描述 Description

The LM97937 device is a dual-channel 370 MSPS analog-to-digital converter (ADC) with JESD204B interface operating up to 7.4 Gb/s. SNRBoost technology with bandpass spectral shaping improves the noise density at the intermediate frequency and Bit-Burst technology provides temporary and periodic resolution enhancement. The integrated input buffer reduces charge kick-back noise and eases the system level design of the driving amplifier, anti-aliasing filter and impedance matching. An input sampling clock divider provides integer divide ratios with configurable phase selection to simplify system clocking. The device comes in a 56-pin, 8-mm × 8-mm QFN package.

特性 Features

? Conversion Rate: 370 MSPS
? SNRBoost Noise Shaping with 100 MHz Bandpass Bandwidth
? Programmable Passband Center Frequency
? Bit-Burst Resolution Switching
? Hi-Res Noise Density: –152.7 dBFS/Hz
? Performance
? SNR (SNRBoost): 71.6 dBFS
? SFDR: 88 dBFS
? Power Dissipation: 876 mW/channel
? On-chip Precision Reference Without External Bypassing
? JESD204B Subclass 1 Serial Data Interface
? Configurable as 1- or 2-lanes/channel
? Fast Over-range Signals
? 56-pin QFN Package, (8 × 8 mm, 0.5mm pin-pitch)