LTC1419IG#PBF

Analog To Digital Converters (ADC) Overview

The LTC1419IG#PBF is a 14-bit, 800ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from ±5V supplies and dissipates 150mW during normal conversion. The device features a true differential input sample-and-hold with a ±2.5V full-scale range and an internal 2.5V precision reference. Key performance metrics include 81.5dB signal-to-(noise + distortion) ratio at 100kHz input, 93dB total harmonic distortion, and a 20MHz full-power bandwidth. It utilizes a µP-compatible 14-bit parallel output interface without pipeline delay.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with no missing codes and 800ksps sampling rate
• Internal 2.5V reference with 15ppm/°C temperature coefficient
• True differential inputs providing 60dB common mode rejection
• Nap and Sleep shutdown modes for power reduction

Analog To Digital Converters (ADC) Applications

• Telecommunications
• Digital Signal Processing
• Multiplexed Data Acquisition Systems
• High Speed Data Acquisition
• Spectrum Analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'I' suffix indicates an industrial temperature range of –40°C to 85°C. Confirm the '#PBF' suffix denotes lead-free packaging compliant with RoHS standards. Ensure the SSOP-28 package matches the target PCB footprint. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity.

Analog To Digital Converters (ADC) Selection Notes

Select this component when bipolar ±2.5V input ranges are required. The internal reference simplifies design but allows external reference override via the VREF pin. Verify that the driving source impedance is low enough to meet the 90ns acquisition time or utilize a buffer amplifier. Ensure the system timing accommodates the 40ns CONVST pulse width and BUSY signal delays.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1419 family of high-speed, low-power ADCs. The 'IG' designation specifies the industrial temperature grade and SSOP-28 plastic package. Other variants include the 'CG' for commercial temperature range and 'ISW'/'CSW' for SOIC-28 packages. All share identical electrical specifications and pinouts.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes within the same family include LTC1419CG#PBF (commercial temp) and LTC1419ISW#PBF (industrial temp, SOIC package). These parts offer functional compatibility but differ in operating temperature range or physical package dimensions.