CS497014 datasheet(10/31 Pages) CIRRUS

Part #	CS497014

Description	High Definition Audio Decoder DSP Family with Dual 32-bit Engine Technology

PDF	31 Pages

Scroll/Zoom	100%

Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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10 / 31 page

CS4970x4 Data Sheet

32-bit High Definition Audio Decoder DSP Family

DS752F1

5.5 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.

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.

To calculate the die temperature for a given power dissipation



j = Ambient Temperature + [ (Power Dissipation in Watts) * ja ]

To calculate the case temperature for a given power dissipation



c = j - [ (Power Dissipation in Watts) *  jt

Parameter

Symbol

Min

Typ

Max

Unit

Thermal Resistance (Junction to Ambient)

Two-layer Board1

Four-layer Board2



—

°C / Watt

Thermal Resistance (Junction to Top of Package)

Two-layer Board1

Four-layer Board2



—

.45

.39

—

°C / Watt

CS497014 Datasheet(PDF) 10 Page - Cirrus Logic