参数资料
型号: THS8135-80CPHP
厂商: TEXAS INSTRUMENTS INC
元件分类: DAC
英文描述: PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PQFP48
封装: POWER, TQFP-48
文件页数: 8/24页
文件大小: 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
17
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
Output amplitude control
The current drive on all three output channels and on the internal sync generator is controlled by a resistor
RFS that must be connected between FSADJ and AVSS. In all operation modes the relative amplitudes of the
current drivers are maintained irrespective of the RFS value, as long as a maximum current drive capability is
not exceeded.
The sync generator is composed of different current sources that are internally routed to a corresponding
DAC output. Depending on the setting of INS3_INT during /SYNC low, the sync current drive is added to
either only the green channel output (sync-on-green) if INS3_INT=L or all three channel outputs if
INS3_INT=H, when in video mode. In either case the relative current levels, as defined below, are
maintained.
The exact relationship between RFS and the current drive level on each channel is dependent on the operation
mode of the device: YCbCr vs RGB and ‘full-scale mode’ or ‘reduced ITU-R.BT601 mode’.
The device has an internal voltage reference derived from a bandgap reference of 1.2V. The relationship
between the full-scale current drive level (in full-scale mode) and RFS is given by:
IFS [mA] = α x VREF [V] / RFS []
where
α is dependent on the operation mode of the device.
相关PDF资料
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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