Data Sheet High Temperature, High Voltage, Latch-Up Proof, 8-Channel Multiplexer FEATURES Extreme high temperature operation up to 2 C Latch-up proof JESD78D Class II rating Low leakage Ultralow capacitance and charge injection Source capacitance, off: 2.9 pf at ±5 V dual supply Drain capacitance, off: 34 pf at ±5 V dual supply Charge injection:.2 pc at ±5 V dual supply and +2 V single supply Low on resistance: 29 Ω typical for dual supply at 2 C ±9 V to ±22 V dual-supply operation 9 V to 4 V single-supply operation 48 V supply maximum rating Fully specified at ±5 V, ±2 V, +2 V, and +36 V VSS to VDD analog signal range APPLICATIONS Downhole drilling and instrumentation Avionics Heavy industrial High temperature environments GENERAL DESCRIPTION The is a latch-up proof, monolithic, complementary metal-oxide semiconductor (CMOS) analog multiplexer designed for operation up to 2 C. The switches one of eight inputs to a common output, as determined by the 3-bit binary address lines, A, A, and A2. An EN input enables or disables the device. When EN is disabled, all channels switch off. The ultralow capacitance and charge injection of this switch makes it an ideal solution for data acquisition and sample-and-hold applications, where low glitch and fast settling are required. The switch conducts equally well in both directions when on, and it has an input signal range that extends to the power supplies. In the off condition, signal levels up to the supplies are blocked. This multiplexer is available in a 6-lead ceramic flat package (FLATPACK) and a 6-lead ceramic flat package with reverse formed gullwing leads (FLATPACK_RF). Both packages are designed for robustness at extreme temperatures and are qualified for up to hours of operation at the maximum temperature rating. The is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection table of available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp. Rev. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. FUNCTIONAL BLOCK DIAGRAM S S8 -OF-8 DECODER A A A2 EN Figure. PRODUCT HIGHLIGHTS. Trench Isolation Guards Against Latch-Up and Minimizes Parasitic Leakage. A dielectric trench separates the P channel and N channel transistors to prevent latch-up even under severe overvoltage conditions. 2. Achieved JESD78D Class II rating. The was stressed to ±5 ma with a ms pulse at the maximum temperature of the device (2 C). 3..2 pc Charge Injection. 4. Dual-Supply Operation. For applications where the analog signal is bipolar, the can operate from dual supplies of up to ±22 V. 5. Single-Supply Operation. For applications where the analog signal is unipolar, the can operate from a single rail power supply of up to 4 V. 6. 3 V Logic-Compatible Digital Inputs. VINH = 2. V, VINL =.8 V. 7. No Logic Power Supply (VL) Required. One Technology Way, P.O. Box 96, Norwood, MA 262-96, U.S.A. Tel: 78.329.47 26 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com D 4872-
TABLE OF CONTENTS Features... Applications... General Description... Functional Block Diagram... Product Highlights... Revision History... 2 Specifications... 3 ±5 V Dual-Supply... 3 ±2 V Dual Supply... 4 2 V Single Supply... 5 36 V Single Supply... 6 Continuous Current per Channel (Sx or D)... 6 Absolute Maximum Ratings... 7 Data Sheet Thermal Resistance...7 ESD Caution...7 Pin Configurations and Function Descriptions...8 Typical Performance Characteristics...9 Test Circuits... 4 Terminology... 6 Theory of Operation... 7 Trench Isolation... 7 Applications Information... 8 Outline Dimensions... 9 Ordering Guide... 2 REVISION HISTORY 9/26 Revision : Initial Version Rev. Page 2 of 2
Data Sheet SPECIFICATIONS ±5 V DUAL-SUPPLY VDD = +5 V ± %, VSS = 5 V ± %, GND = V, and 55 C TA +2 C, unless otherwise noted. Table. Parameter Symbol Test Conditions/Comments Min Typ 2 Max Unit ANALOG SWITCH Analog Signal Range VSS VDD V On Resistance RON Supply voltage (VS) = ± V, drain source 29 4 Ω current (IDS) = ma, see Figure 3; for maximum RON, VDD = +3.5 V, VSS = 3.5 V On-Resistance Match Between Channels ΔRON VS = ± V, IDS = ma 2. Ω On-Resistance Flatness RFLAT (ON) VS = ± V, IDS = ma 6 3 Ω LEAKAGE CURRENTS VDD = +6.5 V, VSS = 6.5 V Source Off Leakage IS (off ) VS = ± V, VD = V, see Figure 32 8 ±.5 +8 na Drain Off Leakage ID (off ) VS = ± V, VD = V, see Figure 32 6 ±.5 +6 na Channel On Leakage ID (on), IS (on) VS = VD = ± V, see Figure 3 7 ±. +7 na DIGITAL INPUTS Input High Voltage VINH 2. V Input Low Voltage VINL.8 V Input Current IINL or IINH Input voltage (VIN) = ground voltage (VGND) or VDD. +.2 +. µa Digital Input Capacitance CIN 3 pf DYNAMIC CHARACTERISTICS 3 Transition Time ttransition Load resistance (RL) = 3 Ω, load capacitance 5 335 ns (CL) = 35 pf, VS = V, see Figure 36 On Time ton (EN) RL = 3 Ω, CL = 35 pf, VS = V, see Figure 38 25 275 ns Off Time toff (EN) RL = 3 Ω, CL = 35 pf, VS = V, see Figure 38 6 275 ns Break-Before-Make Time Delay td RL = 3 Ω, CL = 35 pf, S voltage (VS) = 25 55 ns S2 voltage (VS2) = V, see Figure 37 Charge Injection QINJ VS = V, RS = Ω, CL = nf, see Figure 39.2 pc Off Isolation RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 34 86 db Channel to Channel Crosstalk RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 33 8 db 3 db Bandwidth RL = 5 Ω, CL = 5 pf, see Figure 35 MHz Source Capacitance, Off CS (off ) VS = V, frequency (f ) = MHz 2.9 pf Drain Capacitance, Off CD (off ) VS = V, f = MHz 34 pf Source/Drain Capacitance, On CD (on), CS VS = V, f = MHz 37 pf (on) POWER REQUIREMENTS VDD = +6.5 V, VSS = 6.5 V Supply Current Positive IDD Digital inputs = V or 5 V, see Figure 28 6 8 µa Negative ISS Digital inputs = V or 5 V, see Figure 29 2 µa Ground Current IGND Digital inputs = V or 5 V 6 8 µa Supply Range VDD/VSS GND = V ±9 ±22 V See the Terminology section. 2 TA = 25 C, except for the analog switch and power requirements values, where TA = 2 C. 3 Guaranteed by design, not subject to production test. Rev. Page 3 of 2
Data Sheet ±2 V DUAL SUPPLY VDD = +2 V ± %, VSS = 2 V ± %, GND = V, and 55 C TA +2 C, unless otherwise noted. Table 2. Parameter Symbol Test Conditions/Comments Min Typ 2 Max Unit ANALOG SWITCH Analog Signal Range VSS VDD V On Resistance RON VS = ±5 V, IDS = ma, see Figure 3; 24 35 Ω for maximum RON, VDD = +8 V, VSS = 8 V On-Resistance Match Between Channels ΔRON VS = ±5 V, IDS = ma.5 Ω On-Resistance Flatness RFLAT (ON) VS = ±5 V, IDS = ma 55 Ω LEAKAGE CURRENTS VDD = +22 V, VSS = 22 V Source Off Leakage IS (off ) VS = ±5 V, VD = 5 V, see Figure 32 8 ±.5 +8 na Drain Off Leakage ID (off ) VS = ±5 V, VD = 5 V, see Figure 32 6 ±.5 +6 na Channel On Leakage ID (on), IS (on) VS = VD = ±5 V, see Figure 3 7 ±. +7 na DIGITAL INPUTS Input High Voltage VINH 2. V Input Low Voltage VINL.8 V Input Current IINL or IINH VIN = VGND or VDD. +.2 +. µa Digital Input Capacitance CIN 3 pf DYNAMIC CHARACTERISTICS 3 Transition Time ttransition RL = 3 Ω, CL = 35 pf, VS = V, see Figure 36 4 35 ns On Time ton (EN) RL = 3 Ω, CL = 35 pf, VS = V, see Figure 38 2 245 ns Off Time toff (EN) RL = 3 Ω, CL = 35 pf, VS = V, see Figure 38 6 26 ns Break-Before-Make Time Delay td RL = 3 Ω, CL = 35 pf, VS = VS2 = V, 2 45 ns see Figure 37 Charge Injection QINJ VS = V, RS = Ω, CL = nf, see Figure 39.4 pc Off Isolation RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 34 86 db Channel to Channel Crosstalk RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 33 8 db 3 db Bandwidth RL = 5 Ω, CL = 5 pf, see Figure 35 2 MHz Source Capacitance, Off CS (off ) VS = V, f = MHz 2.8 pf Drain Capacitance, Off CD (off ) VS = V, f = MHz 33 pf Source/Drain Capacitance, On CD (on), CS (on) VS = V, f = MHz 36 pf POWER REQUIREMENTS VDD = +22 V, VSS = 22 V Supply Current Positive IDD Digital inputs = V or 5 V, see Figure 28 6 2 µa Negative ISS Digital inputs = V or 5 V, see Figure 29 2 µa Ground Current IGND Digital inputs = V or 5 V 6 2 µa Supply Range VDD/VSS GND = V ±9 ±22 V See the Terminology section. 2 TA = 25 C, except for the analog switch and power requirements values, where TA = 2 C. 3 Guaranteed by design, not subject to production test. Rev. Page 4 of 2
Data Sheet 2 V SINGLE SUPPLY VDD = 2 V ± %, VSS = V, GND = V, and 55 C TA +2 C, unless otherwise noted. Table 3. Parameter Symbol Test Conditions/Comments Min Typ 2 Max Unit ANALOG SWITCH Analog Signal Range VSS VDD V On Resistance RON VS = V to V, IDS = ma, see Figure 3; 65 8 Ω for maximum RON, VDD =.8 V, VSS = V On-Resistance Match Between Channels ΔRON VS = V to V, IDS = ma 3 24 Ω On-Resistance Flatness RFLAT (ON) VS = V to V, IDS = ma 24 38 Ω LEAKAGE CURRENTS VDD = 3.2 V, VSS = V Source Off Leakage IS (off ) VS = V/ V, VD = V/ V, see Figure 32 8 ±.5 +8 na Drain Off Leakage ID (off ) VS = V/ V, VD = V/ V, see Figure 32 6 ±.5 +6 na Channel On Leakage ID (on), IS (on) VS = VD = V/ V, see Figure 3 7 ±. +7 na DIGITAL INPUTS Input High Voltage VINH 2. V Input Low Voltage VINL.8 V Input Current IINL or IINH VIN = VGND or VDD. +.2 +. µa Digital Input Capacitance CIN 3 pf DYNAMIC CHARACTERISTICS 3 Transition Time ttransition RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 36 2 49 ns On Time ton (EN) RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 38 8 435 ns Off Time toff (EN) RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 38 65 35 ns Break-Before-Make Time Delay td RL = 3 Ω, CL = 35 pf, VS = VS2 = 8 V, 4 95 ns see Figure 37 Charge Injection QINJ VS = 6 V, RS = Ω, CL = nf, see Figure 39.2 pc Off Isolation RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 34 86 db Channel to Channel Crosstalk RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 33 8 db 3 db Bandwidth RL = 5 Ω, CL = 5 pf, see Figure 35 95 MHz Source Capacitance, Off CS (off ) VS = 6 V, f = MHz 3.3 pf Drain Capacitance, Off CD (off ) VS = 6 V, f = MHz 38 pf Source/Drain Capacitance, On CD (on), CS (on) VS = 6 V, f = MHz 4 pf POWER REQUIREMENTS VDD = 3.2 V Supply Current Positive IDD Digital inputs = V or 5 V, see Figure 28 5 75 µa Negative ISS Digital inputs = V or 5 V, see Figure 29 7.5 5 µa Ground Current IGND Digital inputs = V or 5 V 5 75 µa Supply Range VDD/VSS GND = V, VSS = V 9 4 V See the Terminology section. 2 TA = 25 C, except for the analog switch and power requirements values, where TA = 2 C. 3 Guaranteed by design, not subject to production test. Rev. Page 5 of 2
Data Sheet 36 V SINGLE SUPPLY VDD = 36 V ± %, VSS = V, GND = V, and 55 C TA +2 C, unless otherwise noted. Table 4. Parameter Symbol Test Conditions/ Comments Min Typ 2 Max Unit ANALOG SWITCH Analog Signal Range VSS VDD V On Resistance RON VS = V to 3 V, IDS = ma, see Figure 3; 26 35 Ω for maximum RON, VDD = 32.4 V, VSS = V On-Resistance Match Between Channels ΔRON VS = V to 3 V, IDS = ma.5 Ω On-Resistance Flatness RFLAT (ON) VS = V to 3 V, IDS = ma 55 Ω LEAKAGE CURRENTS VDD = 3.2 V, VSS = V Source Off Leakage IS (off ) VS = V/ V, VD = V/ V, see Figure 32 8 ±.5 +8 na Drain Off Leakage ID (off ) VS = V/ V, VD = V/ V, see Figure 32 6 ±.5 +6 na Channel On Leakage ID (on), IS (on) VS = VD = V/ V, see Figure 3 7 ±. +7 na DIGITAL INPUTS Input High Voltage VINH 2. V Input Low Voltage VINL.8 V Input Current IINL or IINH VIN = VGND or VDD. +.2 +. µa Digital Input Capacitance CIN 3 pf DYNAMIC CHARACTERISTICS 3 Transition Time ttransition RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 36 7 32 ns On Time ton (EN) RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 38 5 265 ns Off Time toff (EN) RL = 3 Ω, CL = 35 pf, VS = 8 V, see Figure 38 8 265 ns Break-Before-Make Time Delay td RL = 3 Ω, CL = 35 pf, VS = VS2 = 8 V, 2 55 ns see Figure 37 Charge Injection QINJ VS = 6 V, RS = Ω, CL = nf, see Figure 39.3 pc Off Isolation RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 34 86 db Channel to Channel Crosstalk RL = 5 Ω, CL = 5 pf, f = MHz, see Figure 33 8 db 3 db Bandwidth RL = 5 Ω, CL = 5 pf, see Figure 35 5 MHz Source Capacitance, Off CS (off ) VS = 6 V, f = MHz 2.7 pf Drain Capacitance, Off CD (off ) VS = 6 V, f = MHz 32 pf Source/Drain Capacitance, On CD (on), CS (on) VS = 6 V, f = MHz 35 pf POWER REQUIREMENTS VDD = 3.2 V Supply Current Positive IDD Digital inputs = V or 5 V, see Figure 28 8 55 µa Negative ISS Digital inputs = V or 5 V, see Figure 29 2 µa Ground Current IGND Digital inputs = V or 5 V 8 55 µa Supply Range VDD/VSS GND = V, VSS = V 9 4 V See the Terminology section. 2 TA = 25 C, except for the analog switch and power requirements values, where TA = 2 C. 3 Guaranteed by design, not subject to production test. CONTINUOUS CURRENT PER CHANNEL (Sx OR D) Table 5. Parameter Test Conditions/Comments 75 C 2 C Unit CONTINUOUS CURRENT (Sx OR D) θja = 7 C/W VDD = +5 V, VSS = 5 V ma maximum VDD = +2 V, VSS = 2 V ma maximum VDD = 2 V, VSS = V 6 6 ma maximum VDD = 36 V, VSS = V ma maximum Rev. Page 6 of 2
Data Sheet ABSOLUTE MAXIMUM RATINGS TA = 25 C, unless otherwise noted. Table 6. Parameter VDD to VSS VDD to GND VSS to GND Analog Inputs Rating 48 V.3 V to +48 V +.3 V to 48 V VSS.3 V to VDD +.3 V or 3 ma, whichever occurs first Digital Inputs VSS.3 V to VDD +.3 V or 3 ma, whichever occurs first Peak Current, Sx or D Pins 3 ma (pulsed at ms, % duty cycle maximum) Continuous Current, Sx or D Pins 2 Data + 5% Temperature Range 55 C to +2 C Junction Temperature 22 C Reflow Soldering Peak Temperature, 26 C (+ C/ 5 C) Pb Free THERMAL RESISTANCE Thermal performance is directly linked to printed circuit board (PCB) design and operating environment. Careful attention to PCB thermal design is required. Table 7. Thermal Resistance Package Type θja θjc Unit F-6-7 22 C/W FR-6-7 C/W Thermal impedance simulated values are based on JEDEC 2s2p thermal test board. See JEDEC JESD5. ESD CAUTION Overvoltages at the Ax, EN, Sx, or D pins are clamped by internal diodes. Limit the current to the maximum ratings given. 2 See Table 5. Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Only one absolute maximum rating can be applied at any one time. Rev. Page 7 of 2
Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS A EN 2 3 6 A 5 A2 4 GND S 4 3 S2 5 TOP VIEW 2 (Not to Scale) S5 S3 6 S6 S4 7 S7 D 8 9 S8 Figure 2. FLATPACK Pin Configuration 4872-2 A 6 A2 5 GND 4 3 S5 2 S6 S7 S8 9 TOP VIEW (Not to Scale) A 2 EN 3 4 S 5 S2 6 S3 7 S4 8 D Figure 3. Reversed Formed FLATPACK Pin Configuration 4872-3 Table 8. Pin Function Descriptions Pin No. Mnemonic Description A Logic Control Input. 2 EN Active High Digital Input. When low, the device is disabled and all switches are off. When high, the Ax logic inputs determine the on switches. 3 VSS Most Negative Power Supply Potential. In single-supply applications, this pin can be connected to ground. 4 S Source Terminal. This pin can be an input or an output. 5 S2 Source Terminal 2. This pin can be an input or an output. 6 S3 Source Terminal 3. This pin can be an input or an output. 7 S4 Source Terminal 4. This pin can be an input or an output. 8 D Drain Terminal. This pin can be an input or an output. 9 S8 Source Terminal 8. This pin can be an input or an output. S7 Source Terminal 7. This pin can be an input or an output. S6 Source Terminal 6. This pin can be an input or an output. 2 S5 Source Terminal 5. This pin can be an input or an output. 3 VDD Most Positive Power Supply Potential. 4 GND Ground ( V) Reference. 5 A2 Logic Control Input 2. 6 A Logic Control Input. Table 9. Truth Table A2 A A EN On Switch X X X None S S2 S3 S4 S5 S6 S7 S8 X is don t care. Rev. Page 8 of 2
Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 6 4 6 4 = 32.4V = V 2 = +8V = 8V 2 ON RESISTANCE (Ω) 8 6 4 = +2V = 2V = +22V = 22V ON RESISTANCE (Ω) 8 6 4 = 36V = V = 39.6V = V 2 2 25 2 5 5 5 5 2 25 V S, V D (V) Figure 4. On Resistance (RON) as a Function of VS, VD (±2 V Dual Supply) 4872-6.6 3.2 4.8 6.4 8. 9.6.2 2.8 4.4 6. 7.6 9.2 2.8 22.4 24. 25.6 27.2 28.8 3.4 32. 33.6 35.2 36.8 38.4 4. V S, V D (V) Figure 7. On Resistance (RON) as a Function of VS, VD (36 V Single Supply) 4872-9 ON RESISTANCE (Ω) 25 2 5 5 = +6.5V = 6.5V = +5V = 5V = +9V = 9V = +3.5V = 3.5V ON RESISTANCE (Ω) 35 3 25 2 5 5 = +5V = 5V +2 C +75 C +25 C +85 C +25 C 4 C 55 C 2 5 5 5 5 2 V S, V D (V) Figure 5. On Resistance (RON) as a Function of VS, VD (±5 V Dual Supply) 4872-7 5 2 9 6 3 3 6 9 2 5 V S, V D (V) Figure 8. On Resistance (RON) as a Function of VS, VD for Various Temperatures, ±5 V Dual Supply 4872-8 ON RESISTANCE (Ω) 45 4 35 3 25 2 5 = 2V = V = 9V = V =.8V = V = 3.2V = V ON RESISTANCE (Ω) 3 25 2 5 = +2V = 2V +2 C +75 C +25 C +85 C +25 C 4 C 55 C 5 5.6.2.8 2.4 3. 3.6 4.2 4.8 5.4 6. 6.6 7.2 7.8 8.4 9. 9.6.2.8.4 2. 2.6 3.2 V S, V D (V) Figure 6. On Resistance (RON) as a Function of VS, VD (2 V Single Supply) 4872-8 2 5 5 5 5 2 V S, V D (V) Figure 9. On Resistance (RON) as a Function of VS, VD for Various Temperatures, ±2 V Dual Supply 4872-9 Rev. Page 9 of 2
Data Sheet ON RESISTANCE (Ω) ON RESISTANCE (Ω) 7 6 5 4 3 2 = 2V = V 2 4 6 8 2 V S, V D (V) +2 C +75 C +25 C +85 C +25 C 4 C 55 C Figure. On Resistance (RON) as a Function of VS, VD for Various Temperatures, 2 V Single Supply 3 25 2 5 5 = 36V = V +2 C +75 C +25 C +85 C +25 C 4 C 55 C 4 8 2 6 2 V S, V D (V) 24 28 32 36 Figure. On Resistance (RON) as a Function of VS, VD for Various Temperatures, 36 V Single Supply 4872-4872- LEAKAGE CURRENT (na) LEAKAGE CURRENT (na) 2 = +2V = 2V V BIAS = +5V, 5V 3 I S (OFF) + I D (OFF) + 4 I S (OFF) + I D (OFF) + I S, I D (ON) + + I S, I D (ON) 5 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 3. Leakage Current vs. Temperature, ±2 V Dual Supply 5 5 5 2 25 I S (OFF) + I D (OFF) + I S (OFF) + 3 I D (OFF) + = 2V I S, ID (ON) + + = V I S, ID (ON) V BIAS = V, V 35 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 4. Leakage Current vs. Temperature, 2 V Single Supply 4872-4 4872-5 5 = +5V = 5V V BIAS = +V, V 5 5 LEAKAGE CURRENT (na) 5 5 I S (OFF) + I D (OFF) + 2 I S (OFF) + I D (OFF) + I S, I D (ON) + + I S, I D (ON) 25 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 2. Leakage Currents vs. Temperature, ±5 V Dual Supply 4872-3 LEAKAGE CURRENT (na) 5 2 25 3 I S (OFF) + I D (OFF) + 35 I S (OFF) + 4 = 36V I D (OFF) + = V I S, I D (ON) + + V BIAS = V, 3V I S, I D (ON) 45 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 5. Leakage Current vs. Temperature, 36 V Single Supply 4872-22 Rev. Page of 2
Data Sheet 2 = +5V = 5V 5 6 = +5V = 5V OFF ISOLATION (db) 4 6 8 ATTENUATION (db) 7 8 9 2 4 k k M M M G FREQUENCY (Hz) Figure 6. Off Isolation vs. Frequency, ±5 V Dual Supply 4872-8 2 k M M M G FREQUENCY (Hz) Figure 9. Attenuation vs. Frequency, ±5 V Dual Supply 4872-22 2 = +5V = 5V 2 = +5V = 5V CROSSTALK (db) 4 6 8 2 BETWEEN S AND S2 BETWEEN S AND S8 ACPSRR (db) 4 6 8 NO DECOUPLING CAPACITORS DECOUPLING CAPACITORS 4 k k M M M G FREQUENCY (Hz) 4872-9 2 k k k M FREQUENCY (Hz) M 4872-2 Figure 7. Crosstalk vs. Frequency, ±5 V Dual Supply Figure 2. ACPSRR vs. Frequency, ±5 V Dual Supply 4 35 DEMUX (DRAIN TO SOURCE) 5 4 MUX (SOURCE TO DRAIN) CHARGE INJECTION (pc) 3 25 2 5 5 = +2V = 2V = +5V = 5V = +2V = V = +36V = V CHARGE INJECTION (pc) 3 2 = +2V = 2V = +2V = V = +5V = 5V = +36V = V 2 2 3 V S (V) Figure 8. Charge Injection (QINJ) vs. Source Voltage (VS), Drain to Source 4872-2 2 2 2 3 V S (V) Figure 2. Charge Injection (QINJ) vs. Source Voltage (VS), Source to Drain 4872-23 Rev. Page of 2
Data Sheet 4 35 = 2V, = V = 36V, = V = +5V, = 5V = +2V, = 2V 5 4 +25 C +75 C +2 C = +2V = 2V t TRANSITION TIME (ns) 3 25 2 5 CHARGE INJECTION (pc) 3 2 5 4 6 6 2 TEMPERATURE ( C) Figure 22. ttransition Time vs. Temperature 4872-2 2 5 5 5 5 2 V S (V) Figure 25. Charge Injection as a Function of VS for Various Temperatures, ±2 V Dual Supply 4872-25 8 7 = +5V = 5V.8.6 +25 C +75 C +2 C CAPACITANCE (pf) 6 5 4 3 2 SOURCE/DRAIN ON DRAIN OFF CHARGE INJECTION (pc).4.2.2 CHARGE INJECTION (pc) SOURCE OFF 5 5 5 5 V S (V) Figure 23. Capacitance vs. Source Voltage(VS), ±5 V Dual Supply 3. 2.5 2..5..5 +25 C +75 C +2 C.5 = +5V = 5V. 5 5 5 5 V S (V) Figure 24. Charge Injection as a Function of VS for Various Temperatures, ±5 V Dual Supply 4872-26 4872-24.4 = 2V = V.6 2 4 6 8 2 V S (V) Figure 26. Charge Injection as a Function of VS for Various Temperatures, 2 V Single Supply CHARGE INJECTION (pc) 4. 3.5 3. 2.5 2..5..5 +25 C +75 C +2 C.5 = 36V = V. 5 5 2 25 3 35 V S (V) Figure 27. Charge Injection as a Function of VS for Various Temperatures, 36 V Single Supply 4872-26 4872-27 Rev. Page 2 of 2
Data Sheet 2 = 2V, = V = 36V, = V = +5V, = 5V = +2V, = 2V 7 6 = 2V, = V = 36V, = V = +5V, = 5V = +2V, = 2V 5 8 4 I DD (µa) 6 I SS (µa) 3 4 2 2 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 28. IDD vs Temperature 4872-28 55 25 5 35 65 95 25 55 85 25 TEMPERATURE ( C) Figure 29. ISS vs Temperature 4872-29 Rev. Page 3 of 2
TEST CIRCUITS DD.µFV.µF Data Sheet NC S S2 D I D (ON) A NETWORK ANALYZER V OUT R L 5Ω S S2 D R L 5Ω S8 V S GND V S NC = NO CONNECT V D 4872-27 CHANNEL-TO-CHANNEL CROSSTALK = 2 log V OUT V S 4872-29 Figure 3. On Leakage Figure 33. Channel-to-Channel Crosstalk.µF DD NETWORK ANALYZER 5Ω V Sx 5Ω V S Sx D GND R L 5Ω V OUT I DS S R ON =V I DS Figure 3. On Resistance 4872-28 OFF ISOLATION = 2 log V OUT V S Figure 34. Off Isolation 4872-3 DD.µFV.µF NETWORK ANALYZER I S (OFF) A S D I D (OFF) A Sx D 5Ω V S A S8 GND V OUT R L 5Ω V S Figure 32. Off Leakage V D 4872-3 V OUT WITH SWITCH INSERTION LOSS = 2 log V OUT WITHOUT SWITCH Figure 35. 3 db Bandwidth 4872-33 Rev. Page 4 of 2
Data Sheet 3V ADDR ESS DRIVE (V IN ) V 5% 5% t R < 2ns t F < 2ns V IN 5Ω A A A2 S S2 TO S7 V S t TRANSITION OUTPUT t TRANSITION 9% S8 2.V EN D V S8 OUTPUT % GND 3Ω 35pF 4872-34 Figure 36. Address to Output Switching Times, ttransition 3V ADDRESS DRIVE (V IN ) V V IN 5Ω A A A2 S S2 TO S7 V S S8 OUTPUT 8% 8% 2.V EN D OUTPUT GND 3Ω 35pF t D 4872-35 Figure 37. Break-Before-Make Time Delay, td 3V ENABLE DRIVE (V IN ) V 5% 5% A A A2 S S2 TO S8 V S t ON (EN).9V OUT t OFF (EN) EN D OUTPUT OUTPUT V IN 5Ω GND 3Ω 35pF.V OUT Figure 38. Enable Delay, ton (EN), toff (EN) 4872-36 3V A V IN A A2 V OUT Q INJ = C L V OUT V OUT V S R S Sx EN GND D C L nf V OUT V IN 4872-37 Figure 39. Charge Injection, QINJ Rev. Page 5 of 2
TERMINOLOGY IDD IDD represents the positive supply current. ISS ISS represents the negative supply current. VD, VS VD and VS represent the analog voltage on Terminal D and Terminal Sx, respectively. RON RON is the ohmic resistance between Terminal D and Terminal Sx. RON RON represents the difference between the RON of any two channels. RFLAT (ON) Flatness that is defined as the difference between the maximum and minimum value of on resistance measured over the specified analog signal range is represented by RFLAT (ON). IS (Off) IS (off) is the source leakage current with the switch off. ID (Off) ID (off) is the drain leakage current with the switch off. ID (On), IS (On) ID (on) and IS (on) represent the channel leakage currents with the switch on. VINL VINL is the maximum input voltage for Logic. VINH VINH is the minimum input voltage for Logic. IINL, IINH IINL and IINH represent the low and high input currents of the digital inputs. CD (Off) CD (off) represents the off switch drain capacitance, which is measured with reference to ground. CS (Off) CS (off) represents the off switch source capacitance, which is measured with reference to ground. CD (On), CS (On) CD (on) and CS (on) represent on switch capacitances, which are measured with reference to ground. CIN CIN represents the digital input capacitance. Data Sheet ton (EN) ton (EN) represents the delay time between the 5% and 9% points of the digital input and switch on condition. toff (EN) toff (EN) represents the delay time between the 5% and 9% points of the digital input and switch off condition. ttransition ttransition represents the delay time between the 5% and 9% points of the digital inputs and the switch on condition when switching from one address state to another. Break-Before-Make Time Delay (td) td represents the off time measured between the 8% point of both switches when switching from one address state to another. Off Isolation Off isolation is a measure of unwanted signal coupling through an off channel. Charge Injection Charge injection is a measure of the glitch impulse transferred from the digital input to the analog output during switching. Crosstalk Crosstalk is a measure of unwanted signal that is coupled through from one channel to another as a result of parasitic capacitance. Bandwidth Bandwidth is the frequency at which the output is attenuated by 3 db. On Response On response is the frequency response of the on switch. AC Power Supply Rejection Ratio (ACPSRR) ACPSRR is a measure of the ability of a device to avoid coupling noise and spurious signals that appear on the supply voltage pin to the output of the switch. The dc voltage on the device is modulated by a sine wave of.62 V p-p. The ratio of the amplitude of signal on the output to the amplitude of the modulation is the ACPSRR. Rev. Page 6 of 2
Data Sheet THEORY OF OPERATION The is a latch-up proof, bidirectional, 8: CMOS multiplexer that is designed to operate at very high temperatures. The device is controlled by four parallel digital inputs (EN, A, A, and A2). The EN input allows for the to be enabled or disabled. When the is disabled, the source pins (S to S8) disconnect from the drain pin (D). When the is enabled, the address lines (A, A, and A2) can determine which source pin (S to S8) is connected to the drain pin (D). NMOS PMOS P WELL N WELL TRENCH ISOLATION In the, an insulating oxide layer (trench) is placed between the negative channel metal-oxide semiconductor (NMOS) and the positive channel metal-oxide semiconductor (PMOS) transistors of each CMOS switch. Parasitic junctions, which occur between the transistors in junction isolated switches, are eliminated, and the result is a completely latch-up proof switch that has minimal leakage over temperature. In junction isolation, the N well and P well of the PMOS and NMOS transistors form a diode that is reverse biased under normal operation. However, during overvoltage conditions, this diode can become forward-biased. A silicon controlled rectifier (SCR) type circuit is formed by the two transistors, causing a significant amplification of the current that, in turn, leads to latch-up. With trench isolation, this diode is removed, and the result is a latch-up proof switch. TRENCH BURIED OXIDE LAYER HANDLE WAFER Figure 4. Trench Isolation 4872-38 Rev. Page 7 of 2
APPLICATIONS INFORMATION The ultralow capacitance and charge injection of this switch makes it an ideal solution for data acquisition and sample-andhold applications, where low glitch and fast settling are required. The can operate in a wide ambient temperature range from 55 C to +2 C. Its wide range coupled with its Data Sheet latch-up immune and low leakage features makes the perfect for use in harsh environments, such as downhole drilling and avionics. The has achieved a JESD78D Class II rating, handling stresses to ±5 ma with a ms pulse at the maximum operating temperature of the device (2 C). Rev. Page 8 of 2
Data Sheet OUTLINE DIMENSIONS 8.89 MIN 7. 6.86 6.7 5.23 5.8 4.93 6 25.65 25.4 25.5.34.27.2.36.6 9.96 7.4 7.24 7.9 R.32 BSC 8 TOP VIEW 9.48.43.38 BOTTOM VIEW.89 BSC.2 MIN PKG-464/4875.52.27.2 END VIEW 2.32 2..9.66 MIN.2 MIN.7 REF SIDE VIEW 4-27-26-A Figure 4. 6-Lead Ceramic Flat Package [FLATPACK] (F-6-) Dimensions shown in millimeters.36.6 9.96 7.4 7.24 7.9 8 7. 6.86 6.7 5.23 5.8 4.93 2.446 REF 6 9 PKG-4875 2.32 2..9 3.2 2.74 2.46 SEATING PLANE.34.27.2 BOTTOM VIEW SIDE VIEW.48.43.38.66 MIN.432.38.33.254.23.52.52.27.2.254.23.52 4.978 4.826 4.673 END VIEW Figure 42. 6-Lead Ceramic Flat Package with Reverse Formed Gullwing Leads [FLATPACK_RF] Cavity Down (FR-6-) Dimensions shown in millimeters.524.397.27.524.397.27 6-24-25-A Rev. Page 9 of 2
Data Sheet ORDERING GUIDE Model Temperature Range Package Description Package Option HFZ 55 C to +2 C 6-Lead Ceramic Flat Package [FLATPACK] F-6- HFRZ 55 C to +2 C 6-Lead Ceramic Flat Package with Reverse Formed Gullwing Leads [FLATPACK_RF] FR-6- EVAL-EBZ Evaluation Board Z = RoHS Compliant Part. 26 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D4872--9/6() Rev. Page 2 of 2