LTC1402IGN#PBF

Analog To Digital Converters (ADC) Overview

The LTC1402IGN#PBF is a 12-bit, 2.2Msps sampling analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a high dynamic range sample-and-hold and an internal precision reference. The device operates from a single 5V supply or dual ±5V supplies, consuming 90mW in active mode. It offers true differential inputs with a common mode rejection ratio of –62dB at 1MHz. Key performance metrics include a signal-to-noise plus distortion ratio of 72dB and total harmonic distortion of –89dB at the Nyquist frequency. The ADC provides two power-saving modes: Nap (15mW) and Sleep (10mW).

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes over temperature.
• 2.2Msps sampling rate with 72dB S/(N + D) and –89dB THD at Nyquist.
• 3-wire serial interface compatible with SPI and MICROWIRE standards.
• Nap and Sleep power modes for low-power applications.

Analog To Digital Converters (ADC) Applications

• Telecommunications systems.
• High-speed data and signal acquisition.
• Digitally multiplexed data acquisition systems.
• Digital radio receivers.
• Spectrum analysis.

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type is 16-lead narrow plastic SSOP (GN). Confirm the temperature grade is Industrial (-40°C to 85°C) for the IGN suffix. Ensure the ordering suffix #PBF indicates lead-free compliance. Check for RoHS status as detailed in manufacturer documentation.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring a compact 3-wire interface and moderate speed up to 2.2Msps. It supports both unipolar (0V to 4.096V) and bipolar (-2.048V) input ranges. Consider the internal reference settling time of 2ms when waking from Sleep mode. Ensure the driving amplifier has sufficient bandwidth (>40MHz) to settle within the acquisition time.

Analog To Digital Converters (ADC) Part Context

The LTC1402 is part of the Linear Technology (now Analog Devices) family of serial sampling ADCs. It is designed to replace parallel ADCs in space-constrained designs by utilizing a serial interface that requires minimal routing space. The device integrates a sample-and-hold circuit and reference, reducing external component count compared to discrete solutions.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.