AS1539-BTST

Analog To Digital Converters (ADC) Overview

The AS1539-BTST is a single-supply, low-power 10-bit Analog-to-Digital Converter (ADC) manufactured by ams-OSRAM USA INC. It features an 8-channel multiplexer and a serial I²C interface supporting high-speed operation up to 3.4MHz. The device integrates a sample-and-hold amplifier, an internal asynchronous clock, and a 2.5V internal reference. Operating within a supply voltage range of 2.7V to 5.25V, it delivers a throughput frequency of 50kSPS with no missing codes. The component is housed in a TSSOP-16 package.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit resolution with 8-channel analog multiplexer
• High-speed I²C interface operating at 3.4MHz
• Integrated 2.5V internal reference and sample-and-hold amplifier
• 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 BTST corresponds to the TSSOP-16 package variant as defined in the official datasheet. Confirm RoHS compliance status and check for End-of-Life (EOL) notifications or Product Change Notices (PCN) regarding availability. Ensure the ordering code matches the required pin configuration and packaging type before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the AS1539-BTST when an 8-channel input multiplexing capability is required alongside 10-bit precision. The internal 2.5V reference suits applications where the input signal range does not exceed the reference voltage. For inputs requiring full dynamic range up to VDD, an external reference must be utilized. Ensure the system design accommodates the 3.4MHz I²C bus speed requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the AS1539/AS1541 family of 10-bit ADCs. The AS1539 variant provides 8 analog input channels, whereas the AS1541 variant offers 4 channels. Both share identical electrical characteristics, interface protocols, and core architecture, differing primarily in channel count and pin assignment configurations.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other 10-bit I²C ADCs with similar channel counts and sampling rates if this specific part is unavailable.