ADM8660ARZ-REEL

Overview

The ADM8660ARZ-REEL is a charge-pumped inverter integrated circuit manufactured by Analog Devices Inc. It operates within an input voltage range of 1.5 V to 7 V, generating negative output voltages from -1.5 V to -7 V. The device delivers an output current of 100 mA with a static current consumption of 600 µA. It features a shutdown function and supports selectable switching frequencies between 25 kHz and 120 kHz. Packaged in an SOIC-8 surface-mount format on a reel, it functions as a DC-DC switching regulator suitable for single-supply systems requiring negative rails.

Feature Summary

• Inverts positive input supply voltage to generate a corresponding negative output rail
• Integrates a shutdown pin to disable operation and minimize quiescent current
• Supports selectable internal oscillator frequencies to optimize external capacitor sizing

Applications

• Generating negative power supplies for operational amplifiers in single-supply systems
• Powering RS-232 interface circuits requiring dual polarity voltages
• Biasing analog-to-digital converters that require negative reference inputs

Procurement Notes

Verify the specific suffix REEL against the manufacturer's official documentation to confirm packaging quantity and tape specifications. Ensure the component matches the required operating temperature range and package dimensions for the target PCB layout. Cross-reference the datasheet revision to confirm electrical characteristics align with system requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is needed to create a negative voltage rail from a low-voltage positive source. The inclusion of a shutdown feature makes it suitable for battery-powered applications where power conservation is critical. Consider the trade-off between switching frequency and external capacitance size based on available board space and cost constraints.

Part Context

This part belongs to the ADM8660 series of CMOS charge pump voltage converters. It serves as a direct replacement for legacy devices like the MAX660 and ICL7660, offering improved performance and lower static current. The series is designed for applications requiring efficient voltage inversion without the complexity of inductor-based switching regulators.

Replacement Considerations

Public confirmed substitute part numbers include ADM660ARZ and ADM8660ARZ. Verify functional equivalence regarding the presence or absence of the shutdown pin when substituting with the ADM660 variant.