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MAX4855ETE+

P1-P3P4-P6P7-P9P10-P10
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
MAX4855
0.75Ω, Dual SPDT Audio Switch with
Integrated Comparators
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
16
1
2
3
4
12
11
10
9
15 14 13
5678
NC1
IN1
V
CC
COUT2
NO2
COUT1
COM2
IN2
CIN1
CIN2
COM1
NO1
GND
NC2
N.C.
N.C.
MAX4855
THIN QFN
CONNECT EXPOSED PADDLE TO GROUND.
Pin Configuration
Ordering Information
V
CC
3
MAX4855
NC1
NO1
0.75Ω
0.75Ω
NC2
NO2
COUT2
COM1
IN1
IN2
COM2
CIN2
V
CC
3
COUT1
CIN1
MAX4855
IN_ NO_ NC_
0 OFF ON
1 ON OFF
SWITCHES SHOWN FOR
LOGIC 0 INPUT
Block Diagram/Truth Table
19-3377; Rev 0; 7/04
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.
*EP = Exposed paddle.
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4855ETE
-40°C to +85°C 16 TQFN-EP*
ABY
MAX4855
0.75Ω, Dual SPDT Audio Switch with
Integrated Comparators
2 _______________________________________________________________________________________
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Signals on NO, NC, or COM exceeding V
CC
or GND are clamped by internal diodes. Signals on IN exceeding GND are
clamped by an internal diode. Limit forward-diode current to maximum current rating.
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.0V, T
A
= +25°C, unless other-
wise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Voltage V
CC
2 5.5 V
Supply Current I
CC
V
CC
= 5.5V, V
IN_
= 0V or V
CC
510µA
ANALOG SWITCH
Analog Signal Range
V
NO_
,
V
NC_
,
V
COM_
0
V
CC
V
T
A
= +25°C
0.75
1
On-Resistance (Note 3) R
ON
V
CC
= 2.7V, I
COM_
=
100mA, V
NC_
or V
NO_
= 0V
to V
CC
T
A
= -40°C to +85°C 1.1
Ω
T
A
= +25°C
0.075 0.120
On-Resistance Match
Between Channels
(Notes 3, 4)
∆R
ON
V
CC
= 2.7V, I
COM
= 100mA,
V
NC_
or V
NO_
= 1.5V
T
A
= -40°C to +85°C
0.135
Ω
T
A
= +25°C
0.18 0.275
On-Resistance Flatness
(Note 5)
R
FLAT
V
CC
= 2.7V, I
COM_
=
100mA, V
NC_
or V
NO_
=
0.75V, 1.5V, 1.75V
T
A
= -40°C to +85°C 0.3
Ω
T
A
= +25°C -2 +2
NO_/NC_ Off-Leakage
Current (Note 2)
I
OFF
V
CC
= 5.5V, V
NC_
or V
NO_
=
1V or 4.5V, V
COM_
= 4.5V or
1V
T
A
= -40°C to +85°C -10
+10
nA
T
A
= +25°C -2 +2
COM_ On-Leakage
Current (Note 2)
I
ON
V
CC
= 5.5V; V
NC_
or V
NO_
=
1V, 4.5V, or floating; V
COM_
= 1V, 4.5V, or floating
T
A
= -40°C to +85°C -15
+15
nA
DYNAMIC CHARACTERISTICS
T
A
= +25°C 40 60
Turn-On Time t
ON
V
CC
= 2.7V, V
NO_
or V
NC_
=
1.5V, R
L
= 300Ω, C
L
= 50pF
(Figure 1)
T
A
= -40°C to +85°C 100
ns
ABSOLUTE MAXIMUM RATINGS
V
CC
, IN_, CIN_ to GND ..............................................-0.3V to +6.0V
NO_, NC_, COM_, COUT_ (Note 1) ...............-0.3V to (V
CC
+ 0.3V)
COUT_ Continuous Current...................................................±20mA
Closed Switch Continuous Current COM_, NO_, NC_.......±300mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 50% duty cycle) ....................................±400mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle) ....................................±500mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin Thin QFN (derate 20.8mW/°C above +70°C).....1667mW
Operating Temperature Range................................-40°C to +85°C
Junction Temperature...........................................................+150°C
Storage Temperature Range .................................-65°C to +150°C
Lead Temperature (soldering, 10s)......................................+300°C
MAX4855
0.75Ω, Dual SPDT Audio Switch with
Integrated Comparators
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.0V, T
A
= +25°C, unless other-
wise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
T
A
= +25°C 30 40
Turn-Off Time t
OFF
V
CC
= 2.7V, V
NO_
or V
NC_
=
1.5V, R
L
= 300Ω, C
L
= 50pF
(Figure 1)
T
A
= -40°C to +85°C 60
ns
T
A
= +25°C 15
Break-Before-Make Time
Delay (Note 3)
t
D
V
CC
= 2.7V, V
NO_
or V
NC_
=
1.5V, R
L
= 50Ω, C
L
= 50pF
(Figure 2)
T
A
= -40°C to +85°C 2
ns
Charge Injection Q V
COM_
= 1.5V, R
S
= 0Ω, C
L
= 1.0nF (Figure 3)
170
pC
Off-Isolation (Note 6)
f = 100kHz, V
COM_
= 1V
RMS
, R
L
= 50Ω, C
L
= 5pF
(Figure 4)
-75 dB
Crosstalk V
CT
f = 100kHz, V
COM_
= 1V
RMS
, R
L
= 50Ω, C
L
= 5pF
(Figure 4)
-93 dB
-3dB Bandwidth BW Signal = 0dBm, R
L
= 50Ω, C
L
= 5pF (Figure 4) 38
Total Harmonic Distortion
THD f = 20Hz to 20kHz, V
COM_
= 1V + 2V
P-P
, R
L
= 32Ω
0.07
%
NO_/NC_ Off-
Capacitance
C
OFF
f = 1MHz (Figure 5) 50 pF
COM On-Capacitance C
ON
f = 1MHz (Figure 5)
150
pF
DIGITAL I/O (IN_)
V
CC
= 2V to 3.6V 1.4
Input-Logic High Voltage
V
IH
V
CC
= 3.6V to 5.5V 1.8
V
V
CC
= 2V to 3.6V 0.5
Input-Logic Low Voltage
V
IL
V
CC
= 3.6V to 5.5V 0.8
V
Input Leakage Current I
IN
V
IN_
= 0 or 5.5V
-0.5 +0.5
µA
COMPARATOR
Comparator Range 0 5.5 V
Comparator Threshold V
CC
= 2V to 5.5V, falling input
0.3 x
V
CC
0.33 x
V
CC
0.36 x
V
CC
V
Comparator Hysteresis V
CC
= 2V to 5.5V 50 mV
Comparator Output High
Voltage
I
SOURCE
= 1mA
V
CC
-
0.4V
V
Comparator Output Low
Voltage
I
SINK
= 1mA 0.4 V
Rising input (Figure 6) 2.5
Comparator Switching
Time
Falling input (Figure 6) 0.5
µs
Note 2: Specifications are 100% tested at T
A
= +85°C only, and guaranteed by design and characterization over the specified
temperature range.
Note 3: Guaranteed by design and characterization; not production tested.
Note 4: ∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 6: Off-Isolation = 20log
10
(V
COM_
/ V
NO_
), V
COM_
= output, V
NO_
= input to off switch.
P1-P3P4-P6P7-P9P10-P10

MAX4855ETE+

Mfr. #:
Buy MAX4855ETE+
Manufacturer:
Maxim Integrated
Description:
Analog Switch ICs .75Ohm Dual SPDT Audio Switch
Lifecycle:
New from this manufacturer.
Delivery:
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