The LTC®2000 is a family of 16-/14-/11-bit 2.5Gsps current steering DACs with exceptional spectral purity.
The single (1.25Gsps mode) or dual (2.5Gsps mode) port source synchronous LVDS interface supports data rates of up to 1.25Gbps using a 625MHz 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 1.8V and 3.3V supplies, the LTC2000 consumes 2.2W at 2.5Gsps and 1.3W at 1.25Gsps.
Applications
- Broadband Communication Systems
- DOCSIS CMTS
- Direct RF Synthesis
- Radar
- Instrumentation
- Automatic Test Equipment
Features
- 80dBc SFDR at 70MHz fOUT
- >68dBc SFDR from DC to 1000MHz 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
- –165dBc/Hz Additive Phase Noise at 1MHz Offset for 65MHz fOUT
- 170-Lead (9mm × 15mm) BGA Package
