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MAX14762
User Manual
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MAXIM MAX14760, MAX14762, MAX14764 User Manual

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EVALUATION KIT AVAILABLE
19-6052; Rev 0; 9/11
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches

General Description

The MAX14760/MAX14762/MAX14764 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 MAX14760 is a single-pole/single-throw (SPST) ana­log switch, while the MAX14762 is a dual-SPST analog switch. The MAX14764 is a single-pole/double-throw (SPDT) analog switch.
The MAX14760/MAX14762/MAX14764 feature 20I (max) on-resistance with a Q10nA (max) on-leakage current for MAX14760/MAX14762.
The MAX14760/MAX14764 are available in 8-pin (3mm x 3mm) TDFN packages. The MAX14762 is available in a 10-pin (3mm x 3mm) TDFN package. These devices are specified over the -40NC to +85NC extended operating temperature range.
Ordering Information/Selector Guide appears at end of data
sheet.

Benefits and Features

S Simplify Power-Supply Requirements
3.0V to 5.5V Supply Range -25V to +25V Signal Range
S High Performance
Q10nA (max) On-Leakage Current (MAX14760/ MAX14762)
20I (max) On-Resistance Low On-Resistance Flatness, 58mI (typ) Thermal Shutdown Protection -40NC to +85NC Operating Temperature Range High Bandwidth:115MHz (typ)
S Save Space on Board
Small 8-Pin and 10-Pin TDFN Packages

Applications

Industrial Measurement Systems
Instrumentation Systems
Opto-Relay Replacement
Medical Systems
ATE Systems
Audio Signal Routing and Switching

Functional Diagrams/Truth Tables

V
CC
MAX14760
V
EN
P
A
SUPPLY
GENERATION
GND
EN A
OPEN
0
1
CLOSED
V
N
B
V
P
A1
EN1
A2
EN2
EN1 A1
0
1
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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.
GENERATION
CLOSED
OPEN
V
CC
MAX14762
SUPPLY
GND
V
N
B1
B2
EN2 A2
OPEN
0
1
CLOSED
V
CC
MAX14764
V
P
A1
A2
SEL
SUPPLY
GENERATION
GND
SEL A1 A2
CLOSED OPEN
0
1
OPEN CLOSED
V
N
COM
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage 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, A1, A2, B, 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 ......................................................... Q25mA
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 TDFN
Junction-to-Ambient Thermal Resistance (qJA) ...........41°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.
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 TDFN
Junction-to-Ambient Thermal Resistance (qJA) ...........41°C/W
Junction-to-Case Thermal Resistance (qJC) ..................9°C/W

ELECTRICAL CHARACTERISTICS

(VCC = 3.0V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 5V, and TA = +25NC.) (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 DR
A, A1, A2 Off-Leakage Current I
COM, B, B1, B2 Off-Leakage Current
V
V
A_, VB_
A_(OFF)VA_
I
COM(OFF)
I
B_(OFF)
CC
I
A
CC
COM,
ON
ON
V
= V
EN_
VCC P 4.7V
VCC > 4.7V
Switch open or closed -25 +25 V
I
or IB_ = Q25mA, VA_= Q25V 8 20
COM
-25V < VA_< +25V, I
= +25V, V
V
COM
(MAX14764)
,
VB_ = 15V, V MAX14762)
COM
or VB_ = 15V, V
A_
V
V
V
COM
or VB_= 0V, Figure 1 -30 +30 nA
A_
= 0V, Figure 1 (MAX14760/
CC
= VCC/2 4.1 10
EN_
= V
EN_
CC
= VCC/2 2.5 6
EN_
or IB_ = Q25mA 58 mI
= 0V, Figure 1
3.0 5.5 V
-25 +25 mA
4.1 10
2.5 6
-10 +10
-10 +10
mA
I
nA
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MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.0V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 5V, and TA = +25NC.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
= Q25V, B/COM is unconnected,
A_
On-Leakage Current I
DIGITAL LOGIC
Input-Voltage Logic-Low V
Input-Voltage Logic-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 RS = 50I, RL = 1kI , V
Total Harmonic Distortion THD+N RS = RL = 1kI, f = 20Hz to 20kHz 0.005 %
Charge Injection Q VA_= GND, CL = 1nF, Figure 7 19 pC
Input Capacitance C
THERMAL PROTECTION
Thermal Shutdown Temperature t
Shutdown Temperature Hysteresis t
ESD PROTECTION
All Pins Human Body Model Q2 kV
Note 2: All devices are 100% production tested at TA = +25°C. 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%.
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ON
PWRONVA_
ON
OFF
BBM
ISO
HYST
SHUT
Figure 1 (MAX14760/MAX14762)
V
= Q25V, B/COM is unconnected,
A_
Figure 1 (MAX14764)
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
= Q10V, CVP = CVN = 1FF (Note 3) 320 ms
V
= Q10V, RL = 10kI, Figure 2
A_
(MAX14760/MAX14762)
V
= Q10V, RL = 10kI, Figure 2
A_
(MAX14764)
(Figure 2) 110 400 Fs
V
= 1V
A_
Figure 3 (MAX14764)
VA_= 1V CL = 15pF, Figure 4
RS = RL = 50I, f = 100kHz, V
CT
Figure 5 (MAX14764)
At A, A1, A2, B, B1, B2, and COM pins 32 pF
IN
, RL = 10kI,
RMS
, f = 100kHz, RL = 50I,
RMS
= 1V
A_
= 1V
COM
P-P,
RMS
Figure 6 115 MHz
-10 +10
-30 +30
-1 +1 FA
100 200 Fs
1.04 1.6 ms
740 Fs
-77 dB
,
-92 dB
+154 NC
24 NC
nA
V
V
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches

Test Circuits/Timing Diagrams

+5V
V
CC
MAX14760 MAX14762 MAX14764
A_
EN_/SEL
SWITCH
OPEN
OFF-LEAKAGE CURRENT ON-LEAKAGE CURRENT
GND

Figure 1. Leakage Current Measurement

+5V
0.1µF
B_/COM
0.1µF
+5V
0.1µF
V
CC
MAX14760 MAX14762 MAX14764
GND
B_/COM
UNCONNECTED
AA
SWITCH
CLOSED
A_
A
EN_/SEL
LOGIC INPUT

Figure 2. Switching Time

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A_+10V
EN_/SEL
V
CC
MAX14760 MAX14762 MAX14764
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
+5V
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
0.1µF
+10V
LOGIC INPUT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
A1
A2
SEL

Figure 3. Break-Before-Make

SIGNAL
GENERATOR
V
CC
MAX14764
GND
COM
SWITCH
OPEN
R
L
10kI
A_
EN_/SEL
V
OUT
C
L
+5V
V
CC
MAX14760 MAX14762 MAX14764
GND
+5V
LOGIC INPUT
SWITCH OUTPUT
(V
OUT
0.1µF
B_/COM
50%
0V
0.8 x V
OUT
)
t
BBM
C
L
VB_/COM
V
A_
ANALYZER
OFF-ISOLATION = 20LOG
R
L

Figure 4. Off-Isolation

����������������������������������������������������������������� Maxim Integrated Products 5
SIGNAL
GENERATOR
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
+5V
0.1µF
V
COM
GND SEL
CC
MAX14764
CROSSTALK = 20LOG
A2
R
L
A1
50I
C
V
L
COM
V
A2
ANALYZER

Figure 5. Crosstalk

+5V

Figure 6. Insertion Loss

EN_/SEL
+5V
V
CC
MAX14760 MAX14762 MAX14764
GND
0.1µF
B_/COM
V
NETWORK
ANALYZER
R
MEAS
R
L
S
A_
V
OUT
R
S
REF
R
FREQUENCY RESPONSE = 20LOG
V
IN
L
V
OUT
IN
����������������������������������������������������������������� Maxim Integrated Products 6
LOGIC INPUT
A_
EN_/SEL
+5V
V
CC
MAX14760 MAX14762 MAX14764
GND
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
0.1µF
+5V
B_/COM
LOGIC
INPUT
V
OUT
= 1nF
SWITCH OUTPUT
(V
OUT
)
C
L
OFF
0V
ON OFF
Q = C
× DV
L
DV
OUT
OUT

Figure 7. Charge Injection

(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
20
VCC = 3.3V, I
16
12
(I)
ON
R
8
4
0
-25 25
B_ /COM
V
= 10mA
B_ /COM
B_ /COM
(V)

Typical Operating Characteristics

ON-RESISTANCE vs. V
20
VCC = 5V, I
MAX14760 toc01
16
12
(I)
ON
R
8
4
0
20151050-5-10-15-20
-25 25
B_ /COM
= 10mA
V
B_ /COM
B_ /COM
MAX14760 toc02
20151050-5-10-15-20
(V)
ON-RESISTANCE vs. TEMPERATURE
20
VCC = 5V, I
16
12
(I)
ON
R
TA = +25°C
8
4
0
-25 25
B_ /COM
TA = -40°C
= 10mA
V
B_ /COM
TA = +85°C
(V)
MAX14760 toc03
20151050-5-10-15-20
����������������������������������������������������������������� Maxim Integrated Products 7
(TA = +25°C, unless otherwise noted.)
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Typical Operating Characteristics (continued)
LEAKAGE CURRENT vs. TEMPERATURE
10
MAX14762, VB_ OR VA_ = +25V
8
6
4
LEAKAGE CURRENT (nA)
2
0
-40 85
OFF-LEAKAGE
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
5.0 MAX14762, V
4.0
3.0
2.0
SUPPLY CURRENT (mA)
1.0
EN1
= V
= VCC = 5V
EN2
ON-LEAKAGE
603510-15
MAX14760 toc04
MAX14760 toc06
CHARGE INJECTION vs. V
50
MAX14762
40
30
V
B_ /COM
TA = +25°C
(V)
20
CHARGE INJECTION (pC)
10
0
-25 25
CROSSTALK vs. FREQUENCY
0
MAX14762
-20
-40
-60
CROSSTALK (dB)
-80
-100
B_ /COM
MAX14760 toc05
TA = +85°C
TA = -40°C
20151050-5-10-15-20
MAX14760 toc07
0
-40 85 TEMPERATURE (°C)
603510-15
-120
0.01 100 FREQUENCY (MHz)
1010.1
OFF-ISOLATION vs. FREQUENCY
0
MAX14762
-20
-40
-60
OFF-ISOLATION (dB)
-80
-100
0.01 100 FREQUENCY (MHz)
1010.1
MAX14760 toc08
����������������������������������������������������������������� Maxim Integrated Products 8
(TA = +25°C, unless otherwise noted.)
INSERTION LOSS vs. FREQUENCY
0
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Typical Operating Characteristics (continued)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
0.020
MAX14762, RL = 1kI
-4
-8
-12
INSERTION LOSS (dB)
-16
-20
0.01 100 FREQUENCY (MHz)
PSRR vs. FREQUENCY
0
MAX14762
-20
-40
PSRR (dB)
-60
-80
-100
0.01 100
FREQUENCY (kHz)
MAX14760 toc09
0.015
0.010
THD+N (%)
0.005
1010.1
MAX14760 toc11
1010.1
0
0.01 100 FREQUENCY (kHz)
TURN-ON/OFF TIME vs. V
120
100
80
60
40
TURN-ON/OFF TIME (µs)
20
0
V
B_ /COM
t
ON
t
OFF
(V)
1010.1
B_ /COM
MAX14760 toc10
MAX14760 toc12
20151050-5-10-15-20-25 25
����������������������������������������������������������������� Maxim Integrated Products 9
TOP VIEW
EN VPA
865
N.C.
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches

Pin Configurations

EN1
EN2
A1 V
7
10 8 7
9
A2
P
6
SEL VPA2
A1
865
7
MAX14760
+
134
2
V
CC
VNBGND
*EP
MAX14762
+
2
134
V
CC
B1 V
GND B2
*EP
5
N
TDFN
*CONNECT EXPOSED PAD (EP) TO VN.
PIN
MAX14760 MAX14762 MAX14764
1 1 1 V
NAME FUNCTION
Positive-Supply Voltage Input. Bypass VCC to GND with a 0.1FF ceramic
CC
capacitor placed as close as possible to the devic
2 2 2 GND Ground
3 4 3 V
Negative Voltage Output. Bypass VN to GND with a 1FF ceramic capacitor
N
placed as close as possible to the device.
4 — — B Analog Switch Common Terminal
— — 4 COM Analog Switch Common Terminal
5 — — A Analog Switch Normally Open Terminal
6 7 6 V
Positive Voltage Output. Bypass VP to GND with a 1FF ceramic capacitor
P
placed as close as possible to the device.
7 — — N.C. No Connection. Leave unconnected.
8 — — EN
Switch Control Input. Drive EN high to close the switch or drive EN low to open the switch.
— 8 7 A1 Analog Switch 1 Normally Closed Terminal
MAX14764
+
134
2
V
CC
VNCOMGND

Pin Description

e.
*EP
���������������������������������������������������������������� Maxim Integrated Products 10
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Pin Description (continued)
PIN
MAX14760 MAX14762 MAX14764
— 3 — B1 Analog Switch 1 Common Terminal
— 6 5 A2 Analog Switch 2 Normally Open Terminal
— 5 — B2 Analog Switch 2 Common Terminal
— 10 — EN1
— 9 — EN2
— — 8 SEL
— — — EP
NAME FUNCTION
Switch 1 Control Input. Drive EN1 high to open switch 1 or drive EN1 low to close switch 1.
Switch 2 Control Input. Drive EN2 high to close switch 2 or drive EN2 low to open switch 2.
Switch Control Input. Drive SEL low to connect the COM terminal to A1 or drive SEL high to connect the COM terminal to A2.
Exposed Pad. Internally connected to VN; not intended as an electrical connection. Leave exposed pad unconnected.

Detailed Description

The MAX14760/MAX14762/MAX14764 analog switches are capable of handling signals above and below their rails. These devices operate from a single +3.0V to +5.5V supply and support signals in the -25V to +25V range.

Analog Signal Range

The devices switch signals in the range from -25V to +25V that are above and below their rails. The on-resis­tance for these devices exhibits a high degree of flatness (58mI) over the whole input voltage range of -25V to +25V. The analog switches allow bidirectional current flow, so A, A1, A2, B, B1, B2, and COM, can be used as either inputs or outputs.
Ensure that negative signals are not present on the A_, B_, or COM inputs before 1 second has passed after applying VCC.

Applications Information

Power-Up Conditions

Bypass Capacitors

Bias-stabilizing capacitors are required on the VP and V pins. 1FF ceramic capacitors are suggested for effective operation. VP and VN are not intended as a power supply for other circuitry.
���������������������������������������������������������������� Maxim Integrated Products 11
N
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches

Ordering Information/Selector Guide

PART TEMP RANGE PIN-PACKAGE FUNCTION
MAX14760ETA+ MAX14762ETB+ MAX14764ETA+
+Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad.
-40NC to +85NC
-40NC to +85NC
-40NC to +85NC

Chip Information

PROCESS: BiCMOS
RON (MAX) (I)
8 TDFN-EP* 1 x SPST 20
10 TDFN-EP* 2 x SPST 20
8 TDFN-EP* 1 x SPDT 20

Package Information

For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
8 TDFN T833+2
10 TDFN T1033+1
PACKAGE
CODE
OUTLINE
NO.
21-0137 90-0059 21-0137 90-0003
PATTERN NO
LAND
���������������������������������������������������������������� Maxim Integrated Products 12
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches

Revision History

REVISION
NUMBER
0 9/11 Initial release —
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 13
©
2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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