Linear Technology LTC1749IFW#TRPBF

Description
The LTC1749 is an 80Msps, 12-bit analog-to-digital converter (ADC) designed for digitizing wide dynamic range signals up to frequencies of 500MHz. It features a highly linear sample-and-hold circuit with a bandwidth of 500MHz and ultralow jitter of 0.15pSRMS, allowing for undersampling of IF frequencies with minimal degradation in SNR. The input range of the ADC can be optimized with the on-chip PGA sample-and-hold circuit and flexible reference circuitry. The digital interface is compatible with 5V, 3V, 2V, and LVDS logic systems. The LTC1749 is packaged in a 48-pin TSSOP package with a flow-through pinout.

Features
Sample rate: 80Msps
PGA front end (2.25Vp.p or 1.35Vp.p input range)
71.8dB SNR and 87dB SFDR (PGA = 0)
70.2dB SNR and 87dB SFDR (PGA = 1)
500MHz full power bandwidth S/H
No missing codes
Single 5V supply
Power dissipation: 1.45W
Two pin selectable reference values
Data ready output
Clock output
Pin compatible 14-bit 80Msps device (LTC1750)

Applications
Direct IF sampling
Telecommunications
Receivers
Cellular base stations
Spectrum analysis
Communications test equipment
Undersampling