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16-Bit, 2.5Gsps DAC Delivers 74dB Spurious Free Dynamic Range
MILPITAS, CA - September 8, 2014 - Linear Technology Corporation
announces the LTC2000, a 16-bit 2.5Gsps digital-to-analog converter
(DAC) with exceptional spectral purity of 74dBc SFDR at 200MHz
output, and better than 68dBc SFDR for output frequencies from DC
to 1GHz, a 12dB improvement over alternative 14-bit DACs. The
LTC2000 features low phase noise and a wide 2.1GHz -3dB output
bandwidth, enabling broadband or high frequency RF synthesis in
applications such as high-end instrumentation, broadband
communications, test equipment, cable TV DOCSIS CMTS, and
radar.
16-Bit, 2.5Gsps DAC
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The ±1V compliant outputs feature a 40mA full scale current which
can be adjusted as low as10mA or as high as 60mA to suit the
application. Data is transferred to the LTC2000 over a parallel
LVDS interface port with transfer rates of up to 1.25Gsps using a
625MHz double data rate (DDR) data clock. Dual DDR ports are
required to achieve the 2.5Gsps update rate, while a single port
can be used to operate at a lower 1.25Gsps update rate. At 2.5Gsps,
the LTC2000 consumes 2.2W from dual 1.8V and 3.3V supplies, while
at 1.25Gsps the device consumes just 1.3W. Designed for ease of
use, the LTC2000 offers an internal pattern generator, LVDS loop
out mux, and junction temperature sensing to simplify system
development and debug.
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The LTC2000 is offered in 16-bit, 14-bit and 11-bit versions in
a RoHS compliant 9mm x 15mm BGA package. The LTC2000 is available
in production today in commercial and industrial temperature
grades, competitively priced, starting at $69.00 each for the
LTC2000-16 in 1,000-piece quantities. Demoboards and samples are
available via the Linear Technology website www.linear.com/product/LTC2000
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Summary of Features: LTC2000
- 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 & DHSTL Interface
- Low Latency (7.5 Cycles for Single Port, 11 Cycles for Dual
Port)
- >78dBc 2-Tone IMD from DC to 1000MHz
- -165dBc/Hz Additive Phase Noise at 1MHz Offset from 65MHz
fOUT
- 170-Lead (9mm x 15mm) BGA Package
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LTC2000
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The USA list pricing shown is for budgetary use only. International
prices may differ due to local duties, taxes, fees and exchange
rates.
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