Rainbow Electronics MAX9892 - Manual

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
DD to
5.5V below V DD . See the Setting the Supply Voltage
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.
Applications
Mobile Phones
Smart Phones
Mobile Internet Devices
Portable Gaming Consoles
Portable Media Players
Notebook Computers
Features
♦ Distortion-Free, Click-and-Pop Elimination
♦ Less than 1µA Supply Current
♦ 1.7V to 3.6V Single-Supply Operation
♦ Tiny Packages
6-Bump UCSP (1mm x 1.52mm x 0.6mm)
6-Pin µDFN (2mm x 2mm x 0.75mm)
MAX9892
Shunt Mode Audio Click-and-Pop Eliminator
________________________________________________________________ Maxim Integrated Products 1
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.
+ Denotes a lead-free/RoHS-compliant package.
1 2 3
A
B
UCSP
TOP VIEW
(BUMPS ON BOTTOM)
INL GND INR
V DD SET MUTE
4
3
INL
MUTE
5
2
GND
V DD
6
1
INR
SET
μDFN
TOP VIEW
MAX9892
MAX9892
+
Pin Configurations
MAX9892
MUTE
SET
CSET
V
DD
GND
1.7V TO 3.6V
HEADPHONE
AMPLIFIER
INL INR
R SERIES
R SERIES
0.1 μF
Typical Operating Circuit
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX9892ERT+ -40°C to +85°C 6 UCSP
MAX9892ELT+ -40°C to +85°C 6 µDFN