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參數(shù)資料
| 型號： | MV95308CMP |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | DAC |
| 英文描述： | 30MHz 8-BIT CMOS VIDEO DAC |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 0.015 us SETTLING TIME, 8-BIT DAC, PDSO20 |
| 封裝： | MINIATURE, PLASTIC, DIP-20 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 286K |
| 代理商： | MV95308CMP |
MV95308
5
APPLICATIONS INFORMATION
RS-343A and RS-170 Video Generation
For generation of RS-343A compatible video levels (see
Fig.4) it is recommended that a singly terminated 75
load
be used with an R
SET
resistor value of approximately 1.82k
Similarly for the generation of RS-170 video levels a
singly terminated 75
load should be used but in association
with an R
SET
value of approximately 1.29k
to provide the
increased voltage range.
Non-Video Applications
The MV95308 may be used in non-video applications as
explained in the pin description for STRDAC mode.The
relationship between R
SET
and the full scale output current
has been explained previously and for a singly terminated
75
load an R
SET
resistor value of approximately 1.19k
should be used.
PCB LAYOUT CONSIDERATIONS
The PCB layout should provide low noise on the
MV95308 power and ground lines by shielding the digital
inputs and providing adequate decoupling. The PCB should
utilise both power and ground planes for best performance,
connecting both planes to their respective regular PCB
planes through a ferrite bead located as close as possible to
the device. For best performance, a 100nF capacitor should
be used to decouple the reference and supply pins.
Decoupling should take place as close to the device as
possible to reduce lead inductance. The digital inputs to the
device should be isolated as much as possible from the
analog outputs and other analog circuitry and should not
overlay the analog ground and power planes.
To reduce noise pick-up, long clock lines to the device
should be avoided. For best performance the analog output
should have a 75
load connected to analog ground.
Fig.4 Composite video output waveform
Fig.5 Applications/test board
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