *Replace R1 with a 0Ω resistor, and install shunts on pins 1 and 2 of jumper JU4. MAX9751 ...

Page 5

VDD VDD C3 GND 1000pF HPVDD HPVDD C6 1µF IN_L C7 1µF IN_R C8 1µF PC_BEEP C9 1µF INRB 1 HPVDD JU4 C11 0.1µF VDD 1 SHDN JU1 2 3 Figure 1. MAX9750A EV Kit Schematic _______________________________________________________________________________________ ...

Page 6

MAX9750A Evaluation Kit VDD VDD C3 GND 1000pF HPVDD HPVDD C6 1µF IN_L C7 1µF IN_R C8 1µF PC_BEEP C9 1µF INRB 1 HPVDD JU4 C11 2 0.1µF VDD 1 SHDN JU1 2 3 *See the Evaluating ...

Page 7

VDD C3 GND 1000pF HPVDD 1µF IN_L IN_R 1µF PC_BEEP C9 1µF INRB 1 HPVDD JU4 C11 0.1µF VDD 1 SHDN JU1 2 3 *See the Evaluating the MAX9755 section. Figure 3. Application Circuit for MAX9755 _______________________________________________________________________________________ ...

Page 8

MAX9750A Evaluation Kit Figure 4. MAX9750A EV Kit Component Placement Guide— Component Side Figure 6. MAX9750A EV Kit PC Board Layout—GND Layer 2 8 _______________________________________________________________________________________ Figure 5. MAX9750A EV Kit PC Board Layout—Component Side ...

Page 9

... 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 _____________________ 9 © 2004 Maxim Integrated Products MAX9750A Evaluation Kit Figure 8. MAX9750A EV Kit PC Board Layout— ...

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