High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578

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High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578

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19-1396; 10/98
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
MAX4578/MAX4579 high-voltage, 8-channel CMOS multiplexers. MAX4578 dual 4-channel MAX4579 ideal precision calibration system self-monitoring applications. These calibration multiplexers (cal-muxes) have precision resistordividers generate accurate voltage ratios from input reference voltage. reference ratios include 15/4096 4081/4096 external reference voltage, accurate bits, 1/2(V+) 5/8(V+ V-), accurate bits. external reference voltage well ground also switched output. MAX4578/MAX4579 have enable inputs address latching. digital inputs have 0.8V 2.4V logic thresholds, ensuring both TTL- CMOS-logic compatibility when using single +12V dual ±15V supplies. Protection diodes inputs provide >2kV rating. MAX4578/MAX4579 operate from single +4.5V +36V supply from dual supplies ±4.5V ±20V. On-resistance (350 max) matched between switches max. Each switch handle Rail-to-Rail® analog signals. off-leakage current 20pA +25°C 1.25nA +85°C. MAX4578/MAX4579 available small 20-pin SSOP, packages.
Features
On-Chip Gain Offset Divider Networks Provide 15-Bit Accurate Output Ratios On-Chip Divider Networks Provide 8-Bit Accurate Output Ratios (max) (max) Matching Between Channels 10pC (max) Charge Injection Guaranteed 20pA Off-Leakage Current Rail-to-Rail Signal Handling Small 20-Pin SSOP, Packages
MAX4578/MAX4579
Ordering Information
PART MAX4578CAP MAX4578CWP MAX4578CPP MAX4578EAP MAX4578EWP MAX4578EPP TEMP. RANGE +70°C +70°C +70°C -40°C +85°C -40°C +85°C -40°C +85°C PIN-PACKAGE SSOP Wide Plastic SSOP Wide Plastic
Ordering Information continued data sheet.
Applications
Data-Acquisition Systems Test Equipment Avionics Audio Signal Routing Networking
VREFHI
Configurations/ Functional Diagrams
MAX4579
4081R LATCH
LOGIC DECODER
4081R
REFLO COMA NO1A NO2A NO3A NO4A
COMB NO4B NO3B NO2B NO1B
Rail-to-Rail registered trademark Nippon Motorola, Ltd.
MAX4578 appears data sheet.
Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 1-800-835-8769.
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
ABSOLUTE MAXIMUM RATINGS
(Voltage Referenced GND) .-0.3V +44V .-44V +0.3V V-.-0.3V +44V CAL, LATCH NO_, COM_, REFHI, REFLO (Note .(V- 0.3V) 0.3V) Continuous Current (any terminal).±30mA Peak Current, COM_ (pulsed 1ms, duty cycle max) .±100mA Continuous Power Dissipation +70°C) SSOP (derate 8mW/°C above +70°C) .640mW Wide (derate 8mW/°C above +70°C).800mW Plastic (derate 10.53mW/°C above +70°C) .842mW Operating Temperature Ranges MAX4578C_P/MAX4579C_P.0°C +70°C MAX4578E_P/MAX4579E_P .-40°C +85°C Storage Temperature Range .-65°C +160°C Lead Temperature (soldering, 10sec) .+300°C
Note Signals NO_, COM_, LATCH, CAL, exceeding clamped internal diodes. Limit forward current maximum current ratings.
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS-Dual ±15V Supplies
+15V ±10%, -15V ±10%, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note -0.05PARAMETER 0.05 0.005 SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels (Note Off-Leakage Current (Note VCOM_, VNO_ RDS(ON) (Note ICOM_ 0.2mA, VNO_ ±10V, 13.5V, -13.5V ICOM_ 0.2mA, VNO_ ±10V, 13.5V, -13.5V VNO_ +14V, VCOM_ ±14V, 16.5V, -16.5V MAX4578 MAX4579 MAX4578 MAX4579 +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX -0.02 -1.25 -0.05 -6.5 -0.05 -3.25 -0.05 -6.5 -0.05 -3.25 0.008 0.006 0.005 0.005 0.001 V220 0.02 1.25 0.05 0.05 3.25 0.05 0.05 3.25 SYMBOL CONDITIONS UNITS
INO_(OFF)
Off-Leakage Current (Note
VCOM_ ±14V, VNO_ +14V, ICOM_(OFF) 16.5V, -16.5V VCOM_ ±14V, VNO_ ±14V, ICOM_(ON) 16.5V, -16.5V
On-Leakage Current (Note
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS-Dual ±15V Supplies (continued)
+15V ±10%, -15V ±10%, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER LOGIC INPUTS Input High Voltage Input Voltage Input Current with Input Voltage High Input Current with Input Voltage SUPPLY Power-Supply Range Positive Supply Current VLATCH VCAL 16.5V, -16.5V (Note VLATCH VCAL 16.5V, -16.5V (Note VLATCH VCAL 16.5V, -16.5V (Note +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX 0.001 ±4.5 VLATCH VCAL VLATCH VCAL 0.001 0.001 SYMBOL CONDITIONS UNITS
MAX4578/MAX4579
Negative Supply Current
Supply Current
IGND
DYNAMIC CHARACTERISTICS Transition Time Break-Before-Make Interval (Note Enable Turn-On Time Enable Turn-Off Time Charge Injection (Note Off-Isolation Crosstalk Between Channels (Note Logic Input Capacitance Off-Capacitance Off-Capacitance On-Capacitance tTRANS tOPEN tOFF VCTE VISO COFF CCOM_(OFF) CCOM_(ON) Figure Figure Figure Figure 1nF, VNO_ Figure Figure 2.4V, 1MHz, VGEN 1Vp-p, Figure 1MHz 1MHz, Figure 1MHz, Figure 1MHz, 2.4V, Figure +25°C TMIN TMAX +25°C +25°C TMIN TMAX +25°C TMIN TMAX +25°C +25°C +25°C +25°C +25°C +25°C +25°C
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
ELECTRICAL CHARACTERISTICS-Dual ±15V Supplies (continued)
+15V ±10%, -15V ±10%, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER LATCH TIMING (Note Setup Time Hold Time Enable Setup Time Pulse Width, LATCH Enable INTERNAL DIVIDERS VREFHI 10V, REFLO +25°C TMIN TMAX +25°C TMIN TMAX +25°C Divider Output Referenced TMIN TMAX +25°C Divider Output Referenced TMIN TMAX Output Resistance Offset Divider Output Resistance Gain Divider Output Resistance Divider Output Resistance Divider Output Resistance (REFHI, REFLO, GND) Additional Positive Supply Current (Note (Note (Note (Note (Note (Note divider active, +25°C +25°C +25°C +25°C +25°C +25°C 2544 4096 2560 4096 2576 4096 2032 4096 2544 4096 2048 4096 2560 4096 2064 4096 2576 4096 14.9 4096 14.9 4096 4080.9 4096 4080.9 4096 2032 4096 4096 4096 4081 4096 4081 4096 2048 4096 15.1 4096 15.1 4096 4081.1 4096 4081.1 4096 2064 4096 tMPW Figure Figure Figure Figure +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX SYMBOL CONDITIONS UNITS
Offset Divider Output
Gain Divider Output
VREFHI 10V, REFLO
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS-Dual ±15V Supplies (continued)
+15V ±10%, -15V ±10%, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER Additional Positive Supply Current (Note Additional Negative Supply Current (Note REFHI, REFLO Input Range (Note Input Resistance (REFHI, REFLO) (Note Offset divider active, gain divider active +25°C SYMBOL CONDITIONS divider active, divider active, +25°C +25°C UNITS
MAX4578/MAX4579
ELECTRICAL CHARACTERISTICS-Dual Supplies
±10%, ±10%, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels (Note Off-Leakage Current (Note Off-Leakage Current (Note VNO_, VCOM_ RDS(ON) (Note ICOM_ 0.2mA, VNO_ ±3V, 4.5V, -4.5V ICOM_ 0.2mA, VNO_ 3.0V, 4.5V, -4.5V VNO_ +4.5V, VCOM_ ±4.5V, 5.5V, -5.5V MAX4578 MAX4579 MAX4578 MAX4579 +25°C TMIN TMAX +25°C +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX -0.02 -1.25 -0.05 -6.5 -0.5 -6.5 -0.05 -6.5 -0.05 -3.25 0.008 0.005 0.005 0.001 0.02 1.25 0.05 0.05 0.05 3.25 V660 1100 SYMBOL CONDITIONS UNITS
RDS(ON)
INO(OFF)
VCOM_ ±4.5V, VNO_ +4.5V, ICOM_(OFF) 5.5V, -5.5V VCOM_ ±4.5V, VNO_ ±4.5V ICOM_(ON) floating, 5.5V, -5.5V
On-Leakage Current (Note
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
ELECTRICAL CHARACTERISTICS-Dual Supplies (continued)
±10%, ±10%, logic levels 2.4V 0.5V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER LOGIC INPUTS (Note Input High Voltage Input Voltage Input Current with Input Voltage High Input Current with Input Voltage VLATCH VCAL VLATCH VCAL -1.0 -1.0 0.001 0.001 SYMBOL CONDITIONS UNITS
DYNAMIC CHARACTERISTICS (Note Transition Time Break-Before-Make Interval Enable Turn-On Time Enable Turn-Off Time tTRANS tOPEN tOFF VNO1 VNO8 Figure Figure VNO1 Figure VNO1 Figure +25°C TMIN TMAX +25°C +25°C TMIN TMAX +25°C TMIN TMAX 0.675
ELECTRICAL CHARACTERISTICS-Single +12V Supply
+12V, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER SWITCH Analog Signal Range On-Resistance On-Resistance Matching Between Channels (Note Off-Leakage Current (Notes VNO_, VCOM_ RDS(ON) (Note ICOM_ 0.2mA, VNO_ +25°C TMIN TMAX +25°C +25°C TMIN TMAX -0.02 -1.25 0.001 0.02 1.25 SYMBOL CONDITIONS UNITS
R(ON)
ICOM_ 0.2mA, VNO_ VCOM_ 11V; VNO_ 11V,
INO(OFF)
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS-Single +12V Supply (continued)
+12V, logic levels 2.4V 0.8V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER SWITCH (continued) MAX4578 Off-Leakage Current (Notes VCOM_ 11V, ICOM_(OFF) VNO_ MAX4579 MAX4578 MAX4579 +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX +25°C TMIN TMAX -0.05 -6.5 -0.05 -3.25 -0.05 -6.5 -0.05 -3.25 VLATCH VCAL VLATCH VCAL 0.001 0.001 0.006 0.005 0.005 0.05 0.05 3.25 0.05 0.05 3.25 SYMBOL CONDITIONS UNITS
MAX4578/MAX4579
On-Leakage Current (Notes LOGIC INPUTS Input High Voltage Input Voltage Input Current with Input Voltage High Input Current with Input Voltage
VCOM_ 11V, ICOM_(ON) VNO_ 11V, floating
DYNAMIC CHARACTERISTICS (Note Transition Time Break-Before-Make Interval Enable Turn-On Time Enable Turn-Off Time tTRANS tOPEN tOFF VNO1 VNO8 Figure Figure Figure Figure +25°C TMIN TMAX +25°C +25°C TMIN TMAX +25°C TMIN TMAX 1100 1100
Note algebraic convention, where most negative value minimum most positive value maximum, used this data sheet. Note Guaranteed design. Note RON(MAX) RON(MIN). Note Leakage parameters 100% tested maximum-rated temperature guaranteed correlation +25°C. Note logic inputs float during power-on, connect pull-up from LATCH Applications Information section. Note Off-Isolation 20log10 (VCOM VNO), VCOM output, input switch. Note Between switches. Note Leakage parameters testing single supply guaranteed correlation with dual supplies.
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
Typical Operating Characteristics
+25°C, unless otherwise noted.)
ON-RESISTANCE VCOM (DUAL SUPPLIES)
MAX4578/79
ON-RESISTANCE VCOM TEMPERATURE (±15V DUAL SUPPLIES)
MAX4578/79
ON-RESISTANCE VCOM TEMPERATURE (±5V DUAL SUPPLIES)
+25°C -40°C
MAX4578/79
±4.5V
+15V -15V +85°C +70°C +25°C -40°C
+85°C +70°C
±15V VCOM ±12V ±7.5V ±10V
VCOM
VCOM
ON-RESISTANCE VCOM (SINGLE SUPPLY)
MAX4578/79
ON-RESISTANCE VCOM TEMPERATURE SINGLE SUPPLY)
1800 1600 1400 1200 1000 -40°C +70°C +25°C +85°C
MAX4578/79
ON-RESISTANCE VCOM TEMPERATURE (12V SINGLE SUPPLY)
MAX4578/79
2100 1900 +4.5V 1700 1500 1300 1100 +7.5V +10V +12V
2000
+85°C +70°C +25°C -40°C
12.5 VCOM
+12V VCOM
VCOM
LEAKAGE CURRENT TEMPERATURE
MAX4578/79
SUPPLY CURRENT TEMPERATURE
MAX4578/79
TURN-ON/TURN-OFF TIME SUPPLY
MAX4578/79
1000 LEAKAGE CURRENT (nA) ICOM (ON) 0.01 0.001 0.0001 (OFF) ICOM (OFF) +15V -15V
100µ 100n
tON, tOFF (ns)
tOFF
TEMPERATURE (°C)
TEMPERATURE (°C)
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
Typical Operating Characteristics (continued)
+25°C, unless otherwise noted.)
MAX4578/MAX4579
TURN-ON/TURN-OFF TIME TEMPERATURE (±15V)
MAX4578/79
TURN-ON/TURN-OFF TIME TEMPERATURE (±5V)
MAX4578/79
TURN-ON/TURN-OFF TIME TEMPERATURE (12V)
tON, tOFF (ns) tOFF +12V
MAX4578/79
tON, tOFF (ns) tOFF +15V -15V
tON, tOFF (ns) tOFF
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION VCOM
MAX4578/79
OFFSET DIVIDER OUTPUT VREFHI
MAX4578/79
OFFSET DIVIDER OUTPUT TEMPERATURE
15.080 15.060 OUTPUT RATIO (LSB) 15.040 15.020 15.000 14.980 14.960 14.940 14.920 14.900 VREFHI VREFLO +15V -15V
MAX4578/79
(pC) VCOM ±12V ±15V
15.100 15.080 15.060 OUTPUT RATIO (LSB) 15.040 15.020 15.000 14.980 14.960 14.940 14.920 14.900 ±15V VREFLO
15.100
VREFHI
TEMPERATURE (°C)
GAIN DIVIDER OUTPUT VREFHI
MAX4578/79
GAIN DIVIDER OUTPUT TEMPERATURE
MAX4578/79
DIVIDER OUTPUT SUPPLY VOLTAGE
2058.00 2056.00 OUTPUT RATIO (LSB) 2054.00 2052.00 2050.00 2048.00 2046.00 2044.00 2042.00 2040.00
MAX4578/79
4081.100 4081.080 4081.060 OUTPUT RATIO (LSB) 4081.040 4081.020 4081.000 4080.980 4080.960 4080.940 4080.920 4080.900 ±15V VREFLO
4081.100 4081.080 4081.060 OUTPUT RATIO (LSB) 4081.040 4081.020 4081.000 4080.980 4080.960 4080.940 4080.920 4080.900 VREFHI VREFLO +15V -15V
2060.00
VREFHI
TEMPERATURE (°C)
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
Typical Operating Characteristics (continued)
+25°C, unless otherwise noted.)
DIVIDER OUTPUT TEMPERATURE
MAX4578/79
DIVIDER OUTPUT SUPPLY VOLTAGE
MAX4578/79
DIVIDER OUTPUT TEMPERATURE
2568 2566 OUTPUT RATIO (LSB) 2564 2562 2560 2558 2556 2554 ±15V
MAX4578/79
2055 2054 2053 OUTPUT RATIO (LSB) 2052 2051 2050 2049 2048 2047 2046 2045 ±15V
2570
2570
2565 OUTPUT RATIO (LSB)
2560
2555
2550
2545 TEMPERATURE (°C)
2552 TEMPERATURE (°C)
ROUT TEMPERATURE (OFFSET DIVIDER GAIN DIVIDER)
MAX4578/79
ROUT TEMPERATURE DIVIDER DIVIDER)
MAX4578/79
FREQUENCY RESPONSE
MAX4578/79
+15V -15V
6100 5900 5700 ROUT 5500 5300 5100 DIVIDER +15V -15V
INSERTION LOSS 40°/div
ROUT
GAIN DIVIDER
ON-PHASE 10dB/ DIVIDER OFF-ISOLATION
OFFSET DIVIDER
4900 4700
TEMPERATURE (°C)
4500 100k 100M TEMPERATURE (°C) FREQUENCY (Hz)
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
Descriptions
MAX4578 (Single 8-to-1 Cal-Mux)
NAME VREFHI REFLO LATCH Ground Negative Supply Voltage Reference High Voltage Input Reference Voltage Input Output Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Address Address Address Calibration Control Input Multiplexer Enable Address Latch Control Input FUNCTION Positive Supply Voltage
MAX4578/MAX4579
MAX4579 (Dual 4-to-1 Cal-Mux)
NAME VREFHI REFLO COMA NO1A NO2A NO3A NO4A NO1B NO2B NO3B NO4B COMB LATCH Ground Negative Supply Voltage Reference High Voltage Input Reference Voltage Input Multiplexer Output Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Channel Input Multiplexer Output Address Address Calibration Control Input Multiplexer Enable Address Latch Control Input FUNCTION Positive Supply Voltage
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
Truth Tables
MAX4578 (Single 8-to-1 Cal-Mux)
LATCH switches dividers open. high-Z. Latch contents State latched when LATCH high. Divider, VCOM 2048 4096 (V+) REFHI REFLO Divider, VCOM= 2560 4096 Gain Divider Mode VCOM (4081 4096) (VREFHI VREFLO) Offset Divider Mode VCOM 4096) (VREFHI VREFLO) switches dividers open. high-Z.
Don't Care
MAX4579 (Dual 4-to-1 Cal-Mux)
LATCH COMA switches dividers open. COMA high-Z. State latched NO1A NO2A NO3A NO4A Gain Divider Mode Offset Divider Mode switches dividers open. COMA high-Z. COMB switches dividers open. COMB high-Z. State latched NO1B NO2B NO3B NO4B REFLO REFLO switches dividers open. COMB high-Z.
Don't Care
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
Detailed Description
MAX4578/MAX4579 multiplexers with additional calibration features. Internal resistor-dividers generate accurate voltage ratios from external voltage reference, allowing zero full-scale calibration systems, well facilitation system self-monitoring. access resistor-dividers, assert pin. When ENABLE asserted, three address pins select various resistor-divider external reference outputs. MAX4578/ MAX4579 also contain LATCH input that allows state address signals captured. they reverse-biased differently. Each biased either analog signal. This means their leakage varies signal varies. difference two-diode leakage from signal path pins constitutes analog signal-path leakage current. analog-leakage current flows supply terminals, other switch terminal, which explains both sides given switch show leakage currents either same opposite polarity. There connection between analog-signal paths GND. analog-signal paths consist N-channel P-channel MOSFET with their sources drains paralleled their gates driven phase with logic-level translators. power internal logic logic-level translators input-logic thresholds. logiclevel translators convert logic levels switched signals drive gates analog switches. This drive signal only connection between logic supplies analog supplies. pins have protection Increasing effect logic-level thresholds, does increase drive P-channel switches, which reduces their on-resistance. also sets negative limit analog-signal voltage. logic-level thresholds CMOS- TTLcompatible when greater than +4.5V.
MAX4578/MAX4579
Calibration Functions
gain-divider, offset-divider, REFHI, REFLO modes allow calibration offset gain errors systems. gain-divider mode outputs voltage ratio that 4081/4096 VREFHI VREFLO, accurate 0.1/4096 better than bits. offset-divider mode outputs voltage ratio that 15/4096 REFHI VREFLO, also accurate 0.1/4096. REFHI mode allows voltage REFHI switched output. REFLO mode allows voltage REFLO switched output.
Self-Monitoring Functions
self-monitoring functions intended allow measure supply voltage. MAX4578 internal divide-by-two resistor string between that accurate bits. also resistor string between that accurate bits. This divider string allows measurement negative supply with unipolar ADC. also switched output, eliminating need additional multiplexer channel.
Bipolar-Supply Operation
MAX4578/MAX4579 operate with bipolar supplies between ±4.5V ±20V. supplies need symmetrical, their cannot exceed absolute maximum rating 44V. Note: connect MAX4578/MAX4579 connect logic-level input pins logic-level signals. logic-level outputs exceed absolute maximum ratings, which will cause damage part and/or external circuits.
Applications Information
MAX4578/MAX4579's construction typical most CMOS analog switches. There three supply pins: GND. positive negative power supplies provide drive internal CMOS switches limits analog voltage switch. Reverse-biased protection diodes internally connected between each analog signal both voltage exceeds these diodes will conduct. During normal operation, these reverse-biased diodes leak, forming only current drawn from Virtually analog leakage current through diodes. Although diodes given signal identical, therefore fairly well balanced,
Single-Supply Operation
MAX4578/MAX4579 operate from single supply between +4.5V +36V when connected GND. bipolar precautions must observed (see Bipolar Supply Operation section). However these parts optimized ±15V operation, most characteristics degraded significantly when departing from ±15V. overall supply voltage lowered, switching speed, on-resistance, off-isolation, distortion will degrade, supply current will decrease (see Typical Operating Characteristics section).
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
Single-supply operation also limits signal levels interferes with ground referenced signals. When signals limited -0.3V. Voltages below -0.3V clipped internal ESD-protection diodes, parts damaged excessive current flows.
Power
When power MAX4578/MAX4579 (i.e., Absolute Maximum Ratings still apply. This means that neither logic-level inputs signals COM_ exceed ±0.3V. Voltages beyond ±0.3V cause internal ESD-protection diodes conduct, parts damaged excessive current flows.
Power
During power on-chip latches will strobe whatever addresses present goes high before LATCH reaches logic high. When this condition occurs, internal dividers connected between supplies immediately turn causing higher supply current (1.4mA) when enable input toggled. Avoid this condition ensuring that stays until remaining logic inputs valid. accomplish this, connect resistor from ground apply voltage before other logic inputs high.
_Test Circuits/Timing Diagrams
+15V LATCH -15V NO2-NO7
MAX4578
VCOM 10pF LOGIC -15V INPUT VNO1, VNO1B SWITCH OUTPUT VCOM 20ns 20ns
+15V LATCH -15V NO1B NO2B-NO3B NO1A-NO2A
VNO8, VNO4B
tTRANS VCOM 10pF
tTRANS
MAX4579 NO4B
COMB
Figure Transition Time
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
Test Circuits/Timing Diagrams (continued)
+15V LATCH +15V LATCH NO1A-NO4B NO1B-NO4B LOGIC INPUT 0.8VNO_ COMA -15V VCOM 10pF SWITCH OUTPUT VCOM -15V 10pF NO1-NO8 LOGIC INPUT 20ns 20ns
MAX4578/MAX4579
MAX4578
VCOM
0.8VNO_ SWITCH OUTPUT VCOM
tOPEN
20ns 20ns
MAX4579
tOPEN
Figure Break-Before-Make Interval
+15V LATCH NO2-NO8 VCOM +15V LATCH -15V 10pF 0.8(VNO1, VNO1B) VCOM NO1B 20ns 20ns
MAX4578
NO2B-NO4B NO1A-NO4A
MAX4579
COMB -15V VCOM 10pF
tOFF
Figure Enable Switching Time
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
_Test Circuits/Timing Diagrams (continued)
+15V CHANNEL SELECT LOGIC INPUT VCOM VOUT VCOM VOUT MEASURED VOLTAGE CHARGE TRANSFER ERROR WHEN CHANNEL TURNS OFF. VOUT +15V CHANNEL SELECT LATCH 100pF V-15V VOUT VOUT VCOM VOUT MEASURED VOLTAGE CHARGE TRANSFER ERROR WHEN CHANNEL TURNS OFF. LOGIC INPUT COMA VCOM
MAX4578
LATCH
100pF V-15V
MAX4579
Figure Charge Injection
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
_Test Circuits/Timing Diagrams (continued)
+15V 10nF NETWORK ANALYZER VOUT VOUT
MAX4578/MAX4579
OFF-ISOLATION 20log
MAX4578 MAX4579
COM_ LATCH 10nF
CROSSTALK 20log VCOM MEAS.
-15V
NOTES: MEASUREMENTS STANDARDIZED AGAINST SHORT SOCKET TERMINALS. OFF-ISOLATION MEASURED BETWEEN "OFF" TERMINAL EACH SWITCH. LOSS MEASURED BETWEEN "ON" TERMINAL EACH SWITCH.
Figure Off-Isolation/Crosstalk
+15V CHANNEL SELECT CAL, LATCH, VNO1 1MHz CAPACITANCE ANALYZER 1MHz
+15V NO1A CAL, LATCH, 1MHz CAPACITANCE ANALYZER 1MHz
MAX4578
CHANNEL SELECT
MAX4579 NO4A
COMA
-15V
-15V
Figure NO_/COM_ Capacitance
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
_Test Circuits/Timing Diagrams (continued)
+15V +15V
LATCH
LATCH
MAX4578
NO1, NO3-NO8 VCOM NO1, NO3-NO8
MAX4578
-15V
-15V
LATCH ADDRESS (A_)
tMPW
LATCH
NOTE: TIMING MEASUREMENT REFERENCE LEVEL
Figure Setup Time, Hold Time, Latch Pulse Width
Figure Enable Setup Time
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers
Configurations/ Functional Diagrams (continued)
MAX4578/MAX4579
MAX4578
LOGIC DECODER
LATCH
VREFHI 15R1
4081R1
15R1 4081R1 REFLO
High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578/MAX4579
Ordering Information (continued)
PART MAX4579CAP MAX4579CWP MAX4579CPP MAX4579EAP MAX4579EWP MAX4579EPP TEMP. RANGE +70°C +70°C +70°C -40°C +85°C -40°C +85°C -40°C +85°C PIN-PACKAGE SSOP Wide Plastic SSOP Wide Plastic
_Chip Information
TRANSISTOR COUNT:
Package Information
SSOP.EPS
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 1998 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers MAX4578

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