LTC2472CMS#PBF

Analog To Digital Converters (ADC) Overview

The LTC2472CMS#PBF is a 16-bit delta-sigma analog-to-digital converter (ADC) from Analog Devices, housed in a 12-lead plastic MSOP package. It features a fully differential input range of ±VREF and an integrated precision reference with 1.25V nominal output. The device operates on a single 2.7V to 5.5V supply and communicates via an SPI interface. Key electrical specifications include a selectable output rate of 208sps or 833sps, a typical supply current of 3.5mA during conversion, and a maximum sleep current of 2µA. The component supports a wide operating temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-Bit Resolution with Integrated Precision Reference
• Differential Input Configuration (±VREF Range)
• Selectable Output Rates: 208sps or 833sps
• Low Power Consumption: 3.5mA Typical, 2µA Max Sleep

Analog To Digital Converters (ADC) Applications

• System Monitoring
• Environmental Monitoring
• Direct Temperature Measurements
• Instrumentation
• Industrial Process Control

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix CMS indicates the MSOP-12 package and C-grade temperature range (0°C to 70°C). Confirm that the #PBF designation ensures lead-free compliance. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2472 over the LTC2470 when a differential input configuration is required for noise rejection. Ensure the application voltage range fits within the 2.7V to 5.5V supply limits. Consider the 2µA sleep current for battery-powered systems requiring extended standby periods between conversions.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2470/LTC2472 family of low-power, high-precision ADCs. The LTC2472 variant specifically provides differential inputs, whereas the LTC2470 offers single-ended inputs. Both share identical pinouts, software compatibility, and internal reference characteristics, differing primarily in input topology.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and software compatibility if considering alternative manufacturers' 16-bit differential ADCs.

Analog To Digital Converters (ADC) FAQ

What is the input voltage range for the LTC2472?

The LTC2472 accepts a fully differential input voltage range of ±VREF, where VREF is the internal reference voltage of approximately 1.25V.

How does the device handle power consumption after conversion?

After a single conversion, the ADC automatically powers down. If configured via the SDI pin, the internal reference can also be powered down, reducing the total supply current to a maximum of 2µA in sleep mode.

What is the function of the SDI pin?

The SDI pin is used to program the output data rate (208sps or 833sps) and enable/disable the sleep mode for the internal reference. It can also be tied directly to GND or VDD to fix these settings.