DATASHEET Low-Voltage, Single Supply, Dual SPST Analog Switches ISL43120, ISL43121, ISL43122 Features The Intersil ISL43120, ISL43121 and ISL43122 devices are precision, bidirectional, dual analog SPST switches designed to operate from a single +2.7V to +12V supply. Targeted applications include battery powered equipment that benefit from the devices’ low power consumption (5µW), low leakage currents (100pA max) and fast switching speeds (tON = 28ns, tOFF = 20ns). Cell phones, for example, often face ASIC functionality limitations. The number of analog input or GPIO pins may be limited and digital geometries are not well suited to analog switch performance. This family of parts may be used to “mux-in” additional functionality while reducing ASIC design risk. Some of the smallest packages are available, alleviating board space limitations and making Intersil’s newest line of low-voltage switches an ideal solution. • Fully specified at 12V, 5V, and 3.3V supplies for 10% tolerances The ISL43120, ISL43121, ISL43122 are dual single-pole/single-throw (SPST) devices. The ISL43120 has two normally open (NO) switches; the ISL43121 has two normally closed (NC) switches; the ISL43122 has one NO and one NC switch and can be used as an SPDT. • Low charge injection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5pC (Max) • Single supply operation . . . . . . . . . . . . . . . . . . . . . . +2.7V to +12V • Low power consumption (PD) . . . . . . . . . . . . . . . . . . . . . . . . .<5µW • Low leakage current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA • Fast switching action - tON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28ns - tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns • Guaranteed break-before-make (ISL43122 only) • Minimum 2000V ESD protection per method 3015.7 • TTL, CMOS compatible • Available in SOT-23 packaging • Pb-free (RoHS Compliant) TABLE 1. FEATURES AT A GLANCE ISL43120 ISL43121 ISL43122 SW 1/SW 2 NO/NO NC/NC NO/NC 3.3V rON 32Ω 32Ω 32Ω 3.3V tON/tOFF 40ns/20ns 40ns/20ns 40ns/20ns 5V rON 19Ω 19Ω 19Ω 5V tON/tOFF 28ns/20ns 28ns/20ns 28ns/20ns 12V rON 11Ω 11Ω 11Ω 12V tON/tOFF 25ns/17ns 25ns/17ns 25ns/17ns Packages • ON-resistance (rON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Ω • rON matching between channels . . . . . . . . . . . . . . . . . . . . . . . <1Ω 8 Ld SOT-23 Related Literature • TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” Applications • Battery-powered, handheld and portable equipment - Cellular/mobile phones - Pagers - Laptops, notebooks, palmtops • Communications systems - Radios, ADSL Modems - PBX, PABX • Test and measurement equipment - Ultrasound - Computerized Tomography (CT) Scanner - Magnetic Resonance Image (MRI) - Position Emission Tomography (PET) Scanner - Electrocardiograph • AN557“Recommended Test Procedures for Analog Switches” • Heads-up displays • TB401“Using the ISL43120 SPST Switch in a Multi-Phase PWM Power Application” • Various circuits - +3V/+5V DACs and ADCs - Sample and hold circuits - Digital filters - Operational amplifier gain switching networks - High frequency analog switching - High speed multiplexing - Integrator reset circuits August 17, 2015 FN6033.6 1 • Audio and video switching CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2003-2005, 2007, 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL43120, ISL43121, ISL43122 Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING PACKAGE (RoHS Compliant) TEMP. RANGE (°C) PKG. DWG. # 120Z (Note 4) -40 to +85 8 Ld SOT-23 P8.064 ISL43121IHZ-T (No longer available, 121Z (Note 4) recommended replacement: ISL43120IHZ-T) -40 to +85 8 Ld SOT-23 P8.064 ISL43122IHZ-T (No longer available, 122Z (Note 4) recommended replacement: ISL43120IHZ-T) -40 to +85 8 Ld SOT-23 P8.064 ISL43120IHZ-T NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see product information page for ISL43120, ISL43121, ISL43122. For more information on MSL, please see tech brief TB363. 4. The part marking is located on the bottom of the part. Pin Configurations (Note 5) 8 COM1 NO1 1 ISL43122 (8 LD SOT-23) TOP VIEW ISL43121 (8 LD SOT-23) TOP VIEW ISL43120 (8 LD SOT-23) TOP VIEW 8 COM1 NC1 1 8 COM1 NO1 1 V+ 2 7 IN1 V+ 2 7 IN1 V+ 2 7 IN1 IN2 3 6 GND IN2 3 6 GND IN2 3 6 GND COM2 4 5 NO2 COM2 4 5 NC2 COM2 4 5 NC2 NOTE: 5. Switches Shown for Logic “0” Input. Truth Table ISL43120 ISL43121 ISL43122 IN1 IN2 NO1 NO2 NC1 NC2 NO1 NC2 0 0 OFF OFF ON ON OFF ON 0 1 OFF ON ON OFF OFF OFF 1 0 ON OFF OFF ON ON ON 1 1 ON ON OFF OFF ON OFF NOTE: Logic “0” 0.8V. Logic “1” 2.4V. Pin Descriptions ISL43120 PIN NUMBER ISL43121 PIN NUMBER ISL43122 PIN NUMBER 2 2 2 V+ 6 6 6 GND Ground Connection 3, 7 3, 7 3, 7 INx Digital Control Input 4, 8 4, 8 4, 8 COMx 1 NOx Analog Switch Normally Open Pin 5 NCx Analog Switch Normally Closed Pin 1, 5 1, 6 Submit Document Feedback 2 PIN NAME FUNCTION System Power Supply Input (+2.7V to +12V) Analog Switch Common Pin FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Absolute Maximum Ratings Thermal Information V+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 15V Input Voltages IN (Note 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V) NO, NC (Note 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V) Output Voltages COM (Note 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V) Continuous Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Peak Current NO, NC, or COM (Pulsed 1ms, 10% Duty Cycle, Max). . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA ESD Rating Human Body Model (Per MIL-STD-883 Method 3015) . . . . . . . . . . >2kV Thermal Resistance (Typical, Note 7) JA (°C/W) 8 Ld SOT-23 Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C Maximum Storage Temperature Range. . . . . . . . . . . . . . . . . -65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493 Recommended Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 6. Signals on NC, NO, COM, or IN exceeding V+ or GND are clamped by internal diodes. Limit forward diode current to maximum current ratings. 7. JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Electrical Specifications - 5V Supply V+ = +4.5V to +5.5V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. PARAMETER TEST CONDITIONS TEMP MIN (°C) (Notes 9, 10) TYP MAX (Notes 9, 10) UNIT ANALOG SWITCH CHARACTERISTICS Analog Signal Range, VANALOG V+ = 4.5V, ICOM = 1.0mA, VNO or VNC = 3.5V (see Figure 5) ON-resistance, rON Full 0 - V+ V 25 - 19 30 Ω Full - 23 40 Ω 25 - 0.8 2 Ω Full - 1 4 Ω rON Matching Between Channels, rON V+ = 5V, ICOM = 1.0mA, VNO or VNC = 3.5V rON Flatness, rFLAT(ON) V+ = 5V, ICOM = 1.0mA, VNO or VNC = 1V, 2V, 3V Full - 7 8 Ω NO or NC OFF Leakage Current, INO(OFF) or INC(OFF) V+ = 5.5V, VCOM = 1V, 4.5V, VNO or VNC = 4.5V, 1V 25 -0.1 0.01 0.1 nA COM OFF Leakage Current, ICOM(OFF) V+ = 5.5V, VCOM = 4.5V, 1V, VNO or VNC = 1V, 4.5V COM ON Leakage Current, ICOM(ON) V = 5.5V, VCOM = 1V, 4.5V, or VNO or VNC = 1V, 4.5V, or Floating Full -5 - 5 nA 25 -0.1 - 0.1 nA Full -5 - 5 nA 25 -0.2 - 0.2 nA Full -10 - 10 nA DYNAMIC CHARACTERISTICS VNO or VNC = 3V, RL =1kΩ, CL = 35pF, VIN = 0V to 3V (see Figure 1, Note 11) Turn-ON Time, tON VNO or VNC = 3V, RL =1kΩ, CL = 35pF, VIN = 0V to 3V (see Figure 1, Note 11) Turn-OFF Time, tOFF 25 - 28 75 ns Full - 40 150 ns 25 - 20 50 ns Full - 30 100 ns 10 - ns Break-Before-Make Time Delay (ISL43122 only), tD RL = 300Ω, CL = 35pF, VNO = VNC = 3V, VIN = 0V to 3V (see Figure 3, Note 11) Full 3 Charge Injection, Q CL = 1.0nF, VG = 0V, RG = 0 (see Figure 2, Note 11) 25 - 3 5 pC OFF Isolation RL = 50Ω, CL = 5pF, f = 1MHz (see Figure 4) 25 - 76 - dB Crosstalk (Channel-to-Channel) RL = 50Ω, CL = 5pF, f = 1MHz (see Figure 6) 25 - -105 - dB Power Supply Rejection Ratio RL = 50Ω, CL = 5pF, f = 1MHz 25 - 60 - dB NO or NC OFF Capacitance, COFF f = 1MHz, VNO or VNC = VCOM = 0V (see Figure 7) 25 - 8 - pF COM OFF Capacitance, CCOM(OFF) f = 1MHz, VNO or VNC = VCOM = 0V (see Figure 7) 25 - 8 - pF COM ON Capacitance, CCOM(ON) f = 1MHz, VNO or VNC = VCOM = 0V (see Figure 7) 25 - 21 - pF Submit Document Feedback 3 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Electrical Specifications - 5V Supply V+ = +4.5V to +5.5V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER TEST CONDITIONS TEMP MIN (°C) (Notes 9, 10) TYP MAX (Notes 9, 10) UNIT POWER SUPPLY CHARACTERISTICS Power Supply Range V+ = 5.5V, VIN = 0V or V+, all channels on or off Positive Supply Current, I+ Full 2.7 - 12 V Full -1 0.0001 1 µA Full - - 0.8 V Full 2.4 - - V Full -1 - 1 µA DIGITAL INPUT CHARACTERISTICS Input Voltage Low, VINL Input Voltage High, VINH Input Current, IINH, IINL V+ = 5.5V, VIN = 0V or V+ Electrical Specifications - 3.3V Supply V+ = +3.0V to +3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. PARAMETER TEST CONDITIONS TEMP MIN (°C) (Notes 9, 10) TYP MAX (Notes 9, 10) UNIT ANALOG SWITCH CHARACTERISTICS Analog Signal Range, VANALOG ON-resistance, rON V+ = 3V, ICOM = 1.0mA, VNO or VNC = 1.5V rON Matching Between Channels, rON V+ = 3.3V, ICOM = 1.0mA, VNO or VNC = 1.5V rON Flatness, rFLAT(ON) V+ = 3.3V, ICOM = 1.0mA, VNO or VNC = 0.5V, 1V, 1.5V NO or NC OFF Leakage Current, INO(OFF) or INC(OFF) V+ = 3.6V, VCOM = 1V, 3V, VNO or VNC = 3V, 1V COM OFF Leakage Current, ICOM(OFF) V+ = 3.6V, VCOM = 3V, 1V, VNO or VNC = 1V, 3V COM ON Leakage Current, ICOM(ON) V = 3.6V, VCOM = 1V, 3V, or VNO or VNC = 1V, 3V, or floating Full 0 - V+ V 25 - 32 50 Ω Full - 40 60 Ω 25 - 0.8 2 Ω Full - 1 4 Ω 25 - 6 8 Ω Full - 7 12 Ω 25 -0.1 0.01 0.1 nA Full -5 - 5 nA 25 -0.1 0.01 0.1 nA Full -5 - 5 nA 25 -0.2 - 0.2 nA Full -10 - 10 nA DYNAMIC CHARACTERISTICS Turn-ON Time, tON Turn-OFF Time, tOFF VNO or VNC = 1.5V, RL = 1kΩ, CL = 35pF, VIN = 0V to 3V (Note 11) 25 - 40 120 ns Full - 60 200 ns VNO or VNC = 1.5V, RL = 1kΩ, CL = 35pF, VIN = 0V to 3V (Note 11) 25 - 20 50 ns Full - 30 120 ns Full 3 20 - ns RL = 300Ω, CL = 35pF, VNO or VNC = 1.5V, VIN = 0V to 3V (Note 11) Break-before-make Time Delay (ISL43122 only), tD Charge Injection, Q CL = 1.0nF, VG = 0V, RG = 0ΩNote 11) 25 - 1 5 pC OFF-isolation RL = 50Ω, CL = 5pF, f = 1MHz 25 - 76 - dB Crosstalk (Channel-to-channel) RL = 50Ω, CL = 5pF, f = 1MHz 25 - -105 - dB Power Supply Rejection Ratio RL = 50Ω, CL = 5pF, f = 1MHz 25 - 56 - dB NO or NC OFF Capacitance, COFF f = 1MHz, VNO or VNC = VCOM = 0V 25 - 8 - pF COM OFF Capacitance, CCOM(OFF) f = 1MHz, VNO or VNC = VCOM = 0V 25 - 8 - pF COM ON Capacitance, CCOM(ON) f = 1MHz, VNO or VNC = VCOM = 0V (See Figure 7) 25 - 21 - pF V+ = 3.6V, VIN = 0V or V+, all channels on or off Full -1 - 1 µA POWER SUPPLY CHARACTERISTICS Positive Supply Current, I+ Submit Document Feedback 4 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Electrical Specifications - 3.3V Supply V+ = +3.0V to +3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER TEST CONDITIONS TEMP MIN (°C) (Notes 9, 10) TYP MAX (Notes 9, 10) UNIT DIGITAL INPUT CHARACTERISTICS Input Voltage Low, VINL Full - - 0.8 V Input Voltage High, VINH Full 2.4 - - V Full -1 - 1 µA Input Current, IINH, IINL V+ = 3.6V, VIN = 0V or V+ Electrical Specifications - 12V Supply V+ = +10.8V to +13V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. PARAMETER TEST CONDITIONS MAX (Notes 9, 10) UNIT TEMP (°C) MIN (Notes 9, 10) TYP Full 0 - V+ V ANALOG SWITCH CHARACTERISTICS Analog Signal Range, VANALOG ON-resistance, rON V+ = 10.8V, ICOM = 1.0mA, VNO or VNC = 10V rON Matching Between Channels, rON V+ = 12V, ICOM = 1.0mA, VNO or VNC = 10V rON Flatness, rFLAT(ON) V+ = 12V, ICOM = 1.0mA, VNO or VNC = 3V, 6V, 9V NO or NC OFF Leakage Current, INO(OFF) or INC(OFF) V+ = 13V, VCOM = 1V, 12V, VNO or VNC = 12V, 1V COM OFF Leakage Current, ICOM(OFF) V+ = 13V, VCOM = 12V, 1V, VNO or VNC = 1V, 12V COM ON Leakage Current, ICOM(ON) V = 13V, VCOM = 1V, 12V, or VNO or VNC = 1V, 12V, or floating 25 - 11 20 Ω Full - 15 25 Ω 25 - 0.8 2 Ω Full - 1 4 Ω 25 - 1 4 Ω Full - - 6 Ω 25 -0.1 0.01 0.1 nA Full -5 - 5 nA 25 -0.1 0.01 0.1 nA Full -5 - 5 nA 25 -0.2 - 0.2 nA Full -10 - 10 nA 25 - 25 35 ns Full - 35 55 ns 25 - 17 30 ns 50 DYNAMIC CHARACTERISTICS Turn-ON Time, tON VNO or VNC = 10V, RL = 1kΩ, CL = 35pF, VIN = 0V to 4V (Note 11) Turn-OFF Time, tOFF VNO or VNC = 10V, RL = 1kΩ, CL = 35pF, VIN = 0V to 4V (Note 11) Full - 26 Break-before-make Time Delay (ISL43122 only), tD RL = 300Ω, CL = 35pF, VNO or VNC = 10V, VIN = 0 to 4V Full 0 2 Charge Injection, Q CL = 1.0nF, VG = 0V, RG = 0(Note 11) 25 - 5 ns ns 15 pC OFF-isolation RL = 50Ω, CL = 5pF, f = 1MHz 25 - 76 - dB Crosstalk (Channel-to-channel) RL = 50Ω, CL = 5pF, f = 1MHz 25 - -105 - dB Power Supply Rejection Ratio RL = 50Ω, CL = 5pF, f = 1MHz 25 - 63 - dB NO or NC OFF Capacitance, COFF f = 1MHz, VNO or VNC = VCOM = 0V 25 - 8 - pF COM OFF Capacitance, CCOM(OFF) f = 1MHz, VNO or VNC = VCOM = 0V 25 - 8 - pF COM ON Capacitance, CCOM(ON) f = 1MHz, VNO or VNC = VCOM = 0V (see Figure 7) 25 - 21 - pF V+ = 13V, VIN = 0V or V+, all channels on or off Full -1 - 1 µA POWER SUPPLY CHARACTERISTICS Positive Supply Current, I+ Submit Document Feedback 5 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Electrical Specifications - 12V Supply V+ = +10.8V to +13V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 8), unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER TEMP (°C) TEST CONDITIONS MIN (Notes 9, 10) TYP MAX (Notes 9, 10) UNIT DIGITAL INPUT CHARACTERISTICS Input Voltage Low, VINL Full - - 0.8 V Input Voltage High, VINH Full 4 - - V Full -1 - 1 µA Input Current, IINH, IINL V+ = 13V, VIN = 0V or V+ NOTES: 8. VIN = input voltage to perform proper function. 9. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. 10. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 11. Limits established by characterization and are not production tested. Test Circuits and Waveforms V+ tr < 20ns tf < 20ns 3V OR 4V LOGIC INPUT 50% 0V tOFF SWITCH INPUT VNO SWITCH INPUT VOUT VOUT NO OR NC COM IN 90% SWITCH OUTPUT C 90% 0V LOGIC INPUT CL 35pF RL 1k GND tON Logic input waveform is inverted for switches that have the opposite logic sense. Repeat test for all switches. CL includes fixture and stray capacitance. RL V OUT = V (NO or NC) -----------------------R L + r ON FIGURE 1B. TEST CIRCUIT FIGURE 1A. MEASUREMENT POINTS FIGURE 1. SWITCHING TIMES V+ SWITCH OUTPUT VOUT RG VOUT V+ LOGIC INPUT ON ON OFF VG NO OR NC GND C VOUT COM IN CL 0V LOGIC INPUT Q = VOUT x CL FIGURE 2B. TEST CIRCUIT FIGURE 2A. MEASUREMENT POINTS FIGURE 2. CHARGE INJECTION Submit Document Feedback 6 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Test Circuits and Waveforms (Continued) V+ 3V OR 4V LOGIC INPUT 0V C VOUT1 NO1 VNX COM1 NC2 90% SWITCH OUTPUT VOUT1 IN1 0V RL2 300Ω IN2 90% SWITCH OUTPUT VOUT2 0V LOGIC INPUT VOUT2 RL1 300Ω COM2 CL1 35pF CL2 35pF GND tD tD CL includes fixture and stray capacitance. FIGURE 3B. TEST CIRCUIT (ISL43122 ONLY) FIGURE 3A. MEASUREMENT POINTS (ISL43122 ONLY) FIGURE 3. BREAK-BEFORE-MAKE TIME V+ V+ C C rON = V1/1mA SIGNAL GENERATOR NO OR NC NO OR NC VNX INX 0V OR VINH 1mA 0.8V OR VINH COM COM ANALYZER IN V1 GND GND RL FIGURE 5. rON TEST CIRCUIT FIGURE 4. OFF-ISOLATION TEST CIRCUIT V+ C V+ C SIGNAL GENERATOR NO1 OR NC1 COM1 50 NO OR NC IN1 COM2 ANALYZER INX IN2 0V OR VINH 0V OR 2.4V NO2 OR NC2 GND 0V OR VINH IMPEDANCE ANALYZER COM NC GND RL FIGURE 6. CROSSTALK TEST CIRCUIT Submit Document Feedback 7 FIGURE 7. CAPACITANCE TEST CIRCUIT FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Detailed Description Power-Supply Considerations The ISL43120, ISL43121, ISL43122 bidirectional dual SPST analog switches offer precise switching capability from a single 2.7V to 12V supply with low ON-resistance (19Ω) and high speed operation (tON = 28ns, tOFF = 20ns). The devices are especially well suited to portable battery-powered equipment thanks to the low operating supply voltage (2.7V), low power consumption (5µW), low leakage currents (100pA max), and the tiny SOT-23 packaging. High frequency applications also benefit from the wide bandwidth, and the very high off-isolation and crosstalk rejection. Supply Sequencing and Overvoltage Protection With any CMOS device, proper power supply sequencing is required to protect the device from excessive input currents, which might permanently damage the IC. All I/O pins contain ESD protection diodes from the pin to V+ and GND (see Figure 8). To prevent forward biasing these diodes, V+ must be applied before any input signals, and input signal voltages must remain between V+ and GND. If these conditions cannot be guaranteed, then one of the following two protection methods should be employed. Logic inputs can easily be protected by adding a 1kΩ resistor in series with the input (see Figure 8). The resistor limits the input current below the threshold that produces permanent damage, and the sub-microamp input current produces an insignificant voltage drop during normal operation. Adding a series resistor to the switch input defeats the purpose of using a low rON switch, so two small signal diodes can be added in series with the supply pins to provide overvoltage protection for all pins (see Figure 8). These additional diodes limit the analog signal from 1V below V+ to 1V above GND. The low leakage current performance is unaffected by this approach, but the switch resistance may increase, especially at low supply voltages. OPTIONAL PROTECTION DIODE V+ OPTIONAL PROTECTION RESISTOR INX VNO OR NC VCOM GND OPTIONAL PROTECTION DIODE The ISL43120, ISL43121, ISL43122 construction is typical of most CMOS analog switches, except that they have only two supply pins: V+ and GND. V+ and GND drive the internal CMOS switches and set their analog voltage limits. Unlike switches with a 13V maximum supply voltage, the ISL43120, ISL43121, ISL43122 15V maximum supply voltage provides plenty of room for the 10% tolerance of 12V supplies, as well as room for overshoot and noise spikes. The minimum recommended supply voltage is 2.7V. It is important to note that the input signal range, switching times, and ON-resistance degrade at lower supply voltages. Refer to the “Electrical Specifications” tables starting on page 3 and “Typical Performance Curves” (starting on page 9) for details. V+ and GND also power the internal logic and level shifter. The level shifter convert the input logic levels to switched V+ and GND signals to drive the analog switch gate terminals. This family of switches cannot be operated with bipolar supplies, because the input switching point becomes negative in this configuration. Logic-level Thresholds This switch family is TTL compatible (0.8V and 2.4V) over a supply range of 3V to 11V (see Figure 15). At 12V the VIH level is about 2.5V. This is still below the TTL guaranteed high output minimum level of 2.8V, but noise margin is reduced. For best results with a 12V supply, use a logic family the provides a VOH greater than 3V. The digital input stages draw supply current whenever the digital input voltage is not at one of the supply rails. Driving the digital input signals from GND to V+ with a fast transition time minimizes power dissipation. High-frequency Performance In 50Ω systems, signal response is reasonably flat even past 300MHz (see Figure 16). Figure 16 also illustrates that the frequency response is very consistent over a wide V+ range, and for varying analog signal levels. An OFF switch acts like a capacitor and passes higher frequencies with less attenuation, resulting in signal feedthrough from a switch’s input to its output. Off-isolation is the resistance to this feedthrough, while crosstalk indicates the amount of feedthrough from one switch to another. Figure 17 details the high off-isolation and crosstalk rejection provided by this family. At 10MHz, off isolation is about 50dB in 50Ω systems, decreasing approximately 20dB per decade as frequency increases. Higher load impedances decrease off isolation and crosstalk rejection due to the voltage divider action of the switch OFF impedance and the load impedance. FIGURE 8. OVERVOLTAGE PROTECTION Submit Document Feedback 8 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Leakage Considerations Reverse ESD protection diodes are internally connected between each analog-signal pin and both V+ and GND. One of these diodes conducts if any analog signal exceeds V+ or GND. Virtually all the analog leakage current comes from the ESD diodes to V+ or GND. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the V+ and GND pins constitutes the analog-signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity. There is no connection between the analog signal paths and V+ or GND. Typical Performance Curves TA = +25°C, unless otherwise specified. 40 45 40 35 35 V+ = 3.3V 30 30 20 25 rON (Ω) rON (Ω) +85°C +25°C 25 +85°C 20 +25°C 15 -40°C 10 -40°C 15 30 25 20 15 10 20 15 V+ = 5V +85°C +25°C -40°C +85°C V+ = 12V +25°C 10 5 -40°C 0 5 3 4 5 6 7 8 V+ (V) 9 10 11 12 13 FIGURE 9. ON-RESISTANCE vs SUPPLY VOLTAGE 0.50 0.40 0.30 2 4 6 VCOM (V) 8 10 12 FIGURE 10. ON-RESISTANCE vs SWITCH VOLTAGE 60 V+ = 3.3V +25°C 50 +85°C 0.10 0 0.25 0.20 0.15 30 V+ = 5V +25°C 0.10 +85°C +85°C 0.05 0 0.15 V+ = 12V +25°C -40°C 0.05 2 4 V+ = 12V V+ = 3.3V 0 +25°C 6 VCOM (V) 8 10 FIGURE 11. rON MATCH vs SWITCH VOLTAGE Submit Document Feedback V+ = 5V -10 +85°C -40°C 0 20 10 -40°C 0.10 0 40 -40°C Q (pC) rON (Ω) 0.20 9 12 -20 0 2 4 6 8 10 12 VCOM (V) FIGURE 12. CHARGE INJECTION vs SWITCH VOLTAGE FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Typical Performance Curves TA = +25°C, unless otherwise specified. (Continued) 35 100 90 30 80 +85°C tOFF (ns) tON (ns) 70 60 +85°C 25 50 -40°C -40°C 40 20 -40°C +25°C 30 20 25°C 2 3 4 15 5 6 7 V+ (V) 8 9 10 11 12 3.0 2.5 2.0 4 5 6 7 V+ (V) 8 9 10 11 12 +85°C V+ = 3.3V TO 12V 0 GAIN -3 -6 0 PHASE 20 +25°C 1.5 +85°C 40 -40°C 60 +25°C 1.0 RL = 50 VIN = 0.2VP-P TO 2.5VP-P (V+ = 3.3V) VIN = 0.2VP-P TO 4VP-P (V+ = 5V) VIN = 0.2VP-P TO 5VP-P (V+ = 12V) VINL +85°C 0.5 2 3 4 5 6 7 8 V+ (V) 9 10 11 12 FIGURE 15. DIGITAL SWITCHING POINT vs SUPPLY VOLTAGE Submit Document Feedback 10 13 1M 10M 100M FREQUENCY (Hz) 80 PHASE (°) VINH AND VINL (V) VINH -40°C 3 FIGURE 14. TURN-OFF TIME vs SUPPLY VOLTAGE NORMALIZED GAIN (dB) FIGURE 13. TURN-ON TIME vs SUPPLY VOLTAGE 2 100 600M FIGURE 16. FREQUENCY RESPONSE FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Typical Performance Curves TA = +25°C, unless otherwise specified. (Continued) -10 10 RL = 50 -20 20 0 -30 30 10 -40 40 20 -50 50 60 ISOLATION -70 70 -80 80 -90 CROSSTALK -100 -110 1k 10k 100k 1M 10M ±PSRR (dB) -60 V+ = 3.3V, SWITCH OFF OFF ISOLATION (dB) CROSSTALK (dB) V+ = 3V TO 13V 40 V+ = 12V, SWITCH ON 50 60 90 70 100 80 110 100M 500M V+ = 12V, SWITCH OFF 30 0.3k V+ = 3.3V, SWITCH ON 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 17. CROSSTALK AND OFF-ISOLATION FIGURE 18. ±PSRR vs FREQUENCY 1G Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: ISL43120: 66 ISL43121: 66 ISL43122: 66 PROCESS: Si Gate CMOS Submit Document Feedback 11 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make sure that you have the latest revision. DATE REVISION CHANGE August 17, 2015 FN6033.7 Updated Ordering Information table on page 2. May 28, 2015 FN6033.6 Added Rev History beginning with Rev 6. Updated entire datasheet applying Intersil’s new standards. Updated Ordering information by removing obsolete parts, adding MSL and part marking notes. About Intersil Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets. For the most updated datasheet, application notes, related documentation and related parts, please see the respective product information page found at www.intersil.com. You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask. Reliability reports are also available from our website at www.intersil.com/support Submit Document Feedback 12 FN6033.6 August 17, 2015 ISL43120, ISL43121, ISL43122 Small Outline Transistor Plastic Packages (SOT23-8) 0.20 (0.008) M CL 6 7 5 CL E 2 8 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE INCHES CL 1 P8.064 VIEW C e b 8 C 3 E1 4 e1 C D CL A A2 SEATING PLANE A1 -C- SYMBOL MIN MAX MIN MAX NOTES A 0.036 0.057 0.90 1.45 - A1 0.000 0.0059 0.00 0.15 - A2 0.036 0.051 0.90 1.30 - b 0.009 0.015 0.22 0.38 b1 0.009 0.013 0.22 0.33 c 0.003 0.009 0.08 0.22 6 c1 0.003 0.008 0.08 0.20 6 D 0.111 0.118 2.80 3.00 3 E 0.103 0.118 2.60 3.00 - E1 0.060 0.067 1.50 1.70 3 e e1 L 0.10 (0.004) C MILLIMETERS 0.0256 Ref 0.65 Ref 0.0768 Ref 0.014 1.95 Ref 0.022 0.35 0.024 Ref. 0.60 Ref. L2 0.010 Ref. 0.25 Ref. 8 - 8 5 WITH b R 0.004 - 0.10 - PLATING b1 R1 0.004 0.010 0.10 0.25 0o 8o 0o 8o c c1 4 0.55 L1 N - Rev. 2 9/03 NOTES: BASE METAL 1. Dimensioning and tolerance per ASME Y14.5M-1994. 2. Package conforms to EIAJ SC-74 and JEDEC MO178BA. 4X 1 3. Dimensions D and E1 are exclusive of mold flash, protrusions, or gate burrs. 4. Footlength L measured at reference to gauge plane. R1 5. “N” is the number of terminal positions. R GAUGE PLANE SEATING PLANE L C L1 6. These Dimensions apply to the flat section of the lead between 0.08mm and 0.15mm from the lead tip. 7. Controlling dimension: MILLIMETER. Converted inch dimensions are for reference only L2 4X 1 VIEW C For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 13 FN6033.6 August 17, 2015