Features

• Sample Rate: 80Msps/65Msps
• 81.5dBFS Noise Floor
• 100dB SFDR
• SFDR >95dB at 70MHz
• 85fs_RMS Jitter
• 2.75V_P-P Input Range
• 400MHz Full Power Bandwidth S/H
• Optional Internal Dither
• Optional Data Output Randomizer
• LVDS or CMOS Outputs
• Single 3.3V Supply
• Power Dissipation: 970mW/700mW
• Clock Duty Cycle Stabilizer
• Pin-Compatible with LTC2208, LTC2217
• 64-Pin (9mm x 9mm) QFN Package

Typical Application

Description

The LTC2216/LTC2215 are 80Msps/65Msps sampling 16- bit A/D converters designed for digitizing high frequency, wide dynamic range signals with input frequencies up to 400MHz. The input range of the ADC is fixed at 2.75V_P-P.

The LTC2216/LTC2215 are perfect for demanding communications applications, with AC performance that includes 81.5dBFS noise floor and 100dB spurious free dynamic range (SFDR). Ultra low jitter of 85fs_RMS allows undersampling of high input frequencies while maintaining excellent noise performance. Maximum DC specs include ±3.5LSB INL, ±1LSB DNL (no missing codes).

The digital output can be either differential LVDS or single-ended CMOS. There are two format options for the CMOS outputs: a single bus running at the full data rate or demultiplexed buses running at half data rate. A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V.

The ENC+ and ENC- inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed with a wide range of clock duty cycles.