Datasheet > 842023AGLF

842023AGLF

更新时间： 2024-01-13 22:36:26

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管
页数	文件大小	规格书
12页	757K
描述
Clock Generator, PDSO8

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842023AGLF 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
Reach Compliance Code：	compliant	风险等级：	5.84
JESD-30 代码：	R-PDSO-G8	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装等效代码：	TSSOP8,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	电源：	2.5/3.3 V
认证状态：	Not Qualified	子类别：	Clock Generators
最大压摆率：	84 mA	表面贴装：	YES
温度等级：	COMMERCIAL	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

842023AGLF 数据手册

ICS842023

FEMTOCLOCK™CRYSTAL-TO-HSTL CLOCK GENERATOR

PRELIMINARY

Power Considerations

This section provides information on power dissipation and junction temperature for the ICS842023.

Equations and example calculations are also provided.

1. Power Dissipation.

The total power dissipation for the ICS842023 is the sum of the core power plus the power dissipated in the load(s).

The following is the power dissipation for V_DD= 3.3V + 5% = 3.465V, which gives worst case results.

NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.

•

Power (core)_MAX= V_{DD_MAX}* (I_{DD_MAX}+ I_{DDA_MAX}) = 3.465V * (89mA + 9mA) = 339.57mW

Power (outputs)_MAX= 94.32mW/Loaded Output pair

Total Power__MAX(3.465V, with all outputs switching) = 339.57mW + 94.32mW = 433.89mW

2. Junction Temperature.

Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad and directly affects the reliability of the device.

The maximum recommended junction temperature for HiPerClockS devices is 125°C.

The equation for Tj is as follows: Tj = θ_JA* Pd_total + T_A

Tj = Junction Temperature

θ_JA= Junction-to-Ambient Thermal Resistance

Pd_total = Total Device Power Dissipation (example calculation is in section 1 above)

T_A= Ambient Temperature

In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance θ_JAmust be used. Assuming a moderate

air flow of 1 meter per second and a multi-layer board, the appropriate value is 125.5°C/W per Table 6 below.

Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:

70°C + 0.434W * 125.5°C/W = 124.4°C. This is below the limit of 125°C.

This calculation is only an example. Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow and the type

of board (single layer or multi-layer).

Table 6. Thermal Resistance θ_JAfor 8 Lead TSSOP, Forced Convection

θ_JAvs. Air Flow

Meters per Second

2.5

Multi-Layer PCB, JEDEC Standard Test Boards

129.5°C/W

125.5°C/W

123.5°C/W

IDT™ / ICS™ HSTL CLOCK GENERATOR

ICS842023AG REV. B JULY 15, 2008

1...5 6 789 10 11 12

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与842023AGLF相关器件

型号	品牌	获取价格	描述	数据表
842023AGLFT	IDT	获取价格	Clock Generator, PDSO8
842023AGT	IDT	获取价格	Clock Generator, PDSO8
842023BGLF	IDT	获取价格	Femtoclockâ¢ Crystal-to-HSTL Clock Generator
842023BGLFT	IDT	获取价格	Femtoclockâ¢ Crystal-to-HSTL Clock Generator
842031AGI-01	IDT	获取价格	Clock Generator
8420-51	ASM-SENSOR	获取价格	MEMORY HiLOGGER
84206L	SWITCH	获取价格	Toggle Switch, DPDT, Latched, Solder Terminal, Lever Actuator, Panel Mount,
8421	FILTRAN	获取价格	CHOKE Current Compensated Chokes
8421002AGI	IDT	获取价格	Clock Generator, 226.66MHz, PDSO20, 6.50 X 4.40 MM, 0.92 MM HEIGHT, MO-153, TSSOP-20
8421002AGI-01	IDT	获取价格	Clock Generator, 170MHz, PDSO20, 6.50 X 4.40 MM, 0.92 MM HEIGHT, MO-153, TSSOP-20

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