ADG2128BCPZ-REEL7

Overview

The ADG2128BCPZ-REEL7 is an I²C-compatible CMOS analog crosspoint switch array featuring a configuration of eight columns by twelve rows, providing a total of 96 independent bidirectional signal channels. The device supports standard, fast, and high-speed (3.4 MHz) I²C interfaces for control. It operates with dual ±5 V or single +12 V supplies, ensuring full specification across the industrial temperature range of −40°C to +85°C. Key electrical parameters include a maximum on-resistance of 35 Ω, low quiescent current below 20 µA, and a bandwidth up to 300 MHz. The component is housed in a compact 32-lead LFCSP package measuring 5 mm × 5 mm.

Feature Summary

• Supports simultaneous update of multiple switches via the LDSW command for synchronous signal transmission.
• Features double-buffered input logic and hardware reset capability to ensure safe power-on states.
• Allows flexible configuration of rows and columns as either inputs or outputs.
• Includes readback functionality to verify switch status during system debugging.

Applications

• AV switching in television systems
• Automotive infotainment routing
• Test equipment and instrumentation signal paths
• KVM switching matrices

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm the exact operating temperature range and I²C speed capabilities. Ensure the supply chain documentation matches the required automotive qualification standards if applicable. Confirm that the reel packaging aligns with automated assembly requirements.

Selection Notes

Select this component when a high-density matrix of 96 bidirectional switches is required within a small footprint. Consider the B version for standard industrial applications requiring operation between −40°C and +85°C. Evaluate the need for high-speed I²C communication, noting that only specific model variants support the 3.4 MHz interface option.

Part Context

This part belongs to the ADG2128 series of analog crosspoint switches manufactured by Analog Devices. The series is designed for applications requiring flexible signal routing in compact spaces. The BC designation indicates the specific temperature grade and package variant suitable for industrial environments.

Replacement Considerations

Direct replacements must match the 8x12 matrix size and I²C control interface. Verify pin compatibility with the 32-lead LFCSP package. Check if alternative models support the same voltage ranges and bandwidth specifications.

FAQ

How are the 96 switches addressed?

Each switch is addressed individually through the I²C-compatible serial interface using a 24-bit write command that specifies the row and column coordinates.

What is the function of the LDSW bit?

The LDSW bit enables simultaneous updates of multiple switches, allowing them to change state synchronously rather than sequentially during register writes.

Can the rows and columns be configured as both inputs and outputs?

Yes, the array is fully bidirectional, allowing any X line or Y line to be configured as either an input or an output depending on the application requirements.