V I S H AY I N T E R T E C H N O L O G Y, I N C . Precision Analog IC - High-precision, Low-noise Signal Switching I INNOVAT AND TEC O L OGY DG508B/DG509B Analog Multiplexers N HN PRECISION ANALOG IC O 19 62-2012 Best-in-Class ±15-V, High-precision, 8-Channel/Dual 4-Channel Analog Multiplexers KEY BENEFITS The 8-channel DG508B and dual 4-channel DG509B analog multiplexers achieve high-precision, low-noise signal switching in data acquisition, industrial process control, test and measurement, and medical systems. FEATURES • • • • Operate with single or dual power supply V+ to V- analog signal swing range 44-V power supply maximum rating Extended operating temperature range: − 40 °C to + 125 °C • Low leakage typically less than 10 pA APPLICATIONS • • • • • • • • • • Low charge injection: Q = 2 pC Low power: ISUPPLY = 10 μA /typical TTL-compatible logic > 250-mA latch-up current per JESD78 Available in SOIC-16 and TSSOP-16 packages Superior alternative to ADG508A, DG508A, HI-508, ADG509A, DG509A, HI-509 Data acquisition systems Audio and video signal routing ATE systems Medical instrumentation RESOURCES • DG508B/DG509B datasheet: http://www.vishay.com/doc?64821 • Analog Switches and Multiplexers: http://www.vishay.com/analog-switches/ • For technical questions, contact [email protected] One of the World’s Largest Manufacturers of Discrete Semiconductors and Passive Components PRODUCT SHEET 1/2 VMN-PT0176-1203 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 V I S H AY I N T E R T E C H N O L O G Y, I N C . Precision Analog IC - High-precision, Low-noise Signal Switching I INNOVAT O L OGY DG508B/DG509B Analog Multiplexers AND TEC N HN PRECISION ANALOG IC O 19 62-2012 ±15-V, High Precision 8-Channel/Dual 4-Channel Analog Multiplexers DESCRIPTION IMPACT OF CHARGE INJECTION The 8-channel DG508B and dual 4-channel DG509B CMOS analog multiplexers provide an extended maximum voltage rating to 44 V, with rail-to-rail analog capability, and can be operated in either a dual or single supply configuration. Charge injection is quite likely one of the most critical parameters of any analog switch or multiplexer. Fabricated on an enhanced SG-II CMOS process, channel offleakage is typically less than 3 pA in a wide analog signal range. The source-off parasitic capacitance is minimized to less than 3 pF and charge injection is less than 2 pC. The result is precise, low-glitch switching performance. CMOS analog switches and MUX’s have as their switching element an n-channel MOSFET in parallel with a p-channel MOSFET. As a consequence of parasitic capacitances, Cgs and Cgd, together with the fast transition of Gate voltage that actuates the MOSFETs, a charge is coupled to the switching element, resulting in voltage spikes. The charge exits the switch or MUX at both its input (S) and output (D). Ultra-low power consumption, typically 10 μA at 25 °C with a guaranteed maximum of 600 μA over temperature, makes the DG508B and DG509B well suited for portable, battery-operated applications. The magnitude of these spikes is dependent on several factors: the speed (frequency) of the gate voltage pulse; and the size of the parasitic gate-to-channel capacitances, and of course the load capacitance, CL. The enhanced SG-II CMOS process also allows the DG508B and DG509B to achieve a –3dB bandwidth greater than 200 MHz with crosstalk and off-Isolation of - 40 dB at 100 MHz, making a versatile fit for a wide range of analog signal applications, including video. The DG508B and DG509B provide superior low charge injection performance. A specially designed evaluation board (see circuit below) is available to measure the charge injection impact when the channel is ON and OFF. CHARGE INJECTION TEST CIRCUIT TYPICAL DATA ACQUISITION APPLICATION CHARGE INJECTION VS. ANALOG VOLTAGE PRODUCT SHEET KEY PERFORMANCE PARAMETERS Parameter DG508B / DG509B Max supply operating range (-V to +V) 44 V On-resistance @ ± 15 V 180 Ω Leackage current + 1 nA /max Transition time 145 ns /type Charge Injection 2 pC 2/2 Source off capacitance < 3 pF Drain off capacitance 13 pF / 8 pF Drain on capacitance 18 pF / 11 pF Total harmonic distortion 0.04 % Temperature range - 40 ˚C to + 125 ˚C Package option SOIC-16 & TSSOP-16 VMN-PT0176-1203 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000