MAX97236 Datasheet, PDF (1/39 Pages) Maxim Integrated Products – Audio Amplifier with Jack Detection 25-Bump, 2.4mm x 2.3mm, 0.4mm Pitch WLP

19-5810; Rev 0; 3/11
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Audio Amplifier with Jack Detection
General Description
The MAX97236 is an audio amplifier with volume con-
trol and microphone preamplifier intended for use in
portable audio systems employing a headphone jack.
The audio circuit is powered from a single, dual-mode
charge pump, allowing the output signals to be ground
referenced, and eliminating the need for large and
expensive DC-blocking capacitors. The configuration of
a 3.5mm jack is determined by autoconfigure circuitry.
The IC’s functional blocks are auto-enabled after the
configuration of the jack is determined.
The audio amplifier is powered from a single 1.8V power
supply that reduces overall power consumption. The
microphone preamplifier and bias are powered from a
separate power-supply input accommodating bias volt-
ages that are greater than 2.4V.
The automatic jack detection determines when a 3.5mm
plug is inserted into the system jack and determines the
configuration of the installed load. The configuration of
the load is then reported to the system through the I²C
interface. Multiple popular jack and load configurations
are detectable with this scheme. The IC detects head-
sets, headphones, and A/V cables.
The headphone amplifier is capable of over 35mW into
16I. The device is available in a small, 25-bump WLP
package with a 0.4mm pitch and is specified over the
extended -40NC to +85NC temperature range.
Smartphones
Mobile Handsets
Notebooks
Portable Gaming Devices
Tablets
Applications
Ordering Information
PART
TEMP
RANGE
PIN-
I²C
PACKAGE ADDRESS
MAX97236EWA+ -40NC to +85NC 25 WLP
0x80
+Denotes a lead(Pb)-free/RoHS-compliant package.
Features
S 30mW Headphone Amplifier Employs Second-
Generation DirectDrive^® with Dual-Mode Charge-
Pump Architecture
S Automatic Jack Detection Circuitry
S Microphone Amplifier and Bias
S 1.8V Power Supply
S 2.4V to 3.6V Microphone Power Supply
S Headphone Amplifier Volume Control
S Decodes Data from a Passive Multibutton Headset
Remote Control
S 25-Bump, 2.4mm x 2.3mm, 0.4mm Pitch WLP
DirectDrive is a registered trademark of Maxim Integrated Products, Inc.
Simplified Block Diagram
1.8V 2.4V TO 3.0V
VDD MICVDD
HPL
TIP
HPR
RING1
CHARGE
PUMP
MAX97236
JACK
DETECTION
AND
CONFIGURATION
RING2
SDA
I²C
SCL ^{INTERFACE SERIAL}
AND
INTERFACE
IRQ CONTROL
SLEEVE
MOUTP
MOUTN
MIC
JACKSW
Functional Diagram/Typical Application Circuit appears at end of
data sheet.
________________________________________________________________ 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.