19-3985; Rev 2: 7/96 General Description The MAX326/MAX327 quad, singie-pole-single-throw (SPST), CMOS analog switches upgrade the DG201A/DG202 and DG211/DG212 with at least 100 times less leakagethe MAX326/MAX327 have 10pA maximum leakage, while the 0G201A/DG202 have 1000PA and the DG211/0G212 have S5O000pA. Low leakage currents support high system accuracy and make the devices useful for switching into high impedan- ces, such as large-value feedback resistors in closed- loop gain configurations. And the MAX326/MAX327 logic inputs are CMOS and TTL compatible. The MAX326/MAX327's low charge injection (2pC typ) minimizes signal error. Operation from single supplies (+10V to +30), dua! supplies (+5V to +18V), and unbal- anced combinations (i.e. +12V and -5V, or +5V and -15V) maximizes design flexibility. Both parts also feature inter- changeable inputs/outputs and Maxim's standard latchup-proof construction. Extremely low power consumption (5.25mW max) makes the MAX326/MAX327 ideal for portable applications. Other programmable .applications include integrators with long RC time constants, current-to-voltage con- verters, high-gain amplifiers, and voitage dividers. Applications High-Accuracy Data Acquisition Systems Sample-and-Hold Circuits Communication Systems Guidance and Control Systems Test Equipment ____s_sTypical Operating Circuit C=001pF iM a a oa | vm gp {Lan MAX326. FS MAX327 PROGRAMMABLE RC-TIME CONSTANT INTEGRATOR RC = 1ms TO 100ms IN FOUA STEPS NOTE: PINS 1, 8.9, AND 16 ARE CHANNEL-CONTROL PINS. MA AMALIA Quad, SPST, Ultra-Low Leakage, CMOS Analog Switches Features @ 10pA Max Leakage (<1pA Typ) # Plug-in, Low-Leakage Upgrades for DG201A/0G202 and 0G211/DG212 @ Interchangeable Inputs/Outputs @ CMOS and TTL Compatible @ 2pC Typ Charge injection Single- (+10V to +30V), Bipolar- (25V to +18V), or Unbalanced- (i.e. +12V and -5V) Supply Operation @ 5.25mW Max Power Consumption @ Latehup-Proof Construction Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX326CPE 0C to +70C 16 Plastic DIP MAX326CEE 0C to +70C 16 QSOP MAX326CSE OC to +70C 16 Narrow SO MAX326CJE OC to +70C 16 CERDIP** MAX326C/D OC to +70C Dice* MAX326EPE -40C to +85C 16 Plastic DIP MAX326EEE -40C to +85C 16 QSOP MAX326ESE -40C to +85C 16 Narrow SO MAX326EJE -40C to +85C 16 CERDIP* MAX326MJE -8C ta +125C 16 CERDIP** Ordering information continued on page 6. "Contact factory for dice specifications. Contact factory for availability. Pin Configuration | TOP VIEW : N/ mw OH > -C Hie] ine obi L2r> 3 1 a 115 | D2 SI a} al $2 eno [S| MAX327 a NC. st [eb soil] s 04 (7h 5 r {10] 03 IN4 (aH }- Cc Hal 8 DIP/so/asoP |___MAX326__ X327 |_ LOGIC | SWITCH | LOGIC | SWITCH | 0 ON 1 ON 1 OFF 9 OFF PRAKISA Maxim integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 LEEXVW/OSEXVNMAX326/MAX327 Quad, SPST, Ultra-Low Leakage, CMOS Analog Switches ABSOLUTE MAXIMUM RATINGS Vin to GND... becuecuausenesasaugeceestenevccasescotesveesteenuteevaucenancs V, V+ Vs, Vp (Note 1)........ BV) ta (V+ + 0.3V) V+ to GND (V- = OV ccc ccc cere ceeccsersetevavnereveerrcees +40V Current (any terminal, except S$ or D). : Continuous Current, S of D.......... we Peak Current, SOF Do ecesceee cere ceteccnerensteseneinres 70mA (pulsed at tms, 10% duty cycle max) Continuous Total Power Dissipitaition (Note 2} 16-Pin Plastic DIP (derate 7.5mMW/C above +70C)....470mW 16-Pin QSOP (derate 9.52mWw/C above +70C .......... 762mW 16-Pin Narrow SO (derate 10mW/C above +70C) ....400mWw 16-Pin CERDIP (derate 10mW/C above +70C)......... g0O0mWw Note 1: Note 2: All leads soldering or welding to PC board. Operating Temperature Ranges: MAX32 _C MAX32 _ E MAX32 _ MJE .. . Storage Temperature Range .... Lead Temperature (soldering, 10 sec) Exceeding this limit is acceptable as long as the S or D current is less than 20mA. OC ta +70C -40C to +85C -55C to +125C -65C to +150C . +300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation af 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, Ta = +25C. unless otherwise noted.) MAX32_M MAX32_C/E PARAMETER SYMBOL CONDITIONS MIN TYP MAXIMIN TYP MAX UNITS SWITCH Anaiog-Signal Range VANALOG TMIN to TMAX +15 18 Vv Vin = 0.8V (MAX326), | Ta = +25C 15 25 15 35 Drain-Source On Resistance | rps(oN) | Vin = 2.4V (MAX327), kg Vp = 10V, Ig = 100uA| "MIN to TMAX 2.2 4 1.9 5 On-Resistance Match Ta = +25C 5 5 % VIN = 2.4V (MAX326), | Ta = +25C 0.1 10 Q1 +10] pA Vin = 0.8V (MAX327), - Source-Off Leakage Current Ig OFF) Vs = 14V, Vp =-14V | TMIN tO TAX 45 +5 nA (Note 3) VIN = 2.4V (MAX326), | Ta = +25C 02 10 02 #10| pA VIN = 0.8V (MAX327), Vg = 14V, Vp = 14V TMIN to TMAX 25 25 nA Vin = 2.4V (MAX326), | Ta = 425C 01 +10 0.1 210] pA Vin = 0.8V (MAX327}, Orain-Off Leakage Current | lXOFF) Vg = 14V, Vp =-14V | TMIN to Tax #6 25 nA (Note 3) VIN = 2.4V (MAX926), | Ta = +25C 02 +10 0.2 +20] pA Vin = 0.8V (MAX327), Vs = 14V, Vo = 14V TMIN to TMAX 25 26 nA Vin = 0.8V (MAX326), | Ta = 425C 1 +10 1 +10 pA Vin = 2.4V (MAX327), Drain-On Leakage Current Ixon Vs = Vo = 14V TmIN to TMAX #10 F #10 | nA (Note 3) O(ON) Vin = 0.8V (MAX326), | Ta = +25C 2 x10 2 +10] pA Vin = 2.4V (MAX327), Vs = Vo = -14V TMIN to TMAX 10 +10 | nA INPUT Input Current with , VIN = 2.4V Tmin to Tax] -1 -0.0004 -1 -0.0004 uA Input Voltage High INH [Vin = 15V TIN to TMAX 6.0031 0.0031 Input Current with _ T 4 4 1 -0.0004 Input Voltage Low HNL Vin = OV Tan (0 TAX 0.0004 WA 2 MAAXIAAQuad, SPST, Ultra-Low Leakage, CMOS Analog Switches ELECTRICAL CHARACTERISTICS (continued) (V+ = 15V, V- = -15V, Ta = +25C, unless otherwise noted.) MAX32_M MAX32_C/E ep ETE BOL ARAMETER SYMBO CONDITIONS MIN TYP MAXIMIN TYP MAX UNITS SUPPLY Positive Supply Current b+ VIN = OV or 5V on all inputs 0.09 0.25 0.09 0.25 mA Negative Supply Current \- VIN = OV or SV on all inputs -0.1 -0.00001 -0.1 -0.00001 mA Power-Supply Range for Continuous Operation (Note 4) +45 +18 [24.5 +18 DYNAMIC Ont Vg = 2V, Ru = 1kQ, Turn-On Time ton CL = 35pF (Figure 1) 500 1000 00 1000 ns ont: Vg = 2V, At = 1kQ, Turn-Oft Time torr CL = 35pF (Figure 1) 50 s00 50 =. 00 ns Charge Injection (Note 5) Q Cy = 0.01puF, Vaen = OV, Reen = 082 2 5 2 5 pc Off isolation Vin = 5V, AL =1kQ, CL = 15pF, (Note 4) OIRR | Vs = 1Vams, f = 100kHz 70 70 08 . Vin = 5V, Re =1kQ, Cy = 15pF, Crosstalk (Channel-ta-Channel)| CCAR Vg = 1VaMs. f = 100kHz 90 90 cB Source-Off Capacitance Cs(orF) | Vs = OV, Vin = SV, f = MHz 1.7 17 pF Orain-Off Capacitance Cocorr) | Vs = OV. Vin = SV, f = 1MHz 7 1.7 pF Channel-On Capacitance CoN) + Vo = Vs = OV, VIN = OV, f = 1MHz 6 6 pF Note 3: All !eakage parameters are 100% tested at maximum rated operating temperatures, i.e. +70C, +85C, or +125C, and guaranteed by correlation at +25C. Note 4: Electrical characteristics, such as rps(on). will change when power supplies other than +15V are used. Power-supply range is a design characteristic, not production tested. Note 5: Guaranteed by design. +15V | V+ LOGIC" WNeUT INT 3V SWITCH SWITCH sot < INPUT gy D1 OUTPUT t 20ns Vgs+2V 7 lg Vo te 2008 | SWITCH Nt INPUT YS RS > Sor 0.9 Vo 0.9 Vo LOGIC 1k | p i INPUT SWITCH ov UTPUT Vi . OUTPUT ton | OFF GND] v- | 1 = ov -fov Vo=Vs Re + FDS(ON) NOTE: LOGIC SHOWN FOR MAX326; INVERT FOR MAX327 (REPEAT TEST FOR IN2, IN3 AND IN4) Figure 1. Switching-Time Test Circuit. Switch-output waveform shown for Vs = constant with logic-input waveform as shown. Note. Vs may be posilive or negative as per switching-time test circuit. Vo is the steady-state output with switch on. Feedthrough via gate capacitance may result in spikes at leading and trailing edge of output waveform. MMAKIAN LEEXVW/SCEXVAMAX326/MAX327 Quad, SPST, Ultra-Low Leakage, CMOS Analog Switches LEAKAGE (nA) FosiON) (w42) t vs. ANALOG INPUT oon DUAL SUPPLIES 9 8F Ta= 425C ? : +5V SUPPLIES 5 4 3 2 1 a 15 10 5 OO 5 0 15 ANALOG INPUT (V} Is(orF) vs. TEMPERATURE 10 Ves 15V Ves -I5V | | 1op+ { Pod | poof oe | | 1 901 + + | 0001 | ' Away | MAX327 55-36-15 5 25 45 65 85 105 125 TEMPERATURE (C) LEAKAGE (nA) (DS(ON) (k&2) Typical Operating Characteristics if vs. ANALOG INPUT FOR SINGLE SUPPLY 5 T T Ta = +25C +15V SUPPLY T LOAN LAN ANALOG INPUT ()} InxON), lDCOFF) vs. TEMPERATURE +00 V+ = 15V P | Ve = -15V 10 ; 7 /\ 1 001 MAX326 0.001 | 55-35 -18 5 25 45 66 85 105 125 TEMPERATURE (C) MAXLANQuad, SPST, Ultra-Low Leakage, Application Hints The MAX326/MAX327 are pin-compatible upgrades for the DG201A/DG202 and 0G211/DG212. The MAX326/MAX327 feature significantly lower leakages (at least 100 times less at +25C), but with higher on resis- tance. Low leakage minimizes signal error in most ap- plications that require signa! switching into high-impedance inputs of A/Ds or op amps. Switching times are virtually identical, as shown in Table 1. Table 1. Switching Speeds with Various Power-Supply Combinations | POWER SUPPLY (V) ton (us) tOFF (ns) +15 05 50 +10 1 80 +5 25 200 +10 25 200 +15 15 100 The MAX326/MAX327 work well in single-supply applica- tions from +10V to +30V. For these applications, V- should be connected to ground, and signal levels equal to the rail can be switched. +5V to +18V dual supplies can also be used to increase design flexibility. Channel-to-channel on-resistance matching is typically better than 95% for a given analog input level. Typical Operating Characteristics show how (DS(ON) changes with various analog inputs and power-supply combina- tions. While specified at TTL threshold levels, the logic threshold is roughly 1.5V +0.2V and switches properly with CMOS input levels from -15V to +15V. Logic input levels should never be allowed to exceed the supply rails. Protecting Against Fault Conditions Fault conditions develop when power supplies are turned off with input signals still present, or when overvoltages occur at the inputs during normal operation. In either case, source-to-body diodes can be forward biased to conduct current from the signal source. If low current levels are required, the addition of external protection diodes is recommended (Figure 2). PALAXIUMA CMOS Analog Switches To provide protection for overvoltages up to 20V above the supply rails, a 1N4001 or 1N914 diode should be piaced in series with the positive and negative supplies (Figure 2). The addition of these diodes will reduce the analog signal range to 1V below the positive supply and 1V above the negative supply. For signals that can be momentarily shorted to the 110VAC line, the addition of a 47kQ, 1/2W resistor in series with the channel input is recommended. This will protect the switch and allow normal operation to continue once the fault condition abates. The throughput resis- tance will then be 47kQ plus roS(ON), but low switch leakage will reduce the error while maintaining superior system reliability. | Gi Gi [3] AAaraan ra] 14001 = MAX326 1N4001 -1sy @{4] MAx327 [13 15 [5 g | (a ia (2 Ho] [3] [9] Figure 2. Protection Against Fault Conaitions + Va od IN OntO OUT AAAXLAA 4 MAX326 +VIN MAX327 Figure 3. On Resistance vs. Analog-Signal Level Supply Voltage LEEXVW/SCEXVMMAX326/MAX327 Quad, SPST, Ultra-Low Leakage, CMOS Analog Switches aL ais ES s {ocony | i i 1 i i IN OUT PAMDAAA rth MAX326 MAX327 Figure 4. On Leakage Current Test Circuit _Ordering information (continued) PART TEMP, RANGE PIN-PACKAGE MAX327CPE OC to +70C 16 Plastic DIP MAX327CEE 0C to +70C 16 QSOP MAX327CSE 0C to +70C 16 Narrow SO MAX327CJE OC to +70C 16 CERDIP** MAX327C/D OC to +70C Dice* MAX327EPE -40C to +85C 16 Plastic DIP MAX327EEE -40C to +85C 16 QSOP MAX327ESE -40C to +85C 16 Narrow SO MAX327EJE -40C to +85C 16 CERDIP* MAX327MJE -55C to +125C 16 CERDIP* Contact factory for dice specifications. Substrate may be allowed to float or be tied to V+. Contact factory for availability. IS(OFF) IQ(OFF, IN ouT MOG Hh i MAXG2G | MAX327 iL sty HV a L L Figure 5. Off Leakage Current Test Circuit Chip Topography ( SUBSTRATE CONNECTED TO V+ PAAXLIAQuad, SPST, Ultra-Low Leakage, CMOS Analog Switches Package Information INCHES MILLIMETERS a __ pe} E O1M | aan [ Max | MIN | MAX fy ___---__-| <* Ei A - 0.200 = 5.08 t A1 | 0.015 - 0.38 = h A A3 A2 | 0.125 | 0.175 | 318 | 4.45 mo a A2 (- 1 A3 | 0.055 | 0.080 | 1.40 | 203 ia 8 | 0.016 | 0.022 | 0.41 | 0.56 i Bi | 0.045 | 0.065 | 1.14 | 1.65 C {0.008 | 0.012 | 0.20 | 0.90 At : sam 4 0.005 | 0.080 | 0.13 | 203 Yee O = 15) ; 0.300 | 0.925 | 7.62 | 8.26 c> 1 | 0.240 | 0.310 | 610 | 7.87 e B1 << oA @ | 0.100 - 2.54 = B eA | 0.300 - 7.62 = eB el - |[o4o0 | - | 10.16 | [01 c [0.115 | 0.150] 292 | 3.91 Plastic DIP pim [pingi INCHES __|MALLIMETERS MIN | MAX | MIN | MAX PLASTIC D | 8 [0.348 [0.300 | 8.84 | 9.91 DUAL-IN-LINE D | 14 [0.738 | 0.765 | 18.67 | 19.43 D | 16 (0.745 | 0.765 | 18.92 | 19.43 PACKAGE D | te [0.885 | 0.915 | 22.49 | 23.24 STF OOo (0.300 in.) BD 20 | 1.015 | 1.045 | 25.78 | 26.54 DO | 24 | 1.14 | 1.265 | 28.96 | 32.13 pi |_INGHES MILLIMETERS MIN | MAX | MIN | MAX A | 0.053 | 0.089 | 1.05 | 1.75 o> } Al | 0.004 | 0.010 | 0.10 | 0.25 ya B | G01 | 0.019 | 0.95 | 0.49 o i { A ors" fc [0.007 | 0.010 | 019 | 025 / BE | 0.150 | 0.157 | 380 | 4.00 a 6 0.050 1.27 |e | i t H | 0.228 | 0.244 5.80 6.20 B c L~ L_| oor | 0.050 | 040 | 1.27 ojO/o z INCHES (MILLIMETERS | SO PINS | iain | MAX |_MIN | MAX it SMALL OUTLINE @ [09.189 10.197 | 4.80 | 5.00 PACKAGE 14 | 0.037 10.044 | 6.55 | 8.75 76 [0.986 [0.394 | 9.80 | 10.00 4 | (0.150 in.) [1099 PRAXISA 7 LEEXVW/9CEXVNMAX326/MAX327 Quad, SPST, Ultra-Low Leakage, CMOS Analog Switches Package Information (continued) pas INCHES MILLIMETERS MIN | MAX | MIN | MAX ei A | - | 0200] - | 5.06 B | 0.014 [ 0.023 | 0.36 | 0.58 <4 E-}| A 0_ 81 | 0.038 [ 0.065 | 0.97 | 1.65 [ TT Cc [0.008 | 0.015 | G20 | 6.38 iz E | 0.220 [ 0.310 | 559 | 7.87 1 ' L | &1 [ 0.290 [ 0.320 | 7.37 | 38.19 I j 8 0.100 2.54 a 0-15 N L 0.125 0.200 3.18 5.08 y 2 ele i ui | 0150) 3.81 = L uy a Q | 0.015 | 0.070 | 038 | 1.76 B1 s| - [| oow] - 2.49 8 81 | 0.005 - 0.13 = ee st ~~ a s pim (Pins/_NCHES _ | MILLIMETERS CERDIP MIN | MAX | MIN | MAX dD | 8] - jo40s| ~ j|1029 CERAMIC DUAL-IN-LINE D 14 - 0.785 - 19.94 PACKAGE o{16{ - |osso[ ~- [21.34 ; o [18 [ - foseo[ - [2438 (0.300 in.) dD [20/ - |[1.060/ - [26.92 D [24] - [1280{ - [3251 21-0045A INCHES MILLIMETERS INCHES (MILLIMETERS DIM an | Max_{ min | max | [CM (PINS lig] wax | MIN | MAX A | 0.061 | 0.068 | 1.55 | 1.73 bo | 16 [0.189 | 0.198 | 4.80 | 4.98 ~+ 0D _ | t Al | 0,004 | 0.0098} 0.127 | 0.25 Ss | 16 |0.0020]0.0070[ 0.05 | 0.18 1 Az | 0.055 [| 0.061 | 1.40 | 1.55 D | 20 [0.337 [0.344] a.56 | 8,74 ( \ A B | 0.008 | 0.012 | 020 | 0.31 S | 20 [0.0500/0.0550| 1.27 [ 1.40 al Y CG {0.0075 | 0.0098 | 0.19 | 0.25 o | 24 [0.337 | 0.944 | 8.56 | 8.74 . A j D SEE VARIATIONS Ss | 24 |0.0280}0.0300] 0.64 | 0.76 lela elie e | 0.150 | 0.157 | 3.a1 |] 3.99 | 28 | 0.386 | 0.393] 9.80 | 9.98 B 0.25 BSC 0.635 BSG | 28 [o.ce50/0.0300] 0.64 | 0.76 H | 0.230 | 0.244 5.84 6.20 21-00455A $\<- h | 0.010 | oo18 [| 025 | 0.41 = t [oo16 | 0035 [| o41 | 089 N SEE VARIATIONS s SEE VARIATIONS f alo | s | o | & ay has asop x yop Bhat QUARTER @ A2 \ SMALL-OUTLINE N PACKAGE pea} c cow 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 nght to change the circuitry and specifications without notice at any time. 8 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 @ 1996 Maxim Integrated Products Printed USA AAAXLAA is a registered trademark of Maxim Integrated Products.