|Category||Communication => Network => Switches => Switches/Multiplexers|
|Description||4/8 Channel Fault-protected Analog Multiplexers|
|Datasheet||Download ADG508FT datasheet
FEATURES Low On Resistance (300 Typ) Fast Switching Times 250 ns Max t OFF 250 ns Max Low Power Dissipation (3.3 mW Max) Fault and Overvoltage Protection +55 V) All Switches OFF with Power Supply OFF Analog Output of ON Channel Clamped within Power Supplies if an Overvoltage Occurs Latch-Up Proof Construction Break before Make Construction TTL and CMOS Compatible Inputs APPLICATIONS Existing Multiplexer Applications (Both Fault-Protected and Nonfault-Protected) New Designs Requiring Multiplexer Functions GENERAL DESCRIPTION
2. ON channel turns off while fault exists. 3. Low RON. 4. Fast Switching Times. 5. Break-Before-Make Switching. Switches are guaranteed break-before-make so that input signals are protected against momentary shorting. 6. Trench Isolation Eliminates Latch-up. A dielectric trench separates the p and n-channel MOSFETs thereby preventing latch-up.
The ADG508F, ADG509F, and ADG528F are CMOS analog multiplexers, the ADG508F and ADG528F comprising eight single channels and the ADG509F comprising four differential channels. These multiplexers provide fault protection. Using a series n-channel, p-channel, n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. The multiplexer can withstand continuous overvoltage inputs from +55 V. During fault conditions, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current will flow. This protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources that drive the multiplexer. The ADG508F and ADG528F switch one of eight inputs to a common output as determined by the 3-bit binary address lines A0, A1, and A2. The ADG509F switches one of four differential inputs to a common differential output as determined by the 2-bit binary address lines A0 and A1. The ADG528F has on-chip address and control latches that facilitate microprocessor interfacing. An EN input on each device is used to enable or disable the device. When disabled, all channels are switched OFF.
1. Fault Protection. The ADG508F/ADG509F/ADG528F can withstand continuous voltage inputs from +55 V. When a fault occurs due to the power supplies being turned off, all the channels are turned off and only a leakage current of a few nanoamperes flows.
*N = Plastic DIP; P = Plastic Leaded Chip Carrier (PLCC); = 0.15" Small Outline IC (SOIC), = 0.3" Small Outline IC (SOIC).
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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2001Parameter ANALOG SWITCH Analog Signal Range RON
RON Drift RON Match LEAKAGE CURRENTS Source OFF Leakage IS (OFF) Drain OFF Leakage I D (OFF) ADG508F/ADG528F ADG509F Channel ON Leakage D, IS (ON) ADG508F/ADG528F ADG509F FAULT Output Leakage Current (With Overvoltage) Input Leakage Current (With Overvoltage) Input Leakage Current (With Power Supplies OFF) DIGITAL INPUTS Input High Voltage, V INH Input Low Voltage, VINL Input Current, IINL or IINH CIN, Digital Input Capacitance DYNAMIC CHARACTERISTICS 1 tTRANSITION tOPEN tON (EN, WR) tOFF (EN, RS) tSETT, Settling Time 0.01% ADG528F Only tW, Write Pulsewidth tS, Address, Enable Setup Time tH, Address, Enable Hold Time tRS, Reset Pulsewidth Charge Injection OFF Isolation CS (OFF) CD (OFF) ADG508F/ADG528F ADG509F POWER REQUIREMENTS IDD ISS
NOTES 1 Guaranteed by design, not subject to production test. Specifications subject to change without notice.0 V, Test Circuit 10 V, Test Circuit VD = VEN 0 V Test Circuit 6
= 35 pF; 10 V; Test Circuit = 35 pF; 5 V; Test Circuit = 35 pF; 5 V; Test Circuit = 35 pF; 5 V; Test Circuit = 35 pF; 5 V0 , CL= 1 nF; Test Circuit = 15 pF, = 100 kHz; 7 V rms; Test Circuit 13
ON Switch Retains Previous Switch Condition NONE (Address and Enable Latches Cleared) NONE
Figure 1 shows the timing sequence for latching the switch address and enable inputs. The latches are level sensitive; therefore, while WR is held low, the latches are transparent and the switches respond to the address and enable inputs. This input data is latched on the rising edge of WR.
Figure 2 shows the Reset Pulsewidth, tRS, and the Reset Turnoff Time, tOFF (RS). Note: All digital input signals rise and fall times are measured from = 20 ns.
|Related products with the same datasheet|
|Some Part number from the same manufacture Analog Devices|
|ADG508FTQ CMOS 4/8 Chaannel Analog Multiplexers|
|ADG509A Differential 4-Channel Analog Multiplexer (Superior DG509A Replacement)|
|ADG509ABQ CMOS 4/8 Chaannel Analog Multiplexers|
|ADG509AK Differential 4-Channel Analog Multiplexer (Superior DG509A Replacement)|
|ADG509AKP CMOS 4/8 Chaannel Analog Multiplexers|
|ADG509AT Differential 4-Channel Analog Multiplexer (Superior DG509A Replacement)|
|ADG509ATE CMOS 4/8 Chaannel Analog Multiplexers|
|ADG509F 4/8 Channel Fault-protected Analog Multiplexers|
|ADG509FBRW 4/8 Channel Fault-protected Analog Multiplexers|
|ADG509FTQ CMOS 4/8 Chaannel Analog Multiplexers|
|ADG511 ±5V, 30 Ohm, Quad SPST (4NC) Switch|
|ADG511ABR Lc2mos Precision 5 V/3 V Quad SPST Switches|
|ADG511ABR4 ±5V, 30 Ohm, Quad SPST (4NC) Switch|
|ADG511BN Lc2mos Precision 5 V/3 V Quad SPST Switches|
|ADG511T ±5V, 30 Ohm, Quad SPST (4NC) Switch|
|ADG511TQ4 Lc2mos Precision 5 V/3 V Quad SPST Switches|
|ADG512 ±5V, 30 Ohm, Quad SPST (4NC) Switch|
|ADG512ABR Lc2mos Precision 5 V/3 V Quad SPST Switches|
|ADG512ABR4 ±5V, 30 Ohm, Quad SPST (4NC) Switch|
AD204KN : Low Cost, Miniature ISOlation Amplifiers Powered Directly From a +15 V DC Supply
AD569J : 16-Bit Monotonic Voltage Output D/A Converter
AD7547LP : Lc2mos Parallel Loading Dual 12-bit DAC
AD7999 : 4-Channel, 8-Bit ADC With I2C-Compatible Interface In 8-Lead SOT-23 The AD7991/AD7995/AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C??-compatible interface. Each part operates from a single 2.7 V to 5.5 V power supply and features a 1 ?s conversion time. The track-an
AME5110BEEVADJY : 600ma / 1.2mhz PWM Buck Dc-dc Converter
ADSP-BF592 : Low Cost Blackfin with Optimized Peripheral Set for Industrial and General Purpose Applications The BF592 is the low cost entry point into the Blackfin portfolio of processors. With a 400 MHz core clock speed and a peripheral set including two SPORTís, a PPI, two SPIís, four general purpose counters and a factory-programmed Instruction ROM block containing the VDK RTOS and C-runtime libraries,
ADP1872ARMZ-0.6-R7 : Pmic - Voltage Regulator - Dc Dc Switching Controller Integrated Circuit (ics) Current Mode Cut Tape (CT) 1 2.75 V ~ 20 V; IC PWM BUCK CURRENT MODE 10MSOP Specifications: PWM Type: Current Mode ; Number of Outputs: 1 ; Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) ; Packaging: Cut Tape (CT) ; Duty Cycle: 84% ; Voltage - Supply: 2.75 V ~ 20 V ; Frequency - Max: 300kHz ; Buck: Yes ; Boost: No ; Flyback: No ; Inverting: No ; Doubler: No ; Divi
ADM6321AY43ARJZ-R7 : Pmic - Supervisor Integrated Circuit (ics) Simple Reset/Power-On Reset Tape & Reel (TR) 1; IC SUPERVISOR WATCHDOG SOT23-5 Specifications: Output: Open Drain, Push-Pull ; Reset: Active High/Active Low ; Package / Case: SC-74A, SOT-753 ; Packaging: Tape & Reel (TR) ; Number of Voltages Monitored: 1 ; Reset Timeout: 1 ms Minimum ; Type: Simple Reset/Power-On Reset ; Voltage - Threshold: 4.3V ; Operating Temperature: -