19-2044; Rev 1, 2/05
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
Features
The MAX4695 is a low-voltage, dual single-pole/doublethrow (SPDT) analog switch that operates from a single
+1.8V to +5.5V supply. The MAX4695 features breakbefore-make switching action with a tON = 30ns and
tOFF = 18ns at +3V.
When powered from a +2.7V supply, the device has a
60Ω (max) on-resistance (RON), with 3Ω (max) RON
matching and 10Ω (max) RON flatness. The digital logic
inputs are 1.8V-logic compatible from a +2.7V to +3.3V
supply. The MAX4695 is available in both a space-saving 3mm x 3mm 12-pin TQFN package and a
10-pin µMAX® package.
♦ 3mm x 3mm 12-Pin Thin QFN Package
♦ Guaranteed On-Resistance:
60Ω (max) (+2.7V supply)
25Ω (typ) (+5V supply)
♦ Guaranteed Match Between Channels: 3Ω (max)
♦ Guaranteed Flatness Over Signal Range:
10Ω (max)
♦ Guaranteed Low Leakage Currents:
100pA (max) at +25°C
♦ Switching Time: tON = 30ns, tOFF = 18ns
Applications
♦ +1.8V to +5.5V Single-Supply Operation
MP3 Players
Battery-Operated Equipment
Relay Replacement
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
♦ Rail-to-Rail Signal Handling
♦ -3dB Bandwidth: >300MHz
♦ Low Crosstalk: -82dB (1MHz)
♦ High Off-Isolation: -75dB (1MHz)
♦ Low 4pC Charge Injection
♦ THD: 0.03%
♦ +1.8V CMOS-Logic Compatible
Ordering Information
PART
µMAX is a registered trademark of Maxim Integrated
Products, Inc.
TEMP RANGE
PIN-PACKAGE
MAX4695ETC
-40°C to 85°C
12 TQFN
MAX4695EUB
-40°C to 85°C
10 µMAX
Pin Configurations
TOP VIEW
IN1
12
IN1 1
11
10
10 COM1
NO1 2
GND 3
COM1 N.C.
MAX4695
9
NC1
8
V+
NO2 4
7
IN2 5
6
µMAX
MAX4695
IN_
NO_
NC_
0
OFF
ON
1
ON
OFF
NC2
COM2
SWITCHES SHOWN FOR LOGIC "0" INPUT
NO1
1
GND
2
NO2
3
MAX4695
4
IN2
5
6
COM2
N.C.
9
NC1
8
V+
7
NC2
THIN QFN
________________________________________________________________ Maxim Integrated Products
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.
1
MAX4695
General Description
MAX4695
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
V+ ............................................................................-0.3V to +6V
All Other Pins (Note 1) .............................. -0.3V to (V+ + 0.3V)
Continuous Current COM_, NO_, NC_ .............................±20mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle) ...............................±40mA
ESD per Method 3015.7 .........................................................2kV
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 4.7mW/°C above +70°C) ......... 330mW
12-Pin Thin QFN (derate 16.7mW/°C above +70°C) 1333.3mW
Operating Temperature Range .......................... -40°C to +85°C
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10s) ............................... +300°C
Note 1: Signals on IN_, COM_, NO_, and NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
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—Single +3V Supply
(V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V and
TA = +25°C.) (Notes 2, 9)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
VCOM_,
VNO_, VNC__
0
+25°C
40
RON
V+ = +2.7V, ICOM_ = 1mA, VNO_ or
VNC_ = +1.4V
∆RON
V+ = +2.7V, ICOM_ = 1mA, VNO_ or
VNC_ = +1.4V
TMIN to TMAX
On-Resistance Flatness
(Note 4)
RFLAT (ON)
V+ = +2.7V, ICOM_ = 1mA, VNO_ or
VNC_ = +1V, +1.4V, +1.8V
TMIN to TMAX
NO_, NC_ Off-Leakage
Current (Note 5)
INO_(OFF),
INC_(OFF)
V+ = +3.3V, VCOM_ = +0.3V, +3V
VNO_ or VNC_ = +3V, +0.3V
+25°C
-0.1
TMIN to TMAX
-1
COM_ On-Leakage Current
(Note 5)
ICOM _(ON)
V+ = +3.3V, VCOM_ = +0.3V, +3V
VNO_ or VNC_ = +0.3V, +3V, or floating
+25°C
-0.2
TMIN to TMAX
-2
On-Resistance
On-Resistance Match
Between Channels (Note 3)
TMIN to TMAX
60
70
+25°C
0.5
3
4
+25°C
6
10
15
±0.01
+0.1
+1
±0.01
+0.2
+2
Ω
Ω
Ω
nA
nA
DYNAMIC
tON
VNO or VNC_ = +1.5V, RL = 300Ω,
CL = 35pF, Figure 2
TMIN to TMAX
Turn-Off Time
tOFF
VNO or VNC_ = +1.5V, RL = 300Ω,
CL = 35pF, Figure 2
TMIN to TMAX
Break-Before-Make Time
(Note 6)
tBBM
VNO or VNC_ = +1.5V, RL = 300Ω,
CL = 35pF, Figure 3
TMIN to TMAX
Q
VGEN = 0, RGEN = 0, CL = 1.0nF,
Figure 4
Charge Injection
2
+25°C
Turn-On Time
24
30
40
+25°C
12
18
20
+25°C
12
2
ns
ns
ns
4
pC
On-Channel -3dB Bandwidth
BW
Signal = 0dBm, 50Ω in and out,
Figure 5
300
MHz
Off-Isolation (Note 7)
VISO
f = 1MHz, RL = 50Ω, CL = 5pF,
Figure 5
-75
dB
_______________________________________________________________________________________
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
(V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +3V and
TA = +25°C.) (Notes 2, 9)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
Crosstalk (Note 8)
VCT
f = 1MHz, RL = 50Ω, CL = 5pF,
Figure 5
-82
dB
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, 2Vp-p, RL = 600Ω
0.03
%
NO_, NC_ Off-Capacitance
CNO_(OFF),
CNC_(OFF)
f = 1MHz, VNO_ or VNC_ = GND,
Figure 6
7
pF
COM_ On-Capacitance
CCOM_(ON)
f = 1MHz, VNO_ or VNC_ = GND,
Figure 6
19
pF
DIGITAL I/O
Input Logic High
VIH
Input Logic Low
1.4
V
VIL
Input Leakage Current
IIH, IIL
VIN_ = 0 or V+
0.5
V
-1
+1
µA
1.8
5.5
V
1
µA
SUPPLY
Power-Supply Range
V+
Power-Supply Current
I+
V+ = +5.5V, VIN_ = 0 or V+
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V and
TA = +25°C.) (Notes 2, 9)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
VCOM_,
VNO_, VNC_
0
+25°C
25
RON
V+ = +4.5V, ICOM_ = 1mA, VNO_ or
VNC_ = +3.5V
∆RON
V+ = +4.5V, ICOM_ = 1mA, VNO_ or
VNC_ = +3.5V
TMIN to TMAX
On-Resistance Flatness
(Note 4)
RFLAT (ON)
V+ = +4.5V, ICOM_ = 1mA, VNO_ or
VNC_ = +1V, +2.5V, +3.5V
TMIN to TMAX
NO_, NC_ Off-Leakage
Current (Note 5)
INO_(OFF),
INC_(OFF)
V+ = +5.5V, VCOM_ = +1V, +4.5V
VNO_ or VNC_ = +4.5V, +1V
+25°C
-0.1
TMIN to TMAX
-1
COM_ On-Leakage Current
(Note 5)
ICOM _(ON)
V+ = +5.5V, VCOM_ = +1V, +4.5V
VNO_ or VNC_ = +1V, +4.5V, or floating
+25°C
-0.2
TMIN to TMAX
-2
On-Resistance
On-Resistance Match
Between Channels (Note 3)
TMIN to TMAX
35
40
+25°C
0.5
2
3
+25°C
4
8
10
±0.01
+0.1
+1
±0.01
+0.2
+2
Ω
Ω
Ω
nA
nA
DYNAMIC
Turn-On Time
tON
VNO_, VNC_ = +3V, RL = 300Ω,
CL = 35pF, Figure 2
Turn-Off Time
tOFF
VNO_, VNC_ = +3V, RL = 300Ω,
CL = 35pF, Figure 2
+25°C
17
TMIN to TMAX
+25°C
TMIN to TMAX
25
30
8
15
20
ns
ns
_______________________________________________________________________________________
3
MAX4695
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
MAX4695
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V+ = +5V and
TA = +25°C.) (Notes 2, 9)
PARAMETER
Break-Before-Make Time
(Note 6)
Charge Injection
SYMBOL
tBBM
Q
CONDITIONS
VNO_, VNC_ = +3V, RL = 300Ω,
CL = 35pF, Figure 3
TA
MIN
+25°C
TMIN to TMAX
TYP
MAX
9
ns
2
VGEN = 0, RGEN = 0, CL = 1.0nF,
Figure 4
UNITS
8
pC
On-Channel -3dB Bandwidth
BW
Signal = 0dBm, 50Ω in and out,
Figure 5
300
MHz
Off-Isolation (Note 7)
VISO
f = 1MHz, RL = 50Ω, CL = 5pF,
Figure 5
-75
dB
Crosstalk (Note 8)
VCT
f = 1MHz, RL = 50Ω, CL = 5pF,
Figure 5
-82
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, 2Vp-p, RL = 600Ω
0.02
dB
%
DIGITAL I/O
Input Logic High
Input Logic Low
Input Leakage Current
VIH
2.0
VIL
IIH, IIL
VIN_ = 0 or V+
V
0.8
V
-1
+1
µA
1.8
5.5
V
1
µA
SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
V+ = +5.5V, VIN = 0 or V+
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Note 3: ∆RON = RON(MAX) - RON(MIN).
Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 5: Leakage currents are 100% tested at TA = +85°C. Limits across the full temperature range are guaranteed by correlation.
Note 6: Guaranteed by design.
Note 7: Off-Isolation = 20log10 (VCOM_ / VNO_), VCOM_ = output, VNO_ = input to off switch.
Note 8: Between any two switches.
Note 9: -40°C specifications are guaranteed by design.
4
_______________________________________________________________________________________
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
ON-RESISTANCE vs. VCOM
TA = +85°C
40
35
V+ = +2.5V
60
V+ = +3V
TA = -40°C
30
TA = +25°C
10
3
0
4
0
0
5
0.5
1.0
1.5
2.0
0.5
1.0
25
20
TA = +25°C
10,000
1000
SUPPLY CURRENT (pA)
TA = +85°C
2.0
2.5
3.0
SUPPLY CURRENT vs. TEMPERATURE
MAX4695 toc04
V+ = +5V
35
1.5
VCOM (V)
ON-RESISTANCE vs. VCOM
40
15
0
VCOM (V)
VCOM (V)
30
2.5
TA = -40°C
10
MAX4695 toc05
2
TA = -40°C
100
V+ = +5V
10
V+ = +3V
1
0.1
5
0
0
0.01
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
-40
-15
10
35
60
VCOM (V)
TEMPERATURE (°C)
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
ON-LEAKAGE CURRENT
vs. TEMPERATURE
1000
MAX4695 toc06
10,000
1000
100
85
MAX4695 toc07
1
RON (Ω)
100
10
ON-LEAKAGE (pA)
0
TA = +25°C
5
V+ = +5.5V
0
25
15
10
20
30
20
20
V+ = +5V
40
RON (Ω)
RON (Ω)
80
V+ = +3V
TA = +85°C
45
40
SUPPLY CURRENT (µA)
RON (Ω)
V+ = +2.5V
50
100
ON-RESISTANCE vs. VCOM
50
MAX4695 toc03
MAX4695 toc01
V+ = +1.8V
120
60
MAX4695 toc02
ON-RESISTANCE vs. VCOM
140
V+ = +5V
1
0.1
V+ = +3V
0.01
V+ = +5V
10
V+ = +3V
0.001
1
0.0001
0.00001
0.000001
0.1
0
1
2
3
LOGIC LEVEL (V)
4
5
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
MAX4695
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
V+ = +5V
10
V+ = +3V
1
MAX4695 toc09
50
VIN_ RISING
45
40
35
1.0
tON/OFF (ns)
100
1.5
LOGIC THRESHOLD VOLTAGE (V)
MAX4695 toc08
1000
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
MAX4695 toc10
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
OFF-LEAKAGE (pA)
VIN_ FALLING
0.5
30
tON
25
20
15
10
tOFF
5
0
0.1
-40
-15
10
35
60
0
1.5
85
2.0
2.5
3.0
3.5
4.0
5.0
4.5
5.5
2
3
4
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIME
vs. TEMPERATURE
CHARGE INJECTION vs. VCOM
tON, V+ = +3V
MAX4695 toc12
16
MAX4695 toc11
30
25
1
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
12
V+ = +5V
tOFF, V+ = +3V
8
Q (pC)
tON/OFF (ns)
20
15
4
V+ = +3V
10
tON, V+ = +5V
0
tOFF, V+ = +5V
5
-4
0
0
-40
-15
10
35
60
1
85
2
3
4
5
VCOM (V)
TEMPERATURE (°C)
0.1
MAX4695 toc13
0
ON-RESPONSE
-20
MAX4695 toc14
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
FREQUENCY RESPONSE
RL = 600Ω
THD + N (%)
-40
LOSS (dB)
MAX4695
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
OFF-ISOLATION
-60
CROSSTALK
V+ = +3V
-80
-100
V+ = +5V
-120
0.01
0.1
1
10
FREQUENCY (MHz)
6
100
1000
10
100
1k
10k
100k
FREQUENCY (Hz)
_______________________________________________________________________________________
5
6
Low-Voltage, 60Ω Dual
SPDT Analog Switch in Thin QFN
PIN
NAME
FUNCTION
µMAX
TQFN
1
12
IN1
Digital Control Input Switch 1
2
1
NO1
Analog Switch 1—Normally Open Terminal
3
2
GND
Ground
4
3
NO2
Analog Switch 2—Normally Open Terminal
5
4
IN2
Digital Control Input Switch 2
6
5
COM2
—
6, 10
N.C.
No Connection. Not internally connected.
Analog Switch 2—Common Terminal
7
7
NC2
Analog Switch 2—Normally Closed Terminal
8
8
V+
9
9
NC1
10
11
COM1
Positive Supply Voltage Input
Analog Switch 1—Normally Closed Terminal
Analog Common Switch 1
Detailed Description
The MAX4695 is a low-voltage, dual single-pole/double-throw (SPDT) analog switch that operates from a
single +1.8V to +5.5V supply. When powered from a
+2.7V supply, the device has a 60Ω (max) on-resistance (RON), with 3Ω (max) RON matching and 10Ω
(max) RON flatness. The digital logic inputs are 1.8Vlogic compatible from a +2.7V to +3.3V supply.
Applications Information
Digital Control Inputs
The MAX4695 logic inputs are 1.8V CMOS logic compatible for 3V operation and TTL compatible for 5V
operation of V+. Driving IN_ rail-to-rail minimizes power
consumption.
a small signal diode (D1) as shown in Figure 1. If the
analog signal can dip below GND, add D2. Adding
protection diodes reduces the analog range to a diode
drop (about 0.7V) below V+ (for D1), and a diode drop
above ground (for D2). On-resistance increases slightly
at low supply voltages. Maximum supply voltage (V+)
must not exceed +6V.
Adding protection diode D2 causes the logic threshold
to be shifted relative to GND. TTL compatibility is not
guaranteed when D2 is added.
Protection diodes D1 and D2 also protect against some
overvoltage situations. In the circuit in Figure 1, if the
supply voltage is below the absolute maximum rating,
and if a fault voltage up to the absolute maximum rating
is applied to an analog signal pin, no damage will result.
Analog Signal Levels
POSITIVE SUPPLY
Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in
on-resistance (see Typical Operating Characteristics).
The switches are bidirectional, so the NO_, NC_, and
COM_ pins can be either inputs or outputs.
D1
V+
MAX4695
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings because stresses beyond the listed ratings
may cause permanent damage to devices.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not
current limited. If this sequencing is not possible, and if
the analog inputs are not current limited to
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