MAX4411ETP+ Maxim Integrated Products, MAX4411ETP+ Datasheet

IC AMP AUDIO .08W STER AB 20TQFN

MAX4411ETP+

Manufacturer Part Number
MAX4411ETP+
Description
IC AMP AUDIO .08W STER AB 20TQFN
Manufacturer
Maxim Integrated Products
Series
DirectDrive™r
Type
Class ABr
Datasheet
1.MAX4411EBET.pdf (18 pages)

Specifications of MAX4411ETP+

Output Type
Headphones, 2-Channel (Stereo)
Max Output Power X Channels @ Load
80mW x 2 @ 16 Ohm
Voltage - Supply
1.8 V ~ 3.6 V
Features
Depop, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
20-TQFN Exposed Pad
Product
General Purpose Audio Amplifiers
Output Power
80 mW
Thd Plus Noise
0.007 %
Operating Supply Voltage
1.8 V to 3.6 V
Supply Current
3.2 mA
Maximum Power Dissipation
1349 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.8 V
Amplifier Class
AB
No. Of Channels
2
Supply Voltage Range
1.8V To 3.6V
Load Impedance
16ohm
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 MAX4411 fixed-gain, stereo headphone amplifier is
designed for portable equipment where board space is
at a premium. The MAX4411 uses a unique DirectDrive
architecture to produce a ground-referenced output
from a single supply, eliminating the need for large DC-
blocking capacitors, saving cost, board space, and
component height. Additionally, the gain of the
amplifier is set internally (-1.5V/V, MAX4411 and
-2V/V, MAX4411B), further reducing component count.
The MAX4411 delivers up to 80mW per channel into a
16Ω load and has low 0.003% THD+N. An 86dB at
217Hz power-supply rejection ratio (PSRR) allows this
device to operate from noisy digital supplies without an
additional linear regulator. The MAX4411 includes ±8kV
ESD protection on the headphone outputs. Com-
prehensive click-and-pop circuitry suppresses audible
clicks and pops on startup and shutdown. Independent
left/right, low-power shutdown controls make it possible
to optimize power savings in mixed-mode, mono/stereo
applications.
The MAX4411 operates from a single 1.8V to 3.6V supply,
consumes only 5mA of supply current, has short-circuit
and thermal-overload protection, and is specified over the
extended -40°C to +85°C temperature range. The
MAX4411 is available in a tiny (2mm
16-bump chip-scale package (UCSP™) and a 20-pin thin
QFN package (4mm
19-2618; Rev 2; 9/06
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.
Pin Configurations and Typical Application Circuit appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Notebook PCs
Cellular Phones
PDAs
________________________________________________________________ Maxim Integrated Products
✕
4mm
80mW, Fixed-Gain, DirectDrive, Stereo
General Description
Headphone Amplifier with Shutdown
✕
MP3 Players
Smart Phones
Portable Audio Equipment
0.8mm).
SHDNL
SHDNR
AUDIO
AUDIO
INPUT
RIGHT
INPUT
LEFT
Applications
✕
2mm
✕
0.6mm),
MAX4411
♦ No Bulky DC-Blocking Capacitors Required
♦ Fixed -1.5V/V Gain Eliminates External Feedback
♦ Ground-Referenced Outputs Eliminate DC-Bias
♦ No Degradation of Low-Frequency Response Due
♦ 80mW per Channel into 16Ω
♦ Low 0.003% THD+N
♦ High PSRR (86dB at 217Hz)
♦ Integrated Click-and-Pop Suppression
♦ 1.8V to 3.6V Single-Supply Operation
♦ Low Quiescent Current (5mA)
♦ Independent Left/Right, Low-Power
♦ Short-Circuit and Thermal-Overload Protection
♦ ±8kV ESD-Protected Amplifier Outputs
♦ Available in Space-Saving Packages
Ordering Information continued at end of data sheet.
+Denotes lead-free package.
MAX4411EBE-T
MAX4411EBE+T
MAX4411ETP
Network
Voltages on Headphone Ground Pin
to Output Capacitors
Shutdown Controls
MAX4411: -1.5V/V
MAX4411B: -2V/V
16-Bump UCSP (2mm
20-Pin Thin QFN (4mm
PART
ELIMINATE DC-BLOCKING
FIXED GAIN ELIMINATES
EXTERNAL RESISTOR
DirectDrive OUTPUTS
CAPACITORS
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
NETWORK
Ordering Information
Functional Diagram
✕
✕
2mm
4mm
PIN/BUMP-
PACKAGE
16 UCSP-16
16 UCSP-16
20 Thin QFN
✕
✕
0.6mm)
0.8mm)
Features
GAIN
(V/V)
-1.5
-1.5
-1.5
1

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MAX4411ETP+ Summary of contents

Page 1

... Notebook PCs MP3 Players Cellular Phones Smart Phones PDAs Portable Audio Equipment UCSP is a trademark of Maxim Integrated Products, Inc. LEFT AUDIO INPUT SHDNL SHDNR RIGHT AUDIO INPUT Pin Configurations and Typical Application Circuit appear at end of data sheet. ...

Page 2

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ABSOLUTE MAXIMUM RATINGS PGND to SGND .....................................................-0.3V to +0. ................................................................. .........................................................-0.3V to +0. and SV to PGND or SGND .........................-0.3V to ...

Page 3

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ELECTRICAL CHARACTERISTICS (continued) = 3V, PGND = SGND = 0V, SHDNL = SHDNR = SV ( unless otherwise noted. Typical values are at T PARAMETER SYMBOL Power-Supply Rejection ...

Page 4

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ( 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 1. 32Ω L 0.1 P ...

Page 5

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ( 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 V = 1.8V DD OUTPUTS 16Ω ...

Page 6

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ( 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T OUTPUT POWER vs. SUPPLY VOLTAGE 200 f = 1kHz IN 180 R = 16Ω L INPUTS 180° 160 ...

Page 7

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ( 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T POWER DISSIPATION vs. OUTPUT POWER 180 INPUTS IN PHASE 160 140 INPUTS 180° 120 OUT OF PHASE 100 ...

Page 8

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ( 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T EXITING SHUTDOWN SHDNR OUTR 200μs/div f = 1kHz 32Ω L SHDNL = GND PIN BUMP ...

Page 9

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown Detailed Description The MAX4411 fixed-gain, stereo headphone driver fea- tures Maxim’s DirectDrive architecture, eliminating the large output-coupling capacitors required by conven- tional single-supply headphone drivers. The device con- sists of two 80mW ...

Page 10

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown MICROPHONE BIAS MICROPHONE AMPLIFIER MICROPHONE AMPLIFIER OUTPUT AUDIO INPUT MAX4411 AUDIO INPUT HEADPHONE DRIVER Figure 2. Earbud Speaker/Microphone Combination Headset Configuration method raises some issues: • The sleeve is typically grounded to ...

Page 11

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown ADDITIONAL THD+N DUE TO DC-BLOCKING CAPACITORS 10 1 0.1 TANTALUM 0.01 0.001 ALUM/ELEC 0.0001 10 100 1k FREQUENCY (Hz) Figure 4. Distortion Contributed by DC-Blocking Capacitors duced by two different capacitor dielectric ...

Page 12

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown OUTPUT POWER vs. SUPPLY VOLTAGE 300 f = 1kHz IN INPUTS 180° 16Ω L 250 THD+N = 10% OUT OF PHASE 200 150 100 50 IN PHASE 0 1.8 2.1 ...

Page 13

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown Table 1. Suggested Capacitor Manufacturers SUPPLIER Taiyo Yuden TDK Note: Please indicate you are using the MAX4411 when contacting these component suppliers. output ripple. Likewise, decreasing the ESR of C2 reduces both ...

Page 14

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown 0.1μF AUX_IN MAX4060 BIAS 2.2kΩ 0.1μF IN+ IN- 0.1μF 14 ______________________________________________________________________________________ V DD 0.1μF 0.1μF 15kΩ 1μF 1μF OUT 0.1μF 15kΩ CODEC Q Q SHDNL SHDNR 1μF MAX4411 INL 1μ ...

Page 15

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown 1.8V TO 3.6V C3 1μ (D1) (A3 SHUTDOWN (A4) CONTROL C1P CHARGE C1 PUMP 1μF 3 (C4) C1N PV SV PGND ...

Page 16

... SGND B SHDNR SHDNL C INL OUTR D SV OUTL DD UCSP (B16-2) Ordering Information (continued) PART TEMP RANGE MAX4411ETP+ -40°C to +85°C MAX4411BEBE-T -40°C to +85°C MAX4411BEBE+T -40°C to +85°C MAX4411BETP -40°C to +85°C MAX4411BETP+ -40°C to +85°C +Denotes lead-free package. 16 ______________________________________________________________________________________ TOP VIEW 3 ...

Page 17

Fixed-Gain, DirectDrive, Stereo Headphone Amplifier 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, 4x4 UCSP 1 21-0101 ...

Page 18

... 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. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Package Information (continued) ...

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