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LTC2000A - 16-/14-/11-Bit 2.7Gsps DACs

The LTC®2000A is a family of 16-/14-/11-bit 2.7Gsps current steering DACs with exceptional spectral purity.

The single (1.35Gsps mode) or dual (2.7Gsps mode) port source synchronous LVDS interface supports data rates of up to 1.35Gbps using a 675MHz DDR data clock, which can be either in quadrature or in phase with the data. An internal synchronizer automatically aligns the data with the DAC sample clock.

Additional features such as pattern generation, LVDS loopout and junction temperature sensing simplify system development and testing.

A serial peripheral interface (SPI) port allows configuration and read back of internal registers. Operating from 1.86V and 3.3V supplies, the LTC2000A consumes 2.41W at 2.7Gsps and 1.43W at 1.35Gsps.

Features 80dBc SFDR at 50MHz fOUT >68dBc SFDR from DC to 1080MHz fOUT 40mA Nominal Full-Scale, ±1V Output Compliant 10mA to 60mA Adjustable Full-Scale Current Range Single or Dual Port DDR LVDS and DHSTL Interface Low Latency (7.5 Cycles for Single Port, 11 Cycles for Dual Port) >78dBc 2-Tone IMD from DC to 1000MHz fOUT –156dBc/Hz Additive Phase Noise at 1MHz Offset for 65MHz fOUT 170-Lead (9mm × 15mm) BGA Package Typical Application

Applications Broadband Communication Systems DOCSIS CMTS Direct RF Synthesis Radar Instrumentation Automatic Test Equipment Packaging

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