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参数资料
| 型号： | THS8135PHP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.015 us SETTLING TIME, 10-BIT DAC, PQFP48 |
| 封装： | GREEN, PLASTIC, HTQFP-48 |
| 文件页数： | 3/25页 |
| 文件大小： | 522K |
| 代理商： | THS8135PHP |
THS8135
TRIPLE 10BIT, 240 MSPS VIDEO DAC WITH TRILEVEL SYNC AND VIDEO
(ITUR.BT601)COMPLIANT FULL SCALE RANGE
SLAS343A MAY 2001 REVISED JUNE 2002
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
0
1023
0
700
512
400
50
800
64
960
300 mV
800 mV
700 mV
300 mV
Illegal Color
Difference Outputs
Input
Codes
VO
mV
0
Figure 4. CbCr Outputs, Reduced-Scale Input Code Range
output amplitude control
The current drive on all three output channels (including sync) is controlled by a resistor RFS that must be
connected between FSADJ and AVSS. In all operation modes the relative amplitudes of these current drivers
are maintained irrespective of the RFS value, as long as a maximum current drive capability is not exceeded.
Therefore, a 7:3 video to sync ratio is preserved when adjusting RFS.
The sync generator is composed of different current sources that are internally routed to a corresponding DAC
output. Since they are additional to the video DACs, full 10-bit DAC resolution is preserved for video. 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-G/Y) if INS3_INT=L or all three channel outputs (sync-on-all) if INS3_INT=H. Sync insertion
is only available in video DAC mode.
Figure 5 shows the relationship between RFS and the current drive level on each channel for full-range DAC
input. When using reduced-scale range, the codes on the G/Y channel are not internally scaled (only BCb and
RCr channels are scaled). Therefore, the user should increase the DAC full-scale current by decreasing RFS
by a factor of 1023/(940-64) to map the reduced-scale Y input code range to the same output current drive level.
Since these are the current drive levels for the video DACs they do not take into account the additional dc bias
for sync insertion when using video DAC mode. The voltage compliance outputs in Figure 5 assume termination
with a 37.5-
resistor.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS8135PHP | 制造商:Texas Instruments 功能描述:10BIT DAC 240MSPS TRIPLE SMD |
| THS8135PHPG4 | 功能描述:数字化视频/模拟转换器集成电路 Tr 10B 240MSPS Video DAC RoHS:否 制造商:Texas Instruments 转换器数量:3 输出类型:Current 转换速率:180 MSPs 分辨率:10 bit 接口类型:Parallel 电压参考:Internal or External 积分非线性:- 2.5 LSB, 1.5 LSB 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:HTQFP 封装:Tray |
| THS8136 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TRIPLE 10-BIT 180-MSPS GRAPHICS AND VIDEO DAC |
| THS8136IPHP | 功能描述:数字化视频/模拟转换器集成电路 Triple 10B 180MSPS Graphics & Video DAC RoHS:否 制造商:Texas Instruments 转换器数量:3 输出类型:Current 转换速率:180 MSPs 分辨率:10 bit 接口类型:Parallel 电压参考:Internal or External 积分非线性:- 2.5 LSB, 1.5 LSB 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:HTQFP 封装:Tray |
| THS8136IPHPR | 功能描述:数字化视频/模拟转换器集成电路 Triple 10B 180MSPS Graphics & Video DAC RoHS:否 制造商:Texas Instruments 转换器数量:3 输出类型:Current 转换速率:180 MSPs 分辨率:10 bit 接口类型:Parallel 电压参考:Internal or External 积分非线性:- 2.5 LSB, 1.5 LSB 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:HTQFP 封装:Tray |
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