参数资料
型号: CS497024-CVZR
厂商: CIRRUS LOGIC INC
元件分类: 消费家电
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP128
封装: LEAD FREE, LQFP-128
文件页数: 2/19页
文件大小: 454K
代理商: CS497024-CVZR
CS4970x4 Data Sheet
32-bit High Definition Audio Decoder DSP Family
DS752PP10
10
5.5 Thermal Data (144-Pin LQFP)
5.6 Thermal Data (128-pin LQFP)
Notes: 1. Two-layer board is specified as a 76 mm X 114 mm, 1.6 mm thick FR-4 material with 1-oz. copper covering 20% of the top and
bottom layers.
2.
Four-layer board is specified as a 76 mm X 114 mm, 1.6 mm thick FR-4 material with 1-oz. copper covering 20% of the top and
bottom layers and 0.5-oz. copper covering 90% of the internal power plane and ground plane layers.
3.
To calculate the die temperature for a given power dissipation
Τ
j = Ambient Temperature + [ (Power Dissipation in Watts) *
θ
ja ]
4.
To calculate the case temperature for a given power dissipation
Τ
c =
Τ
j - [ (Power Dissipation in Watts) * ψ jt
Parameter
Symbol
Min
Typ
Max
Unit
Thermal Resistance (Junction to Ambient)
Two-layer Board1
Four-layer Board2
θ
ja
48
40
°C / Watt
Thermal Resistance (Junction to Top of Package)
Two-layer Board1
Four-layer Board2
ψ
jt
.39
.33
°C / Watt
Parameter
Symbol
Min
Typ
Max
Unit
Thermal Resistance (Junction to Ambient)
Two-layer Board1
Four-layer Board2
θ
ja
53
44
°C / Watt
Thermal Resistance (Junction to Top of Package)
Two-layer Board1
Four-layer Board2
ψ
jt
.45
.39
°C / Watt
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