Linear Technology LTC2428CG Overview

The LTC2428CG is a high-precision, 24-bit No Latency ΔΣ™ Analog-to-Digital Converter (ADC) from Linear Technology, designed for direct digitization of low-frequency, high-impedance sensor signals. This ADC is notable for its unique no-latency conversion, which allows for both single-cycle settling time and no pipeline delay, making it an ideal choice for multiplexed applications that require fast channel-to-channel switching.

Key Features

• Resolution: 24-bit No Latency ΔΣ ADC, offering high-resolution measurements.
• Channels: 8-channel multiplexer with automatic channel scanning, facilitating multiple sensor readings with a single device.
• Input Range: Programmable input ranges of ±10V, ±5V, ±2.5V, and -2.5V to +7.5V, providing flexibility for various signal levels.
• Data Output: Digital output via a 3-wire SPI-compatible serial interface, ensuring easy integration with microcontrollers and digital systems.
• Supply Voltage: Single 5V supply operation, minimizing power requirements and simplifying power supply design.
• Package: Offered in a 24-pin SSOP package, suitable for space-constrained applications.
• Temperature Range: Industrial temperature range of -40°C to +85°C, ensuring reliable performance in challenging environments.

Applications

The LTC2428CG is a versatile ADC that is well-suited for a wide range of applications, including:

• Industrial process control
• Temperature measurements with RTDs or thermocouples
• Pressure sensor interfacing
• Data acquisition systems
• Medical instrumentation
• Scientific instrumentation

Performance Advantages

The LTC2428CG's no-latency feature provides immediate, accurate data upon demand, which is critical for control systems that require real-time decision-making. Its high-resolution 24-bit output and flexible input ranges make it suitable for precision measurements without the need for external signal conditioning. The integrated multiplexer and SPI interface reduce the need for additional components, resulting in a simplified design and reduced system cost.

Conclusion

Linear Technology's LTC2428CG is a robust and precise ADC that delivers high-resolution measurements with the added benefit of no-latency conversion. Its comprehensive features and ease of use make it an excellent choice for engineers looking to enhance the performance of their data acquisition and sensor interfacing systems.