LTC1594CS#PBF

Analog To Digital Converters (ADC) Overview

The LTC1594CS#PBF is a micropower, 12-bit sampling Analog-to-Digital Converter (ADC) featuring a 4-channel analog multiplexer. It operates on a single 5V supply with typical supply current of 320μA during conversion and auto-shutdown to 1nA between conversions. The device utilizes a switched-capacitor successive approximation architecture with an internal sample-and-hold. Serial data transfer occurs via a synchronous interface compatible with QSPI, SPI, and MICROWIRE protocols. Key electrical specifications include a maximum differential nonlinearity (DNL) of ±3/4 LSB, integral linearity error of ±3 LSB, and a maximum sampling rate of 16.8ksps.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with guaranteed ±3/4 LSB max DNL and ±3 LSB integral linearity
• Integrated 4-channel analog multiplexer with separate MUXOUT and ADCIN pins
• Micropower consumption: 320μA typical active current, 1nA shutdown current
• Single 5V supply operation with serial I/O compatible with standard microprocessor interfaces

Analog To Digital Converters (ADC) Applications

• Battery-operated systems requiring low power consumption
• Remote data acquisition nodes
• Isolated data acquisition systems
• Pen screen digitizing applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the #PBF suffix indicates lead-free compliance and RoHS conformity per manufacturer standards. Confirm the CS suffix denotes the commercial temperature range (0°C to +70°C). Ensure the 16-pin SO package matches the PCB footprint requirements. Check for specific tape and reel availability if automated assembly is required, noting that #TR adds tape and reel packaging.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1594CS#PBF when a 4-channel input multiplexing capability is required alongside 12-bit precision. This component is suitable for applications where power efficiency is critical due to its automatic shutdown feature. Compare against the LTC1598 if 8 channels are needed. Ensure the system clock frequency supports the desired sampling rate, keeping in mind leakage current constraints at higher temperatures which may require minimum clock frequencies.

Analog To Digital Converters (ADC) Part Context

The LTC1594 is part of the LTC1594/LTC1598 family of micropower sampling ADCs. The LTC1594 variant specifically integrates a 4-channel multiplexer, whereas the LTC1598 provides 8 channels. Both share identical ADC core performance but differ in package type and channel count. The CS grade specifies commercial operating temperature limits, distinguishing it from the IS industrial grade variant.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications if considering alternative manufacturers' devices.