2Ω, Quad, SPST, CMOS Analog Switches

Transcription

1 9-73; Rev ; 4/ 2Ω, Quad, SPST, CMOS Analog Switches General Description The // quad analog switches feature.6ω max on-resistance (R ) when operating from a dual ±5V supply. R is matched between channels to.3ω max and is flat (.4Ω max) over the specified signal range. Each switch can handle Rail-to- Rail analog signals. Off-leakage current is.na at +25 C. These switches are ideal in low-distortion applications and are the preferred solution over mechanical relays in automated test equipment. They have low power requirements, require less board space, and are more reliable than mechanical relays. The has four normally closed (NC) switches, and the has four normally open (NO) switches. The has two NC and two NO switches and features guaranteed break-before-make switching. The // operate from either a single +2.7V to +V or dual ±2.7V to ±5.5V supplies, making them ideal for use in digital card applications and single-ended 75Ω systems. These devices feature a separate logic supply input that operates from +2.7V to, allowing independent logic and analog supplies. Applications Reed Relay Replacement Test Equipment Communications Systems Audio Signal Routing Avionics ADC Systems Data-Acquisition Systems PBX/PABX Systems Features On-Resistance.6Ω max On-Resistance Flatness.4Ω max On-Resistance Matching.3Ω max Dual ±2.7V to ±5.5V or Single +2.7V to +V Supply Range TTL/CMOS-Logic Compatible Crosstalk -84dB at MHz Off-Isolation -65dB at MHz -3dB Bandwidth: 66MHz Rail-to-Rail Signal Range Ordering Information PART TEMP. RANGE PIN-PACKAGE EUE -4 C to +85 C 6 TSSOP EPE -4 C to +85 C 6 DIP EUE -4 C to +85 C 6 TSSOP EPE -4 C to +85 C 6 DIP EUE -4 C to +85 C 6 TSSOP EPE -4 C to +85 C 6 DIP Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. // Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW IN COM NC NC4 COM4 IN IN2 COM2 NC2 VL NC3 COM3 IN3 IN COM NO NO4 COM4 IN IN2 COM2 NO2 VL NO3 COM3 IN3 IN COM NO NO4 COM4 IN IN2 COM2 NC2 VL NC3 COM3 IN3 DIP/TSSOP LOGIC SWITCH DIP/TSSOP LOGIC SWITCH SWITCHES SHOWN FOR LOGIC "" INPUT LOGIC DIP/TSSOP SWITCHES, 4 SWITCHES 2, 3 Maxim Integrated Products For free samples and the latest literature, visit or phone For small orders, phone

2 // ABSOLUTE MAXIMUM RATINGS to...-.3v to +2V to...+.3v to -2V to...+2v V L, IN_ to (Note )...-.3V to ( +.3V) V, V NC_, V NO_ (Note )... to Current (any terminal)...±5ma Continuous Current (, NC_, NO_)...±mA Peak Current (, NC_, NO_ pulsed at ms % duty cycle)...±2ma 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 Dual Supplies Continuous Power Dissipation (T A = +7 C) 6-Pin Plastic DIP (derate.5mw/ C above +7 C)..842mW 6-Pin TSSOP (derate 5.7mW/ C above +7 C)...457mW Operating Temperature Range...-4 C to +85 C Storage Temperature Range C to +5 C Junction Temperature...+5 C Lead Temperature (soldering, s)...+3 C Note : Signals on NC_, NO_,, or IN_ exceeding or are clamped by internal diodes. Limit forward diode current to maximum current rating. ( = +5V ±%, = -5V ±%, V L = +2.7V to, =, V IH = +2.4V, V IL = +.8V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CDITIS MIN TYP MAX UNITS ANALOG SWITCH Input Voltage Range V COM _, V NO _, V NC _ V On-Resistance R I COM _ = 5mA, = 4.5V, = -4.5V, T A = +25 C.2.6 V NO _ or V NC _ = ±3.3V T A = T MIN to T MAX 2 On-Resistance Match Between Channels (Note 3) R = 4.5V, = -4.5V, T A = +25 C.2.3 I COM _ = 5mA, V NO _ or V NC _ = ±3.3V T A = T MIN to T MAX.5 Ω Ω On-Resistance Flatness (Note 4) R FLAT = 4.5V, = -4.5V, T A = +25 C.2.4 I COM _ = 5mA, V NO _ or V NC _ = ±3.3V, T A = T MIN to T MAX.5 Ω NC_ or NO_ Off-Leakage Current (Note 5) I N_() = +5.5V, = -5.5V, T A = +25 C -. V NO _ or V NC _ = ±4.5V, V COM _ = +4.5V T A = T MIN to T MAX - na Off-Leakage Current (Note 5) I() = +5.5V, = -5.5V, T A = +25 C -. V NO _ or V NC _ = ±4.5V, V COM _ = +4.5V T A = T MIN to T MAX - na On-Leakage Current (Note 5) LOGIC INPUT I () = +5.5V, = -5.5V, V = ±4.5V, V NO _ or V NC _ = ±4.5V or floating T A = +25 C T A = T MIN to T MAX Input Logic High V IH V L = 2.4 V Input Logic Low V IL V L =.8 V Input Leakage Current I IN V L = -.5 µa na 2

3 ELECTRICAL CHARACTERISTICS Dual Supplies (continued) ( = +5V ±%, = -5V ±%, V L = +2.7V to, =, V IH = +2.4V, V IL = +.8V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CDITIS MIN TYP MAX UNITS POWER SUPPLY Positive Supply Voltage V Negative Supply Voltage V Logic Supply Voltage V L 2.7 V Positive Supply Current I+ IN_ = or V L. µa Negative Supply Current I- IN_ = or V L - µa Logic Supply Current I L IN_ = or V L µa Ground Current I IN_ = or, = 5.5V, = -5.5V µa DYNAMIC Turn-On Time t V NC_ or V NO _= ±3.3V, = +4.5V, = -4.5V, T A = +25 C 2 35 V L =, Figure 2 T A = T MIN to T MAX 5 Turn-Off Time t V NC_ or V NO _ = ±3.3V, = +4.5V, = -4.5V, T A = +25 C 5 V L =, Figure 2 T A = T MIN to T MAX 35 Break-Before-Make Delay t BBM Figure 3, only, R L = 3Ω, C L = 35pF ns ns 5 ns Charge Injection Q R GEN =, C L = nf, V GEN =, Figure 4 85 pc Off-Isolation V ISO R L = 5Ω, C L = 5pF, f = MHz, Figure 5a -65 db Crosstalk R L = 5Ω, C L = 5pF, f = MHz, Figure 6a -84 db -3dB Bandwidth BW R S = 5Ω, R L = 5Ω, Figure 7a 66 MHz NC or NO Off- Capacitance C (N_) f = MHz, Figure 8 85 pf COM Off-Capacitance C (COM) f = MHz, Figure 8 85 pf On-Capacitance C () f = MHz, Figure 8 35 pf // 3

4 // ELECTRICAL CHARACTERISTICS Single Supply ( = +5V ±%, =, V L = +2.7V to, =, V IH = +2.4V, V IL = +.8V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CDITIS MIN TYP MAX UNITS ANALOG SWITCH Input Voltage Range V COM _, V NO _, V NC _ V = +4.5V, I T A = +25 C On-Resistance R COM _ = 5mA, V NO _ or V NC _ = 3.3V T A = T MIN to T MAX 3.5 On-Resistance Match Between Channels (Note 3) On-Resistance Flatness (Note 4) NC_ or NO_ Off- Leakage Current (Note 5) Off-Leakage Current (Note 5) On-Leakage Current (Note 5) LOGIC INPUT R R FLAT IN_() I () = +4.5V, I COM _ = 5mA, V NO _ or V NC _ = 3.3V T A = +25 C.5.5 T A = T MIN to T MAX.3 = +4.5V, I COM _ = 5mA, T A = +25 C.5.25 V NO _ or V NC _ = 3.3V,.5V T A = T MIN to T MAX.4 = +5.5V; T A = +25 C -. V NO _ or V NC _ = 4.5V, V; V COM _ = V, 4.5V T A = T MIN to T MAX - = +5.5V; T A = +25 C -. V NO _ or V NC _ = 4.5V, V; V COM _ = V, 4.5V T A = T MIN to T MAX - I () 4.5V; V NO _ or V NC _ = V, = +5.5V; V COM _ = V, T A = +25 C V, or floating T A = T MIN to T MAX Input Low Voltage V IL V L =.8 V Input High Voltage V IH V L = 2.4 V Input Leakage Current I IN V L = -.5 µa POWER SUPPLY Positive Supply Voltage V Logic Supply Voltage V L 2.7 V Ω Ω Ω na na na Positive Supply Current l+ V IN_ = or V L, V L = µa Logic Supply Current I L V IN_ = or V L, = 5.5V µa Ground Current I V IN_ = or V L, = 5.5V µa DYNAMIC Turn-On Time t or V NO_ = 3.3V, R L = 3Ω, V L =, = +4.5V; V NC _ T A = +25 C 6 C L = 35pF, Figure 2 T A = T MIN to T MAX 4 Turn-Off Time t or V NO_ = 3.3V, R L = 3Ω, V L =, = +4.5V; V NC _ T A = +25 C 2 65 C L = 35pF, Figure 2 T A = T MIN to T MAX 4 ns ns 4

5 ELECTRICAL CHARACTERISTICS Single Supply (continued) ( = +5V ±%, =, V L = +2.7V to, =, V IH = +2.4V, V IL = +.8V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CDITIS MIN TYP MAX UNITS Break-Before- Make Delay t BBM only, R L = 3Ω, C L = 35pF, Figure 3 5 ns Charge Injection Q R GEN =, C L = nf, V GEN =, Figure 4 9 pc Off-Isolation V ISO R L = 5Ω, C L = 5pF, f = MHz, Figure 5b -65 db Crosstalk R L = 5Ω, C L = 5pF, f = MHz, Figure 6b -84 db -3dB Bandwidth BW R S = 5Ω, R L = 5Ω, Figure 7b 63 MHz NC or NO Off- Capacitance C (N_) f = MHz, Figure 8 85 pf COM Off-Capacitance C (COM) f = MHz, Figure 8 85 pf On-Capacitance C () f = MHz, Figure 8 35 pf 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: R = R (MAX) - R (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 parameters are % tested at maximum-rated hot operating temperature and the highest supply voltage, and guaranteed by correlation at +25 C. (T A = +25 C, unless otherwise noted.) Typical Operating Characteristics // R (Ω) RESISTANCE vs. V COM (DUAL SUPPLY) V± = ±3V V± = ±2.5V /8/9- R (Ω) = -RESISTANCE vs. V COM (SINGLE SUPPLY) = 4V = 2.5V = 3V = 5V /8/9-2 R (Ω) RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES) T A = +85 C T A = +25 C T A = -4 C /8/ V± = ±4V V± = ±5V V COM (V).5..5 = 2V V COM (V) = 9V.4 = +5V.2 = -5V V L = V COM (V) 5

6 // (T A = +25 C, unless otherwise noted.) CHARGE (pc) V L = R (Ω) RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY) = +5V = V L = T A = +85 C T A = +25 C T A = -4 C V COM (V) CHARGE INJECTI vs. V COM = +5V = = +5V = -5V V COM (V) /8/9-6 TIME (ns) Typical Operating Characteristics (continued) AMX4677/8/9-4 LEAKAGE CURRENT (na) t, t vs. SUPPLY VOLTAGE (DUAL SUPPLIES) t t -/-LEAKAGE CURRENT vs. TEMPERATURE -LEAKAGE -LEAKAGE TEMPERATURE ( C) V L = ±.5 ±2. ±2.5 ±3. ±3.5 ±4. ±4.5, (V) /8/9-7 ±5. TIME (ns) = +5V = -5V V L = /8/9-5 t, t vs. TEMPERATURE t t TEMPERATURE ( C) /8/9-8 TIME (ns) = +5V = -5V t, t vs. LOGIC SUPPLY t t /8/9-9 THRESHOLD VOLTAGE (V) INPUT THRESHOLD vs. LOGIC SUPPLY = +5V = -5V V TH (RISING) V TH (FALLING) /8/9- I+, I-, IL (na).... POWER-SUPPLY CURRENT vs. TEMPERATURE I+, I- I L 8/ V L (V) V L (V) TEMPERATURE (C) 6

7 (T A = +25 C, unless otherwise noted.) (db) INSERTI LOSS, -ISOLATI, AND CROSSTALK vs. FREQUENCY (DUAL SUPPLIES) = +5V = -5V V L =. -3dB, 66MHz dB, MHz dB,MHz 2 3 INSERTI LOSS -ISOLATI. PIN (MHz) CROSSTALK Typical Operating Characteristics (continued) /8/9-2 (db) INSERTI LOSS, -ISOLATI, AND CROSSTALK vs. FREQUENCY (SINGLE SUPPLY) = +5V INSERTI LOSS = -5V V L = -ISOLATI. -3dB, 63MHz dB, MHz dB,MHz 2 3. (MHz) CROSSTALK NAME FUNCTI, 8, 9, 6, 8, 9, 6, 8, 9, 6 2, 7,, 5 2, 7,, 5 2, 7,, 5 3, 6,, 4 3, 6,, 4 IN, IN2, IN3, IN4 COM, COM2, COM3, COM4 NC, NC2, NC3, NC4 NO, NO2, NO3, NO4 Logic Inputs Analog Switch Common Terminals Analog Switch Normally Closed Terminals Analog Switch Normally Open Terminals 3, 6 NO, NO4 Analog Switch Normally Open Terminals, 4 NC2, NC3 Analog Switch Normally Closed Terminals Negative Supply-Voltage Input. Connect to for single-supply operation Ground V L Logic Supply Input Positive Supply Input /8/9-3 Pin Description // 7

8 // Applications Information Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence on first, then, then V L followed by the logic inputs, NO_, NC_, or COM. If proper power-supply sequencing is not possible, add two small signal diodes (D, D2) in series with the supply pins, and a Schottky diode between and V L for overvoltage protection (Figure ). Adding diodes reduces the analog signal range to one diode drop below and one diode drop above, but does not affect the devices low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between and should not exceed V. SWITCH INPUT V COM IN_ V L NO_ OR NC_ R L 3Ω SWITCH OUTPUT C L 35pF VOUT Power-supply bypassing improves noise margin and prevents switching noise from propagating from the supply to other components. A.µF capacitor connected from to is adequate for most applications. V 2 * * *INTERNAL PROTECTI DIODES Figure. Overvoltage Protection Using External Blocking Diodes LOGIC INPUT +3V 5% D D2 t * * tr < 2ns tf < 2ns V L NO_ LOGIC INPUT V SWITCH OUTPUT V OUT t.9 x V UT.9 x V OUT Figure 2. Switching Time C L INCLUDES FIXTURE AND STRAY CAPACITANCE. V OUT = V COM ( R L R L + R ) V COM = +3V V L COM NO V OUT LOGIC INPUT +3V 5% V COM2 = +3V COM2 I N NC2 R L2 V OUT2 C L2 R L C L SWITCH OUTPUT (V OUT ).9 x V UT LOGIC INPUT I N2 C L INCLUDES FIXTURE AND STRAY CAPACITANCE. R L = 3Ω C L = 35pF SWITCH OUTPUT 2 (V OUT2 ) t D t D.9 x V OUT2 Figure 3. Break-Before-Make Interval ( Only) 8

9 V GEN R GEN Figure 4. Charge Injection NETWORK ANALYZER PORT 5Ω N_ V L IN NC_OR NO_ V IN = +3V IN COM IN_ C L V OUT V OUT IN IN NETWORK ANALYZER PORT Q = ( V OUT )(C L ) V OUT IN DEPENDS SWITCH CFIGURATI; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. 5Ω N_ COM IN_ // PORT 2 N PORT 2 N V L -5V V L +5V +5V Figure 5a. Off-Isolation Test Circuit, Dual Supplies Figure 5b. Off-Isolation Test Circuit, Single Supply 9

10 // NETWORK ANALYZER PORT PORT 2 COM Figure 6a. Crosstalk Test Circuit, Dual Supplies V L NETWORK ANALYZER PORT N_ IN N IN2 5Ω COM NETWORK ANALYZER PORT PORT 2 Figure 6b. Crosstalk Test Circuit, Single Supply N_ COM N_ IN N IN2 V L 5Ω PORT 2 V L -5V +5V Figure 7a. Insertion Loss Test Circuit, Dual Supplies

11 NETWORK ANALYZER PORT PORT 2 Figure 7b. Insertion Loss Test Circuit, Single Supply COM V L N_ IN_ +5V TRANSISTOR COUNT: 24 PROCESS: CMOS Chip Information //

12 // Package Information PDIPN.EPS TSSOP.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. 2 Maxim Integrated Products, 2 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.