Low-Voltage, High-Speed, Quad, SPST CMOS Analog Switches

Transcription

1 9-5; Rev ; 7/99 Low-Voltage, High-Speed, Quad, SPST General Description The quad, low-voltage, high-speed, single-pole/single-throw (SPST) analog switches are pin compatible with the industry-standard 74HC466/MAX46 analog switches. On-resistance (Ω max) is matched between switches to Ω max and is flat (Ω max) over the specified signal range. Each switch handles to analog signal levels. Maximum off-leakage current is only na at and 6nA at T A = +85 C. The MAX464 has four normally open (NO) switches, and the MAX465 has four normally closed (NC) switches. The MAX466 has two NO switches and two NC switches. These CMOS switches operate from a single +V to +5.5V supply. All digital inputs have +.8V and +.4V logic thresholds, ensuring TTL/CMOSlogic compatibility when using a single +5V supply. Applications Battery-Operated Equipment Audio/Video Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Communication Circuits Features Fast Switching Times ns ton, ns toff Pin Compatible with Industry-Standard 74HC466/MAX46 Guaranteed On-Resistance Ω max (+5V supply) Ω max (+3V supply) Guaranteed Match Between Channels (Ω max) Guaranteed Flatness Over Signal Range (Ω max) <6nA Off-Leakage Current Over Temperature (T A = +85 C) Rail-to-Rail Signal Handling TTL/CMOS-Logic Compatible PART MAX464CUD MAX464CSD MAX464CPD Ordering Information TEMP. RANGE PIN-PACKAGE C to +7 C 4 TSSOP C to +7 C 4 Narrow SO C to +7 C 4 Plastic DIP MAX464EUD -4 C to +85 C 4 TSSOP MAX464ESD -4 C to +85 C 4 Narrow SO MAX464EPD -4 C to +85 C 4 Plastic DIP Ordering Information continued at end of data sheet. Pin Configurations/Truth Tables TOP VIEW MAX464 MAX465 MAX466 NO 4 NC 4 NO 4 COM 3 IN COM 3 IN COM 3 IN NO 3 IN4 NC 3 IN4 NC 3 IN4 COM 4 NO4 COM 4 NC4 COM 4 NC4 IN 5 COM4 IN 5 COM4 IN 5 COM4 IN3 6 9 COM3 IN3 6 9 COM3 IN3 6 9 COM3 7 8 NO3 7 8 NC3 7 8 NO3 TSSOP/SO/DIP TSSOP/SO/DIP TSSOP/SO/DIP INPUT SWITCH STATE INPUT SWITCH STATE INPUT NO, NO3 NC, NC4 LOW HIGH OFF ON LOW HIGH ON OFF LOW HIGH OFF ON ON OFF Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Maxim Integrated Products For free samples & the latest literature: or phone For small orders, phone

2 ABSOLUTE MAXIMUM RATINGS (Voltages referenced to ), IN_...-.3V to +6V COM_, NO_, NC_ (Note )...-.3V to ( +.3V) Continuous Current (any terminal)...±75ma Peak Current (NO_, NC_, COM_) (pulsed at ms, % duty cycle)...±ma 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 ( = +5V ±%, V IN_H =.4V, V IN_L =.8V, T A = T MIN to T MAX, unless otherwise noted.) (Note ) Analog Signal Range (Note 3) V COM_, V NO_, V NC_ Continuous Power Dissipation (T A = +7 C) 4-Pin TSSOP (derate 6.3mW/ C above +7 C)...5mW 4-Pin Narrow SO (derate 8.mW/ C above +7 C)..64mW 4-Pin Plastic DIP (derate.mw/ C above +7 C)...8mW Operating Temperature Ranges MAX46_C... C to +7 C MAX46_E...-4 C to +85 C Storage Temperature Range C to +5 C Lead Temperature (soldering, sec)...+3 C Note : Signals on NO_, NC_, or COM_ exceeding or are clamped by internal diodes. Limit forward-diode current to maximum current rating. PARAMETER ANALOG SWITCH SYMBOL CONDITIONS MIN TYP MAX = 4.5V, 8 On-Resistance R ON I COM_ = ma, Ω V NO_ = V NC_ = 3V T A = T MIN to T MAX 3 UNITS V On-Resistance Match Between Channels (Note 4) R ON = 4.5V, I COM_ = ma, V NO_ = V NC_ = 3V. T A = T MIN to T MAX. Ω On-Resistance Flatness (Note 5) R FLAT(ON) = 4.5V; I COM_ = ma; V NO_ = V NC_ = 3V, V, V T A = T MIN to T MAX.3. Ω NO_ or NC_ Off-Leakage Current (Note 6) I NO(OFF) = 5.5V; V COM_ = V, 4.5V; V NO_ = 4.5V, V T A = T MIN to T MAX na COM_ Off-Leakage Current (Note 6) I COM(OFF) = 5.5V; V COM_ = V, 4.5V; V NO_ = V NC_ = 4.5V, V T A = T MIN to T MAX na COM_ On-Leakage Current (Note 6) I COM(ON) = 5.5V; V COM_ = V, 4.5V; V NO_ = V NC_ = V, 4.5V, or floating T A = T MIN to T MAX -. - na

3 ELECTRICAL CHARACTERISTICS Single +5V Supply (continued) ( = +5V ±%, V IN_H =.4V, V IN_L =.8V, T A = T MIN to T MAX, unless otherwise noted.) (Note ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOGIC INPUT Input Current with Input Voltage High Input Current with Input Voltage Low I IN_H V IN_ =.4V -.3 na I IN_L V IN_ =.8V -.3 na Input Voltage High V IN_H.4 V Input Voltage Low V IN_L.8 V SWITCH DYNAMIC 5 Turn-On Time (Note 3) t ON V COM_ = 3V, Figure T A = T MIN to T MAX 4.5 Turn-Off Time (Note 3) t OFF V COM_ = 3V, Figure ns T A = T MIN to T MAX Signal = dbm, Figure 4, 5Ω in and out, On-Channel Bandwidth BW 7 MHz Signal = dbm, Figure 4, 5Ω in and out, Charge Injection Q 6.5 pc R L = 5Ω, f = khz, Figure 4, Off-Isolation (Note 7) V ISO -85 db Crosstalk (Note 8) V CT R L = 5Ω, f = khz, Figure 5, -96 db NO_ or NC_ Capacitance C (OFF) f = MHz, Figure 6, 5 pf COM_ Off-Capacitance C COM(OFF) f = MHz, Figure 6, 5 pf COM_ On-Capacitance C COM(ON) f = MHz, Figure 6, pf Total Harmonic Distortion THD 6Ω IN and OUT, f = Hz to khz, Vp-p,.34 % POWER SUPPLY Power-Supply Range Power-Supply Current 5.5 V I+ V IN = or, all switches on or off -. µa ns 3

4 ELECTRICAL CHARACTERISTICS Single +3.3V Supply ( = +3.3V ±%, V IN_H =.4V, V IN_L =.5V, T A = T MIN to T MAX, unless otherwise noted.) (Note ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG SWITCH Analog Signal Range (Note 3) V COM_, V NO_, V V NC_ = 3V, 8 On-Resistance R ON I NO = ma, V COM_ =.5V T A = T MIN to T MAX 5 On-Resistance Match Between Channels (Note 4) NO_ or NC_ Off-Leakage Current (Notes 3, 6) COM_ Off-Leakage Current (Notes 3, 6) COM_ On-Leakage Current (Notes 3, 6) LOGIC INPUT Input Current with Input Voltage High = 3V,.5.5 R ON I COM_ = ma, V NO_ = V NC_ =.5V T A = T MIN to T MAX = 3.6V; -. I NO(OFF) V COM_ = V, 3V; V NO_ = V NC_ = 3V, V T A = T MIN to T MAX - = 3.6V; -. I COM(OFF) V COM_ = V, 3V; V NO_ = V NC_ = 3V, V T A = T MIN to T MAX - = 3.6V; -. V COM_ = V, 3V; I COM(ON) V NO_ = V NC_ = V, 3V, or floating T A = T MIN to T MAX - I IN_H V IN_ = V -.3 na Input Current with Input Voltage Low I IN_L V IN_ =.8V -.3 na Input Voltage High V IN_H. V Input Voltage Low V IN_L.8 V SWITCH DYNAMIC (Note 3) Turn-On Time t ON V COM_ =.5V, 6 5 Figure T A = T MIN to T MAX ns Turn-Off Time t OFF V COM_ =.5V, 4 Figure T A = T MIN to T MAX 5 ns Charge Injection Q C L = nf, V GEN =, R GEN =, 6.5 pc POWER SUPPLY Power-Supply Current I+ = 3.6V, V IN = or, all channels on or off -. µa Ω Ω na na na 4

5 ELECTRICAL CHARACTERISTICS Single +.5V Supply ( = +.5V, V INH =.7V CC, V INL =.5V, T A = T MIN to T MAX, unless otherwise noted.) (Note ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG SWITCH Analog Signal Range (Note 3) COM_ to NO_ or NC_ On-Resistance SWITCH DYNAMIC (Note 3) V COM_, V NO_, V V NC_ =.5V, 3 6 R ON I COM_ = ma, V NO =.V T A = T MIN to T MAX Turn-On Time t ON V NO_ or V NC_ = V, 6.5 ns Turn-Off Time t OFF V NO_ or V NC_ = V,.8 ns Note : 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: Guaranteed by design. Note 4: R ON = R ON (max) - R ON (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 range. Note 6: Leakage parameters are % tested at maximum-rated hot temperature and guaranteed by correlation at +5 C. Note 7: Off-Isolation = log (V COM_ / V NO_ ), V COM_ = output, V NO_ = input to off switch. Note 8: Between any two switches. Ω 5

6 Typical Operating Characteristics ( = +5V, =,, unless otherwise noted.) ON-RESISTANCE (Ω) ON-LEAKAGE (pa) ON-RESISTANCE vs. V COM_ = V = 3V V COM_ (V) = 5V ON-LEAKAGE vs. TEMPERATURE V COM_ =.5V V NC_ = FLOATING TEMPERATURE ( C) MAX464-6 toc MAX464-6 toc4 ON-RESISTANCE (Ω) I+ (na) ON-RESISTANCE vs. V COM_ AND TEMPERATURE T A = +7 C T A = +85 C T A = -4 C V COM_ (V) T A = C SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE ( C) MAX644-6 toc MAX464-6 toc5 OFF-LEAKAGE (pa) CHARGE INJECTION (pc).. OFF-LEAKAGE vs. TEMPERATURE V COM_ =.5V V NO_ = 4.5V TEMPERATURE ( C) CHARGE INJECTION vs. V COM_ V COM_ (V) MAX464-6 toc3 MAX464-6 toc6 VIN_H (V) V IN_H INPUT LOGIC HIGH THRESHOLD vs (V) MAX464-6 toc7 GAIN (db) FREQUENCY RESPONSE - IN = OUT = 5Ω ON-LOSS - -3 ON-PHASE OFF-ISOLATION k k M M M 5M FREQUENCY (Hz) MAX464-6 toc PHASE (degrees) 6

7 Typical Operating Characteristics (continued) ( = +5V, =,, unless otherwise noted.) THD + N (%) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY.5.45 = +V, Vp-p SIGNAL = +5V, Vp-p SIGNAL.5 = +.5V, Vp-p SIGNAL..5 = +3V, Vp-p SIGNAL. = +3.3V, Vp-p SIGNAL.5 = +5V, Vp-p SIGNAL 4k 8k k 6k k FREQUENCY (Hz) PIN MAX464 MAX465 MAX466, 3, 8 MAX464-6 toc9 NAME SWITCHING TIMES (ns) SWITCHING TIME vs. VOLTAGE (V) t ON t OFF FUNCTION R L = 3Ω C L = 35pF V COM =.5V MAX464/5/6 toc Pin Description, 8 NO NO3 Analog Switch Normally Open Terminal (bidirectional), 3, 8 NC NC3 Analog Switch Normally Closed Terminal (bidirectional) 3 NC Analog Switch Normally Closed Terminal (bidirectional), 4, 9,, 4, 9,, 4, 9, COM COM4 Analog Switch Common Terminal (bidirectional) 5, 6,, 3 5, 6,, 3 5, 6,, 3 IN IN4 Logic Control Inputs Ground NC4 Analog Switch Normally Closed Terminal (bidirectional) NO4 Analog Switch Normally Open Terminal (bidirectional) Positive Supply Voltage 7

8 Applications Information Power-Supply Sequencing and Overvoltage Protection Do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply 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 ma, add a small-signal diode (D) as shown in Figure. If the analog signal can dip below, add D. Adding protection diodes reduces the analog signal range to a diode drop (about.7v) below (for D), and to a diode drop above ground (for D). Leakage is unaffected by adding the diodes. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage () must not exceed 6V. Adding protection diodes causes the logic thresholds to be shifted relative to the power-supply rails. This can be significant when low supply voltages (+5V or less) are used. With a +5V supply, TTL compatibility is not guaranteed when protection diodes are added. Driving IN and IN all the way to the supply rails (i.e., to a V g NO_ POSITIVE SUPPLY COM_ diode drop higher than the pin, or to a diode drop lower than the pin) is always acceptable. Protection diodes D and D also protect against some overvoltage situations. With Figure s circuit, 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. D D MAX464 MAX465 MAX466 Figure. Overvoltage Protection Using Two External Blocking Diodes Test Circuits/Timing Diagrams MAX464 MAX465 MAX466 V COM _ SWITCH INPUT COM_ IN_ NO_, NC_ R L 3Ω SWITCH OUTPUT C L 35pF V OUT LOGIC INPUT V INH t R < ns t F < ns 5% 5% t OFF LOGIC INPUT SWITCH OUTPUT V OUT t ON.9 V UT.9 V OUT C L INCLUDES FIXTURE AND STRAY CAPACITANCE. V OUT = V COM ( R L R L + R ON ) Figure. Switching Time 8

9 MAX464 MAX465 MAX466 V GEN R GEN Figure 3. Charge Injection SIGNAL GENERATOR dbm ANALYZER R L nf COM_ COM_ NO_, NC_ IN_ V IN NO_, NC_ MAX464 MAX465 MAX466 IN_ Test Circuits/Timing Diagrams (continued) C L V IN_L OR V IN_H V OUT V OUT IN SIGNAL GENERATOR dbm ANALYZER OFF V INL OR V INH R L nf ON Q = ( V OUT )(C L ) COM IN NO V OUT NO IN COM OFF MAX464 MAX465 MAX466 5Ω V INL OR V INH Figure 4. Off-Isolation/On-Channel Bandwidth Figure 5. Crosstalk 9

10 CAPACITANCE METER f = MHz Test Circuits/Timing Diagrams (continued) nf COM_ NO_, NC_ Figure 6. Channel Off/On-Capacitance IN_ MAX464 MAX465 MAX466 V INL OR V INH Ordering Information (continued) PART TEMP. RANGE PIN-PACKAGE MAX465CUD MAX465CSD C to +7 C C to +7 C 4 TSSOP 4 Narrow SO MAX465CPD C to +7 C 4 Plastic DIP MAX465EUD -4 C to +85 C 4 TSSOP MAX465ESD -4 C to +85 C 4 Narrow SO MAX465EPD -4 C to +85 C 4 Plastic DIP MAX466CUD C to +7 C 4 TSSOP MAX466CSD C to +7 C 4 Narrow SO MAX466CPD C to +7 C 4 Plastic DIP MAX466EUD -4 C to +85 C 4 TSSOP MAX466ESD -4 C to +85 C 4 Narrow SO MAX466EPD -4 C to +85 C 4 Plastic DIP TRANSISTOR COUNT: 89 Chip Information

11 Package Information TSSOP.EPS

12 Package Information (continued) SOICN.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. Maxim Integrated Products, San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.