DAC5670_15 Datasheet, PDF (1/30 Pages) Texas Instruments – 14-BIT 2.4-GSPS DIGITAL-TO-ANALOG CONVERTER

DAC5670
www.ti.com
SGLS394E – MARCH 2010 – REVISED FEBRUARY 2013
14-BIT 2.4-GSPS DIGITAL-TO-ANALOG CONVERTER
Check for Samples: DAC5670
FEATURES
1
•2 14-Bit Resolution
• 2.4-GSPS Maximum Update Rate Digital to
Analog Converter
• Dual Differential Input Ports
– Even/Odd Demultiplexed Data
– Maximum 1.2 GSPS Each Port, 2.4 GSPS
Total
– Dual 14-Bit Inputs + 1 Reference Bit
– DDR Output Clock
– DLL Optimized Clock Timing Synchronized
to Reference Bit
– LVDS and HyperTransport™ Voltage Level
Compatible
– Internal 100-Ω Terminations for Data and
Reference Bit Inputs
• Selectable 2 Times Interpolation With Fs/2
Mixing
• Differential Scalable Current Outputs:
5 mA to 30 mA
• On-Chip 1.2-V Reference
• 3.3-V Analog Supply Operation
• Power Dissipation: 2 W
• 252-Ball GDJ Package
APPLICATIONS
• Test and measurement: Arbitrary Waveform
Generator
• Communications
DESCRIPTION
The DAC5670 is a 14-bit 2.4-GSPS digital-to-analog converter (DAC) with dual demultiplexed differential input
ports. The DAC5670 is clocked at the DAC sample rate and the two input ports run at a maximum of 1.2 GSPS.
An additional reference bit input sequence is used to adjust the output clock delay to the data source, optimizing
the internal data latching clock relative to this reference bit with a delay lock loop (DLL). Alternatively, the DLL
may be bypassed and the timing interface managed by controlling DATA setup and hold timing to DLYCLK.
The DAC5670 also can accept data up to 1.2 GSPS on one input port the same clock configuration. In the single
port mode, repeating the input sample (A_ONLY mode), 2 times interpolation by zero stuff (A_ONLY_ZS mode),
or 2 times interpolation by repeating and inverting the input sample (A_ONLY_INV) are used to double the input
sample rate up to 2.4 GSPS.
The DAC5670 operates with a single 3-V to 3.6-V supply voltage. Power dissipation is 2 W at maximum
operating conditions. The DAC5670 provides a nominal full-scale differential current-output of 20 mA, supporting
both single-ended and differential applications. An on-chip 1.2-V temperature-compensated bandgap reference
and control amplifier allows the user to adjust the full-scale output current from the nominal 20 mA to as low as 5
mA or as high as 30 mA. The output current can be directly fed to the load with no additional external output
buffer required. The device has been specifically designed for a differential transformer coupled output with a 50-
Ω doubly-terminated load.
The DAC5670 is available in a 252-ball GDJ package. The device is characterized for operation over the
temperature range –40°C to 85°C .
TEMPERATURE
–40°C to 85°C
AVAILABLE OPTIONS⁽¹⁾
PACKAGE ⁽²⁾
252-GDJ
TOP SIDE SYMBOL
DAC5670I
(1) For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI website at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated