MAX9892 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Shunt Mode Audio Click-and-Pop Eliminator

19-4295; Rev 0; 10/08
Shunt Mode Audio Click-and-Pop Eliminator
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
Typical Operating Circuit
HEADPHONE
AMPLIFIER
R_SERIES
R_SERIES
1.7V TO 3.6V
INL INR
MAX9892
V_DD
0.1μF
MUTE
SET
GND
CSET
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)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX9892ERT+
-40°C to +85°C 6 UCSP
MAX9892ELT+
-40°C to +85°C 6 µDFN
+Denotes a lead-free/RoHS-compliant package.
Pin Configurations
TOP VIEW
(BUMPS ON BOTTOM)
1
2
3
A
INL
GND
INR
MAX9892
B MUTE
V_DD
SET
TOP VIEW
UCSP
MUTE V_DD SET
6
5
4
MAX9892
+
1
2
3
INL GND INR
μDFN
________________________________________________________________ Maxim Integrated Products 1
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.