ADM230LAQ

Overview

The ADM230LAQ is a low-power, 5 V-powered CMOS RS-232 transceiver manufactured by Analog Devices Inc. It integrates charge pump circuitry to generate the necessary voltages for RS-232 signal levels from a single 5 V supply. The device features two drivers and two receivers, supporting data rates up to 120 kbps. It operates within an extended industrial temperature range of -40°C to +85°C and is housed in a 16-pin LQFP package. Key electrical specifications include a typical no-load supply current of 7 mA and output voltages ranging from ±5 V to ±9 V.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors typically required for voltage generation
• Low power consumption design suitable for battery-operated or power-sensitive applications
• Robust ESD protection on all pins ensures reliability in harsh environments
• Compliance with TIA/EIA-232-F and ITU-T V.28 standards guarantees interoperability

Applications

• Industrial control systems requiring serial communication
• Portable instrumentation and medical devices
• Modem and fax machine interfaces
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the specific suffix 'LAQ' against the official Analog Devices datasheet to confirm the exact package type and temperature grade. Ensure that the ordering information matches the current product lifecycle status. Cross-reference the manufacturer's part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance requirements if applicable to your manufacturing process.

Selection Notes

Select this component when a single 5 V supply is available and external charge pump capacitors must be minimized. It is appropriate for designs requiring moderate data rates up to 120 kbps. Consider thermal performance if operating near the upper limit of the specified temperature range. Compare pin compatibility with existing designs using similar RS-232 transceivers to ensure seamless integration without board redesign.

Part Context

The ADM230 series belongs to Analog Devices' family of RS-232 transceivers designed for low-power applications. These devices are engineered to replace older bipolar RS-232 drivers that require higher supply currents. The LAQ variant specifically denotes the lead-free, halogen-free LQFP package option. This series supports standard RS-232 protocols while reducing system complexity through integrated voltage generation.

Replacement Considerations

Direct replacements may include the ADM232 or ADM233 series, provided pinout compatibility is verified. Check for differences in ESD protection levels and data rate capabilities. Ensure that any substitute component maintains the same 5 V supply requirement and package dimensions for mechanical fit.