參數(shù)資料
型號: THS8135-80CPHP
廠商: TEXAS INSTRUMENTS INC
元件分類: DAC
英文描述: PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PQFP48
封裝: POWER, TQFP-48
文件頁數(shù): 7/24頁
文件大?。?/td> 546K
代理商: THS8135-80CPHP
THS8135
TRIPLE 10-BIT, 80/240 MSPS VIDEO DAC WITH TRI-LEVEL SYNC AND VIDEO (ITU-R.BT601)
– COMPLIANT FULL SCALE RANGE
SLVSXXXX—10/02/00 3:44 PM
16
Copyright 2000 Texas Instruments Incorporated
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data
and other specifications are design goals. Texas Instruments
reserves the right to change or discontinue these products
DAC operation
The analog output drivers generate a currrent of which the drive level can be user-modified by choice of an
appropriate resistor value RFS, connected to the FSADJ pin. Refer to the paragraph on output amplitude
control for details on how the output drive is affected by the operation mode of the device.
All current sources derive their amplitudes from an internal generator that produces a 1.2V reference level. All
current source amplitudes (video, blanking, sync) are derived from this reference
so that the relative
amplitudes of sync/blank/video are always equal to their nominal relationships. For increased stability on the
absolute levels, the user can overdrive the reference by directly driving the VREF terminal.
Figure 7 shows the nominal voltage output levels in video mode. Note that in all modes (RGB & YPbPr) the
blanking level corresponds to 350mV. The position of the blanking level stays constant in both sync-on-Y or
sync-on-all modes, and whether actual sync insertion is used or not on the device. In generic mode, the DAC
output swing for full-scale or reduced-scale input codes (depending on device configuration) is 0 to 700mV.
AVSS
50mV
350mV
650mV
1050mV
50mV
350mV
650mV
700mV
R,G,B,Y
Pb,Pr
Figure 7: Typical DAC output waveforms in ‘video’ mode
相關(guān)PDF資料
PDF描述
THS8135-80IPHP PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PQFP48
THS8135-240CPHP PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PQFP48
THS8135PHP PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 10-BIT DAC, PQFP48
THS8135PHPG4 PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 10-BIT DAC, PQFP48
THS8136IPHPQ1 PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 10-BIT DAC, PQFP48
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