参数资料
型号: ADSP-21489BSWZ-3B
厂商: Analog Devices Inc
文件页数: 53/68页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 176LQFP
标准包装: 1
系列: SHARC®
类型: 浮点
接口: EBI/EMI,DAI,I²C,SPI,SPORT,UART/USART
时钟速率: 350MHz
非易失内存: 外部
芯片上RAM: 5Mb
电压 - 输入/输出: 3.30V
电压 - 核心: 1.10V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 176-LQFP 裸露焊盘
供应商设备封装: 176-LQFP-EP(24x24)
包装: 托盘
Rev. B
|
Page 57 of 68
|
March 2013
Note that the thermal characteristics values provided in
Table 56 and Table 57 are modeled values.
Thermal Diode
The ADSP-2148x processors incorporate thermal diode/s to
monitor the die temperature. The thermal diode of is a
grounded collector, PNP Bipolar Junction Transistor (BJT). The
THD_P pin is connected to the emitter and the THD_M pin is
connected to the base of the transistor. These pins can be used
by an external temperature sensor (such as ADM 1021A or
LM86 or others) to read the die temperature of the chip.
The technique used by the external temperature sensor is to
measure the change in VBE when the thermal diode is operated
at two different currents. This is shown in the following
equation:
where:
n = multiplication factor close to 1, depending on process
variations
k = Boltzmann’s constant
T = temperature (°C)
q = charge of the electron
N = ratio of the two currents
The two currents are usually in the range of 10 micro Amperes
to 300 micro Amperes for the common temperature sensor
chips available.
Table 58 contains the thermal diode specifications using the
transistor model.
Table 56. Thermal Characteristics for 100-Lead LQFP_EP
Parameter
Condition
Typical
Unit
JA
Airflow = 0 m/s
17.8
°C/W
JMA
Airflow = 1 m/s
15.4
°C/W
JMA
Airflow = 2 m/s
14.6
°C/W
JC
2.4
°C/W
JT
Airflow = 0 m/s
0.24
°C/W
JMT
Airflow = 1 m/s
0.37
°C/W
JMT
Airflow = 2 m/s
0.51
°C/W
Table 57. Thermal Characteristics for 176-Lead LQFP_EP
Parameter
Condition
Typical
Unit
JA
Airflow = 0 m/s
16.9
°C/W
JMA
Airflow = 1 m/s
14.6
°C/W
JMA
Airflow = 2 m/s
13.8
°C/W
JC
2.3
°C/W
JT
Airflow = 0 m/s
0.21
°C/W
JMT
Airflow = 1 m/s
0.32
°C/W
JMT
Airflow = 2 m/s
0.41
°C/W
V
BE
n
kT
q
------
In(N)
=
Table 58. Thermal Diode Parameters – Transistor Model1
Symbol
Parameter
Min
Typ
Max
Unit
IFW
2
Forward Bias Current
10
300
μA
IE
Emitter Current
10
300
μA
nQ
3, 4
Transistor Ideality
1.012
1.015
1.017
RT
Series Resistance
0.12
0.2
0.28
Ω
1 See Engineer-to-Engineer Note “Using the On-Chip Thermal Diode on Analog Devices Processors” (EE-346).
2 Analog Devices does not recommend operation of the thermal diode under reverse bias.
3 Specified by design characterization.
4 The ideality factor, nQ, represents the deviation from ideal diode behavior as exemplified by the diode equation: IC = IS × (e qVBE/nqkT –1) where IS = saturation current,
q = electronic charge, VBE = voltage across the diode, k = Boltzmann Constant, and T = absolute temperature (Kelvin).
5 The series resistance (RT) can be used for more accurate readings as needed.
相关PDF资料
PDF描述
ADSP-2171BSTZ-133 IC DSP CONTROLLER 16BIT 128TQFP
ADSP-2181KSZ-160 IC DSP CONTROLLER 16BIT 128-PQFP
ADSP-2183KCA-210 IC DSP CONTROLLER 16BIT 144MBGA
ADSP-2184BSTZ-160 IC DSP CONTROLLER 16BIT 100LQFP
ADSP-2185BSTZ-133 IC DSP CONTROLLER 16BIT 100TQFP
相关代理商/技术参数
参数描述
ADSP-21489BSWZ-4A 功能描述:IC CCD SIGNAL PROCESSOR 100LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP(数字式信号处理器) 系列:SHARC® 标准包装:40 系列:TMS320DM64x, DaVinci™ 类型:定点 接口:I²C,McASP,McBSP 时钟速率:400MHz 非易失内存:外部 芯片上RAM:160kB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:0°C ~ 90°C 安装类型:表面贴装 封装/外壳:548-BBGA,FCBGA 供应商设备封装:548-FCBGA(27x27) 包装:托盘 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA
ADSP-21489BSWZ-4B 功能描述:IC CCD SIGNAL PROCESSOR 176LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP(数字式信号处理器) 系列:SHARC® 标准包装:40 系列:TMS320DM64x, DaVinci™ 类型:定点 接口:I²C,McASP,McBSP 时钟速率:400MHz 非易失内存:外部 芯片上RAM:160kB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:0°C ~ 90°C 安装类型:表面贴装 封装/外壳:548-BBGA,FCBGA 供应商设备封装:548-FCBGA(27x27) 包装:托盘 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA
ADSP-21489BSWZ-AX 制造商:Analog Devices 功能描述:X GRADE SHARC PROCESSOR - Trays
ADSP-21489BSWZ-BX 制造商:Analog Devices 功能描述:X GRADE SHARC PROCESSOR - Trays
ADSP-21489KSWZ-3A 功能描述:IC CCD SIGNAL PROCESSOR 100LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP(数字式信号处理器) 系列:SHARC® 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI,以太网,RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA,FCBGA 供应商设备封装:431-FCPBGA(20x20) 包装:托盘