MAXIM MAX14759, MAX14761, MAX14763 User Manual
19-6051; Rev 0; 9/11
MAX14759/MAX14761/MAX14763
Above- and Below-the-Rails
Low On-Resistance Analog Switches
General Description
The MAX14759/MAX14761/MAX14763 analog switches
are capable of passing bipolar signals that are beyond
their supply rails. These devices operate from a single
+3.0V to +5.5V supply and support signals in the -25V
to +25V range.
The MAX14759 is a single-pole/single-throw (SPST) analog switch, while the MAX14761 is a dual-SPST analog
switch. The MAX14763 is a single-pole/double-throw
(SPDT) analog switch.
The MAX14759 features 1I (max) on-resistance with
a Q200nA (max) on-leakage current. The MAX14761/
MAX14763 feature 2I (max) on-resistance with a Q100nA
(max) on-leakage current. The low on-resistance and
high bandwidth allow use in digital- and analog-signal
switching applications.
The MAX14759/MAX14763 are available in an 8-pin
(3mm x 3mm) TDFN package. The MAX14761 is available in a 10-pin (3mm x 3mm) TDFN package. These
devices are specified over the -40NC to +85NC extended
temperature range.
Ordering Information/Selector Guide appears at end of data
sheet.
For related parts and recommended products to use with this part, refer
to www.maxim-ic.com/MAX14759.related.
Benefits and Features
S Simplify Power-Supply Requirements
+3.0V to +5.5V Supply Range
-25V to +25V Signal Range
S High Performance
Low 1I (max) or 2I (max) On-Resistance
Low 2.4mI (typ) and 5.1mI (typ) RON Flatness
500mA (max) Switch Current for MAX14759
Thermal Shutdown Protection
-40NC to +85NC Operating Temperature Range
High Bandwidth: 100MHz (typ) Insertion Loss
High-ESD Protection Up to 2kV
S Save Board Space
Small 8-Pin and 10-Pin TDFN Packages
Applications
Industrial Measurement Systems
Instrumentation Systems
RS-485 Termination Switching
CAN Bus Termination Switching
Opto-Relay Replacement
Medical Systems
ATE Systems
Audio Signal Routing and Switching
Functional Diagrams/Truth Tables
V
CC
MAX14759
OPEN
V
N
V
P
A1 B1
EN1
A2 B2
EN2
EN1 A1
0
1
V
P
AB
EN
SUPPLY
GENERATION
GND
EN A
0
1
CLOSED
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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.
CLOSED
OPEN
V
CC
MAX14761
SUPPLY
GENERATION
GND
V
N
EN2 A2
OPEN
0
1
CLOSED
V
CC
MAX14763
V
P
A1
A2
SEL
SUPPLY
GENERATION
GND
SEL A1 A2
CLOSED OPEN
0
1
OPEN CLOSED
V
N
COM
MAX14759/MAX14761/MAX14763
Above- and Below-the-Rails
Low On-Resistance Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.)
VCC .......................................................................... -0.3V to +6V
EN, EN1, EN2, SEL ...............................-0.3V to + (VCC + 0.3V)
A, B, A1, A2, B1, B2, COM .................... (VN - 0.3V) to Lesser of
(VP + 0.3V) or (VN + 52V)
VP .................................................................... -0.3V to Lesser of
(+52V) or (VN + 70V)
VN ........................Greater of (VCC - 40V) or (VP - 70V) to +0.3V
VP to V
Continuous Current Through Switch (MAX14759) ........ Q500mA
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.
.................................................................
N
-0.3V to +70V
PACKAGE THERMAL CHARACTERISTICS (Note 1)
8-Pin TDFN
Junction-to-Ambient Thermal Resistance (qJA) ..........48°C/W
Junction-to-Case Thermal Resistance (qJC) .................8°C/W
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.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 5V and TA = +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC CHARACTERISTICS
Power Supply Range V
Continuous Current Through
Switch
Supply Current I
Analog-Signal Range
On-Resistance R
On-Resistance Flatness
A, A1, A2 Off-Leakage Current I
COM, B, B1, B2 Off-Leakage
Current
CC
I
A_
CC
V
COM
VA_, V
ON
DR
ON
A_(OFF)
I
COM(OFF)
I
B_(OFF)
(MAX14759) -500 +500
(MAX14761/MAX14763) -250 +250
VCC ≤ 4.7V
VCC > 4.7V
,
Switch open or closed -25 +25 V
B_
IB = Q500mA, VA = Q25V (MAX14759)
I
or I
COM
(MAX14761/MAX14763)
-25V < VA < +25V, IB = Q500mA (MAX14759)
-25V < V
(MAX14761/MAX14763)
VA = +25V, VB = 0V, Figure 1 (MAX14759) -250 +250
V
= +25V, V
A_
(MAX14761/MAX14763)
V
COM
,
(MAX14759/MAX14763)
V
= 15V, V
B_
= Q250mA, VA_= Q25V
B_
< +25V, I
A_
or VB = 15V, V
Continuous Current Through Switch
(MAX14761, MAX14763) ........................................... Q250mA
Continuous Power Dissipation (TA = +70NC)
8-Pin TDFN Package
(derate 24.4mW/NC above +70NC) .........................1951.2mW
10-Pin TDFN Package
(derate 24.4mW/NC above +70NC) .........................1951.2mW
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +160NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
10-Pin TDFN
Junction-to-Ambient Thermal Resistance (qJA) ..........41°C/W
Junction-to-Case Thermal Resistance (qJC) .................9°C/W
3.0 5.5 V
V
= V
EN_
CC
V
= VCC/2 4.1 10
EN_
V
= V
EN_
CC
V
= VCC/2 2.5 6
EN_
or I
B_
or VB_= 0V, Figure 1
COM
A_
= 0V, Figure 1 (MAX14761) -100 +100
A_
= Q250mA
COM
= 0V, Figure 1
4.1 10
2.5 6
0.6 1
1.2 2
2.4
5.1
-250 +250
-100 +100
mA
mA
I
mI
nA
nA
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MAX14759/MAX14761/MAX14763
Above- and Below-the-Rails
Low On-Resistance Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 5V and TA = +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VA = ±25V, B1, B2, or COM are unconnected,
Figure 1 (MAX14759)
On-Leakage Current I
DIGITAL LOGIC
Input-Voltage Low V
Input-Voltage High V
Input Current I
AC CHARACTERISTICS
Power-On Time t
Enable Turn-On Time t
Enable Turn-Off Time t
Break-Before-Make Interval t
Off-Isolation V
Crosstalk V
-3dB Bandwidth BW
Total Harmonic Distortion Plus
Noise
Charge Injection Q V
Input Capacitance C
THERMAL PROTECTION
Thermal Shutdown Temperature t
Shutdown Temperature Hysteresis t
ESD PROTECTION
All Pins Human Body Model
Note 2: All devices are 100% production tested at TA = +25NC. Specifications over operating temperature range are guaranteed
by design.
Note 3: The power-on time is defined as the settling time for the charge pump’s output to reach steady-state value within 1%.
ON
PWRON
ON
OFF
BBM
THD+N
HYST
SHUT
VA = ±25V, B1, B2, or COM are unconnected,
Figure 1 (MAX14761)
VA = ±25V, B1, B2, or COM are unconnected,
Figure 1 (MAX14763)
VCC = 3.0V 0.7
VCC = 3.6V 0.7
IL
VCC = 4.5V 0.8
VCC = 5.5V 0.8
VCC = 3.0V 1.7
VCC = 3.6V 1.9
IH
VCC = 4.5V 2.0
VCC = 5.5V 2.1
L
V
= Q10V, CVP = CVN = 1FF, Note 3
A_
V
= Q10V, RL = 10kI, Figure 2 (MAX14759/
A_
MAX14761)
VA_ = Q10V, RL = 10kI, Figure 2 (MAX14763)
VA_ = Q10V, RL = 10kI, Figure 2
VA_ = 1V
V
= 1V
ISO
CT
IN
A_
CL = 15pF, Figure 4
RS = RL = 50I, f = 100kHz, V
Figure 5 (MAX14763)
RS = 50I, RL = 50I , V
RS = RL = 1kI, f = 20Hz to 20kHz
= GND, CL = 1nF, Figure 7 1370 pC
A_
At A, A1, A2, B, B1, B2, and COM pins 58 pF
, RL = 10kI, Figure 3 (MAX14763)
RMS
, f = 100kHz, RL = 50I,
RMS
= 1V
COM
= 1V
A_
, Figure 6
P-P
RMS
-200 +200
-100 +100
-250 +250
-1 +1 µA
320 ms
152 300
1.12 1.8 ms
300 1000
740
-77 dB
,
-83 dB
100 MHz
0.0012 %
+154
24
Q2
nA
V
V
Fs
Fs
Fs
NC
NC
kV
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MAX14759/MAX14761/MAX14763
Above- and Below-the-Rails
Low On-Resistance Analog Switches
Test Circuits/Timing Diagrams
V
MAX14759
MAX14761
MAX14763
A_
EN_/SEL
SWITCH
OPEN
GND
Figure 1. Leakage Current Measurement
+5V
+5V
CC
0.1µF
0.1µF
B_/COM
+5V
0.1µF
V
CC
MAX14759
MAX14761
MAX14763
GND
B_/COM
UNCONNECTED
AA
SWITCH
CLOSED
A_
A
EN_/SEL
ON-LEAKAGE CURRENTOFF-LEAKAGE CURRENT
LOGIC
INPUT
Figure 2. Switching Time
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A_+10V
EN_/SEL
V
CC
MAX14759
MAX14761
MAX14763
GND
B_/COM V
R
L
OUT
LOGIC
INPUT
SWITCH
OUTPUT
(V
OUT
50%
0
)
t
ON
0.9 x V
OUT
50%
t
OFF
0.1 x V
OUT
Low On-Resistance Analog Switches
+5V
0.1µF
V
CC
MAX14763
+10V
LOGIC
INPUT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
A1
A2
SEL
COM
GND
MAX14759/MAX14761/MAX14763
Above- and Below-the-Rails
Test Circuits/Timing Diagrams (continued)
+5V
R
L
10kI
LOGIC
INPUT
0V
V
OUT
C
L
SWITCH
OUTPUT
(V
)
OUT
50%
t
BBM
0.8 x V
OUT
Figure 3. Break-Before-Make
SIGNAL
GENERATOR
Figure 4. Off-Isolation
SWITCH
OPEN
A_
EN_/SEL
+5V
V
CC
MAX14759
MAX14761
MAX14763
GND
0.1µF
B_/COM
OFF-ISOLATION = 20LOG
R
L
C
V
B_/COM
L
V
A_
ANALYZER
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