Da t as heet AS1746 0 . 5 / 0 . 6 Ω, L o w - Vo l ta g e , D u a l S P D T A n a l o g S w i t c h 1 General Description 2 Key Features The AS1746 is a low on-resistance (RON), low-voltage, dual-single-pole/double-throw (SPDT) analog switch designed to operate from a single +1.8 to +5.5V supply. The device features a 0.5Ω (max) RON for normally closed (NC) switches and a 0.6Ω (max) RON for normally open (NO) switches using a +2.7V supply. The AS1746 features break-before-make switching (2ns) with tON = 50ns and tOFF = 30ns (using a +2.7V supply). The digital logic inputs are 1.8V logic-compatible with +2.7 to +3.3V supplies. The AS1746 is available in a TDFN-10 (3x3mm) package and a WL-CSP-10 package. ! Single Supply Operation: +1.8V to +5.5V ! Normally Closed Switch RON: 0.45Ω (+2.7V Supply) ! Normally Open Switch RON: 0.55Ω (+2.7V Supply) ! RON Matching Between Channels: 0.06Ω ! RON Flatness Over Signal Range: 0.15Ω ! Supply Current: 50nA ! Rail-to-Rail Signal Handling ! 1.8V Logic Compatibility ! Low Crosstalk: -60dB (100kHz) ! High Off-Isolation: -64dB (100kHz) ! Total Harmonic Distortion: 0.025% ! Ultra-Low Leakage Currents: 1nA (@ TAMB = +25ºC) ! Package Types: - TDFN-10 (3x3mm) - WL-CSP-10 3 Applications The device is ideal for audio headsets, MP3 players, power routing switches, relay replacements, audio and video signal routing, communications circuits, PCMCIA cards, mobile phones, MODEMs, and any battery-operated equipment. Figure 1. AS1746 - Block Diagram AS1746 V+ 1 10 NO2 Truth Table NO1 2 COM1 3 9 COM2 8 IN2 IN1 4 7 NC2 NC1 5 6 GND www.austriamicrosystems.com Revision 1.03 NOx to COM NCx to COM Low Off On High On Off IN Switch shown for logic low input. 1 - 15 AS1746 Datasheet - P i n o u t 4 Pinout Pin Assignments Figure 2. Pin Assignments (Top View) GND V+ 1 10 NO2 NO1 2 COM1 3 NC1 C1 IN1 C2 COM1 C3 NO1 C4 B1 A1 NC2 A2 IN2 A3 COM2 A4 NO2 9 COM2 AS1746 8 IN2 IN1 4 7 NC2 NC1 5 6 GND AS1746 TDFN-10 (3x3mm) B4 V+ WL-CSP-10 Pin Descriptions Table 1. Pin Descriptions Pin Number See Figure 2 Pin Name V+ NO1 COM1 IN1 NC1 GND NC2 IN2 COM2 NO2 www.austriamicrosystems.com Description Positive Input Supply Voltage Normally Open Analog Switch 1 Analog Switch 1 Common Switch 1 Digital Input Normally Closed Analog Switch 1 Ground Normally Closed Analog Switch 2 Switch 2 Digital Input Analog Switch 2 Common Normally Open Analog Switch 2 Revision 1.03 2 - 15 AS1746 Datasheet - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 2 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 Electrical Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Parameter Min Max Units V+, INx to GND -0.3 +7 V COMx, NOx, NCx, to GND -0.3 V+ + 0.3 V COMx, NOx, NCx Continuous Current -300 +300 mA COMx, NOx, NCx Peak Current -400 +400 mA Pulsed at 50% duty cycle COMx, NOx, NCx Peak Current -500 +500 mA Pulsed at 10% duty cycle 444 mW TAMB = +70ºC kV HBM Mil-Std883E 3015.7 methods 250 mA Class II, Level A Continuous Power Dissipation Electro-Static Discharge 2.5 Latchup Immunity Operating Ambient Temperature Range -40 +85 ºC Storage Temperature Range -65 +150 ºC Package Body Temperature www.austriamicrosystems.com +260 ºC Revision 1.03 Comments COMx, NOx, NCx signals exceeding V+ or GND are internally clamped by diodes and forwarddiode current must be limited to the maximum current rating. The reflow peak soldering temperature (body temperature) specified is in accordance with IPC/JEDEC J-STD-020D “Moisture/Reflow Sensitivity Classification for Non-Hermetic Solid State Surface Mount Devices”. The lead finish for Pb-free leaded packages is matte tin (100% Sn). 3 - 15 AS1746 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics (V+ = +2.7V to +3.3V, VIH = +1.4V, VIL = +0.5V, TAMB = -40°C to +85°C (unless otherwise specified). Typical values are at +3V and +25°C. Table 3. Electrical Characteristics Symbol Parameter 1 Condition Min Typ Max Unit V+ V Analog Switch VNOx, VNCx, VCOMx RON(NC) RON(NO) Analog Signal Range NCx On-Resistance NOx On-Resistance 0 V+ = 2.7V, ICOMx = 100mA, VNCx = 0 to V+, TAMB = 25°C 0.3 0.45 Ω V+ = 2.7V, ICOMx = 100mA, VNCx = 0 to V+ 0.5 V+ = 2.7V, ICOMx = 100mA, VNOx = 0 to V+, TAMB = 25°C 0.35 0.55 Ω V+ = 2.7V, ICOMx = 100mA, VNOx = 0 to V+ 0.6 ΔRON On-Resistance Match 2 Between Channels V+ = 2.7V, ICOMx = 100mA, VNCx/VNOx = 1.5V 0.02 0.06 Ω RFLAT(NC) NCx On-Resistance 3 Flatness V+ = 2.7V, ICOMx = 100mA, VNCx = 0 to V+ 0.06 0.15 Ω RFLAT(NO) NOx On-Resistance 3 Flatness V+ = 2.7V, ICOMx = 100mA, VNOx = 0 to V+ 0.1 0.35 Ω INOxOFF/ INCxOFF NCx or NOx Off4 Leakage Current ICOMxON COMx On-Leakage 4 Current V+ = 3.3V, VNOx/VNCx = 3V, 0.3V, VCOMx = 0.3V, 3V, TAMB = 25°C -1 1 nA V+ = 3.3V, VNOx/VNCx = 3V, 0.3V, VCOMx = 0.3V, 3V -10 10 nA V+ = 3.3V, VNOx/VNCx = 3V, 0.3V or float, VCOMx = 3V, 0.3V, or float, TAMB = 25°C -2 2 nA V+ = 3.3V, VNOx/VNCx = 3V, 0.3V or float, VCOMx = 3V, 0.3V, or float -30 30 nA Dynamic Characteristics tON tOFF Turn On Time Turn Off Time 5 V+ = 2.7V, VNOx/VNCx = 1.5V, RLOAD = 50Ω, CLOAD = 35pF, TAMB = 25°C 5 60 V+ = 2.7V, VNOx/VNCx = 1.5V, RLOAD = 50Ω, CLOAD = 35pF, TAMB = 25°C 20 V+ = 2.7V, VNOx/VNCx = 1.5V, RLOAD = 50Ω, CLOAD = 35pF (see Figure 18 on page 10) Q Charge Injection COMx = 0, RS = 0, CLOAD = 1nF (see Figure 19 on page 10) Revision 1.03 30 ns V+ = 2.7V, VNOx/VNCx = 1.5V, RLOAD = 50Ω, CLOAD = 35pF (see Figure 17 on page 10) Break-Before-Make 5 Delay 50 ns V+ = 2.7V, VNOx/VNCx = 1.5V, RLOAD = 50Ω, CLOAD = 35pF (see Figure 17 on page 10) tBBM www.austriamicrosystems.com 30 35 2 15 ns 200 pC 4 - 15 AS1746 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s Table 3. Electrical Characteristics (Continued) 1 Condition 6 VCOMx = 1VRMS, RLOAD = 50Ω, CLOAD = 5pF, f = 100kHz (see Figure 20 on page 11) -64 dB Crosstalk VCOMx = 1VRMS, RLOAD = 50Ω, CLOAD = 5pF, f = 100kHz (see Figure 20 on page 11) -60 dB THD Total Harmonic Distortion RLOAD = 600Ω, INx = 2VP-P, f = 20Hz to 20kHz 0.025 % CNCXOFF NCx Off-Capacitance f = 1MHz (see Figure 21 on page 11) 84 pF CNOXOFF NOx Off-Capacitance f = 1MHz (see Figure 21 on page 11) 37 pF CNCXON NCx On-Capacitance f = 1MHz (see Figure 21 on page 11) 190 pF CNOXON NOx On-Capacitance f = 1MHz (see Figure 21 on page 11) 150 pF Symbol Parameter VISO Off-Isolation VXT Min Typ Max Unit Digital I/O VIH Input Logic High VIL Input Logic Low IINx INx Input Leakage Current 1.4 V 0.5 V -1 1 µA 1.8 5.5 V V+ = 5.5V; VINx = 0 or V+, TAMB = 25°C -50 50 V+ = 5.5V; VINx = 0 or V+ -350 350 VINx = 0 or V+ Power Supply V+ Power Supply Range I+ Supply Current nA 1. The algebraic convention used in this data sheet is such that the most negative value is the minimum and the most positive value is the maximum. 2. ΔRON = RON(MAX) - RON(MIN) between pins NC1 and NC2 or between pins NO1 and NO2. 3. Flatness is defined as the difference between the maximum and minimum value of RON as measured over the specified analog signal ranges. 4. 100% tested. 5. Guaranteed by design. 6. Off-isolation = 20LOG10 (VCOM/VNO), VCOM = output, VNO = input to off switch. www.austriamicrosystems.com Revision 1.03 5 - 15 AS1746 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s 7 Typical Operating Characteristics TAMB = +25ºC. Values measured in TDFN-10 (3x3mm) package. Figure 3. NC ON-Resistance vs. VCOM Figure 4. NO ON-Resistance vs. VCOM 1.1 0.7 VDD = 1.8V 1.0 VDD = 1.8V 0.9 0.8 VDD = 2.0V 0.5 0.4 R ON (Ω) . R ON (Ω) . 0.6 VDD = 2.3V VDD = 2.5V VDD = 3.0V 0.3 0.7 VDD = 2.0V 0.6 0.5 VDD = 2.3V 0.4 VDD = 2.5V VDD = 3.0V 0.3 VDD =5.0V 0.2 VDD =5.0V 0.2 0 1 2 3 4 0 5 1 2 VCOM (V) Figure 5. NC ON-Resistance vs. VCOM, 5V 4 5 Figure 6. NO ON-Resistance vs. VCOM, 5V 0.45 0.45 0.40 0.40 0.35 R ON (Ω) . R ON (Ω) . 3 VCOM (V) TAMB = +85°C 0.30 0.25 TAMB = +85°C 0.35 0.30 TAMB = +25°C 0.25 TAMB = +25°C 0.20 0.20 TAMB = -40°C TAMB = -40°C 0.15 0.15 0 1 2 3 4 5 0 1 2 VCOM (V) Figure 7. NC ON-Resistance vs. VCOM, 3V 4 5 Figure 8. NO ON-Resistance vs. VCOM, 3V 0.45 0.50 0.45 0.40 TAMB = +85°C TAMB = +85°C 0.40 0.35 R ON (Ω) . R ON (Ω) . 3 VCOM (V) 0.30 TAMB = +25°C 0.25 0.35 TAMB = +25°C 0.30 TAMB = -40°C 0.25 TAMB = -40°C 0.20 0.20 0.15 0.15 0 0.5 1 1.5 2 2.5 3 0 VCOM (V) www.austriamicrosystems.com 0.5 1 1.5 2 2.5 3 VCOM (V) Revision 1.03 6 - 15 AS1746 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 9. Turn-ON/OFF vs. Temperature, VDD = 3V Figure 10. Turn-ON/OFF Times vs. VSupply 35 90 80 NC tON 70 tON /tOFF (ns) . tON /tOFF (ns) . 30 NO 25 20 NO tOFF 15 60 50 40 tON 30 20 NC tOFF 10 10 -40 0 -15 10 35 60 85 1.5 2.5 3.5 Figure 11. Logic Threshold Voltage vs. Supply Voltage 350 . 300 250 VIN rising 200 1 Q (pC) . Logic Threshold Voltage (V) 5.5 Figure 12. Charge Injection vs. COM Voltage 1.5 VIN falling 150 100 50 0.5 0 -50 -100 0 -150 0 1 2 3 4 5 6 0 Figure 13. Frequency Response 0 3 4 5 6 0.05 ON- Response THD+N (%) . 0.04 Crosstalk OFF- Isolation -60 -80 -100 0.001 2 Figure 14. THD+N vs. Frequency -20 -40 1 VCOM (V) Supply Voltage (V) Loss (dB) . 4.5 VSupply (V) Temperature (°C) 0.03 0.02 0.01 0 0.1 10 1000 10 Frequency (MHz) www.austriamicrosystems.com 1000 100000 Frequency (Hz) Revision 1.03 7 - 15 AS1746 Datasheet - D e t a i l e d D e s c r i p t i o n 8 Detailed Description The AS1746 is a low on-resistance, low-voltage, asymmetrical dual-SPDT analog switch designed to operate from a single +1.8 to +5.5V supply. The device is fully specified for nominal 3V applications and features break-before-make switching and fast switching speeds (tON = 60ns max, tOFF = 35ns max). The device provides 0.5Ω (max) RON for its NC switch, and 0.6Ω (max) RON for its NO switch for applications that require asymmetrical loads. Figure 15. AS1746 - Block Diagram – WL-CSP-10 AS1746 GND NC1 C1 IN1 B1 A1 NC2 C2 A2 IN2 COM1 C3 A3 COM2 NO1 C4 A4 NO2 B4 V+ www.austriamicrosystems.com Revision 1.03 8 - 15 AS1746 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 9 Application Information Digital Control Inputs The AS1746 logic inputs can handle up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply, INx may be driven low to GND and high to 5.5V. Driving INx rail-to-rail minimizes power consumption. Analog Signal Levels Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in RON (see Typical Operating Characteristics on page 6). The switches are bi-directional, so the NOx, NCx, and COMx pins can be used as inputs or outputs. Power Supply Sequencing Proper power supply sequencing is recommended for all CMOS devices. The recommended sequence is as follows: 1. V+ 2. NOx, NCx, COMx Always apply V+ before applying analog signals, especially if the analog signal is not current limited. If this sequencing is not possible, and if the analog inputs are not current limited to <20mA, add a small signal protection diode (D1) as shown in Figure 16. Overvoltage Protection Using a protection diode will reduce the analog range to a diode voltage drop (approximately 0.7V) below V+ (for D1). RON will increase slightly at low supply voltages. Caution: The maximum supply voltage (V+) must not exceed +7V. Do not exceed the absolute maximum ratings because stresses beyond the ratings listed in Absolute Maximum Ratings on page 3 may cause permanent damage to the device. Note: Protection diode D1 can also protect the device from some overvoltage conditions. Figure 16. Overvoltage Protections using 2 External Blocking Diodes AS1746 Positive Supply D1 V+ NO COM VGEN GND Note: No damage will result to the circuit shown in Figure 16 if the supply voltage is below the absolute maximum rating applied to an analog signal pin (NOx, NCx, or COMx). www.austriamicrosystems.com Revision 1.03 9 - 15 AS1746 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Test Circuits and Timing Diagrams Figure 17. Switching Time V+ AS1746 VIN Logic Input COMx VOUT NOx or NCx RLOAD 50Ω CLOAD 35pF GND VOUT = VNx † ( 50% 50% VIL tOFF † VOUT Switch Output 0 INx Logic Input tR < 5ns tF < 5ns VIH RLOAD RLOAD + RON 0.9 x VOUT 0.9 x VOUT tON ) Logic input waveforms inverted for switches that have the opposite logic sense. Includes stray capacitance and fixture capacitance. Figure 18. Break-Before-Make Interval V+ VIH AS1746 NCx VIN COMx NOx VOUT RLOAD 50Ω CLOAD 35pF INx Logic Input Logic Input 50% 0 † 0.9 x VOUT VOUT GND tD † Includes stray capacitance and fixture capacitance. Figure 19. Charge Injection V+ AS1746 ΔVOUT VOUT INx VIL to VIH NOx or NCx COMx INx Off VOUT On Off RGEN VGEN GND CLOAD INx On Off Off Q = ΔVOUT x CLOAD INx depends on switch configuration; input polarity is determined by the sense of the switches. www.austriamicrosystems.com Revision 1.03 10 - 15 AS1746 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Figure 20. On-Loss, Off-Isolation, Crosstalk Network Analyzer VIN 50Ω VOUT Measure AS1746 +5V V+ 50Ω COMx 10nF NCx NOx 50Ω 0V or V+ Reference INx GND 50Ω 50Ω Off-isolation = 20LOG(VOUT/VIN) On-loss = 20LOG(VOUT/VIN) Crosstalk = 20LOG(VOUT/VIN) Notes: 1. 2. 3. 4. Measurements are standardized against short-circuit at all terminals. Off-isolation is measured between COMx and the off NCx/NOx terminal of each switch. Crosstalk is measured from one channel to all other channels. Signal direction through the switch is reversed; worst values are recorded. Figure 21. Channel On- Off-Capacitance V+ V+ AS1746 COMx 10nF VIH or VIL 1MHz Capacitance Analyzer INx GND www.austriamicrosystems.com NCx or NOx Revision 1.03 11 - 15 AS1746 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 10 Package Drawings and Markings The device is available in a TDFN-10 (3x3mm) package and a WL-CSP-10 package. Figure 22. TDFN-10 (3x3mm) Packagee D2 SEE DETAIL B A D D2/2 B aaa C 2x E E2 E2/2 L PIN 1 INDEX AREA (D/2 xE/2) K PIN 1 INDEX AREA (D/2 xE/2) aaa C N N-1 2x e TOP VIEW e b (ND-1) X e ddd bbb C C A B BTM VIEW Terminal Tip DETAIL B A3 ccc C A C 0.08 C SIDE VIEW A1 SEATING PLANE Datum A or B ODD TERMINAL SIDE Symbol A A1 A3 L aaa bbb ccc ddd eee ggg Min 0.70 0.00 0.30 Typ 0.75 0.02 0.20 REF 0.40 0.15 0.10 0.10 0.05 0.08 0.10 Max 0.80 0.05 0.50 Notes 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 Symbol D BSC E BSC D2 E2 θ K b e N ND Min 2.20 1.40 0º 0.20 0.18 Typ 3.00 3.00 Max 2.70 1.75 14º 0.25 0.50 10 5 0.30 Notes 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2, 5 1, 2 1, 2, 5 Notes: 1. Figure 22 is shown for illustration only. 2. All dimensions are in millimeters; angles in degrees. 3. Dimensioning and tolerancing conform to ASME Y14.5 M-1994. 4. N is the total number of terminals. 5. The terminal #1 identifier and terminal numbering convention shall conform to JEDEC 95-1, SPP-012. Details of terminal #1 identifier are optional, but must be located within the zone indicated. The terminal #1 identifier may be either a mold or marked feature. 6. Dimension b applies to metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 7. ND refers to the maximum number of terminals on side D. 8. Unilateral coplanarity zone applies to the exposed heat sink slug as well as the terminals www.austriamicrosystems.com Revision 1.03 12 - 15 AS1746 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s Figure 23. WL-CSP-10 Package B A C A1 f 1 e ob 2 e D1 3 e 4 f f e e A2 f E1 A E 4 3 D 2 Symbol A A1 A2 b D D1 E E1 e f Dimensions Min Typ 0.677 0.707 0.230 0.250 0.447 0.457 0.301 0.311 2.05 1.5 1.55 1 0.5 0.275 Max 0.737 0.270 0.467 0.321 1 A B www.austriamicrosystems.com C Revision 1.03 13 - 15 AS1746 Datasheet - O r d e r i n g I n f o r m a t i o n 11 Ordering Information The device is available as the standard products shown in Table 4. Table 4. Ordering Information Ordering Code Marking Description Delivery Form Package AS1746-BTDR ASK8 0.5/0.6Ω, Low-Voltage, Dual SPDT Analog Switch Tray TDFN-10 (3x3mm) AS1746-BTDT ASK8 0.5/0.6Ω, Low-Voltage, Dual SPDT Analog Switch Tape and Reel TDFN-10 (3x3mm) AS1746-BWLT* ASK7 0.5/0.6Ω, Low-Voltage, Dual SPDT Analog Switch Tape and Reel WL-CSP-10 * Available on request. Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect For further information and requests, please contact us mailto:[email protected] or find your local distributor at http://www.austriamicrosystems.com/distributor www.austriamicrosystems.com Revision 1.03 14 - 15 AS1746 Datasheet Copyrights Copyright © 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com Revision 1.03 15 - 15