LTC2157CUP-14

Analog To Digital Converters (ADC) Overview

The LTC2157CUP-14 is a dual-channel, simultaneous sampling 14-bit analog-to-digital converter operating at a maximum sampling rate of 250Msps. It features a single 1.8V supply and DDR LVDS digital outputs. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 70dB and a Spurious Free Dynamic Range (SFDR) of 90dB. The device has a full-power bandwidth of 1.25GHz and dissipates approximately 650mW of power. Integral nonlinearity is typically ±0.85LSB, with differential nonlinearity at ±0.25LSB. The component is housed in a 64-lead 9mm × 9mm plastic QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel 14-bit ADC with 250Msps sampling rate
• 70dB SNR and 90dB SFDR performance
• Single 1.8V supply operation with 650mW power dissipation
• DDR LVDS outputs with optional clock duty cycle stabilizer

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm the temperature grade and packaging format. The 'C' designation indicates an operating range of 0°C to 70°C. Ensure the '#PBF' or '#TRPBF' suffix matches the required lead-free finish and tape-and-reel or tube packaging configuration before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring high dynamic range at 250Msps. Compare against LTC2156-14 (210Msps) or LTC2155-14 (170Msps) if lower power consumption is prioritized over maximum speed. Verify that the 1.5VP-P input range and internal reference capabilities align with the system signal chain requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC215x-14 family of dual-channel ADCs from Analog Devices. The family shares identical pinouts and functional blocks, differing primarily in maximum sampling rates and associated power consumption profiles. The CUP-14 variant specifically denotes the commercial temperature grade within the 64-lead QFN form factor.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2156CUP-14 and LTC2155CUP-14. These variants offer reduced sampling rates (210Msps and 170Msps respectively) which may result in lower power dissipation while maintaining the same interface and resolution.