ADG1438BCPZ-REEL7

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG1438BCPZ-REEL7 is an iCMOS analog matrix switch featuring a serially controlled 3-wire interface. It provides eight independent channels in a 20-lead LFCSP package. The device supports ±15 V, +12 V, and ±5 V supply configurations with rail-to-rail signal handling. Key electrical parameters include a maximum on-resistance of 11.5 Ω at 25°C, off-isolation of -70 dB, and a bandwidth of 82 MHz. It operates within a temperature range of -40°C to +125°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Serially controlled 3-wire interface compatible with SPI, QSPI, MICROWIRE, and DSP standards
• iCMOS construction for ultralow power dissipation suitable for battery-powered systems
• Break-before-make switching action prevents momentary shorting during channel transitions

Analog Switches, Multiplexers, Demultiplexers Applications

• Relay replacement
• Audio and video routing
• Automatic test equipment
• Data acquisition systems
• Temperature measurement systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix REEL7 against official Analog Devices documentation to confirm reel packaging specifications. Ensure the component matches the LFCSP-20 package type and industrial temperature grade (B version) required for the design. Cross-reference the datasheet revision B details to validate all electrical characteristics before integration.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a single 8-channel multiplexer configuration is required rather than the dual 4-channel ADG1439 variant. Consider the 20-lead LFCSP package for space-constrained designs requiring exposed paddle thermal management. Verify that the 3-wire serial interface aligns with the available microcontroller or DSP resources in the system architecture.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the ADG1438/ADG1439 family of iCMOS multiplexers manufactured by Analog Devices Inc. It serves as the 8-channel counterpart to the ADG1439 dual 4-channel switch. The series utilizes advanced CMOS technology to achieve low on-resistance and high isolation levels across various supply voltage ranges.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG1439BCPZ-REEL7 offers identical electrical performance but features a dual 4-channel configuration instead of a single 8-channel layout. Designers must evaluate pin compatibility and channel count requirements when substituting between these two variants.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the logic voltage range for the digital inputs?

The logic power supply input (VL) operates from 2.7 V to 5.5 V, making the inputs compatible with 3 V logic families.

How does the device handle channel switching to prevent glitches?

All channels exhibit break-before-make switching action, which prevents momentary shorting when switching between different input channels.

Can multiple ADG1438 devices be connected together?

Yes, the SDO output enables daisy-chaining of multiple devices using the serial interface.