MAX9729ETI+T Maxim Integrated Products, MAX9729ETI+T Datasheet

IC AMP AUDIO .052W STER 28TQFN

MAX9729ETI+T

Manufacturer Part Number
MAX9729ETI+T
Description
IC AMP AUDIO .052W STER 28TQFN
Manufacturer
Maxim Integrated Products
Series
DirectDrive™r
Type
Class ABr
Datasheet
1.MAX9729ETI.pdf (28 pages)

Specifications of MAX9729ETI+T

Output Type
Headphones, 2-Channel (Stereo)
Max Output Power X Channels @ Load
52mW x 2 @ 32 Ohm
Voltage - Supply
1.8 V ~ 3.6 V
Features
Bass Boost, Depop, I²C, Input Multiplexer, Short-Circuit and Thermal Protection, Shutdown, Volume Control
Mounting Type
Surface Mount
Package / Case
28-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9729 stereo DirectDrive™ headphone amplifi-
er features bass boost, volume control, an input mux,
and an I
makes the MAX9729 ideal for portable audio applica-
tions where space is at a premium and performance is
essential. The MAX9729 operates from a single 1.8V to
3.6V, and uses Maxim’s DirectDrive architecture, elimi-
nating the need for large DC-blocking capacitors. The
headphone amplifiers deliver 52mW into a 32Ω load,
feature low 0.03% THD+N, and high 90dB PSRR.
Maxim’s industry-leading click-and-pop suppression
circuitry reduces audible transients during power and
shutdown cycles.
The BassMax feature boosts the bass response of the
amplifier, improving audio reproduction for low-end
headphones. The integrated volume control features 32
discrete volume levels along with a ramping function to
ensure smooth transitions during shutdown cycles and
input selection. The MAX9729’s eight programmable
maximum gain settings allow for a wide range of input
signal levels. A 3:1 multiplexer/mixer allows the selection
and summation of multiple stereo input signal sources.
The MAX9729 also includes a dedicated BEEP input
with independent attenuation control. BassMax, volume
control, gain settings, and input selection are controlled
using the I
power, 5µA shutdown mode is controlled through an
external logic input or the serial interface.
The MAX9729 consumes only 4.8mA of supply current,
provides short-circuit and thermal-overload protection,
and is specified over the -40°C to +85°C extended tem-
perature range. The MAX9729 is available in a space-
saving 28-pin thin QFN package (5mm x 5mm x 0.8mm).
19-0857; Rev 0; 7/07
Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
2
C/SMBus™-compatible serial interface. This
2
Stereo Headphone Amplifier with BassMax,
C/SMBus-compatible serial interface. A low-
________________________________________________________________ Maxim Integrated Products
General Description
INR1
INR2
INR3
BEEP
SDA
INL1
INL2
INL3
SCL
I
2
C INTERFACE
CONTROL
MIXER
FADER
MUX
1.8V TO 3.6V
Volume Control, and Input Mux
PGA
PGA
MAX9729
CONTROL
VOLUME
♦ DirectDrive Headphone Amplifier Eliminates
♦ 3:1 Input Multiplexer with Digital-Fade Circuitry
♦ Software-Enabled Bass Boost
♦ 32-Step Integrated Volume Control
♦ Beep Input with Programmable Output Level
♦ Low Quiescent Current
♦ Industry-Leading Click-and-Pop Suppression
♦ I
♦ Short-Circuit Protection
♦ 1.8V to 3.6V Single-Supply Operation
♦ Available in Space-Saving, Thermally Efficient
Portable CD/DVD/MD
Players
Cell Phones
MP3/PMP Players
Note: This device is specified over the -40°C to +85°C operating
temperature range.
+ Denotes lead-free package.
*Last digit of slave address is pin programmable.
**EP = Exposed pad.
SMBus is a trademark of Intel Corp.
MAX9729ETI+
Bulky DC-Blocking Capacitors
28-Pin TQFN-EP (5mm x 5mm x 0.8mm)
2
Σ
Σ
C-Compatible 2-Wire Interface
PART
OUTR
OUTL
BMR
BML
Simplified Block Diagram
BassMax
BassMax
PIN-
PACKAGE
28 TQFN-EP**
Ordering Information
Automotive Rear Seat
Entertainment (RSE)
Flat-Panel TVs
ADDRESS*
Applications
101000_
SLAVE
Features
T2855-5
CODE
PKG
1

Related parts for MAX9729ETI+T

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX9729
Part Number:
MAX9729
Description:
Stereo Headphone Amplifier
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX9729.pdf (28 pages)
max9729etit
Part Number:
max9729etit
Description:
Max9729 Stereo Headphone Amplifier With Bassmax, Volume Control, And Input Mux
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX9729ETIT.pdf (28 pages)
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products

MAX9729ETI+T Summary of contents

Page 1

... INL2 INL3 INR1 INR2 INR3 BEEP ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Volume Control, and Input Mux ♦ DirectDrive Headphone Amplifier Eliminates Bulky DC-Blocking Capacitors ♦ 3:1 Input Multiplexer with Digital-Fade Circuitry ♦ ...

Page 2

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux ABSOLUTE MAXIMUM RATINGS PGND or SGND .................................-0. ................................................Internally Connected .......................................................................±0. SGND to ...

Page 3

Stereo Headphone Amplifier with BassMax, ELECTRICAL CHARACTERISTICS (3V Supply) (continued) = SHDN = 3V, PGND = SGND = 0V 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation ( ...

Page 4

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux ELECTRICAL CHARACTERISTICS (3V Supply) (continued) = SHDN = 3V, PGND = SGND = 0V 1µF, BM_ = 0V, maximum gain setting = 6dB, volume ...

Page 5

Stereo Headphone Amplifier with BassMax, ELECTRICAL CHARACTERISTICS (2.4V Supply) (continued) = SHDN = 2.4V, PGND = SGND = 0V 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation ( ...

Page 6

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux = SHDN = 3V, PGND = SGND = 0V 1µ BM_ = 0V, maximum gain setting = 3.5dB, ...

Page 7

Stereo Headphone Amplifier with BassMax, = SHDN = 3V, PGND = SGND = 0V 1µ BM_ = 0V, maximum gain setting = 3.5dB, volume attenuation setting = 0dB ...

Page 8

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux = SHDN = 3V, PGND = SGND = 0V 1µ BM_ = 0V, maximum gain setting = 3.5dB, ...

Page 9

Stereo Headphone Amplifier with BassMax, = SHDN = 3V, PGND = SGND = 0V 1µ BM_ = 0V, maximum gain setting = 3.5dB, volume attenuation setting = 0dB ...

Page 10

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux PIN NAME Right BassMax Input. Connect an external passive network between OUTR and BMR to apply bass 16 BMR boost to the right-channel output. See the BassMax Gain-Setting Components section. ...

Page 11

Stereo Headphone Amplifier with BassMax, phone, resulting in unnecessary power dissipation and possible damage to both headphone and headphone amplifier. In addition to the cost and size disadvan- tages, the DC-blocking capacitors required by conven- tional headphone amplifiers limit low-frequency ...

Page 12

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux contents of the command register are not affected when in shutdown. This allows the master device to write to the MAX9729 while in shutdown. When a shutdown is activated, either ...

Page 13

Stereo Headphone Amplifier with BassMax, The MAX9729 features a BEEP input with eight different attenuation settings (see Table 6). The BEEP input is useful for applications requiring the routing of a system alert signal to the stereo audio path. The ...

Page 14

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux S Sr SCL SDA Figure 4. START, STOP, and REPEATED START Conditions START and STOP Conditions SDA and SCL idle high when the bus is not in use. A master ...

Page 15

Stereo Headphone Amplifier with BassMax, FROM MASTER DEVICE S START CONDITION Figure 6a. Write Data Format for Writing to Register 0x00 Only FROM MAX9729 FROM MASTER DEVICE S SLAVE ADDRESS R/W START CONDITION Figure 6b. Write Data Format for Writing ...

Page 16

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux FROM MASTER DEVICE S START CONDITION Figure 7a. Read Data Format for Reading Register 0x00 Only FROM MAX9729 FROM MASTER DEVICE S SLAVE ADDRESS R/W START CONDITION Figure 7b. Read ...

Page 17

Stereo Headphone Amplifier with BassMax, Table 4. Multiplexer/Mixer Control (Register 0x00 (INL1 + INL2 + INL3 The MAX9729 features internal power-on reset (POR) circuitry that initializes the device ...

Page 18

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux Table 5a. Volume Control (Register 0x00) ATTEN FROM MAX GAIN SETTING (dB -1.7 0 ...

Page 19

Stereo Headphone Amplifier with BassMax, Table 5b. Volume Control (Register 0x00) ATTEN FROM MAX GAIN SETTING (dB -1 -3.4 0 ...

Page 20

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux Table 5c. Volume Control (Register 0x00) ATTEN FROM MAX GAIN SETTING ( -1.7 0 ...

Page 21

Stereo Headphone Amplifier with BassMax, MAX9729 VOLUME CONTROL TRANSFER FUNCTION 100 CODE (DECIMAL) Figure 8. MAX9729 Volume Control Transfer Function Table 6. Beep Level (Register ...

Page 22

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux Input-Coupling Capacitor The AC-coupling capacitor (C ) and input resistor (R IN form a highpass filter that removes any DC bias from an input signal. See the Functional Diagram/Typical Operating ...

Page 23

Stereo Headphone Amplifier with BassMax, Table 11. BassMax Pole and Zero Examples for a Gain Boost of 8.8dB (R1 = 47kΩ 22kΩ) C6 (nF) f (Hz) POLE 100 ...

Page 24

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux 24 ______________________________________________________________________________________ Functional Diagram/Typical Operating Circuit ...

Page 25

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux 10kΩ 10kΩ SDA SCL SHDN CONTROLLER BEEP_EN C IN 1μF BEEP ADD C IN 1μF INL1 C AUDIO CODEC IN 1μF INR1 C IN 1μF INL2 C BASEBAND IC IN ...

Page 26

Stereo Headphone Amplifier with BassMax, Volume Control, and Input Mux TOP VIEW 26 ______________________________________________________________________________________ N. BEEP INL1 25 MAX9729 26 INL2 27 INL3 + INR1 ...

Page 27

Stereo Headphone Amplifier with BassMax, (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Volume Control, and Input Mux Package Information PACKAGE OUTLINE, 16, 20, ...

Page 28

... 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. 28 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

Related keywords