MAX9722AEVKIT Maxim Integrated Products, MAX9722AEVKIT Datasheet
MAX9722AEVKIT
Manufacturer Part Number
MAX9722AEVKIT
Description
Audio Modules & Development Tools MAX9722A KIT MAX9722A KIT
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX9722AEVKIT.pdf
(4 pages)
Specifications of MAX9722AEVKIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9722A evaluation kit (EV kit) is a fully assembled
and tested circuit board that uses the MAX9722A to drive
a stereo headphone in portable audio applications. The
MAX9722A is a differential stereo headphone driver with
DirectDrive. MAXIM’s DirectDrive technology eliminates
the need for DC-blocking capacitors on the output of the
amplifier. Designed to operate from a 2.4V to 5.5V DC
power supply, the EV kit is capable of delivering up to
70mW per channel into a 16Ω load or 130mW per chan-
nel into a 32Ω load and 0.009% THD+N at 1kHz.
The EV kit can also be used as a line driver that pro-
vides 2V
The MAX9722A EV kit also evaluates the MAX9722B.
19-3311; Rev 0; 6/04
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.
DESIGNATION QTY
C6–C11
R9, R10
C1–C4
R1–R8
None
None
JU1
JU2
R11
A1
C5
U1
J1
RMS
into a 1kΩ load from a single 5V supply.
________________________________________________________________ Maxim Integrated Products
1
4
1
6
1
1
1
8
0
1
1
2
1
MAX9722AEUE (16-pin TSSOP)
1µF ±20%, 16V plastic film
capacitors (1210)
Panasonic ECPU1C105MA5
10µF ±20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J106M
1µF ±10%, 10V X5R ceramic
capacitors (0603)
TDK C1608X5R1A105K
3.5mm stereo headphone jack
3-pin header
2-pin header
10kΩ ±1% resistors (0603)
Not installed, resistors (0603)
0Ω ±5% resistor (1206)
MAX9722AETE
(16-pin TQFN, 3mm x 3mm)
Shunts
MAX9722A PC board
General Description
Component List
DESCRIPTION
MAX9722A Evaluation Kit
♦ 2.4V to 5.5V Single-Supply Operation
♦ Drives Two Channels at 70mW per Channel into a
♦ ≤2µA Shutdown Current
♦ Evaluates the MAX9722A or MAX9722B
♦ Small 16-Pin TQFN (3mm x 3mm) Package
♦ Available in 16-Pin TSSOP Package
♦ Fully Assembled and Tested
*EP = Exposed paddle.
Note: Indicate that you are using the MAX9722A when contact-
ing these component suppliers.
The MAX9722A EV kit is fully assembled and tested.
Follow the steps listed below to verify board operation.
Do not turn on the power supply until all connec-
tions are completed.
• 2.4V to 5.5V, 500mA power supply
• Audio signal source (i.e., CD or MP3 player)
• 16Ω or 32Ω headphone
1) Verify that a shunt is installed across pins 1 and 2
2) Verify that no shunt is installed across jumper JU2
3) Plug the headphone into headphone jack J1.
4) Connect the positive terminal of the power supply to
Panasonic
TDK
SUPPLIER
MAX9722AEVKIT
16Ω load, 130mW per Channel into a 32Ω load
(IC and Component Replacement Required)
of jumper JU1 (EV kit ON).
(remote GND sensing OFF).
the PVDD pad and ground terminal to the PGND pad.
PART
373-7366
803-6100
PHONE
714-
847-
Component Suppliers
TEMP RANGE
Recommended Equipment
Ordering Information
0°C to +70°C
737-7323
390-4405
FAX
714-
847-
www.panasonic.com
w w w .com p onent.td k.com
Quick Start
IC PACKAGE
16 TQFN - E P *
WEBSITE
Features
Procedure
1
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MAX9722AEVKIT Summary of contents
Page 1
... Evaluates the MAX9722A or MAX9722B (IC and Component Replacement Required) ♦ Small 16-Pin TQFN (3mm x 3mm) Package ♦ Available in 16-Pin TSSOP Package ♦ Fully Assembled and Tested Ordering Information PART TEMP RANGE MAX9722AEVKIT 0°C to +70°C *EP = Exposed paddle. Component Suppliers SUPPLIER PHONE FAX 714- ...
Page 2
MAX9722A Evaluation Kit 5) Connect the left output of the audio source to the INPUTL- pad. 6) Connect the ground of the audio source to the INPUTL+ pad. 7) Connect the right output of the audio source to the INPUTR- ...
Page 3
OPEN R10 OPEN C11 INPUTL- 1µF JU2 INPUTL+ INR+ PVDD PGND SHDN Figure 1. MAX9722A EV Kit Schematic _______________________________________________________________________________________ MAX9722A Evaluation Kit OUTR SGND R11 OUTL 0Ω 12 OUTL 10kΩ 1µF 10kΩ ...
Page 4
... 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. 4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products Figure 3. MAX9722A EV Kit PC Board Layout—Component Side Figure 5. MAX9722A EV Kit Component Placement Guide— ...