LTC1594IS#PBF

Analog To Digital Converters (ADC) Overview

The LTC1594IS#PBF is a micropower, 12-bit successive approximation analog-to-digital converter featuring a 4-channel multiplexer. It operates on a single 5V supply (4.5V to 5.5V) with a typical sampling rate of 16.8ksps and consumes 320μA during conversion, dropping to 1nA in shutdown mode. The device utilizes a serial interface compatible with QSPI, SPI, and MICROWIRE protocols. Key electrical specifications include ±3 LSB integral nonlinearity, ±3/4 LSB differential nonlinearity, and an 80 dB spurious-free dynamic range at 1kHz input.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 4-channel analog multiplexer
• Micropower consumption: 320μA active, 1nA shutdown
• Serial I/O compatible with standard microprocessor interfaces
• Guaranteed ±3/4LSB max DNL and ±3 LSB INL

Analog To Digital Converters (ADC) Applications

• Battery-operated systems
• Remote data acquisition
• Isolated data acquisition
• Temperature measurement
• Pen screen digitizing

Analog To Digital Converters (ADC) Procurement Notes

Verify the #PBF suffix indicates lead-free compliance and RoHS adherence per manufacturer standards. Confirm the IS suffix specifies the industrial temperature range of -40°C to +85°C. Ensure the 16-pin SO package matches the PCB footprint requirements. Check for specific lot traceability or testing documentation if required by quality management systems.

Analog To Digital Converters (ADC) Selection Notes

Select this component for low-power applications requiring multiple analog inputs without external multiplexers. The 16.8ksps sampling rate suits slow-varying signals like temperature or pressure. Consider the separate MUXOUT and ADCIN pins for integrating external signal conditioning circuits. Verify that the serial interface timing aligns with the host microcontroller's capabilities.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1594/LTC1598 family of micropower sampling ADCs. The LTC1594 variant provides 4 channels in a 16-lead SO package, while the LTC1598 offers 8 channels in a 24-lead SSOP. Both share identical core ADC performance and power characteristics, differing primarily in channel count and physical package dimensions.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.