AD8170 2 Channel Buffered, 250MHz, 10 ns Multiplexer w/Amplifier

The AD8170(2:1) and AD8174(4:1) are very high speed buffered multiplexers. These multiplexers offer an internal current feedback output amplifier whose gain can be programmed via external resistors and is capable of delivering 50 mA of output current. They offer -3dB signal bandwidth of 250 MHz and slew rate of greater than than 1000 V/µs. Additionally, the AD8170 and AD8174 have excellent video specifications with low differential gain and differential phase error of 0.02% and 0.05° and 0.1 dB flatness out to 85 MHz. With a low 70 dB of crosstalk and better than 82 dB isolation, these devices are useful in many high speed applications. These are low power devices consuming only 9.7 mA from a ±5 V supply.

The AD8174 offers a high speed disable feature allowing the output to be put into a high impedance state for cascading stages so that the off channels do not load the output bus. Additionally, the AD8174 can be shut down (SD) when not in use to minimize power consumption (IS = 1.5 mA). These products will be offered in 8-lead and 14-lead PDIP and SOIC packages.

An evaluation board is available for this product and may be ordered using the following product number: AD8170-EB and AD8174-EB. Schematic and layout for this evaluation board is contained in the product datasheet.

Features and Benefits

Fully Buffered Inputs and Outputs

Fast Channel Switching: 10 ns

Internal Current Feedback Output Amplifier
High Output Drive: 50 mA
Flexible Gain Setting via External Resistor(s)

High Speed
250 MHz Bandwidth, G = +2
1000 V/µs Slew Rate
Fast Settling Time of 15 ns to 0.1%

Low Power: < 10 mA

Excellent Video Specifications

(RL = 150 O, G = +2)

Gain Flatness of 0.1 dB Beyond 80 MHz
0.02% Differential Gain Error
0.05° Differential Phase Error

Low Crosstalk of -78 dB @ 5 MHz

High Disable Isolation of -88 dB @ 5 MHz

High Shutdown Isolation of -92 dB @ 5 MHz

Low Cost

Switches & Multiplexers

Buffered Analog Crosspoint Switches

AD8170 SPICE Macro-Model

Data Sheets

Document	note
AD8170/AD8174: 250 MHz, 10 ns Switching Multiplexers w/Amplifier Data Sheet (Rev. 0)	PDF 474 kB

Application Notes

Document	note
AN-1024: How to Calculate the Settling Time and Sampling Rate of a Multiplexer (Rev. 0)	PDF 210 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8170ANZ Last Time Buy	8 ld PDIP	OTH 50	-40 to 85C	3	2.55	Y
AD8170AR Production	8 ld SOIC	OTH 98	-40 to 85C	3.25	2.76	N
AD8170AR-REEL7 Production	8 ld SOIC	REEL 750	-40 to 85C	3.25	2.76	N
AD8170ARZ Production	8 ld SOIC	OTH 98	-40 to 85C	2.82	2.4	Y
AD8170ARZ-R7 Production	8 ld SOIC	REEL 750	-40 to 85C	2.82	2.4	Y
AD8170ARZ-RL Production	8 ld SOIC	REEL 2500	-40 to 85C	2.82	2.4	Y