MAX9770EVKIT Maxim Integrated, MAX9770EVKIT Datasheet

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MAX9770EVKIT

Manufacturer Part Number
MAX9770EVKIT
Description
Audio IC Development Tools Programmers, Development Systems
Manufacturer
Maxim Integrated
Series
MAX9770r
Datasheet

Specifications of MAX9770EVKIT

Factory Pack Quantity
1
The MAX9770 evaluation kit (EV kit) is a fully assembled
and tested circuit board that uses the MAX9770, a low-
EMI, filterless class D, bridge-tied-load (BTL) speaker
amplifier with an 80mW stereo DirectDrive™ head-
phone amplifier. Designed to operate from a 2.5V to
5.5V power supply, the EV kit is capable of delivering
1.2W into an 8Ω load with efficiency up to 85%.
19-3296; Rev 1; 2/05
*Package code is T2855N-1.
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.
MAX9770EVKIT
DESIGNATION
C2, C4–C7
C8–C11
PART
C12
C13
C1
C3
QTY
________________________________________________________________ Maxim Integrated Products
1
5
1
4
1
1
TEMP RANGE
0°C to +70°C
Ordering Information
10µF ±20%, 6.3V X5R ceramic
capacitor (0805)
Taiyo Yuden JMK212BJ106MG or
TDK C2012X5R0J106M
1µF ±10%, 10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
0.047µF ±10%, 25V X7R ceramic
capacitor (0603)
TDK C1608X7R1E473K
0.47µF ±10%, 10V X5R ceramic
capacitors (0603)
Taiyo Yuden LMK107BJ474KA or
TDK C1608X5R1A474K
0.1µF ±10%, 25V X7R ceramic
capacitor (0603)
Murata GRM188R71E104J or
TDK C1608X7R1E104K
100pF ±5%, 50V C0G ceramic
capacitor (0402)
Murata GRP1555C1H101J or
Taiyo Yuden UMK105CG101JW
General Description
DESCRIPTION
IC PACKAGE
28 TQFN*
MAX9770 Evaluation Kit
♦ Filterless Operation Class D Amplifier Passes
♦ 2.5V to 5.5V Single-Supply Operation
♦ 0.1µA (typ) IC Shutdown Current
♦ Drives 1.2W into 8Ω Speaker
♦ Drives 80mW into 16Ω Headphone
♦ Low 0.015% THD+N
♦ Selectable Gain Options
♦ Selectable 3-Way Input Mixer/Multiplexer
♦ Selectable Switching Frequency
♦ Also Evaluates MAX9771
♦ Surface-Mount Construction
♦ Fully Assembled and Tested
DESIGNATION
C16–C19, C21,
C14, C15, C20
HPOUTL, TP1
FCC Class B Radiated Emissions
OUT+, OUT-,
HPOUTR,
FOUT1+,
JU1–JU6
FOUT1-,
R2, R3
L1, L2
None
None
C22
JU7
JU8
R1
U1
J1
T1
QTY
0
0
0
1
6
1
1
0
1
0
0
1
8
1
Not installed, ceramic capacitors
(0402)
Not installed, ceramic capacitors
(0603)
Not installed, power inductors
3.5mm surface-mount stereo
headphone jack
3-pin headers
5-pin header
2-pin header
Not installed, test points
49.9Ω ±1% resistor (0402)
Not installed, resistors (0603)
Not installed, common-mode choke
MAX9770ETI (28-pin 5mm x 5mm
thin QFN)
Shunts
MAX9770/MAX9771 PC board
Component List
DESCRIPTION
Features
1

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MAX9770EVKIT Summary of contents

Page 1

... DirectDrive™ head- phone amplifier. Designed to operate from a 2.5V to 5.5V power supply, the EV kit is capable of delivering 1.2W into an 8Ω load with efficiency up to 85%. Ordering Information PART TEMP RANGE MAX9770EVKIT 0°C to +70°C *Package code is T2855N-1. DESIGNATION QTY DESCRIPTION 10µF ±20%, 6.3V X5R ceramic ...

Page 2

MAX9770 Evaluation Kit SUPPLIER PHONE Murata 770-436-1300 Taiyo Yuden 800-348-2496 TDK 847-803-6100 Note: Indicate that you are using the MAX9770 when contacting these component suppliers. The MAX9770 EV kit is fully assembled and tested. Follow the steps listed below to ...

Page 3

The EV kit outputs (OUT+, OUT-) can be connected directly to a speaker load without any filtering. However, a filter can be added to ease evaluation by recovering the audio signal. See Table 2 for the recom- mended filtering component ...

Page 4

MAX9770 Evaluation Kit Jumpers JU3, JU4, and JU5 control the SEL1, SEL2, and SELM pins of the MAX9770 IC. See Table 4 for JU3, JU4, and JU5 functions. Table 4. JU3, JU4, and JU5 Jumpers Selection JU3 SHUNT POSITION JU4 ...

Page 5

VDD VDD VRIN1 0.47µF 28 IN1_R C9 VRIN2 0.47µF 27 IN2_R C10 VLIN1 0.47µF 25 IN1_L C11 VLIN2 0.47µF 24 IN2_L C6 VMONO 1.0µF 23 MONO GND VDD C12 0.1µF 17 PGND 5 SV ...

Page 6

MAX9770 Evaluation Kit Figure 2. MAX9770 EV Kit Component Placement Guide— Component Side Figure 4. MAX9770 EV Kit PC Board Layout—Layer 2 (GND) 6 _______________________________________________________________________________________ Figure 3. MAX9770 EV Kit PC Board Layout—Component Side Figure 5. MAX9770 EV Kit PC ...

Page 7

... 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 _____________________ 7 © 2005 Maxim Integrated Products MAX9770 Evaluation Kit Figure 7. MAX9770 EV Kit Component Placement Guide— ...

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