AS1539-BTSU

Analog To Digital Converters (ADC) Overview

The AS1539-BTSU is an 8-channel, 10-bit analog-to-digital converter (ADC) from ams-OSRAM USA INC. It features a serial I²C interface and operates on a single supply voltage ranging from 2.7V to 5.25V. The device integrates a sample-and-hold amplifier, an internal asynchronous clock, and a 2.5V internal reference. It supports high-speed I²C communication at up to 3.4MHz and achieves a sampling rate of 50kSPS with no missing codes. Designed for low-power applications, it offers full shutdown current below 1.5µA. The component is available in TSSOP-16 and TQFN 4x4 16-pin packages.

Analog To Digital Converters (ADC) Feature Summary

• 8-channel multiplexer with 10-bit resolution and 50kSPS throughput
• High-speed I²C interface supporting 3.4MHz clock frequency
• Integrated 2.5V internal reference with external reference input option
• Low power consumption with <1.5µA full shutdown current

Analog To Digital Converters (ADC) Applications

• Voltage-supply monitoring systems
• Isolated data acquisition circuits
• Transducer interfaces
• Battery-operated portable devices
• Remote data acquisition nodes

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix BTSU against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with I²C bus voltage levels and check for RoHS compliance documentation prior to integration. Confirm lead finish details for soldering process alignment.

Analog To Digital Converters (ADC) Selection Notes

Select the AS1539 variant for 8-channel input requirements; use AS1541 for 4-channel configurations. Consider the internal 2.5V reference for standard applications or external references for full dynamic range with higher supply voltages. Evaluate power-down modes to optimize energy consumption in battery-powered designs.

Analog To Digital Converters (ADC) Part Context

The AS1539/AS1541 series represents a family of low-power, successive approximation register (SAR) ADCs. These devices utilize capacitive redistribution architecture for inherent sample-and-hold functionality. They are designed for remote sensing applications where proximity to the input source and isolation capabilities are critical.

Analog To Digital Converters (ADC) Replacement Considerations

The AS1541 serves as a functional substitute within the same family for applications requiring only 4 analog input channels instead of 8. Both share identical electrical characteristics, interface protocols, and pinout structures for common pins.