ADM101EARM-REEL

Overview

The ADM101EARM-REEL is a single-channel RS-232 transceiver from the Analog Devices Craft Port series, designed for portable applications. It operates from a single 5 V supply and integrates an on-chip DC-DC converter to generate a negative voltage, eliminating the need for external negative rails. The device supports transmission rates up to 460 kbit/s with ±4.2 V output swings. Key electrical parameters include a typical quiescent current of 500 μA and an ultralow power shutdown mode consuming less than 1 μA. It features overvoltage protection on receiver inputs exceeding ±30 V and ESD protection greater than 15 kV. The component is housed in a 10-lead MSOP package.

Feature Summary

• Integrates an internal charge pump DC-DC converter to generate negative supply voltages from a single positive source.
• Includes a dedicated shutdown input that disables the charge pump and transmitter while keeping the receiver active.
• Provides high-level overvoltage tolerance on receiver inputs and robust electrostatic discharge protection on all I/O pins.

Applications

• Mobile telephones
• Palmtop computers
• Personal digital assistants (PDAs)
• Portable instrumentation
• GPS receivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging format and compliance status. The REEL suffix indicates tape-and-reel packaging. Confirm RoHS compliance requirements by checking for the Z suffix if lead-free components are mandatory for the assembly process. Ensure the automotive qualification suffix W is not required unless the application demands specific reliability standards.

Selection Notes

Select this component when space constraints and low power consumption are critical design factors. The integrated charge pump simplifies the bill of materials by removing the need for dual-rail power supplies or external inverters. Verify that the 460 kbit/s data rate meets the system communication requirements. Consider the 10-lead MSOP package dimensions for PCB layout compatibility and thermal management within the target enclosure.

Part Context

This part belongs to the ADM101E series within the Analog Devices Craft Port family. The series focuses on miniaturized serial communication solutions for battery-operated devices. The base model provides the core functionality, while suffixes denote variations in packaging quantity and environmental compliance. This specific variant utilizes the standard industrial temperature range and commercial-grade manufacturing processes.

Replacement Considerations

The ADM101EARMZ-REEL serves as a direct replacement, differing only in RoHS compliance status. The ADM101EARMZ-REEL7 offers identical electrical characteristics but utilizes a different reel configuration. Designers should verify pinout compatibility and ensure that any substitute maintains the same single-supply operation and shutdown logic levels.