ADG728BRUZ-REEL

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG728BRUZ-REEL is an 8-channel CMOS analog matrix switch featuring a 2-wire serial interface compatible with the I²C standard. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and is housed in a 16-lead TSSOP package. The device provides a typical on-resistance of 2.5 Ω at 5 V, with a maximum of 4.5 Ω. It supports a -3 dB bandwidth of 65 MHz and exhibits low charge injection of ±3 pC. The part ensures break-before-make switching action and includes two external address pins for bus configuration.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Serially controlled via a 2-wire I²C-compatible interface allowing independent channel control.
• Guaranteed break-before-make switching action prevents momentary shorting during transitions.
• Input signal range extends fully to the power supply rails for wide dynamic operation.
• Supports multiple devices on a single bus through configurable address pins.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring signal routing
• Programmable gain amplifier input selection
• Test and measurement equipment multiplexing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging type and RoHS compliance status. Ensure the selected variant matches the required temperature range and pinout configuration for the target application design.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when an 8-channel matrix switch with serial control is required. Verify that the system logic levels are compatible with the specified input voltage thresholds. Confirm that the single-supply operation range meets the circuit's power requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the ADG728/ADG729 family of low-voltage CMOS matrix switches. It shares functional similarities with other Analog Devices serial switches but is distinct in its 8-channel configuration and specific I²C addressing scheme compared to parallel or SPI-controlled alternatives.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG728BRU and ADG728BRU-REEL are functionally equivalent parts within the same package family. Substitution requires verifying that the alternative packaging format does not impact thermal performance or mechanical fit in the assembly.

Analog Switches, Multiplexers, Demultiplexers FAQ

How is the slave address configured?

The five most significant bits of the 7-bit slave address are fixed (10011 for ADG728). The two least significant bits are determined by the logic states applied to the external A0 and A1 pins.

What happens to the switches upon power-up?

On power-up, all switches default to the OFF condition, and the internal shift register is initialized to contain all zeros until a valid write operation occurs.

Can multiple devices share the same bus?

Yes, up to four ADG728 devices can be connected to a single bus by setting different combinations of logic levels on the A0 and A1 address pins.