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Part: MAX328E
Category:
Communication
-> Network
-> Switches
-> Switches/Multiplexers
Description: Ultra-Low-Leakage, Single-Ended, Monolithic, CMOS Analog Multiplexer
Company: Maxim Integrated Products
Datasheet: Download MAX328E datasheet File size : 232 kB
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Datasheet text preview:
19-1006; Rev 2; 9/01
Ultra-Low Leakage Monolithic CMOS Analog Multiplexers
General Description
The MAX328/MA329 are monolithic CMOS analog multiplexers. The MAX328 is a single-ended, 1-of-8 device, and the MAX329 is a differential, 2-of-8 device. Designed to provide the lowest possible on- and offleakages, these multiplexers switch signals from high source impedance, providing the mux operates into a high-input-impedance op amp or A/D converter. The MAX328/MAX329 are pin-for-pin replacements for the popular DG508/DG509 in these applications. Adding an external 40k resistor to each input makes the MAX328/MAX329 an excellent fault-tolerant multip l e x e r . Low leakage (less than 1pA at +25°C) and 2.5k on-resistance allow the circuit to sustain 110V AC faults indefinitely while maintaining an error of less than 40nV for normal signals (i.e., 1pA times 40k). The MAX328/MAX329 work equally well with a single supply of 10V to 30V or dual supplies of ±5V to ±18V. They also perform well with unbalanced combinations of supply voltage, such as +12V and -5V or +5V and -15V. L o w power dissipation (1.9mW with ±15V supplies) allows use in portable applications.
Features
o Ultra-Low Off- and On-Leakage: 1pA Typ o Bidirectional Operation (Use as Mux or Demux) o TTL and CMOS Logic Compatibility o Analog Signal Range Includes Power-Supply Rails o Switching Speeds Less Than 1.5µs o Pin Compatible with DG508/DG509 and MAX358/MAX359 o Latchup Proof Construction
MAX328/MAX329
Ordering Information
PART MAX328CPE MAX328CWE MAX328CJE MAX328C/D MAX328EGE MAX328EPE MAX328EWE MAX328EJE MAX328MJE TEMP RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 16 Plastic DIP 16 Wide SO 16 CERDIP Dice* 16 QFN 16 Plastic DIP 16 Wide SO 16 CERDIP** 16 CERDIP**
Applications
Control Systems Data Logging Systems Aircraft Heads-Up Displays Data-Acquisition Systems Signal Routing
*Contact factory for dice specifications. **Contact factory for availability. Substrate may be allowed to float or be connected to V+. Ordering Information and Pin Configurations continued at end of data sheet.
Typical Operating Circuit
1-OF-8 CHANNEL SEQUENTIAL MUX WITH 120V AC FAULT CAPABILITY +15V -15V
Pin Configurations
16 A1 15 A2 14 GND
TOP VIEW
A0 1 EN 2 V- 3
40k 1/2W ANALOG INPUT 40k 1/2W
V+ S1
GND
VOP AMP D OUT
S1 4 S2 5 S3 6 S4 7
MAX328
13 V+ 12 S5 11 S6 10 S7 9 S8
MAX328
S8 A0 A1 A2
+15V
ANALOG INPUT
i BIAS < 1pA EN
D8
DIP/SO
V+ QB CLK IN N.C. BIN AIN A0 1 EN 2 V- 3 S1A 4 QA V01 V02 GND N.C. S2A 5 S3A 6 +15V S4A 7 DA 8 EN IN (MUX ON/OFF CONTROL) 16 A1 15 GND 14 V+
DM7493
QC QO
MAX329
13 S1B 12 S2B 11 S3B 10 S4B 9 DB
DIP/SO
________________________________________________________________ Maxim Integrated Products
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Ultra-Low Leakage Monolithic CMOS Analog Multiplexers MAX328/MAX329
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ .......+44V GND ....+25V Digital Inputs (Note 1), VS, VD ....-2V to (V+ + 2V) Current (Any Terminal, Except S or D)........30mA Continuous Current, S or D (pulsed at 1ms, 10% duty cycle max) ....40mA Operating Temperature Range MAX328/329 C _ _ ....0°C to +70°C MAX328/329 E _ _ ..........-40°C to +85°C MAX328/329 M _ _........-55°C to +125°C Power Dissipation (Package) (Note 1) 16-Pin CERDIP (Note 2) .....900mW 16-Pin Plastic DIP (Note 3)..........470mW 16-Pin Wide SO (Note 4) ....750mW 16-Pin QFN (Note 5) .........1538mw Storage Temperature........-65°C to +150°C
Note 1: Note 2: Note 3: Note 4: Note 5:
All leads soldered or welded to PC board. Derate 12mW/°C above +75°C. Derate 6.3mW/°C above +75°C. Derate 10mW/°C above +75°C. Derate 19.2mW/°C above +75°C.
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
(V+ = +15V, V- = -15V, GND = 0V, TA = +25°C, unless otherwise noted.)
LIMITS PARAMETER SYMBOL TEST CONDITIONS MIN SWITCH Analog Signal Range Drain-Source On-Resistance V ANALOG VD = 10V, IS = 100µA VD = -10V, IS = 100µA Seq. each switch on, VAL = 0.8V, VAH = 2.4V ±15 1.5 1.0 2.5 2.5 ±15 1.5 1.0 3.5 k 3.5 V MAX328M MAX329M TYP MAX MAX328C/E MAX329C/E MIN TYP MAX UNITS
RD S ( O N )
Greatest Change in Drain-Source OnResistance Between Channels Source Off-Leakage Current (Note 6) MAX328 Drain OffLeakage Current (Note 6) MAX329 MAX328 Drain OnLeakage Current (Note 6) MAX329
RDS(ON)
RD S ( o n ) = RDS(ON) Max - RDS(ON) Min ( ) RDS(ON) Ave VS = 10V, VD = -10V VS = -10V, VD = 10V VD = 10V, VS = -10V VD = -10V, VS = 10V VD = 10V, VS = -10V VD = -10V, VS = 10V VS (all) = VD = 10V VS (all) = VD = -10V VS (all) = VD = 10V VS (all) = VD = -10V Seq. each switch on, VAL = 0.8V, VAH = 2.4V VEN = 0V
2
2
%
IS ( O F F )
0.1 0.3 0.3 1.0 0.3 0.5 3.0 2.0 1.5 1.0
±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10
0.1 0.3 0.3 1.0 0.3 0.5 3.0 2.0 1.5 1.0
±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10
pA
ID ( O F F )
VEN = 0V
pA
ID ( O N )
pA
2
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Ultra-Low Leakage Monolithic CMOS Analog Multiplexers
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, V- = -15V, GND = 0V, TA = +25°C, unless otherwise noted.)
LIMITS PARAMETER SYMBOL TEST CONDITIONS MIN INPUT Address Input Current, Input Voltage High Address Input Current, Input Voltage Low DYNAMIC Switching Time of Multiplexer Break-Before-Make Interval Enable Turn-On Time Enable Turn-Off Time Off-Isolation Source Off-Capacitance Drain OffCapacitance MAX328 MAX329 tTRANSITION See Figure 1 tO P E N tON(EN) tOFF(EN) OIRR C S(OFF) C D(OFF) See Figure 2 See Figure 3 See Figure 3 VEN = 0V, RL = 1k, CL = 15pF, VS = 7VRMS, f = 500kHz VS = 0V VD = 0V VA = +10V Charge Injection (Note 8) SUPPLY Positive Supply Current Negative Supply Current Power-Supply Range for Continuous Operation (Note 7) I+ IVOP VEN = 2.4V VEN = 2.4V VA = 0V/5V VA = 0V/5V ±5 4.5 1 200 -100 ±18 ±5 4.5 1 200 -100 ±18 µA µA V Q (INJ) VA = 0V VA = -10V VEN = 0V, f = 1MHz VEN = 0V, f = 1MHz 84 1.8 8.0 4.0 1 2 4 5 0.2 1.0 0.7 84 1.8 8.0 4.0 1 2 4 5 pc 1.0 0.2 1.5 1.0 1.5 µs µs µs µs dB pF pF IAH IAL VA = 2.4V VA = 15V VEN = 2.4V VEN = 0V All VA = 0V 0.001 0.001 0.001 0.001 ±1 ±1 ±1 ±1 0.001 0.001 0.001 0.001 ±1 ±1 ±1 ±1 µA µA MAX328M MAX329M TYP MAX MAX328C/E MAX329C/E MIN TYP MAX UNITS
MAX328/MAX329
Note 6: All leakage parameters are 100% tested at maximum rated operating temperature, i.e., +70°C, +85°C, +125°C, and guaranteed by correlation at +25°C. Note 7: Electrical characteristics, such as On-Resistance, change when power supplies other than ±15V are used. Power-supply range is a design characteristic, not production tested. Note 8: Guaranteed by design. Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.
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