ADG751BRT-REEL

Overview

The ADG751BRT-REEL is a CMOS, low voltage RF/Video SPST switch manufactured by Analog Devices Inc. It operates on a single supply ranging from +1.8 V to +5.5 V and features a T-switch configuration for high off isolation of -75 dB at 100 MHz. The device provides a -3 dB signal bandwidth of 300 MHz with typical on-resistance of 15 Ω. Switching times are typically 9 ns (tON) and 3 ns (tOFF). Power consumption is typically less than 0.01 mW. It is housed in a 6-lead SOT-23 package.

Feature Summary

• T-switch configuration ensures high off isolation while maintaining good frequency response in the ON condition.
• Fully bidirectional switch capable of handling signals up to and including the supply rails.
• Designed on a submicron process providing low power dissipation, high switching speed, and low on resistance.
• Compatible with TTL and CMOS logic levels.

Applications

• Audio and Video Switching
• RF Switching
• Networking Applications
• Battery Powered Systems
• Communication Systems

Procurement Notes

Verify the specific grade (A or B) required for your application, as leakage and on-resistance specifications vary between grades. Confirm that the 6-lead SOT-23 package aligns with your PCB footprint constraints. Ensure proper ESD precautions are taken during handling due to the sensitivity of the CMOS structure. Check for RoHS compliance if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a single-pole single-throw switch with high isolation and wide bandwidth is needed. Consider the A Grade for lower on-resistance and the B Grade for potentially different leakage characteristics depending on the operating temperature range. Ensure the supply voltage falls within the 1.8 V to 5.5 V range. Verify that the digital input voltage levels match your system's logic family requirements.

Part Context

The ADG751 is part of Analog Devices' low voltage CMOS switch family. It is designed for applications requiring fast switching and low power consumption. The BRT suffix indicates the 6-lead SOT-23 package option. This component serves as a relay replacement and is suitable for sample-and-hold systems where low charge injection is beneficial.

Replacement Considerations

Direct substitutes include other ADG751 variants such as ADG751ARTZ-REEL7 or ADG751ARMZ. Cross-brand replacements should be evaluated based on pin compatibility, on-resistance, and bandwidth specifications. Ensure any substitute maintains the T-switch architecture for comparable off-isolation performance.

FAQ

What is the maximum continuous current the ADG751 can handle?

The ADG751 supports a continuous current of 30 mA through the source or drain terminals.

How does the T-switch configuration benefit the ADG751?

The T-switch configuration improves off-isolation by providing a signal path to ground for unwanted signals through the shunt switch when the series switches are open.

Is the ADG751 suitable for battery-powered applications?

Yes, its low power consumption (typically <0.01 mW) and operation down to 1.8 V make it ideal for battery-powered portable instruments.