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參數資料
| 型號： | ADS-943MM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | 14-Bit, 3MHz, Low-Distortion Sampling A/D Converters |
| 中文描述： | 14位，3MHz的，低失真的采樣A / D轉換器 |
| 文件頁數： | 5/8頁 |
| 文件大小： | 166K |
| 代理商： | ADS-943MM |
ADS -943
5
THERMAL REQUIREMENTS
All DATEL sampling A/D converters are fully characterized and
specified over operating temperature (case) ranges of 0 to
+70°C and –55 to +125°C. All room-temperature (T
A
= +25°C)
production testing is performed without the use of heat sinks or
forced-air cooling. Thermal impedance figures for each device
are listed in their respective specification tables.
These devices do not normally require heat sinks, however,
standard precautionary design and layout procedures should
be used to ensure devices do not overheat. The ground and
power planes beneath the package, as well as all pcb signal
runs to and from the device, should be as heavy as possible to
help conduct heat away from the package.
Electrically-insulating, thermally-conductive "pads" may be
installed underneath the package. Devices should be soldered
to boards rather than "socketed", and of course, minimal air
flow over the surface can greatly help reduce the package
temperature.
In more severe ambient conditions, the package/junction
temperature of a given device can be reduced dramatically
(typically 35%) by using one of DATEL's HS Series heat sinks.
See Ordering Information for the assigned part number. See
page 1-183 of the DATEL Data Acquisition Components
Catalog for more information on the HS Series. Request
DATEL Application Note AN-8, "Heat Sinks for DIP Data
Converters", or contact DATEL directly, for additional
information.
Figure 4. ADS-943 Timing Diagram
OUTPUT
DATA
Data N Valid
Scale is approximately 20ns per division. Sampling rate = 3MHz.
The start convert positive pulse width must be between either 10 and 110nsec or
160 and 300nsec (when sampling at 3MHz) to ensure proper operation. For sampling
rates lower than 3MHz, the start pulse can be wider than 300nsec, however a minimum
pulse width low of 30nsec should be maintained. A 3MHz clock with a 20nsec positive
pulse width is used for all production testing.
EOC
Data N-1 Valid
Data N+1 Valid
Invalid
Data
283ns typ.
35ns typ.
130ns
1.
2.
Note:
10ns max.
INTERNAL S/H
10ns typ.
Acquisition Time
125ns typ.
208ns typ.
215ns max.
Hold
Conversion Time
120ns min., 130ns typ.,
140ns max.
50ns typ.
30ns typ.
125ns typ.
START
CONVERT
N
N+1
333nsec
20ns typ.
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| ADS-943GC | 14-Bit, 3MHz, Low-Distortion Sampling A/D Converters |
| ADS-951 | 18-Bit, 1MHz, Low-Power Sampling A/D Converters |
| ADS-951MC | 18-Bit, 1MHz, Low-Power Sampling A/D Converters |
| ADS-951ME | 18-Bit, 1MHz, Low-Power Sampling A/D Converters |
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相關代理商/技術參數 |
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| ADS944 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:14-Bit, 5MHz Sampling A/D Converters |
| ADS-944 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:14-Bit 5MHZ Sampling A/D Converters |
| ADS-944/883 | 制造商:Murata Power Solutions 功能描述:ADC Single 2-Step Flash 5Msps 14-bit Parallel 32-Pin TDIP |
| ADS-944MC | 制造商:Murata Power Solutions 功能描述:ADC Single 2-Step Flash 5Msps 14-bit Parallel 32-Pin TDIP |
| ADS-944MM | 制造商:Murata Power Solutions 功能描述:ADC Single 2-Step Flash 5Msps 14-bit Parallel 32-Pin TDIP |
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