MAX9722AETE+ Maxim Integrated Products, MAX9722AETE+ Datasheet

IC AMP AUDIO .13W STER AB 16TQFN

MAX9722AETE+

Manufacturer Part Number
MAX9722AETE+
Description
IC AMP AUDIO .13W STER AB 16TQFN
Manufacturer
Maxim Integrated Products
Series
DirectDrive™r
Type
Class ABr
Datasheet
1.MAX9722AETET.pdf (21 pages)

Specifications of MAX9722AETE+

Output Type
Headphones, 2-Channel (Stereo)
Max Output Power X Channels @ Load
130mW x 2 @ 32 Ohm
Voltage - Supply
2.4 V ~ 5.5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Product
General Purpose Audio Amplifiers
Output Power
130 mW
Common Mode Rejection Ratio (min)
- 70 dB
Thd Plus Noise
0.009 %
Supply Current
5.5 mA
Maximum Power Dissipation
1176 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Audio Load Resistance
16 Ohms
Input Offset Voltage
0.5 mV
Minimum Operating Temperature
- 40 C
Amplifier Class
AB
No. Of Channels
2
Supply Voltage Range
2.4V To 5.5V
Load Impedance
32ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TQFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9722A/MAX9722B stereo headphone amplifiers
are designed for portable equipment where board space
is at a premium. The MAX9722A/MAX9722B use a
unique DirectDrive architecture to produce a ground-ref-
erenced output from a single supply, eliminating the
need for large DC-blocking capacitors, which saves
cost, board space, and component height. Additionally,
the
(-2V/V, MAX9722B) or adjusted externally (MAX9722A).
The MAX9722A/MAX9722B deliver up to 70mW per
channel into a 16Ω load or 130mW into a 32Ω load and
have low 0.009% THD+N. An 80dB at 217Hz power-sup-
ply rejection ratio (PSRR) allows these devices to operate
from noisy digital supplies without an additional linear
regulator. The MAX9722A/MAX9722B include ±8kV ESD
protection on the headphone outputs. Comprehensive
anticlick-and-pop circuitry suppresses audible clicks
and pops on startup and shutdown. A low-power shut-
down mode reduces the supply current to 0.1µA.
The MAX9722A/MAX9722B operate from a single 2.4V
to 5.5V supply, consume only 5.5mA of supply current,
feature short-circuit and thermal-overload protection,
and are specified over the extended -40°C to +85°C
temperature range. The devices are available in tiny
16-pin thin QFN (3mm
TSSOP packages.
19-3049; Rev 2; 10/07
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
*EP = Exposed paddle.
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.
MAX9722AETE
MAX9722AEUE
MAX9722BETE
MAX9722BEUE
Notebook and
Desktop PCs
MP3 Players
Flat-Panel Monitors
Cellular Phones
PART
gain
Stereo Headphone Amplifiers with Shutdown
of
5V, Differential Input, DirectDrive, 130mW
the
PIN-PACKAGE
16 Thin QFN-EP* (3mm
✕
16 TSSOP
16 Thin QFN-EP* (3mm
✕
16 TSSOP
________________________________________________________________ Maxim Integrated Products
3mm
3mm
Ordering Information
amplifier
General Description
✕
✕
✕
0.8mm)
0.8mm)
3mm
✕
Smart Phones
PDAs
Portable Audio
Equipment
0.8mm) and 16-pin
is
Applications
set
MARK
TOP
AAX
AAY
—
—
internally
T1633-5
T1633-5
CODE
U16-1
U16-1
PKG
♦ 2.4V to 5.5V Single-Supply Operation
♦ High PSRR (80dB at 217Hz) Eliminates LDO
♦ No Bulky DC-Blocking Capacitors Required
♦ Ground-Referenced Outputs Eliminate DC Bias
♦ No Degradation of Low-Frequency Response Due
♦ Differential Inputs for Enhanced Noise
♦ Adjustable Gain (MAX9722A) or Fixed -2V/V Gain
♦ 130mW per Channel into 32Ω
♦ Low 0.009% THD+N
♦ Integrated Click-and-Pop Suppression
♦ Low Quiescent Current (5.5mA)
♦ Short-Circuit and Thermal-Overload Protection
♦ ±8kV ESD-Protected Amplifier Outputs (Human
♦ Available in a Space-Saving 16-Pin Thin QFN
Pin Configurations and Typical Application Circuit appear at
end of data sheet.
Voltage on Headphone Ground Pin
to Output Capacitors
Cancellation
(MAX9722B)
Body Model)
(3mm
AUDIO
AUDIO
INPUT
SHDN
RIGHT
INPUT
LEFT
✕
3mm
✕
0.8mm) Package
Simplified Diagram
MAX9722B
ELIMINATE DC-BLOCKING
FIXED GAIN ELIMINATES
DirectDrive OUTPUTS
EXTERNAL RESISTOR
Features
CAPACITORS.
NETWORK.
1

Related parts for MAX9722AETE+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX9722B
Part Number:
MAX9722B
Description:
(MAX9722A/B) 130mW Stereo Headphone Amplifiers
Manufacturer:
Maxim Integrated Products
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
MAX2831EVKIT+
Part Number:
MAX2831EVKIT+
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products

MAX9722AETE+ Summary of contents

Page 1

... TSSOP Note: All devices are specified over the -40°C to +85°C operating temperature range. *EP = Exposed paddle. ________________________________________________________________ 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. ♦ 2.4V to 5.5V Single-Supply Operation ♦ ...

Page 2

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown ABSOLUTE MAXIMUM RATINGS PGND to SGND .....................................................-0.3V to +0.3V PV and SV to PGND or SGND .........................-0. and SV to PGND..........................................+0. ...

Page 3

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown ELECTRICAL CHARACTERISTICS (continued) = +5V, PGND = SGND = 0V, SHDN = SV ( MAX9722A gain = -1V 10kΩ), for MAX9722B gain ...

Page 4

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown = +5V, PGND = SGND = 0V, SHDN = SV (MAX9722A THD+N measurement bandwidth = 22Hz to 22kHz, T TOTAL HARMONIC DISTORTION PLUS NOISE vs. ...

Page 5

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown = +5V, PGND = SGND = 0V, SHDN = SV (MAX9722A THD+N measurement bandwidth = 22Hz to 22kHz, T TOTAL HARMONIC DISTORTION PLUS NOISE vs. ...

Page 6

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown = +5V, PGND = SGND = 0V, SHDN = SV (MAX9722A THD+N measurement bandwidth = 22Hz to 22kHz, T POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 0 ...

Page 7

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown = +5V, PGND = SGND = 0V, SHDN = SV (MAX9722A THD+N measurement bandwidth = 22Hz to 22kHz, T EXIT SHUTDOWN TRANSIENT MAX9722 toc31 SHDN ...

Page 8

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown Detailed Description The MAX9722A/MAX9722B stereo headphone amplifiers feature Maxim’s DirectDrive architecture, eliminating the large output-coupling capacitors required by conven- tional single-supply headphone amplifiers. The devices consist of two class AB ...

Page 9

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown Conventional single-supply headphone amplifiers have their outputs biased about a nominal DC voltage (typi- cally half the supply) for maximum dynamic range. Large coupling capacitors are needed to block this ...

Page 10

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown LOW-FREQUENCY ROLLOFF (R = 16Ω DirectDrive -6 -9 330μF -12 220μF -15 100μF -18 33μF -21 -24 -27 -30 10 100 1k FREQUENCY (Hz) Figure 4. Low-Frequency ...

Page 11

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown The MAX9722A/MAX9722B feature shutdown control allowing audio signals to be shut down or muted. Driving SHDN low disables the amplifiers and the charge pump, sets the amplifier output impedance to ...

Page 12

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown Component Selection The input capacitor ( conjunction with the input IN resistor (R ), forms a highpass filter that removes the DC IN bias from an incoming signal ...

Page 13

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown MAX9722A LEFT AUDIO INPUT SHDN RIGHT AUDIO INPUT Figure 8. Common-Mode Sense Input Eliminates Ground-Loop Noise EXAMPLE CONNECTION: V IMPROVEMENT FROM ADDING MAX9722 WITH SERIES RESISTANCE V AUDIO Figure 9. ...

Page 14

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown such as the headphone socket used as a line output to a home hi-fi system. In the upper diagram, any differ- ence between the two GND references (represented by V ...

Page 15

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY -1V OUT(P-P) 1 OUTPUTS DRIVING PIEZOELECTRIC SPEAKER 0.1 0.01 0.001 0.0001 10 ...

Page 16

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown 0.1μF AUX_IN MAX4060 BIAS 2.2kΩ 0.1μF IN+ IN- 0.1μF The thin QFN package features an exposed paddle that improves thermal efficiency of the package. The MAX9722A/MAX9722B do not require additional ...

Page 17

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown 2.4V TO 5.5V C3 1μ (11, 15) ( SHUTDOWN (4) CONTROL C1P CHARGE C1 PUMP 1μF 4 (6) C1N PV SV PGND ...

Page 18

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown TOP VIEW INL+ 1 SHDN MAX9722A 4 C1P MAX9722B PGND 5 C1N SGND 8 TSSOP Chip Information TRANSISTOR COUNT: 1100 PROCESS: BiCMOS ...

Page 19

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown (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.) ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, TSSOP 4.40mm ...

Page 20

Differential Input, DirectDrive, 130mW Stereo Headphone Amplifiers with Shutdown (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.) E MARKING E/2 AAAA D ...

Page 21

... 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 ____________________ 21 © 2007 Maxim Integrated Products ...

Related keywords