LTC2435IGN#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2435IGN#TRPBF is a 20-bit delta-sigma analog-to-digital converter (ADC) from Analog Devices, housed in a 16-lead SSOP package. It operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 200µA during conversion and 4µA in sleep mode. The device features differential inputs and a differential reference range of 0.1V to VCC. Key electrical specifications include 3ppm integral nonlinearity (INL), 10ppm gain error, and 0.8ppm RMS noise. It utilizes an internal oscillator for line frequency rejection without external components.

Analog To Digital Converters (ADC) Feature Summary

• 20-Bit Resolution: Provides 20 bits of resolution with no missing codes and 3ppm INL.
• No Latency Architecture: Single cycle settling time allows direct multiplexing of multiple analog inputs.
• Differential Input/Reference: Accepts differential signals with GND to VCC common mode range.
• Integrated Oscillator: Internal clock eliminates the need for external crystals or oscillators.

Analog To Digital Converters (ADC) Applications

• Direct Sensor Digitizer
• Weigh Scales
• Direct Temperature Measurement
• Gas Analyzers
• Strain Gage Transducers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IGN' corresponds to the industrial temperature range (-40°C to 85°C) as defined in the manufacturer's ordering information. Confirm the '#TRPBF' designation indicates tape and reel packaging with lead-free finish. Cross-reference the part number against the official Analog Devices datasheet to ensure compatibility with the required operating conditions.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2435IGN#TRPBF when high precision (20-bit) and fast multiplexing are required. Choose this model over the LTC2430 for double the output rate due to the absence of offset calibration per cycle. Ensure the application requires differential input and can accommodate the 16-lead SSOP footprint. Verify that the system power supply remains within the 2.7V to 5.5V operational window.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2435 family of micropower ADCs. It serves as a higher-speed variant to the LTC2430, offering improved output rates while maintaining similar resolution and accuracy. The 'I' grade denotes industrial temperature performance, distinguishing it from the commercial 'C' grade variants within the same package type.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2430 is a compatible alternative if lower speed is acceptable. For pin-compatible upgrades requiring simultaneous 50Hz/60Hz rejection, consider the LTC2435-1 series. Verify that any substitute maintains the 20-bit resolution and differential interface requirements.