LTC2207CUK-14#PBF

Analog To Digital Converters (ADC) Overview

The LTC2207CUK-14#PBF is a 14-bit, 105Msps analog-to-digital converter (ADC) housed in a 48-lead 7mm × 7mm plastic QFN package. It operates on a single 3.3V supply with power dissipation of 947mW at full speed. The device features an internal PGA supporting 2.25VP-P or 1.5VP-P input ranges and a 700MHz full-power bandwidth sample-and-hold amplifier. Key dynamic performance metrics include a typical Signal-to-Noise Ratio (SNR) of 77.3dBFS and a Spurious Free Dynamic Range (SFDR) of 98dB. Integral nonlinearity is specified at ±1.5LSB maximum, while differential nonlinearity is ±1LSB.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with sampling rates up to 105Msps
• Ultralow jitter of 80fs RMS for high-frequency undersampling
• Integrated Programmable Gain Amplifier (PGA) with selectable input ranges
• Optional internal dither and data output randomizer

Analog To Digital Converters (ADC) Applications

• Telecommunications
• Cellular Base Stations
• Spectrum Analysis
• Imaging Systems
• Automatic Test Equipment (ATE)

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and reel packaging. Confirm the 'C' grade designation corresponds to the commercial operating temperature range of 0°C to 70°C. Ensure compatibility with the 48-lead QFN footprint during procurement planning.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high linearity and low noise at 105Msps. Consider the LTC2206-14 variant if a lower sampling rate of 80Msps is sufficient, as it offers reduced power consumption. Verify that the system clock duty cycle requirements align with the optional internal duty cycle stabilizer feature.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2207 family of high-speed ADCs. It shares pin compatibility with the 16-bit LTC2207 and the 80Msps LTC2206-14 variants. The family supports various sampling rates from 10Msps to 105Msps across different bit resolutions.

Analog To Digital Converters (ADC) Replacement Considerations

LTC2206-14: Offers identical functionality at a reduced 80Msps sampling rate.

Analog To Digital Converters (ADC) FAQ

What is the function of the SENSE pin?

The SENSE pin selects between the internal 2.5V bandgap reference (when tied to VDD) or an external 2.5V/1.25V reference input.

How does the DITH pin affect performance?

Driving the DITH pin high enables internal dither, which improves spurious-free dynamic range (SFDR) by spreading quantization noise energy.

What is the pipeline latency of the ADC?

The LTC2207-14 has a fixed pipeline latency of 7 cycles.