參數(shù)資料
型號: ADSP-21477KSWZ-1A
廠商: Analog Devices Inc
文件頁數(shù): 63/76頁
文件大?。?/td> 0K
描述: IC DSP SHARK 200MHZ 100LQFP
標準包裝: 1
系列: SHARC®
類型: 浮點
接口: DAI,DPI,I²C,SPI,SPORT,UART/USART
時鐘速率: 200MHz
芯片上RAM: 2Mb
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.20V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP 裸露焊盤
供應商設備封裝: 100-LQFP-EP(14x14)
包裝: 托盤
Rev. C
|
Page 66 of 76
|
July 2013
THERMAL CHARACTERISTICS
The processor is rated for performance over the temperature
Table 58 airflow measurements comply with JEDEC standards
JESD51-2 and JESD51-6 and the junction-to-board measure-
ment complies with JESD51-8. Test board design complies with
JEDEC standards JESD51-7 (PBGA). The junction-to-case mea-
surement complies with MIL- STD-883. All measurements use a
2S2P JEDEC test board.
To determine the junction temperature of the device while on
the application PCB, use:
where:
TJ = junction temperature (°C)
TCASE = case temperature (°C) measured at the top center of the
package
JT = junction-to-top (of package) characterization parameter is
the typical value from Table 58
PD = power dissipation
Values of θJA are provided for package comparison and PCB
design considerations. θJA can be used for a first order approxi-
mation of TJ by the equation:
where:
TA = ambient temperature °C
Values of θJC are provided for package comparison and PCB
design considerations when an external heatsink is required.
Note that the thermal characteristics values provided in
Table 58 are modeled values.
Figure 51. Typical Output Rise/Fall Time (20% to 80%,
VDD_EXT = Min)
Figure 52. Typical Output Delay or Hold vs. Load Capacitance
(at Ambient Temperature)
LOAD CAPACITANCE (pF)
6
0
10
4
2
RISE
AND
FALL
TIMES
(ns)
25
200
150
50
75
100
125
175
y = 0.0567x + 0.482
y = 0.0367x + 0.4502
y = 0.0314x + 0.5729
TYPE A DRIVE FALL
TYPE A DRIVE RISE
TYPE B DRIVE RISE
TYPE B DRIVE FALL
8
12
14
y = 0.0748x + 0.4601
LOAD CAPACITANCE (pF)
3
0
3.5
2
1
0.5
1.5
RISE
AND
FALL
DELAY
(ns)
2.5
y = 0.015x + 1.4889
y = 0.0088x + 1.6008
y = 0.0199x + 1.1083
y = 0.0102x + 1.2726
0
25
200
150
50
75
100
125
175
TYPE A DRIVE FALL
TYPE A DRIVE RISE
TYPE B DRIVE RISE
TYPE B DRIVE FALL
4
4.5
T
J
T
CASE
JT
P
D
+
=
Table 57. Thermal Characteristics for 88-Lead LFCSP_VQ
Parameter
Condition
Typical
Unit
JA
Airflow = 0 m/s
22.6
°C/W
JMA
Airflow = 1 m/s
18.2
°C/W
JMA
Airflow = 2 m/s
17.3
°C/W
JC
7.9
°C/W
JT
Airflow = 0 m/s
0.22
°C/W
JMT
Airflow = 1 m/s
0.36
°C/W
JMT
Airflow = 2 m/s
0.44
°C/W
Table 58. Thermal Characteristics for 100-Lead LQFP_EP
Parameter
Condition
Typical
Unit
θJA
Airflow = 0 m/s
18.1
°C/W
θJMA
Airflow = 1 m/s
15.5
°C/W
θJMA
Airflow = 2 m/s
14.6
°C/W
θJC
2.4
°C/W
ΨJT
Airflow = 0 m/s
0.22
°C/W
ΨJMT
Airflow = 1 m/s
0.36
°C/W
ΨJMT
Airflow = 2 m/s
0.50
°C/W
Table 59. Thermal Characteristics for 196-Ball CSP_BGA
Parameter
Condition
Typical
Unit
θJA
Airflow = 0 m/s
29.0
°C/W
θJMA
Airflow = 1 m/s
26.1
°C/W
θJMA
Airflow = 2 m/s
25.1
°C/W
θJC
8.8
°C/W
ΨJT
Airflow = 0 m/s
0.23
°C/W
ΨJMT
Airflow = 1 m/s
0.42
°C/W
ΨJMT
Airflow = 2 m/s
0.52
°C/W
T
J
T
A
JA
P
D
+
=
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