Quad SPST CMOS Analog Switches

Transcription

1 9-3960; Rev 3; 6/06 Quad SPST CMOS Analog Switches General Description The are normally open, quad singlepole single-throw (SPST) analog switches. These CMOS switches can be continuously operated with power supplies ranging from ±4.5V to ±8V. Maxim guarantees that these switches will not latch up if the power supplies are disconnected with input signals still connected. The are similar to the DG20/DG2 except for inverted control inputs. All devices have guaranteed break-before-make switching, as well as essentially constant on-resistance over the analog signal range. All switches conduct current in either direction and add no offset to the output signal. Compared to the original manufacturer s products, Maxim s consume very little power, making them better suited for portable applications. Maxim has also eliminated the need for the third logic power supply (V L ) that is required for the operation of the original manufacturer s DG22 without sacrificing compatibility. Analog Multiplexers Programmable Gain Amplifiers Communications Systems Sample/Holds Automatic Test Equipment PBX, PABX Applications Typical Operating Circuit Features Guaranteed ±4.5V to ±8V Operation No V L Supply Required Nonlatching with Supplies Turned Off and Input Signals Present CMOS and TTL Logic Compatible Monolithic, Low-Power CMOS Design Ordering Information PART TEMP RANGE PIN-PACKAGE DG202CUE 0 C to +70 C 6 TSSOP DG202CSE 0 C to +70 C 6 SO DG202CJ 0 C to +70 C 6 Plastic DIP DG202C/D 0 C to +70 C Dice DG202AEGE -40 C to +85 C 6 QFN (5mm x 5mm) DG202AEUE -40 C to +85 C 6 TSSOP DG202ADY -40 C to +85 C 6 SO DG202ADJ -40 C to +85 C 6 Plastic DIP DG202AK -55 C to +25 C 6 CERDIP DG22CUE 0 C to +70 C 6 TSSOP DG22CSE 0 C to +70 C 6 SO DG22CJ 0 C to +70 C 6 Plastic DIP DG22C/D 0 C to +70 C Dice DG22EGE -40 C to +85 C 6 QFN (5mm x 5mm) DG22EUE -40 C to +85 C 6 TSSOP DG22DY -40 C to +85 C 6 SO DG22DJ -40 C to +85 C 6 Plastic DIP DG22ETE -40 C to +85 C 6 Thin QFN Pin Configurations IN 6 IN2 V IN x 0V 5kΩ * * kΩ -5V 4 DG202 DG V kΩ * 8 9 * 20kΩ 5kΩ V OUT D S V- GND S4 D4 IN DG202 DG22 DIP/SO D2 S2 V+ V L S3 D3 IN3 PROGRAMMABLE GAIN AMPLIFIER NOTE: *PINS, 8, 9, AND 6 ARE LOGIC CONTROL S LOGIC 0 OFF ON ES SHOWN FOR LOGIC 0 Pin Configurations continued at end of data sheet. Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at

2 ABSOLUTE MAXIMUM RATINGS (DG22) V+ to V V V IN to Ground V-, V+ V L to Ground V, 25V V S or V D to V+... 0, -40V V S or V D to V , 40V V+ to Ground V V- to Ground V Current, Any Terminal Except S or D mA Continuous Current, S or D mA Peak Current, S or D (pulsed at ms 0% duty cycle max)...70ma Storage Temperature Range C to +25 C Note : Device mounted with all leads soldered to PC board. Operating Temperature Range DG22C C to +70 C DG22D/E C to +85 C Power Dissipation (T A = +70 C) (Note ) 6-Pin Plastic Dip (derate 0.5mW/ C above +70 C)..842mW 6-Pin Narrow SO (derate 8.7mW/ C above+70 C) mW 6-Pin TSSOP (derate 9.4mW/ C above +70 C)...755mW 6-Pin QFN (5mm x 5mm) (derate 9.2mW/ C above +70 C)...538mW 6-Pin Thin QFN (derate 4.7mW/ C above +70 C)...77mW 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 (DG22) (V+ = +5V, V- = -5V, GND = 0, T A = +25 C, unless otherwise noted.) (For more information on TYP values see Note 2.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Analog Signal Range V ANALOG V Drain-Source ON-Resistance R DS (ON) V D = ±0V, V IN = 2.4V, I S = ma 5 75 Ω V S = 4V, V D = -4V Source OFF-Leakage Current I S (OFF) V IN = 0.8V VS = -4V, V D = 4V V S = 4V, V D = -4V Drain OFF-Leakage Current I D (OFF) V IN = 0.8V VS = -4V, V D = 4V Drain ON-Leakage Current (Note 3) Input Current with Input Voltage High Input Current with Input Voltage Low DYNAMIC V S = V D = 4V, V IN = 2.4V I D (ON) V S = V D = -4V, V IN = 2.4V V IN = 2.4V I INH V IN = 5V I INL V IN = Turn-ON Time t ON See Switching Time Test Circuit t OFF Turn-OFF Time V S = 2V, R L = kω, C L = 35pF t OFF2 450 Source OFF-Capacitance C S (OFF) V S = 0, V IN = 0, f = MHz 5 Drain OFF-Capacitance C D (OFF) V D = 0, V IN = 0, f = MHz 5 Channel ON-Capacitance C D + S (ON) V D = V S = 0, V IN = 5V, f = MHz 6 OFF-Isolation (Note 4) OIRR 70 V IN = 0, R L = kω, C L = 5pF, Crosstalk CCRR V S = VRMS, f = 00kHz 90 (Channel to Channel) na µa ns pf db 2

3 ELECTRICAL CHARACTERISTICS (DG22) (continued) (V+ = +5V, V- = -5V, GND = 0, T A = +25 C, unless otherwise noted.) (For more information on TYP values see Note 2.) SUPPLY PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Positive Supply Current I Logic Supply Current I L 0 0 Negative Supply Current I- V IN = 0 and 2.4V (all) Power-Supply Range for Continous Operation ABSOLUTE MAXIMUM RATINGS (DG202) V OP ±4.5 ±8.0 V Note 2: Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. Note 3: I D(ON) is leakage from driver into ON switch. Note 4: OFF-Isolation = 20 log V S /V D, V S = input to OFF switch, V D = output. ma Voltages Reference to V- V V GND....25V Digital Inputs (Note ), V S, V D...-2V to (V+ + 2V) or 20mA, whichever occurs first Current, Any Terminal Except S or D mA Continuous Current, S or D...20mA Peak Current, S or D (pulsed at ms 0% duty cycle max).70ma Operating Temperature Range DG202C C to +70 C DG202D/E C to +85 C DG202A C to +25 C Storage Temperature Range C to +50 C Power Dissipation (Note 2) 6-Pin Plastic Dip (derate 0.5mW/ C above +70 C)...842mW 6-Pin SO (derate 8.7mW/ C above +70 C)...696mW 6-Pin TSSOP (derate 9.4mW/ C above +70 C)...755mW 6-Pin QFN (5 5) (derate 9.2mW/ C above +70 C)...538mW 6-Pin CERDIP (derate 0.0mW/ C above +70 C)...800mW Note : Signals on S _, D _, or IN _ exceeding V+ or V- on Maxim s DG202 will be clamped by internal diodes, and are also internally current limited to 25mA. Note 2: Device mounted with all leads soldered to PC board. 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 (DG202) (V+ = +5V, V- = -5V, GND = 0, T A = +25 C, unless otherwise noted.) (For more information on TYP values see Note 3.) PARAMETER SYMBOL CONDITIONS DG202A DG202C, D, E MIN TYP MAX MIN TYP MAX UNITS Analog Signal Range V ANALOG V Drain-Source ON Resistance R DS (ON) V D = ±0V, V IN = 2.4V, I S = ma Ω Source OFF-Leakage Current I S (OFF) V IN = 0.8V Drain OFF-Leakage Current I D (OFF) V IN = 0.8V Drain ON-Leakage Current (Note 4) I D (ON) V IN = 2.4V V S = 4V, V D = -4V V S = -4V, V D = 4V V S = 4V, V D = -4V V S = -4V, V D = 4V V S = -4V V S = 4V na 3

4 ELECTRICAL CHARACTERISTICS (DG202) (continued) (V+ = +5V, V- = -5V, GND = 0, T A = +25 C, unless otherwise noted.) (For more information on TYP values see Note 3.) PARAMETER SYMBOL CONDITIONS Input Current with Input Voltage High Input Current with Input Voltage Low DYNAMIC DG202A DG202C, D, E MIN TYP MAX MIN TYP MAX UNITS V IN = 2.4V I INH V IN = 5V I INL V IN = Turn-OFF Time t OFF Test Circuit Turn-ON Time t ON See Figure Switching Time Charge Injection Q C L = 000pF, V GEN = 0, R GEN = 0 µa ns pc Source OFF-Capacitance C S (OFF) V S = 0, 5 5 Drain OFF-Capacitance C D (OFF) V IN = f = 40kHz C D (ON) V D = V S = 0, Channel ON-Capacitance C S (ON) V IN = 5V OFF-Isolation V IN = 0, Z L = 75Ω Crosstalk (Channel to Channel) SUPPLY V S = 2.0V, f = 00kHz Positive Supply Current I+ All channels ON or OFF Negative Supply Current I- All channels ON or OFF Power-Supply Range for Continuous Operation V OP ±4.5 ±8 ±4.5 ±8.0 V pf db ma Note 3: Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. Note 4: I D (ON) is leakage from driver into ON switch. 4

5 ELECTRICAL CHARACTERISTICS (DG202) (V+ = +5V, V- = -5V, GND = 0, T A = full opearting temperature range, unless otherwise noted.) (For more information on TYP values see Note 3.) PARAMETER SYMBOL CONDITIONS DG202A DG202C, D, E MIN TYP MAX MIN TYP MAX UNITS Analog Signal Range V ANALOG V Drain-Source ON Resistance (Note 5) Source OFF-Leakage Current I S (OFF) V IN = 0.8V Drain OFF-Leakage Current I D (OFF) V IN = 0.8V Drain ON-Leakage Current (Note 6) Input Current with Input Voltage High Input Current with Input Voltage Low R DS (ON) V D = ±0V, V IN = 2.4V, I S = ma Ω I D (ON) V IN = 2.4V V S = 4V, V D = -4V V S = -4V, V D = 4V V S = 4V, V D = -4V V S = -4V, V D = 4V V S = -4V V D = 4V V IN = 2.4V I INH V IN = 5V.0.0 I INL V IN = Note 5: Electrical characteristics, such as On-Resistance, will change when power supplies other than ±5V, are used. Note 6: I D (ON) is leakage from driver into ON switch. na µa Pin Description PIN DIP/SO/TSSOP QFN/TQFN NAME FUNCTION, 6, 9, 8 5, 4, 7, 6 IN IN4 Input 2, 5, 0, 7 6, 3, 8, 5 D D4 Analog Switch Drain Terminal 3, 4,, 6, 2, 9, 4 S S4 Analog Switch Source Terminal 4 2 V- Negative-Supply Voltage Input 5 3 GND Ground 2 0 N.C. No Connection 3 V+ Positive-Supply Voltage Input Connected to Substrate EP EP Exposed Pad. Connect exposed pad to V+ or leave EP unconnected. Switching Time Test Circuit Switch output waveform shown for V S = constant with logic input waveform as shown. Note that V S may be +ve or -ve as per switching times test circuit. V O is the steady state output with switch on. Feedthrough via gate capacitance may result in spikes at leading and trailing edge of output waveform. Protecting Against Fault Conditions Fault conditions occur when power supplies are turned off when input signals are still present, or when overvoltages occur at the inputs during normal operation. In either case, source-to-body diodes can be forward biased and conduct current from the signal source. If 5

6 LOGIC tr < 20ns tf < 20ns OUTPUT 3V 0 V S Figure. Switching Time 0 LOGIC SW ON 50% V O 0.9 t OFF V O V O t OFF t OFF S V S = +2V LOGIC IN +5V V+ GND V- 0V -5V D R L kω V O = V S R L R L + r DS(ON) OUTPUT V O CL 35pF (REPEAT TEST FOR IN 2, IN 3, AND IN 4 ) Typical RDS(ON) vs. Power Supplies for Maxim s DG202, and DG22 POWER SUPPLIES R DS(ON) AT ANALOG SIGNAL LEVEL -5V +5V -0V +0V -5V +5V ±5V 350Ω 380Ω ±0V 65Ω 250Ω ±5V 25Ω 60Ω 35Ω 55Ω this current is required to be kept to low (µa) levels then the addition of external protection diodes is recommended. To provide protection for overvoltages up to 20V above the supplies, a N400 or N94 type diode should be placed in series with the positive and negative supplies as shown in Figure 2. The addition of these diodes will reduce the analog signal range to V below the positive supply and V above the negative supply. Pin Configurations (continued) -5V IN DG202 DG IN400 +5V TOP VIEW D IN IN2 D Figure 2. Protection against Fault Conditions S 2 S2 V- GND 2 3 *EP DG202 DG22 0 V+ N.C. S4 4 9 S D4 IN4 IN3 D3 TQFN* *EXPOSED PAD. CONNECT EXPOSED PAD TO V+ OR LEAVE EXPOSED PAD UNCONNECTED. 6

7 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to N E H INCHES MILLIMETERS DIM MIN MAX MIN MAX A A B C e BSC.27 BSC E H L SOICN.EPS TOP VIEW VARIATIONS: DIM D D D INCHES MILLIMETERS MIN MAX MIN MAX N MS AA AB AC D A C e B A FRONT VIEW L SIDE VIEW 0-8 PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE,.50" SOIC APPROVAL DOCUMENT CONTROL NO. REV B 7

8 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to PDIPN.EPS 8

9 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to CDIPS.EPS 9

10 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to TSSOP4.40mm.EPS PACKAGE OUTLINE, TSSOP 4.40mm BODY G 0

11 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to 32L QFN.EPS

12 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to QFN THIN.EPS Revision History Pages changed at Rev3: 6, 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 right to change the circuitry and specifications without notice at any time. 2 Maxim Integrated Products, 20 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.