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DAC5687IPZP 데이터시트(PDF) 19 Page - Texas Instruments

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부품명 DAC5687IPZP
상세설명  16-BIT, 500 MSPS 2x-8x INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC)
PDF  72 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

DAC5687IPZP 데이터시트(HTML) 19 Page - Texas Instruments

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CLK1
CLK1C
PLLLOCK
IOGND
IOVDD
RESETB
EXTIO
EXTLO
BIASJ
IOUTA1
IOUTA2
IOUTB1
IOUTB2
TxENABLE
DA[15:0]
DB[15:0]
CEXTIO
0.1
µF
RBIAS
1 k
Ω
3.3 V
3.3 V
100
Ω
HP8665B
Synthesized
Signal
Generator
1:4
Mini Circuits
TCM4−1W
200
Ω
0.01
µF
16
Agilent 16702B
Mainframe System
With
16702A Pattern
Generator Card
Rohde & Schwarz
FSQ8
Spectrum
Analyzer
PULSE
FREQ. = fdata
93.1
Ω
0.033
µF
330 pF
Agilent 8133A
Pulse Generator
CLK2
CLK2C
1.8 V/2.1 V
10
Ω
10 pF
3.3 V
16
PULSE
FREQ. = fdata
Ampl. = 1 VPP
1:4
Mini Circuits
T4−1
3.3 V
3.3 V
100
Ω
3.3 V
Sinusoid
FREQ. = fdata
B0039-02
3.3 V
DAC5687
SLWS164B – FEBRUARY 2005 – REVISED JUNE 2005
Test Methodology (continued)
Figure 27. DAC5687 Test Configuration for PLL Clock Mode
WCDMA Test Model 1 test vectors for the DAC5687 characterization were generated in accordance with the
3GPP Technical Specification . Chip rate data was generated using the Test Model 1 block in Agilent ADS. For
multicarrier signals, different random seeds and PN offsets were used for each carrier. A Matlab script performed
pulse shaping, interpolation to the DAC input data rate, frequency offsets, rounding and scaling. Each test vector
is 10 ms long, representing one frame. Special care is taken to assure that the end of file wraps smoothly to the
beginning of the file.
The cumulative complementary distribution function (CCDF) for the 1, 2, and 4 carrier test vectors is shown in
Figure 28. The test vectors are scaled such that the absolute maximum data point is 0.95 (-0.45 dB) of full scale.
No peak reduction is used.
19



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