參數(shù)資料
型號: ADSP-BF548MBBCZ-5M
廠商: Analog Devices Inc
文件頁數(shù): 92/100頁
文件大?。?/td> 0K
描述: IC DSP 533MHZ W/DDR 400CSPBGA
標(biāo)準(zhǔn)包裝: 1
系列: Blackfin®
類型: 定點
接口: CAN,SPI,SSP,TWI,UART,USB
時鐘速率: 533MHz
非易失內(nèi)存: 外部
芯片上RAM: 260kB
電壓 - 輸入/輸出: 2.50V,3.30V
電壓 - 核心: 1.25V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 400-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 400-CSPBGA(17x17)
包裝: 托盤
配用: ADSP-3PARCBF548M01-ND - MODULE BOARD BF548
ADSP-3PARCBF548E02-ND - KIT DEV STARTER BF548
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Rev. C
|
Page 91 of 100
|
February 2010
THERMAL CHARACTERISTICS
To determine the junction temperature on the application
printed circuit board use
where:
TJ =junction temperature ( C)
TCASE = case temperature ( C) measured by customer at top cen-
ter of package.
Ψ
JT = from Table 71
PD = power dissipation. (See Table 18 on Page 38 for a method
to calculate PD.)
Values of
θ
JA are provided for package comparison and printed
circuit board design considerations.
θ
JA can be used for a first
order approximation of TJ by the equation
where:
TA = ambient temperature ( C)
Table 64 lists values for
θ
JC and θJB parameters. These values are
provided for package comparison and printed circuit board
design considerations. Airflow measurements in Table 64 com-
ply with JEDEC standards JESD51-2 and JESD51-6, and the
junction-to-board measurement complies with JESD51-8. The
junction-to-case measurement complies with MIL-STD-883
(Method 1012.1). All measurements use a 2S2P JEDEC
testboard.
Figure 84. Typical Fall Time (10% to 90%) vs. Load Capacitance for
Driver E at VDDEXT = 2.7 V
Figure 85. Typical Fall Time (10% to 90%) vs. Load Capacitance for
Driver E at VDDEXT = 3.65 V
LOAD CAPACITANCE (pF)
F
ALL
TIME
ns
(10%
to
90%)
132
128
124
120
116
108
0
50
100
150
200
250
FALL TIME
112
LOAD CAPACITANCE (pF)
FALL
TIME
ns
(10%
to
90%)
124
120
116
112
108
100
0
50
100
150
200
250
FALL TIME
104
Table 64. Thermal Characteristics, 400-Ball CSP_BGA
Parameter
Condition
Typical
Unit
θ
JA
0 linear m/s air flow
18.4
C/W
1 linear m/s air flow
15.8
C/W
2 linear m/s air flow
15.0
C/W
θ
JB
9.75
C/W
θ
JC
6.37
C/W
Ψ
JT
0 linear m/s air flow
0.27
C/W
1 linear m/s air flow
0.60
C/W
2 linear m/s air flow
0.66
C/W
T
J
T
CASE
Ψ
JT
P
D
×
()
+
=
T
J
T
A
θ
JA
P
D
×
()
+
=
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