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參數資料
| 型號： | ADV7128KR80 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | CMOS 80 MHz, 10-Bit Video DAC |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數： | 8/8頁 |
| 文件大小： | 135K |
| 代理商： | ADV7128KR80 |
ADV7128
REV. 0
–8–
C
P
It is important to note that while the ADV7128 contains cir-
cuitry to reject power supply noise, this rejection decreases with
frequency. If a high frequency switching power supply is used,
the designer should pay close attention to reducing power sup-
ply noise. A dc power supply filter (Murata BNX 002) will pro-
vide EMI suppression between the switching power supply and
the main PCB. Alternatively, consideration could be given to
using a three terminal voltage regulator.
Digital Signal Interconnect
T he digital signal lines to the ADV7128 should be isolated as
much as possible from the analog outputs and other analog cir-
cuitry. Digital signal lines should not overlay the analog power
plane.
Due to the high clock rates used, long clock lines to the
ADV7128 should be avoided so as to minimize noise pickup.
Any active pull-up termination resistors for the digital inputs
should be connected to the regular PCB power plane (V
CC
), and
not the analog power plane.
Analog Signal Interconnect
T he ADV7128 should be located as close as possible to the out-
put connectors thus minimizing noise pickup and reflections
due to impedance mismatch.
T he video output signals should overlay the ground plane, and
not the analog power plane, thereby maximizing the high fre-
quency power supply rejection.
For optimum performance, the analog outputs should each have
a source termination resistance to ground of 75
(doubly ter-
minated 75
configuration). T his termination resistance should
be as close as possible to the ADV7128 so as to minimize
reflections.
Additional information on PCB design is available in an applica-
tion note entitled “Design and Layout of a Video Graphics Sys-
tem for Reduced EMI.” T his application note is available from
Analog Devices, publication number E1309-15-10/89.
OUT LINE DIME NSIONS
Dimensions shown in inches and (mm).
SOIC (R-28)
PIN 1
0.299 (7.60)
0.291 (7.40)
15
14
1
28
0.419 (10.65)
0.394 (10.00)
0.012 (0.32)
0.009 (0.23)
0.05 (1.27)
0.016 (0.40)
0.104 (2.65)
0.093 (2.35)
0.011 (0.30)
0.004 (0.10)
0.019 (0.49)
0.014 (0.35)
0.050 (1.27)
BSC
0.712 (18.10)
0.697 (17.70)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADV7128KR80-REEL | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:SINGLE,10-BIT VIDEO DAC - Tape and Reel |
| ADV7128KRZ30 | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W |
| ADV7128KRZ50 | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W |
| ADV7128KRZ80 | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W 制造商:Analog Devices 功能描述:SGLE 10B VIDEO DAC |
| ADV7129 | 制造商:AD 制造商全稱:Analog Devices 功能描述:192-Bit, 360 MHz True-Color Video DAC with Onboard PLL |
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