參數(shù)資料
型號(hào)： 5962-0724701VXA
廠商： TEXAS INSTRUMENTS INC
元件分類： DAC
英文描述： PARALLEL, WORD INPUT LOADING, 0.0035 us SETTLING TIME, 14-BIT DAC, CBGA192
封裝： CERAMIC, BGA-192
文件頁(yè)數(shù)： 1/30頁(yè)
文件大?。?/td> 970K
代理商： 5962-0724701VXA
www.ti.com
SGLS386A – JANUARY 2009 – REVISED DECEMBER 2009
14-BIT 2.4-GSPS DIGITAL-TO-ANALOG CONVERTER
Check for Samples: DAC5670-SP
1
FEATURES
Differential Scalable Current Outputs:
5 mA to 30 mA
2
14-Bit Resolution
On-Chip 1.2-V Reference
2.4-GSPS Maximum Update Rate Digital to
Analog Converter
3.3-V Analog Supply Operation
Dual Differential Input Ports
Power Dissipation: 2 W
–
Even/Odd Demultiplexed Data
192-Ball CBGA (GEM) Package
–
Maximum 1.2 GSPS Each Port, 2.4 GSPS
QML-V Qualified, SMD 5962-07247
Total
Military Temperature Range
–
Dual 14-Bit Inputs + 1 Reference Bit
(-55°C to 125°C Tcase )
–
DDR Output Clock
APPLICATIONS
–
DLL Optimized Clock Timing Synchronized
Cable Modem Termination System Direct
to Reference Bit
Synthesis
–
LVDS and HyperTransport Voltage Level
Cellular Base Transceiver Station Transmit
Compatible
Channels
–
Internal 100-
Terminations for Data and
–
CDMA: W-CDMA, CDMA2000, TD-SCDMA
Reference Bit Inputs
–
800 to 900-MHz Direct Synthesis
Selectable 2 Times Interpolation With Fs/2
Point-to-Point Microwave
Mixing
Radar
Satellite 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).
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 192-ball CBGA package. The device is characterized for operation over the
military temperature range ( –55°C to 125°C Tcase).
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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