Analog to Digital Converters – ADC 8-Ch, 14-B, 100ksps SoftSpan A/D Convs w

LTC1858IG#PBF – 8-Channel 14-Bit 100ksps ADC with SoftSpan™ – Analog Devices

Optimize your precision measurement systems with the LTC1858IG#PBF from Analog Devices – a high-performance 14-bit analog-to-digital converter (ADC) featuring configurable input ranges and flexible operation. This 8-channel ADC delivers 100k samples per second with exceptional accuracy, making it ideal for industrial automation, test equipment, and embedded control applications. PCX ensures genuine Analog Devices components with same-day shipping and dedicated technical support.

Key Features

• 14-bit resolution for precise signal digitization
• 100ksps sampling rate across all 8 channels
• SoftSpan™ technology enables programmable input ranges (±10V, ±5V, 0-10V)
• SPI-compatible serial interface for simplified microcontroller integration
• Single +5V supply operation (analog & digital)
• Wide temperature range: -40°C to +85°C

Technical Details

This SAR architecture ADC integrates 8 configurable inputs supporting single-ended or differential signals with a 1:1 S/H-to-ADC ratio. The 28-SSOP surface-mount package (5.30mm width) includes both internal and external reference options for design flexibility. Optimized for multiplexed systems, it features a MUX-S/H-ADC configuration with low power consumption and minimal external components.

Typical Applications

• Industrial process control systems
• Data acquisition modules (DAQ)
• Medical instrumentation
• Automated test equipment (ATE)
• Embedded motor control units

About Analog Devices

Analog Devices Inc. (ADI) stands at the forefront of high-performance semiconductor solutions, specializing in data conversion and signal processing technologies. With over 50 years of industry leadership, ADI consistently delivers innovative components that meet rigorous quality standards for mission-critical applications.

Renowned for engineering excellence, ADI’s products undergo extensive validation to ensure reliability in extreme environments. Their ADCs set industry benchmarks for accuracy and power efficiency, making them the preferred choice for aerospace, automotive, and industrial design engineers worldwide.

About Analog-to-Digital Converters (ADCs)

ADCs serve as critical bridges between analog sensors and digital processing systems, converting real-world signals like temperature, pressure, or voltage into digital data. Modern applications demand ADCs with high resolution, fast sampling, and low noise to accurately capture dynamic signals.

Advanced ADCs like the LTC1858 series enable sophisticated measurement capabilities in compact designs. Their performance directly impacts system accuracy in medical devices, energy monitoring, and IoT endpoints, where precision analog conversion determines overall product functionality.

Packaging Options

Available in protective Tube packaging for secure handling and automated assembly.

FAQs

Q: What advantages does SoftSpan™ technology provide?
A: SoftSpan™ allows software-configurable input ranges (±10V, ±5V, etc.), eliminating hardware switches and enabling dynamic range adjustment during operation.

Q: Is an external reference required for operation?
A: No – the LTC1858IG#PBF includes both internal 2.5V and external reference options for design flexibility.

Q: What microcontroller interfaces are supported?
A: It features a SPI-compatible 4-wire serial interface compatible with most modern microcontrollers and DSPs.

Q: Can I use single-ended and differential inputs simultaneously?
A: The 8-channel input multiplexer can be individually configured for either input type per channel.

Q: How does this ADC handle temperature variations?
A: With its industrial-grade -40°C to +85°C operating range and ADI’s precision design, it maintains consistent performance in harsh environments.

Q: What anti-aliasing features are included?
A: The integrated sample-and-hold circuit with 1:1 ratio minimizes aliasing, but external filtering is recommended for noisy environments.

Product image is representational; refer to datasheet for exact specifications. Download datasheet

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