LTC1298CS8#PBF

Analog To Digital Converters (ADC) Overview

The LTC1298CS8#PBF is a micropower, 12-bit successive approximation sampling analog-to-digital converter (ADC) housed in an 8-lead plastic SOIC package. It features a software-selectable two-channel multiplexer and operates on a single 4.5V to 5.5V supply. The device typically draws 350µA at 11.1 ksps and powers down to 1nA when inactive. It includes an on-chip sample-and-hold, serial interface compatible with SPI/Microwire, and guarantees ±3/4 LSB max DNL. Key electrical parameters include a maximum sampling rate of 11.1 ksps, 60ms conversion time, and operation within the commercial temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with guaranteed ±3/4 LSB maximum differential nonlinearity (DNL).
• Two-channel input multiplexer allowing single-ended or differential measurements.
• Micropower consumption: 350µA typical during conversion, 1nA typical in shutdown.
• Serial interface compatible with standard microprocessor protocols (SPI, Microwire).

Analog To Digital Converters (ADC) Applications

• Battery-operated systems requiring low power consumption.
• Remote data acquisition nodes.
• Battery monitoring circuits.
• Temperature measurement systems.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix CS8 indicates the commercial temperature grade (0°C to 70°C) and SOIC-8 package. Confirm RoHS compliance status via the manufacturer's current documentation. Ensure the supply voltage remains within the 4.5V to 5.5V range, as this model differs from the LTC1286 which supports up to 9V.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1298 over the LTC1286 when a two-channel multiplexer is required, noting the tighter 4.5V–5.5V supply constraint. For applications needing a wider supply range (up to 9V) with a single differential input, consider the LTC1286. Verify that the external clock frequency does not exceed 200kHz for proper operation at 5V.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1286/LTC1298 family of micropower 12-bit ADCs. While sharing the same SAR architecture and packaging, the LTC1298 is distinguished by its integrated 2-channel MUX and fixed VCC/VREF pin configuration, limiting its supply voltage compared to the LTC1286 variant.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes are not available in the provided source material. Designers should verify pin compatibility and electrical specifications if considering alternative SAR ADCs from other manufacturers.