LTC1298CN8#PBF

Analog To Digital Converters (ADC) Overview

The LTC1298CN8#PBF is a micropower, 12-bit successive approximation sampling analog-to-digital converter (ADC) housed in an 8-lead plastic DIP package. It features a software-selectable two-channel multiplexer and operates on a single 4.5V to 5.5V supply. The device draws approximately 360µA during conversion at 200kHz clock frequency and powers down to a typical 1nA when inactive. It includes an on-chip sample-and-hold circuit and communicates via a synchronous serial interface compatible with SPI and Microwire protocols.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with guaranteed ±3/4 LSB maximum differential nonlinearity (DNL)
• Two-channel input multiplexer for single-ended or differential measurements
• Micropower consumption: ~360µA active, 1nA shutdown current
• Single 5V supply operation (4.5V to 5.5V range)

Analog To Digital Converters (ADC) Applications

• Battery-operated systems
• Remote data acquisition
• Battery monitoring
• Temperature measurement

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix CN8 corresponds to the commercial temperature range (0°C to 70°C) and PDIP-8 package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure supply voltage constraints are strictly maintained between 4.5V and 5.5V to guarantee correct output codes.

Analog To Digital Converters (ADC) Selection Notes

Select this component over the LTC1286 variant when a two-channel multiplexer is required, as the LTC1286 offers only a single differential input. Note that the LTC1298 has a stricter supply voltage limit of 5.5V maximum compared to the LTC1286's 9V limit. Verify that the system clock frequency does not exceed 200kHz to maintain specified performance metrics.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1286/LTC1298 family of micropower sampling ADCs. While sharing identical core architecture and 12-bit SAR technology, the LTC1298 distinguishes itself by integrating a 2-channel MUX and tying the reference input to the supply pin. This design choice increases active current consumption slightly but simplifies external reference requirements for single-supply applications.

Analog To Digital Converters (ADC) Replacement Considerations

LTC1286CN8#PBF serves as a functional substitute if only a single differential input channel is needed and the higher 9V supply capability is desired. Both parts share the same 8-pin DIP footprint and serial interface timing.