19-4461; Rev 1; 4/09
Low-Resistance DPDT Switches
with Negative Rail
General Description
The MAX14535E–MAX14539E are low on-resistance
and high ESD-protected DPDT switches that multiplex
analog signals, such as AC-coupled audio or video.
These devices combine the low on-capacitance (C
ON
)
and low on-resistance (R
ON
) necessary for high-perfor-
mance switching applications in portable electronics,
and include an internal negative supply to pass audio
signals that swing below ground (down to -1.5V).
The MAX14535E/MAX14537E/MAX14539E feature inter-
nal shunt resistors on the normally open path (and nor-
mally closed path, (MAX14539E)) to reduce clicks and
pops heard at the output. The MAX14535E–
MAX14539E have an enable input (EN) to reduce sup-
ply current and set all channels to high-impedance
when driven low. When EN is driven low, the
MAX14537E/MAX14538E have the lowest possible cur-
rent consumption, but cannot withstand negative rail
signals. The MAX14535E/MAX14536E/MAX14539E can
still withstand a negative signal to NC_, NO_, or COM_
from -1.5V to min (V
CC
, 3V.)
The MAX14535E–MAX14539E operate from a +2.4V to
+5.5V supply. These devices can be powered from the
typical analog supply voltage in a cell phone (+2.5V to
+2.8V) or a lithium-ion (Li+) battery (about 4.3V max).
The MAX14535E–MAX14539E have high ESD protec-
tion, up to ±15kV on COM_, and the NC_, NO_, and
COM_ voltage can go up to 3.6V when V
CC
= 0 without
damaging the devices.
All devices are offered in a space-saving, 10-pin,
1.4mm x 1.8mm UTQFN package, and operate over the
-40°C to +85°C extended temperature range.
o
Low 0.135Ω (typ) On-Resistance
o
Low 0.3mΩ (typ) R
ON
Flatness
o
Single +2.4V to +5.5V Supply Voltage
o
Pass Audio Signal Between -1.5V and min (V
CC
,
3V)
o
Internal Shunt Resistors for Click-and-Pop
Reduction (MAX14535E/MAX14537E/MAX14539E)
o
Withstand 3.6V (max) Applied to NC_, NO_, and
COM_ when V
CC
= 0V
o
High ESD Protection: Up to ±15kV on COM_
o
10-Pin UTQFN (1.4mm x 1.8mm) Package
o
-40°C to +85°C Operating Temperature Range
Features
MAX14535E–MAX14539E
Pin Configuration
TOP VIEW
GND
6
5
NC2
COM2
NO2
V
CC
7
NC1
COM1
NO1
8
9
10
MAX14535E–
MAX14539E
1
CB
2
EN
4
3
+
Applications
Cell Phones
MP3 Players
Notebook Computers
PDAs
UTQFN
Typical Operating Circuits appear at end of data sheet.
Ordering Information/Selector Guide
PART
MAX14535EEVB+
MAX14536EEVB+
MAX14537EEVB+*
MAX14538EEVB+*
MAX14539EEVB+*
PIN-PACKAGE
10 UTQFN
10 UTQFN
10 UTQFN
10 UTQFN
10 UTQFN
TOP MARK
AAS
AAT
AAU
AAV
AAW
SHUNT RESISTORS
NO1, NO2 Terminals
⎯
NO1, NO2 Terminals
⎯
NO_ and NC_ Terminals
SHUTDOWN MODE
(EN = LOW)
SIGNAL RANGE
-1.5V to min (V
CC
, 3V)
-1.5V to min (V
CC
, 3V)
0 to V
CC
0 to V
CC
-1.5V to min (V
CC
, 3V)
Note:
All devices are specified over the -40°C to +85°C temperature range.
+Denotes
a lead(Pb)-free package/RoHS-compliant package.
*Future
product—contact factory for availability.
________________________________________________________________
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.
Low-Resistance DPDT Switches
with Negative Rail
MAX14535E–MAX14539E
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND.)
V
CC
, CB, EN ..........................................................-0.3V to +6.0V
NO_, NC_, COM_ (V
CC
> 2.4V, MAX14535E/
MAX14536E/MAX14539E).................................-1.8V to +3.6V
NO_, NC_, COM_ (V
CC
< 2.4V, MAX14535E/
MAX14536E/MAX14539E).................................-0.3V to +3.6V
NO_, NC_, COM_ (V
EN
< V
IL
, MAX14537E/
MAX14538E)......................................................-0.3V to +6.0V
NO_, NC_, COM_ (V
EN
> V
IL
, V
CC
> 2.4V,
MAX14537E/MAX14538E).................................-1.8V to +3.6V
NO_, NC_, COM_ (V
EN
< V
IL
, V
CC
< 2.4V,
MAX14537E/MAX14538E).................................-0.3V to +3.6V
Continuous Current into NO_, NC_, COM_ Terminals....±300mA
Peak Current into NO_, NC_,
COM_ Terminals (50% duty cycle).............................±500mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin UTQFN (derate 6.9mW/°C above +70°C).........559mW
Junction-to-Ambient Thermal Resistance (
θ
JA
) (Note 1)..143.1°C/W
Junction-to-Case Thermal Resistance (
θ
JC
) (Note 1)...20.1°C/W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature Range ............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7 using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic/thermal-tutorial.
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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.4V 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.) (Note 2)
PARAMETER
Power-Supply Range
SYMBOL
V
CC
V
CC
=
3.0V
Supply Current
I
CC
V
CC
=
5.5V
Supply Current Increase with
Logic Level
MAX14537E/MAX14538E,
V
EN
= 0
MAX14535E/MAX14536E/
MAX14539E, V
EN
= 0, V
EN
= V
CC
MAX14537E/MAX14538E,
V
EN
= 0
MAX14535E/MAX14536E/
MAX14539E, V
EN
= 0, V
EN
= V
CC
12
8
CONDITIONS
MIN
2.4
TYP
MAX
5.5
1
15
µA
1
25
5
0
V
CC
Min
(3.0V,
V
CC
)
Min
(3.0V,
V
CC
)
0.135
0.35
0.05
0.3
500
1
1000
Ω
Ω
mΩ
Ω
µA
UNITS
V
V
EN
= 0.4V or 1.4V, V
CB
= 0.4V or 1.4V
MAX14537E/MAX14538E,
V
EN
< V
IL
Analog Signal Range
MAX14537E/MAX14538E,
V
EN
> V
IH
MAX14535E/MAX14536E/MAX14539E
V
CC
= 3.0V, V
COM_
= -1.5V, 3.0V;
I
NO_
= 100mA or I
NC_
= 100mA
V
CC
= 3.0V, V
COM_
= 0; I
COM_
= 100mA
(Note 3)
V
CC
= 3.0V, I
COM_
= 100mA;
V
COM_
= -1.5V to +3.0V (Note 4)
I
NO_
or I
NC_
= 1mA
-1.5
V
-1.5
On-Resistance
On-Resistance Match Between
Channels
On-Resistance Flatness
Shunt Switch Resistance
R
ON
∆R
ON
R
FLAT(ON)
R
SH
2
_______________________________________________________________________________________
Low-Resistance DPDT Switches
with Negative Rail
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.4V 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.) (Note 2)
PARAMETER
NC_ or NO_ Off-Leakage Current
SYMBOL
I
NC_,NO_(OFF)
CONDITIONS
Switch open, V
EN
= V
CC
, V
NO_
or V
NC_
=
0 or 2.5V, V
COM_
= 0V or 2.5V
V
EN
= 0, V
CC
= 3.0V, V
COM_
= 3.0V,
V
NC_
= V
NO_
= 0
V
CC
= 0, V
COM_
= 3.6V, V
NC_
= V
NO_
=
unconnected
V
CC
= 3.0V, V
COM_
= -1.5V or +2.5V, V
NC_
or V
NO_
= -1.5V, 2.5V or unconnected
V
CC
= 3.0V, V
NC_
or V
NO_
= 1.5V,
R
L
= 50Ω, C
L
= 100pF, (V
EN
= 0 to V
CC
) or
(V
EN
= V
CC
and V
CB
transitions), Figure 1
V
CC
= 3.0V, V
NC_
or V
NO_
= 1.5V, R
L
=
50Ω, C
L
= 100pF, (V
EN
= V
CC
to 0) or (V
EN
= V
CC
and V
CB
transitions), Figure 1
V
NC_
= V
NO_
= 1.5V, R
L
= 50Ω, Figure 2
f = 100kHz, V
COM_
= 0dBm, R
L
= 50Ω,
Figure 3
f = 100kHz, V
COM_
= 0dBm, R
L
= 50Ω,
Figure 3 (Note 5)
R
S
= R
L
= 50Ω, V
NO_
= 0dBm, Figure 3a–3d
R
S
= R
L
= 50Ω, V
NO_
= 0dBm, Figure 3a–3d
f = 10kHz, V
CC
= 3V ± 0.3V,
R
COM_
= 50Ω
f = 20Hz to 20kHz, V
COM_
= 0.5V
P-P
,
DC bias = 0, R
L
= 32Ω
f = 1MHz, V
COM_
= 0.5V
P-P
, DC bias = 0
MIN
-10
-10
-1.5
-100
TYP
MAX
+10
+10
+1.5
+100
UNITS
nA
nA
mA
nA
MAX14535E–MAX14539E
COM_ Off-Leakage Current
I
COM_(OFF)
COM_ On-Leakage Current
AC CHARACTERISTICS
Turn-On Time
I
COM_(ON)
t
ON
40
90
µs
Turn-Off Time
Break-Before-Make Time Delay
Off-Isolation
Crosstalk
NC_ -3dB Bandwidth
NO_ -3dB Bandwidth
Power-Supply Rejection Ratio
Total Harmonic Distortion
COM_ On-Capacitance
NC_, NO_ Off-Capacitance
LOGIC INPUT
Input Logic-High
Input Logic-Low
Input Leakage Current
ESD PROTECTION
t
OFF
t
D
V
ISO
V
CT
BW
NC_
BW
NO_
PSRR
THD
C
COM_(ON)
18
28
-70
-80
100
100
90
0.003
15
30
1.4
40
µs
µs
dB
dB
MHz
MHz
dB
%
pF
pF
V
C
NC_,NO_(OFF)
f = 1MHz, V
COM_
= 0.5V
P-P
, DC bias = 0
V
IH
V
IL
I
IN
V
CB
= 0 or V
CC
, V
EN
= 0V or V
CC
Human Body Model
-1
0.4
+1
±15
±15
±8
±2
V
µA
COM1, COM2
All Pins
IEC 61000 Air-Gap Discharge
IEC 61000 Contact Discharge
Human Body Model
kV
kV
Note 2:
Devices are production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by design.
Note 3:
∆R
ON(MAX)
=
|
R
ON(CH1)
- R
ON(CH2)
|
Note 4:
Flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over speci-
fied analog signal ranges. These values are guraranteed by design.
Note 5:
Between two switches.
_______________________________________________________________________________________
3
Low-Resistance DPDT Switches
with Negative Rail
MAX14535E–MAX14539E
t
R
< 5ns
t
F
< 5ns
V
IN
NO_
or NC_
COM_
LOGIC
INPUT
V
OUT
R
L
C
L
V
IH
50%
V
IL
t
OFF
V
OUT
0.9 x V
0UT
CB
LOGIC
INPUT
SWITCH
OUTPUT
0V
0.1 x V
OUT
MAX14535E–MAX14539E
t
ON
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
R
L
V
OUT
= V
IN_
R
L
+ R
ON
(
)
CONTROL DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 1. Switching Time
OFF-ISOLATION = 20log
NETWORK
ANALYZER
COM1
NC1
50Ω
MAX14535E–
MAX14539E
NO1*
V
IN
50Ω
50Ω
V
OUT
V
IN
V
ON-LOSS = 20log
OUT
V
IN
V
CROSSTALK = 20log
OUT
V
IN
V
OUT
MEAS
REF
50Ω
50Ω
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
Figure 2. On-Loss, Off-Isolation, and Crosstalk
4
_______________________________________________________________________________________
Low-Resistance DPDT Switches
with Negative Rail
Typical Operating Characteristics
(T
A
= +25°C, V
CC
= +3.0V, unless otherwise noted.)
MAX14535E–MAX14539E
NORMALIZED ON-RESISTANCE
vs. COM VOLTAGE
MAX14535E-9E toc01
NORMALIZED ON-RESISTANCE
vs. COM VOLTAGE
MAX14535E-9E toc02
NORMALIZED ON-RESISTANCE
vs. COM VOLTAGE
1.8
NORMALIZED ON-RESISTANCE
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
T
A
= -40°C
T
A
= +25°C
V
CC
= +5V
T
A
= +85°C
MAX14535E-9E toc03
1.05
1.04
NORMALIZED ON-RESISTANCE
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-1.5 -1.0 -0.5
0
V
CC
= +5V
V
CC
= +3V
2.0
1.8
NORMALIZED ON-RESISTANCE
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
T
A
= -40°C
T
A
= +25°C
V
CC
= +3V
T
A
= +85°C
2.0
0.5 1.0 1.5 2.0 2.5 3.0
-1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
-1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
COM VOLTAGE (V)
COM VOLTAGE (V)
COM VOLTAGE (V)
NC_ TURN-ON/NO_ TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX14535E-9E toc04
NO_ TURN-ON/NC_ TURN-OFF TIME
vs. SUPPLY VOLTAGE
90
80
70
TIME (µs)
MAX14535E-9E toc05
NC_ TURN-ON/NO_ TURN-OFF TIME
vs. TEMPERATURE
70
60
TIME (µs)
50
40
30
NO_ TURN-OFF TIME
NC_ TURN-ON TIME
MAX14535E-9E toc06
100
90
80
70
TIME (µs)
60
50
40
30
20
10
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
NO_ TURN-OFF TIME
NC_ TURN-ON TIME
100
80
60
50
40
30
20
10
0
NO_ TURN-ON TIME
NC_ TURN-OFF TIME
20
10
0
5.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
NO_ TURN-ON/NC_ TURN-OFF TIME
vs. TEMPERATURE
70
NO_ TURN-ON TIME
60
TIME (µs)
50
40
30
20
10
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
0.4
2.0
2.5
NC_ TURN-OFF TIME
MAX14535E-9E toc07
CB LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX14535E-9E toc08
80
1.2
V
CB
RISING
CB LOGIC THRESHOLD (V)
1.0
0.8
V
CB
FALLING
0.6
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
