max9892 Maxim Integrated Products, Inc., max9892 Datasheet

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max9892

Manufacturer Part Number
max9892
Description
Shunt Mode Audio Click-and-pop Eliminator
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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Part Number:
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Quantity:
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The MAX9892 is an audio click-and-pop eliminator for
portable multimedia devices. Operating from a 1.7V to
3.6V supply, the MAX9892 connects to the output of the
existing system amplifier and provides a low-imped-
ance path to ground during startup and shutdown. The
inputs INL and INR accept voltage swings from V
5.5V below V
section for more information. The power-up and power-
down transients are shunted to ground to prevent clicks
and pops from becoming audible.
The MAX9892 features two low-impedance analog
switches controlled by MUTE that opens and closes the
switches. The switches are open during normal opera-
tion and have no impact on the output signal. During
startup and shutdown of the amplifier, the MAX9892
can be activated to short the outputs to ground and
prevent clicks and pops from pulling current through
the headphones.
The MAX9892 is available in 6-bump UCSP (1mm x
1.52mm x 0.6mm) and 6-pin µDFN (2mm x 2mm x
0.75mm) packages. The MAX9892 is specified over the
-40°C to +85°C temperature range.
19-4295; Rev 0; 10/08
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.
HEADPHONE
0.1μF
AMPLIFIER
Mobile Phones
Smart Phones
Mobile Internet Devices
Portable Gaming Consoles
Portable Media Players
Notebook Computers
1.7V TO 3.6V
Shunt Mode Audio Click-and-Pop Eliminator
DD
Typical Operating Circuit
V
. See the Setting the Supply Voltage
DD
________________________________________________________________ Maxim Integrated Products
R
R
SERIES
SERIES
INL
General Description
INR
GND
MAX9892
Applications
MUTE
SET
C SET
DD
to
♦ Distortion-Free, Click-and-Pop Elimination
♦ Less than 1µA Supply Current
♦ 1.7V to 3.6V Single-Supply Operation
♦ Tiny Packages
+ Denotes a lead-free/RoHS-compliant package.
MAX9892ERT+
MAX9892ELT+
TOP VIEW
(BUMPS ON BOTTOM)
TOP VIEW
6-Bump UCSP (1mm x 1.52mm x 0.6mm)
6-Pin µDFN (2mm x 2mm x 0.75mm)
PART
B
A
+
MUTE
INL
1
MUTE
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
INL
6
1
MAX9892
MAX9892
μDFN
Pin Configurations
UCSP
GND
GND
V
V
DD
DD
5
2
2
SET
INR
4
3
INR
SET
3
PIN-PACKAGE
6 UCSP
6 µDFN
Features
1

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max9892 Summary of contents

Page 1

... General Description The MAX9892 is an audio click-and-pop eliminator for portable multimedia devices. Operating from a 1.7V to 3.6V supply, the MAX9892 connects to the output of the existing system amplifier and provides a low-imped- ance path to ground during startup and shutdown. The inputs INL and INR accept voltage swings from V 5 ...

Page 2

Shunt Mode Audio Click-and-Pop Eliminator ABSOLUTE MAXIMUM RATINGS , MUTE, SET to GND..........................................-0. INL, INR to GND .................................(V Continuous Current In/Out of V ......................................30mA DD Continuous Current In/Out of MUTE ...................................30mA Continuous Current In/Out of SET.......................................30mA ...

Page 3

... CLICK AND POP vs TESTED WITH THE MAX4338 -20 -40 -60 OUT OF SHUTDOWN -80 INTO SHUTDOWN -100 1.5 2.5 3.5 4.5 5.5 V (V) DD CROSSTALK vs. FREQUENCY 0 -20 -40 -60 -80 -100 -120 0.01 0 100 FREQUENCY (kHz) R vs. SUPPLY VOLTAGE ON 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1.5 2.5 3.5 4.5 5.5 V (V) DD SWITCH TURN-OFF/ON TIME MAX9892 toc06 C = 500pF SET MUTE 2V/div IN_ 2V/div 2ms/div 3 ...

Page 4

Shunt Mode Audio Click-and-Pop Eliminator UCSP µDFN NAME BUMP PIN Left-Channel Input. Connect INL in between the output coupling capacitor and the headphone A1 1 INL jack GND Ground Right-Channel Input. Connect INR in between the output coupling ...

Page 5

... V AMP I is the current through R 2 ence to GND, the MAX9892 supply can be set from 2V to 3.5V. A series resistor (R Operating Circuit , is necessary to achieve optimal click- and-pop reduction. See the Click and Pop vs. R graph in the Typical Operating Characteristics for details on how much click-and-pop reduction to expect for a given series resistor ...

Page 6

... Application Note 1891: Understanding the Basics of the Wafer- Level Chip-Scale Package (WL-CSP) at ic.com/ucsp. See Figure 4 for the recommended MAX9892 PCB footprint. HEADPHONE AMP ...

Page 7

Shunt Mode Audio Click-and-Pop Eliminator For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 6 UCSP 6 µDFN _______________________________________________________________________________________ Package Information PACKAGE CODE R6-1A1+1 L622-1 DOCUMENT NO. 21-0228 21-0164 7 ...

Page 8

Shunt Mode Audio Click-and-Pop Eliminator For the latest package outline information and land patterns www.maxim-ic.com/packages. D AAA AAA PIN 1 SAMPLE INDEX AREA MARKING _______________________________________________________________________________________ Package Information (continued ...

Page 9

... Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2008 Maxim Integrated Products Package Information (continued) MAX. 0.80 0.25 0.035 2.05 - 2.05 0. (N/2 - 0.30±0.05 1.30 REF. 0.25±0.05 1.50 REF. 0.20±0.03 1.60 REF registered trademark of Maxim Integrated Products, Inc. PACKAGE OUTLINE 10L uDFN, 2x2x0. 21-0164 B 2 ...

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