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19-1637; Rev 0; 2/00
Low-Voltage, Single-Supply, SPDT Analog Switch in SC70
General Description
The MAX4599 single-pole/double-throw (SPDT) switch operates from a +2.0V to +5.5V single supply. It offers 60 max on-resistance (RON) at +5V and fast switching times (tON = 30ns max, tOFF = 25ns max). The MAX4599 features excellent RON flatness (4 max) and matching (1 max) between channels. This device also offers 5pC max charge injection. The MAX4599 is available in tiny 6-pin SC70 and SOT23 packages. o Available in 6-Pin SC70 Package o 60 max (40 typ) On-Resistance o 1 max (0.2 typ) RON Matching Between Channels o 4 max (2.5 typ) RON Flatness o Fast Switching: tON = 30ns (max) tOFF = 25ns (max) o Guaranteed 5pC max Charge Injection o +2.0V to +5.5V Single-Supply Operation o 200MHz -3dB Bandwidth o Low 0.5nA Leakage Current at +25C
Features
MAX4599
Applications
Battery-Operated Equipment Audio and Video Signal Routing Cellular Phones Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communications Circuits
o Break-Before-Make Switching o TTL/CMOS-Logic Compatible o -76dB Off-Isolation at 1MHz o 0.12% Total Harmonic Distortion
Ordering Information
PART MAX4599EXT-T MAX4599EUT-T TEMP. RANGE -40C to +85C -40C to +85C PINPACKAGE 6 SC70-6 6 SOT23-6 TOP MARK AAF AAHC
Pin Configuration/Functional Diagram/Truth Table
MAX4599
IN V+ GND 1 2 3 6 5 4 NO COM NC
SC70-6/SOT23-6
MAX4599 IN NC NO 0 ON OFF 1 OFF ON SWITCH IS SHOWN FOR "0" INPUT.
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1
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70 MAX4599
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to GND V+ .........................................................................-0.3V to +6V IN, COM, NO, NC (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current (any terminal)....................................20mA Peak Current, COM, NO, NC (pulsed at 1ms, 10% duty cycle)..................................40mA Continuous Power Dissipation (TA = +70C) 6-Pin SC70-6 (derate 3.1mW/C above +70C)...........245mW 6-Pin SOT23-6 (derate 7.1mW/C above +70C) ........571mW Operating Temperature Range MAX4599E_T ...................................................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Note 1: Signals on NO, NC, COM, or IN 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 +5V Supply
(V+ = +4.5V to +5.5V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) VCOM, VNO, VNC RON RON V+ = 4.5V, ICOM = 1mA, VNO or VNC = 3.5V V+ = 4.5V, ICOM = 1A, VNO or VNC = 3.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -0.5 -5 -1 -10 0.01 0.01 2.5 0.2 0 40 V+ 60 65 1 2 4 5 0.5 nA 5 1 nA 10 V SYMBOL CONDITIONS MIN TYP MAX UNITS
V+ = 4.5V; ICOM = 1mA; RFLAT(ON) VNO or VNC = 1V, 2.0V, 3.5V INO(OFF), INC(OFF) V+ = 5.5V; VCOM = 1V, 4.5V; VNO or VNC = 4.5V, 1V V+ = 5.5V; VCOM = 1V, 4.5V; VNO or VNC = 1V, 4.5V, or floating
NO, NC Off-Leakage Current (Note 6)
COM On-Leakage Current (Note 6) DIGITAL I/O Input Logic High Input Logic Low DYNAMIC Turn-On Time
ICOM(ON)
VIH VIL
2.4 0.8
V V
tON
VNO, VNC = 3V; RL = 1k; CL = 35pF; Figure 2
TA = +25C TA = TMIN to TMAX
25
30 ns 40
2
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ =+4.5V to +5.5V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER Turn-Off Time SYMBOL tOFF CONDITIONS VNO, VNC = 3V; RL = 1k; CL = 35pF; Figure 2 VNO, VNC = 3V; RL = 1k; CL = 35pF; Figure 3 Signal = 0dBm, 50 in and out, Figure 5 CL = 5pF; RL = 50; f = 1MHz; VNO, VNC = 1VRMS; Figure 5 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 4 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C 1 200 MHz 10 ns MIN TYP 20 MAX 25 ns 30 UNITS
MAX4599
Break-Before-Make
tBBM
On-Channel -3dB Bandwidth
BW
Off-Isolation (Note 7)
VISO
TA = +25C
-76
dB
Charge Injection (Note 6) NO, NC Off-Capacitance COM Off-Capacitance
Q
TA = +25C TA = +25C TA = +25C
3 8 8
5
pC pF pF
CNO(OFF), VNO, VNC = GND; CNC(OFF) f = 1MHz; Figure 6 CCOM(OFF) VCOM = GND, f = 1MHz, Figure 6 VCOM = VNO, VNC = GND, f = 1MHz, Figure 6 RL = 600, VIN = 5Vp-p, f = 20Hz to 20kHz
Switch On-Capacitance
C(ON)
TA = +25C
20
pF
Total Harmonic Distortion SUPPLY Power-Supply Range Positive Supply Current
THD
TA = +25C
0.12
%
V+ I+ V+ = 5.5V, VIN = 0 or V+
2.0 -1 0.001
5.5 1
V A
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.6V, VINH = +2.0V, VINL = +0.8V, TA =TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance DIGITAL I/O Input Logic High Input Logic Low VIH VIL 2.0 0.8 V V VCOM, VNO, VNC RON V+ = 2.7V, ICOM = 1mA, VNO or VNC = 1V TA = +25C TA = TMIN to TMAX 0 60 V+ 95 105 V SYMBOL CONDITIONS MIN TYP MAX UNITS
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70 MAX4599
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.6V, VINH = +2.0V, VINL = +0.8V, TA =TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER DYNAMIC Turn-On Time tON VNO, VNC = 2V; RL = 1k; CL = 35pF; Figure 2 VNO, VNC = 2V; RL = 1k; CL = 35pF; Figure 2 VNO, VNC = 2V; RL = 1k; CL = 35pF; Figure 3 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 4 V+ = 3.6V, VIN = 0 or V+ TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C 1 2 5 pC 13 ns 30 40 45 ns 55 35 ns 40 SYMBOL CONDITIONS MIN TYP MAX UNITS
Turn-Off Time
tOFF
Break-Before-Make
tBBM
Charge Injection (Note 6) SUPPLY Positive Supply Current
Q
I+
-1
0.001
1
A
ELECTRICAL CHARACTERISTICS--Single +2.5V Supply
(V+ = +2.5V, VINH = +2.0V, VINL = +0.6V, TA =TMIN to TMAX, unless otherwise noted.) (Notes 2, 3) PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance Input Logic High Input Logic Low DYNAMIC Turn-On Time tON VNO, VNC = 2V, RL = 1k, CL = 35pF, Figure 3 VNO, VNC = 2V, RL = 1k, CL = 35pF, Figure 3 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 30 45 50 ns 60 35 ns 45 VCOM, VNO, VNC RON VIH VIL V+ = 2.5V, ICOM = 1mA, VNO or VNC = 1V TA = +25C TA = TMIN to TMAX 2.0 0.6 0 65 V+ 110 120 V V V SYMBOL CONDITIONS MIN TYP MAX UNITS
Turn-Off Time
tOFF
Note 2: Parameters are 100% tested at +25C only and guaranteed by correlation at the full rated temperature. Note 3: 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 4: RON = RON(MAX) - RON(MIN). Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Guaranteed by design. Note 7: Off-Isolation = 20log10 (VCOM / VNO), VCOM = output, VNO = input to off switch.
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
MAX4599
ON-RESISTANCE vs. COM VOLTAGE
A A: V+ = +2V B: V+ = +2.5V C: V+ = +3V D: V+ = +4.5V E: V+ = +5V
MAX4599 toc01
ON-RESISTANCE vs. COM VOLTAGE (V+ = +5V)
TA = +25C TA = +85C
MAX4599 toc02
ON-RESISTANCE vs. COM VOLTAGE (V+ = +3V)
70 60 TA = +85C
MAX4599 toc02
120 100 80 RON () 60 B C
60 50 40 RON ()
80
RON ()
TA = -40C 30 20 10 0
50 40 30 20
TA = +25C TA = -40C
D 40 20 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) E
10 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
V+ = +5V
MAX4599 toc04
CHARGE INJECTION vs. COM VOLTAGE
12 10 8 Q (pC) V+ = +5V
MAX4599 toc05
SUPPLY CURRENT vs. TEMPERATURE
MAX4599 toc06
1
14
10 V+ = 5V 1 I+ (nA) V+ = 3V
ON/OFF-LEAKAGE (nA)
0.1
ICOM(ON)
NO, NC(OFF) 0.01
6 V- =+3V 4 2 0
0.1
0.001 -40 -25 -10 5 20 35 50 65 80 TEMPERATURE (C)
-2 0 1 2 3 4 5 VCOM (V)
0.01 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 TEMPERATURE (C)
TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE
MAX4599 toc08
TURN-ON/TURN-OFF TIME vs. TEMPERATURE
40 35 tON/tOFF (ns) 30 25 20 15 10 tOFF tON
MAX4599 toc09
60 50 40 tOFF 30 20 10
45
tON
tON/tOFF (ns)
5 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VSUPPLY (V) 0
V+ = +5V -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 TEMPERATURE (C)
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70 MAX4599
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.) FREQUENCY RESPONSE
MAX4599 toc10
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
RL = 600
MAX4599 toc11
1
-5 -15 -25 LOSS (dB) -35 -45 -55 -65 -75 -85 -95
ON-RESPONSE
VIN = 5VP-P THD + N (%) 0.1 VIN = 3VP-P
OFF-ISOLATION 0.01 0.01 0.1 1 10 100 200 0.01 0.1 1 FREQUENCY (kHz) 10 100 FREQUENCY (MHz)
Pin Description
PIN 1 2 3 4 5 6 NAME IN V+ GND NC COM NO FUNCTION Digital Control Input
V+ POSITIVE SUPPLY D1
Positive Supply Voltage Ground Analog Switch Normally Closed Analog Switch Common Analog Switch Normally Open
GND Vg NO OR NC COM
Applications Information
Analog Signal Levels
Analog signals can range over the supply voltage (V+ to GND) with on-resistance changing very little over the entire range (see Typical Operating Characteristics). The MAX4599 is bidirectional, so the NO, NC, and COM pins can be used either as inputs or outputs.
D2
Figure 1. Overvoltage Protection Using Two External Blocking Diodes
Power-Supply Sequencing and Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are not current limited to < 20mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D2. Adding protection diodes
6
reduces the analog signal range to a diode drop (about 0.7V) below V+ for D1 or to a diode drop above ground for D2. The addition of diodes does not affect leakage. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+) must not exceed 6V. Protection diodes D1 and D2 also protect against some overvoltage situations. A fault voltage up to the absolute maximum rating at an analog signal input does not damage the device, even if the supply voltage is below the signal voltage.
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Low-Voltage, Single-Supply, SPDT Analog Switch in SC70
Test Circuits/Timing Diagrams
MAX4599
V+ V+ COM RL 1k IN LOGIC INPUT GND SWITCH OUTPUT 0 t ON SWITCH OUTPUT VOUT CL 35pF VOUT 0.9 x V0UT t OFF 0.9 x VOUT LOGIC INPUT +3V 50% 0
MAX4599
t r < 20ns t f < 20ns
SWITCH INPUT
NO OR NC
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON
(
)
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 2. Switching Time
MAX4599
V+ V+ LOGIC INPUT COM NO IN RL 1k GND CL 35pF SWITCH OUTPUT (VOUT) VOUT
+3V 50% 0
+3V
NC
LOGIC INPUT
0.9 x VOUT 0.9 x VOUT tBBM
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 3. Break-Before-Make Interval
V+
MAX4599
V+ RGEN NC OR NO GND IN OFF ON Q = (V OUT )(C L ) COM CL VOUT VOUT IN OFF ON
VOUT
OFF
V GEN
VIN = V+
IN
OFF
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 4. Charge Injection _______________________________________________________________________________________ 7
Low-Voltage, Single-Supply, SPDT Analog Switch in SC70 MAX4599
Test Circuits/Timing Diagrams (continued)
10nF SIGNAL GENERATOR 0dBm V+ 10nF V+
MAX4599
COM V+ COM IN ANALYZER RL NC OR NO GND V+
MAX4599
0 OR 2.4V
IN CAPACITANCE METER f = 1MHz NC OR NO GND
0 OR 2.4V
Figure 5. Off-Isolation/On-Channel Bandwidth
Figure 6. Channel On/Off-Capacitance
Chip Information
TRANSISTOR COUNT: 89
Package Information
SC70, 6L.EPS
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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