LTC2451CDDB#TRMPBF

Analog To Digital Converters (ADC) Overview

The LTC2451CDDB#TRMPBF is a 16-bit delta-sigma analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features an I²C interface and operates on a single supply voltage ranging from 2.7V to 5.5V. The device accepts a single-ended analog input with a range from VREF– to VREF+. Key electrical specifications include 0.02 LSB RMS noise, 2 LSB integral nonlinearity (INL), and programmable conversion rates of 30 or 60 conversions per second. It draws 400µA during conversion and reduces power consumption to less than 0.2µA in sleep mode. The component is housed in an ultra-tiny 8-lead, 3mm × 2mm plastic DFN package.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with no missing codes and 0.02 LSB RMS noise
• Single-supply operation from 2.7V to 5.5V with <0.2µA sleep current
• Integrated internal oscillator requiring no external components
• Programmable 30Hz or 60Hz conversion speeds via I²C interface

Analog To Digital Converters (ADC) Applications

• System monitoring
• Environmental monitoring
• Direct temperature measurements
• Instrumentation
• Industrial process control
• Data acquisition
• Embedded ADC upgrades

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #TRMPBF indicates a tape and reel quantity of 500 pieces. Confirm the 'C' grade designation corresponds to the commercial operating temperature range of 0°C to 70°C. Ensure the source documentation matches the specific part marking LDGQ for this variant. Cross-reference the manufacturer's official lead-free finish specifications if RoHS compliance is required for the assembly process.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-pin-count, high-precision ADC is required for space-constrained designs. The 3mm × 2mm DFN package is suitable for applications where board area is limited. Choose the 30Hz mode for applications requiring continuous internal offset calibration, which ensures accuracy over time and temperature. Ensure the system can accommodate the 400kHz I²C clock frequency and provides adequate decoupling capacitors near the VCC pin.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2451 family of ultra-tiny, 16-bit ∆Σ ADCs. The CDDB suffix specifically denotes the commercial temperature grade (0°C to 70°C) and the 8-lead DFN package. Other variants in the family include the IDDB series for industrial temperatures (-40°C to 85°C) and the TSOT-23 packaged versions (CTS8/ITS8). All variants share the same core functionality and pinout.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. For pin-compatible alternatives within the same family, consider the LTC2451IDDB#TRMPBF for extended temperature ranges or the LTC2451CTS8#TRMPBF for a TSOT-23 package footprint.