The LTC2274 is a 105Msps, 16-bit ADC that simplifies the digital connection between the ADC and FPGA by replacing the usual parallel interface with a novel high speed serial interface, thus reducing the typical number of required data input/output (I/O) lines from 16 CMOS or 32 LVDS parallel data lines to a single, self-clocking, differential pair communicating at 2.1Gbps. This frees up valuable FPGA pins and board space. It also allows flexibility to route across analog and digital boundaries—in noise sensi- tive applications, the serial interface provides higher noise immunity.
The document introduces the LTC2274 as a 105Msps, 16-bit ADC that simplifies digital connections by replacing parallel interfaces with a novel high-speed serial interface. This design reduces data input/output lines from 16 CMOS or 32 LVDS to a single self-clocking differential pair communicating at 2.1Gbps.
| Sample Rate | 105Msps |
|---|---|
| Resolution | 16-bit |
| Signal to Noise Ratio (SNR) | 77.6dBFS |
| Spurious Free Dynamic Range (SFDR) | 100dB |
| Serial Data Rate | 2.1Gbps |
The device uses a novel high speed serial interface to replace traditional parallel devices.
It reduces required data input/output lines from 16 CMOS or 32 LVDS parallel data lines to a single, self-clocking, differential pair.
The device uses an 8B/10B encoder to encode and serialize the data before transmission.