参数资料
型号: AT84AD004VTD
厂商: ATMEL CORP
元件分类: ADC
英文描述: DUAL 8 BIT 500 MSPS ADC
中文描述: 2-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP144
封装: 20 X 20 MM, 1.4 MM HEIGHT, LQFP-144
文件页数: 55/58页
文件大小: 1023K
代理商: AT84AD004VTD
55
AT84AD004
5390A–BDC–06/04
Thermal Resistance from
Junction to Ambient
The thermal resistance from the junction to ambient is 25.2
°
C/W typical.
Note:
In order to keep the ambient temperature of the die within the specified limits of the
device grade (that is T
A
max = 70°C in commercial grade and 85°C in industrial grade)
and the die junction temperature below the maximum allowed junction temperature of
105°C, it is necessary to operate the dual ADC in air flow conditions (1m/s recom-
mended).
In still air conditions, the junction temperature is indeed greater than the maximum
allowed T
J
.
- T
J
= 25.2°C/W x 1.4W + T
A
= 35.28 + 70 = 105.28°C for commercial grade devices
- T
J
= 25.2°C/W x 1.4W + T
A
= 35.28 + 85 = 125.28°C for industrial grade devices
Thermal Resistance from
Junction to Board
The thermal resistance from the junction to the board is 13
°
C/W typical.
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