LTC1418IN#PBF

Analog To Digital Converters (ADC) Overview

The LTC1418IN#PBF is a low power, 14-bit, 200ksps Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. It features selectable serial or parallel data output formats and operates from a single 5V or ±5V supply. The device integrates a high-performance sample-and-hold circuit, a precision reference, and internal timing to minimize external component requirements. Key electrical specifications include ±1.25LSB maximum Integral Nonlinearity (INL), ±1LSB maximum Differential Nonlinearity (DNL), and no missing codes over the operating temperature range. Typical AC performance at the Nyquist frequency of 100kHz includes an 81.5dB Signal-to-Noise Plus Distortion ratio (S/(N+D)) and -94dB Total Harmonic Distortion (THD).

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 200ksps sampling rate and 15mW typical power dissipation.
• Selectable 14-bit parallel or SPI/MICROWIRE compatible serial I/O interface.
• Integrated sample-and-hold, precision reference, and internal timing logic.
• Dual power shutdown modes: Nap mode (quick wake-up) and Sleep mode.

Analog To Digital Converters (ADC) Applications

• Remote Data Acquisition Systems
• Battery Operated Systems
• Digital Signal Processing
• Isolated Data Acquisition Systems
• Medical Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix matches the required package type. The 'IN' suffix indicates a 28-lead Narrow PDIP package. Confirm the temperature grade corresponds to the application environment; the 'I' suffix denotes an industrial range of –40°C to 85°C. Ensure compatibility with existing PCB footprints for through-hole mounting.

Analog To Digital Converters (ADC) Selection Notes

Select this component when low power consumption is critical alongside 14-bit accuracy. The LTC1418 supports both unipolar (0V to 4.096V) and bipolar (±2.048V) input ranges depending on the supply configuration. Consider the serial interface if pin count reduction is necessary, or parallel mode for higher throughput without clock overhead. Verify source impedance limits to ensure acquisition time requirements are met.

Analog To Digital Converters (ADC) Part Context

The LTC1418 belongs to the Linear Technology (now Analog Devices) family of low-power SAR ADCs. It is designed to replace older, higher-power conversion solutions in portable and battery-operated equipment. The device offers factory calibration to eliminate the need for extensive user calibration cycles, ensuring DC accuracy across temperature variations.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified documentation.

Analog To Digital Converters (ADC) FAQ

What are the available power shutdown modes?

The LTC1418 offers two user-selectable power shutdown modes: Nap mode, which provides quick wake-up, and Sleep mode, which minimizes current consumption further.

How does the digital interface operate?

The device supports both parallel and serial data output. The serial port is SPI/MICROWIRE compatible, functioning as either master or slave with clock frequencies up to 10MHz.

What is the analog input range configuration?

From a single 5V supply, the input range is 0V to 4.096V. From ±5V supplies, the input range is ±2.048V.