19-3152; Rev 0; 1/04
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
General Description
The MAX4762–MAX4765 dual SPDT (single-pole/double-
throw) switches feature negative signal capability that
allows signals below ground to pass through without
distortion. These analog switches operate from a single
+1.8V to +5.5V supply and have low 0.6Ω on-resis-
tance, making them ideal for switching audio signals.
The MAX4763/MAX4765 include a comparator that can
be used for headphone detection or a mute/send key
function. The MAX4764/MAX4765 have an internal shunt
switch to automatically discharge any capacitance at the
NO and NC connection points. This reduces click-and-
pop sounds that occur when switching audio signals
between precharged points.
These SPDT switches are available in space-saving
µMAX, TDFN, thin QFN, and UCSP
™
packages and oper-
ate over the -40°C to +85°C extended temperature range.
Features
♦
Distortion-Free Negative Signal Throughput Down
to V
CC
- 5.5V
♦
Comparator for Headphone or Mute Detection
(MAX4763/MAX4765)
♦
Internal Shunt Resistor Reduces Click/Pop
(MAX4764/MAX4765)
♦
Low On-Resistance (R
ON
)
0.6Ω at +2.7V Supply
♦
0.25Ω On-Resistance Flatness
♦
0.05Ω On-Resistance Matching
♦
+1.8V to +5.5V Supply Voltage
♦
-70dB Crosstalk (100kHz)
♦
-65dB Off-Isolation (100kHz)
♦
0.01% Total Harmonic Distortion
♦
Available in µMAX, TDFN, Thin QFN, and UCSP
Packages
MAX4762–MAX4765
Applications
Cell Phones
PDAs and Hand-Held Devices
Notebook Computers
MP3 Players
Ordering Information
PART
MAX4762ETB
MAX4762EUB
MAX4762EBC-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
10 TDFN
10 µMAX
12 UCSP-12
TOP
MARK
ACG
—
ABU
UCSP is a trademark of Maxim Integrated Products, Inc.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
(BUMP SIDE DOWN)
MAX4762/MAX4764
MAX4763/MAX4765
C1
NO2
C2
COM2
C3
NC2
C4
IN2
B1
V
CC
A1
NO1
A2
COM1
A3
NC1
C1
NO2
C2
COM2
C3
NC2
C4
IN2
B1
V
CC
B2
CMPO
B3
CMP-
B4
GND
A1
NO1
A2
COM1
A3
NC1
A4
IN1
IN_
0
1
MAX4762–MAX4765
NO_
OFF
ON
NC_
ON
OFF
B4
GND
A4
IN1
SWITCHES SHOWN FOR LOGIC "0" INPUT
UCSP
UCSP
Pin Configurations/Functional Diagrams/Truth Table continued at end of data sheet.
________________________________________________________________
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.
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
MAX4762–MAX4765
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
V
CC
, IN_, CMP-......................................................-0.3V to +6.0V
COM_, NO_, NC_ ...............................(V
CC
- 6V) to (V
CC
+ 0.3V)
CMPO .........................................................-0.3V to (V
CC
+ 0.3V)
Closed-Switch Continuous Current COM_, NO_, NC_......±150mA
Open-Switch Continuous Current NO_, NC_
(MAX4764/MAX4765) ...................................................±30mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 50% duty cycle)................................±300mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle)................................±400mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin TDFN (derate 24.4mW/°C above +70°C) .......1951mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
12-Bump UCSP (MAX4762/MAX4764)
(derate 5.6mW/°C above +70°C) .............................449mW
12-Bump UCSP (MAX4763/MAX4765)
(derate 6.5mW/°C above +70°C) .............................519mW
12-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1349mW
ESD Method 3015.7 .............................................................±2kV
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
Bump Temperature (soldering)
Infrared (15s) ...............................................................+220°C
Vapor Phase (60s) .......................................................+215°C
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
= +2.7V 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 otherwise
noted.) (Note 1)
PARAMETER
ANALOG SWITCH
Analog Signal Range
(Note 2)
V
NO_
,
V
NC_
,
V
COM_
R
ON(NC),
R
ON(NO)
V
CC
= 2.7V; V
NC_
or V
NO_
=
V
CC
- 5.5V, -1V, 0V, 1V, 2V, V
CC
;
I
COM_
= 100mA
V
CC
= 2.7V, V
NC_
or V
NO_
= 0V,
I
COM
= 100mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-2
-10
-3
-25
25
0.25
0.05
V
CC
-
5.5
0.6
V
CC
0.85
0.95
0.1
0.15
0.4
0.45
50
+2
nA
+10
+3
nA
+25
Ω
Ω
Ω
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
(Notes 3 and 4)
On-Resistance Match
Between Channels
(Notes 3, 4, and 5)
On-Resistance Flatness
(Notes 4 and 6)
Shunt Switch Resistance
∆R
ON
V
CC
= 2.7V; V
NC_
or V
NC
=
R
FLAT(NC)
-1V, 0V, 1V, 2V, V
CC
;
I
COM_
= 100mA
R
SH
MAX4764/MAX4765 only,
I
NO_
or I
NC_
= 10mA, V
CC
= 2.7V
Ω
NO_, NC_
Off-Leakage Current
(Notes 8 and 9)
MAX4762/MAX4763 only (Note 7),
I
NO_(OFF),
V
CC
= 2.7V, switch open;
I
NC_(OFF)
V
NC_
or V
NO_
= -2.5V, +2.5V;
V
COM_
= +2.5V, -2.5V
V
CC
= 2.7V, switch closed;
V
NC_
or V
NO_
= -2.5V, +2.5V, or
I
COM_(ON)
floating; V
COM_
= -2.5V, +2.5V, or
floating
COM_ On-Leakage Current
(Notes 8 and 9)
2
_______________________________________________________________________________________
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
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 otherwise
noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX4762–MAX4765
DYNAMIC CHARACTERISTICS
V
CC
= 2.7V, V
NO
= 1.5V; for NO_,
V
IN_
= 0V to V
CC
; for NC_, V
IN_
=
V
CC
to 0V; R
L
= 300Ω, C
L
= 35pF,
Figure 2
V
CC
= 2.7V, V
NC
= 1.5V; for NO_,
V
IN_
= V
CC
to 0V; for NC_, V
IN_
= 0V
to V
CC
; R
L
= 300Ω, C
L
= 35pF,
Figure 2
V
CC
= 2.7V, V
N_
= 1.5V, for NO_,
V
IN_
= V
CC
to 0V; for NC_, V
IN_
= 0V
to V
CC
; R
L
= 300Ω, C
L
= 35pF,
Figure 3
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
20
25
80
ns
80
70
ns
70
Turn-On Time
t
ON
Turn-Off Time
t
OFF
Break-Before-Make
Time Delay
Charge Injection
Off-Isolation (Note 10)
Crosstalk
Power-Supply Rejection
Ratio
On-Channel -3dB
Bandwidth
Total Harmonic Distortion
NO_, NC_ Off-Capacitance
COM On-Capacitance
DIGITAL I/O (IN_)
Input Logic High Voltage
Input Logic Low Voltage
Input Leakage Current
Comparator Threshold
t
D
T
A
= +25°C
1
7
ns
Q
V
ISO
V
CT
PSRR
BW
THD
V
COM_
= 0V, R
S
= 0Ω, C
L
= 1.0nF, Figure 4
f = 100kHz, V
COM_
= 1V
RMS
, R
L
= 50Ω, C
L
= 5pF,
Figure 5
f = 100kHz, V
COM_
= 1V
RMS
, R
L
= 50Ω, C
L
= 5pF,
Figure 5
f = 10kHz, V
COM_
= 1V
RMS
, R
L
= 50Ω, C
L
= 5pF
Signal = 0dBm, R
L
= 50Ω, C
L
= 5pF, Figure 5
f = 20Hz to 20kHz, V
COM_
= 0.5V
P-P
, DC Bias = 0,
R
L
= 32Ω
150
-65
-70
60
27
0.01
50
200
1.4
2.0
0.5
0.8
-1
V
CC
/ 3
+1
pC
dB
dB
dB
MHz
%
pF
pF
C
NO_(OFF)
f = 1MHz, V
COM_
= 0.5V
P-P
, DC Bias = 0, Figure 6
C
NC_(OFF)
C
COM_(ON)
f = 1MHz, V
COM_
= 0.5V
P-P
, DC Bias = 0, Figure 6
V
CC
= 2.7V to 3.6V
V
CC
= 4.2V to 5.5V
V
CC
= 2.7V to 3.6V
V
CC
= 4.2V to 5.5V
V
IN_
= 0V or V
CC
V
IH
V
IL
I
IN
V
V
µA
V
COMPARATOR (MAX4763/MAX4765)
_______________________________________________________________________________________
3
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
MAX4762–MAX4765
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 otherwise
noted.) (Note 1)
PARAMETER
Comparator Output High
Voltage
Comparator Output Low
Voltage
Comparator Input Leakage
Current
Comparator Switching Time
POWER SUPPLY
Power-Supply Range
Supply Current
V
CC
I+
V
CC
= 5.5V, V
IN_
= 0V or
V
CC
MAX4763/MAX4765
MAX4762/MAX4764
1.8
5
0.01
5.5
10
1
V
µA
SYMBOL
I
SOURCE
= 1mA
I
SINK
= 1mA
V
CMP-
= 0 to 2.7V
V
CC
= 2.7V, V
CMP-
= 0V to V
CC
,
from 50% of V
CMP-
to 50% of V
CMPO
-100
1
CONDITIONS
MIN
V
CC
-
0.4V
0.4V
+100
2
TYP
MAX
UNITS
V
V
nA
µs
UCSP and TDFN parts are 100% tested at T
A
= +25°C only, and guaranteed by design over the specified temperature range.
Thin QFN parts are 100% tested at T
A
= +85°C only, and guaranteed by design over the specified temperature range.
Note 2:
Signals on COM_, NO_, or NC_ exceeding V
CC
are clamped by internal diodes. Limit forward-diode current to maximum
current rating.
Note 3:
Thin QFN and UCSP are guaranteed by design; not production tested.
Note 4:
I
COM
for UCSP is 10mA.
Note 5:
∆R
ON
= R
ON(MAX)
- R
ON(MIN).
Note 6:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7:
MAX4764/MAX4765 have an internal shunt switch when in off-state, which determines OFF current.
Note 8:
Leakage parameters are 100% tested at maximum-rated hot operating temperature and guaranteed by design at T
A
= +25°C.
Note 9:
UCSP parts are guaranteed by design.
Note 10:
Off-isolation = 20log
10
(V
COM
/ V
NO
), V
COM
= output, V
NO
= input to off switch.
Note 1:
4
_______________________________________________________________________________________
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
MAX4762–MAX4765
Typical Operating Characteristics
(V
CC
= 3.0V, T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. COM VOLTAGE
MAX4762 toc01
ON-RESISTANCE vs. COM VOLTAGE
MAX4762 toc02
ON-RESISTANCE vs. COM VOLTAGE
V
CC
= 3.0V
1.0
ON-RESISTANCE (Ω)
0.8
0.6
0.4
0.2
0
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
MAX4762 toc03
6
5
ON-RESISTANCE (Ω)
4
3
2
1
0
-4
-3
-2
-1
0
1
2
3
4
5
COM VOLTAGE (V)
V
CC
= 2.0V
1.2
V
CC
= 5.0V
1.0
ON-RESISTANCE (Ω)
0.8
0.6
0.4
T
A
= -40°C
0.2
0
-1
0
1
2
3
4
5
COM VOLTAGE (V)
1.2
V
CC
= 1.8V
T
A
= +85°C
T
A
= +25°C
V
CC
= 2.3V
V+ = 2.5V
V+ = 3.0V
V+ = 5.0V
-3
-2
-1
0
1
2
3
COM VOLTAGE (V)
MAX4762/MAX4764
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4762 toc04
MAX4763/MAX4765
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4762 toc05
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX4762 toc06
100
6
5
SUPPLY CURRENT (nA)
4
3
2
1
0
70
60
50
t
ON
/t
OFF
(ns)
40
30
t
OFF
20
10
0
t
ON
80
SUPPLY CURRENT (nA)
60
40
20
0
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
SUPPLY VOLTAGE (V)
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
V
CC
= 3.0V
30
t
ON
/t
OFF
(ns)
t
ON
20
MAX4762 toc07
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4762 toc08
CHARGE INJECTION
vs. V
COM
C
L
= 1nF
200
CHARGE INJECTION (pC)
V
CC
= 5.0V
100
V
CC
= 2.0V
0
MAX4762 toc09
40
2.0
V
IN
RISING
1.6
LOGIC THRESHOLD (V)
300
1.2
V
IN
FALLING
0.8
10
t
OFF
0.4
-100
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
0
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
SUPPLY VOLTAGE (V)
-200
-3
-2
-1
0
1
V
COM
(V)
2
3
4
5
_______________________________________________________________________________________
5
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