LTC2156IUP-14

Analog To Digital Converters (ADC) Overview

The LTC2156IUP-14 is a dual-channel, 14-bit, 210Msps analog-to-digital converter (ADC) from Analog Devices. It features a pipeline architecture with DDR LVDS outputs and an internal reference. Key electrical parameters include a typical Signal-to-Noise Ratio (SNR) of 68.3dBFS at 70MHz input, a Spurious Free Dynamic Range (SFDR) of 90dBFS, and a full-power bandwidth of 1.25GHz. The device operates on a single 1.8V supply, dissipating approximately 592mW. It offers low power sleep and nap modes, an optional clock duty cycle stabilizer, and serial SPI configuration via a dedicated interface.

Analog To Digital Converters (ADC) Feature Summary

• Dual 14-bit resolution with 210Msps sampling rate
• High dynamic performance: 68.3dB SNR and 90dB SFDR
• 1.25GHz full-power bandwidth for high undersampling ratios
• Integrated internal voltage reference and common mode bias

Analog To Digital Converters (ADC) Applications

• Cellular base stations
• Software defined radios
• Medical imaging systems
• High definition video processing
• Testing and measurement instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. The 'I' designation indicates an industrial temperature range (-40°C to 85°C). Confirm availability status as supply conditions may vary by region and distributor. Ensure compatibility with the required output interface and power supply specifications before integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel digitization at 14-bit resolution and 210Msps is required. Compare against the LTC2157-14 if a higher 250Msps sampling rate is needed, or the LTC2155-14 for lower power consumption at 170Msps. Ensure the system supports DDR LVDS signaling and provides appropriate termination. Verify that the 1.8V supply rails meet the absolute maximum ratings for VDD and OVDD.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC215x-14 family of high-speed ADCs, which also includes the LTC2157-14 and LTC2155-14 variants. These devices share pin compatibility and architectural similarities, differing primarily in sampling speed and power consumption. They are designed for demanding communications applications requiring wide dynamic range and high linearity.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2157IUP-14#TRPBF (250Msps) and LTC2155IUP-14#TRPBF (170Msps). Verify that the replacement variant meets the specific sampling rate and power budget requirements of the design.