MAX4855 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – 0.75ohm, Dual SPDT Audio Switch with Integrated Comparators

19-3377; Rev 0; 7/04
0.75Ω, Dual SPDT Audio Switch with
Integrated Comparators
General Description
The MAX4855 dual, single-pole/double-throw (SPDT)
switch operates from a single +2V to +5.5V supply and
features rail-to-rail signal handling. The MAX4855 has
low on-resistance (0.75Ω) with a +3V supply making it
ideal for audio switching applications in portable
devices. The device also integrates two internal com-
parators that can be used for headphone detection or
mute/send key functions.
The MAX4855 is available in the space-saving (3mm x
3mm), 16-pin thin QFN package and operates over the
extended temperature range of -40°C to +85°C.
Applications
Speaker Headset Switching
Audio-Signal Routing
Cellular Phones
Notebook Computers
PDAs and Other Handheld Devices
Features
♦ Audio Signal Routing
♦ 0.75Ω On-Resistance
♦ 0.18Ω On-Resistance Flatness
♦ 0.07Ω Channel-to-Channel Matching
♦ Rail-to-Rail Signal Handling
♦ 2 Integrated Comparators
♦ 1.8V Logic Compatible
♦ 2V to 5.5V Supply Range
♦ Available in a Space-Saving (3mm x 3mm),
16-Pin TQFN Package
Ordering Information
PART
TEMP RANGE
MAX4855ETE -40°C to +85°C
*EP = Exposed paddle.
PIN-
PACKAGE
16 TQFN-EP*
TOP
MARK
ABY
Block Diagram/Truth Table
Pin Configuration
NC1
NO1
NC2
NO2
COUT1
COUT2
MAX4855
0.75Ω
0.75Ω
COM1
IN1
IN2
COM2
V_CC
3
MAX4855
IN_ NO_ NC_
0 OFF ON
1 ON OFF
SWITCHES SHOWN FOR
LOGIC 0 INPUT
CIN1
V_CC
3
CIN2
TOP VIEW
16 15 14 13
N.C. 1
CIN1 2
CIN2 3
COM1 4
MAX4855
5
6
7
8
12 NO2
11 COUT1
10 COM2
9 IN2
THIN QFN
CONNECT EXPOSED PADDLE TO GROUND.
________________________________________________________________ Maxim Integrated Products 1
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.