19-3152; Rev 2; 1/06
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
General Description
The MAX4762–MAX4764/MAX4764A/MAX4765 dual
SPDT (single-pole/double-throw) switches feature nega-
tive 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-resistance, 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/MAX4764A/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
operate over the -40°C to +85°C extended tempera-
ture 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/MAX4764A/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–MAX4764/MAX4764A/MAX4765
Applications
Cell Phones
PDAs and Handheld 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
µMAX is a registered trademark and 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–MAX4764/
MAX4764A/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–MAX4764/MAX4764A/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/MAX4764A/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
-6
-50
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
+6
nA
+50
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/MAX4764A/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
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
(MAX4764A)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
(MAX4764A)
225
225
20
MIN
TYP
25
MAX
80
80
500
70
70
500
ns
ns
UNITS
MAX4762–MAX4764/MAX4764A/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
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_)
t
D
T
A
= +25°C
1
7
ns
Q
V
ISO
V
CT
PSRR
BW
THD
V
COM_
= 0V, 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
1.6
0.5
0.8
0.5
-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
Input-Logic High Voltage
V
IH
V
CC
= 4.2V to 5.5V
V
CC
= 2.7V to 5.5V (MAX4764A only)
V
CC
= 2.7V to 3.6V
V
Input-Logic Low Voltage
Input Leakage Current
Comparator Threshold
V
IL
I
IN
V
CC
= 4.2V to 5.5V
V
CC
= 2.7V to 5.5V (MAX4764A only)
V
IN_
= 0V or V
CC
V
µA
V
COMPARATOR (MAX4763/MAX4765)
_______________________________________________________________________________________
3
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
MAX4762–MAX4764/MAX4764A/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
V
CC
MAX4763/MAX4765
V
CC
= 5.5V, V
IN_
= 0V or
V
CC
Supply Current
I+
V
CC
= 5.5V, V
IN_
= 1.8V
V
CC
= 4.2V, V
IN_
= 1.8V
(Note 11)
MAX4762/MAX4764/
MAX4764A
MAX4764A
MAX4764A
1.8
5
0.01
5
2
5.5
10
1
10
5
µA
V
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
Note 1:
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/MAX4764A/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 11:
Guaranteed by design, not production tested.
4
_______________________________________________________________________________________
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
MAX4762–MAX4764/MAX4764A/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/MAX4764A
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4762 toc04
MAX4763/MAX4765
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4762 toc05
MAX4762–MAX4765
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)
MAX4762–MAX4765
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
MAX4762 toc07
MAX4762–MAX4765
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
V
CC
= 3.0V
30
t
ON
/t
OFF
(ns)
t
ON
20
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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