CS48540-CQZ Cirrus Logic Inc, CS48540-CQZ Datasheet - Page 11

• Manufacturer Part Number: CS48540-CQZ
• Description: Audio DSPs High Perform. 32-Bit Audio Decoder DSP
• Manufacturer: Cirrus Logic Inc

Specifications of CS48540-CQZ

• Operating Supply Voltage: 1.8 V
• Mounting Style: SMD/SMT
• Package / Case: LQFP-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.4 Power Supply Characteristics
(Measurements performed under operating conditions)
5.5 Thermal Data (48-Pin LQFP)
DS734F3
Operational Power Supply Current:
VDD: Core and I/O operating
VDDA: PLL operating
VDDIO: With most ports operating
Total Operational Power Dissipation:
Standby Power Supply Current:
VDD: Core and I/O not clocked
VDDA: PLL halted
VDDIO: All connected I/O pins 3-stated by other ICs in system
Total Standby Power Dissipation:
Junction Temperature
Thermal Resistance (Junction to Ambient)
Thermal Resistance (Junction to Top of Package)
1. Dependent on application firmware and DSP clock speed.
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 &
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 &
3. To calculate the die temperature for a given power dissipation
4. To calculate the case temperature for a given power dissipation
T
T
bottom layers.
bottom layers and 0.5-oz. copper covering 90 % of the internal power plane & ground plane layers.
c
j
= Ambient Temperature + [ (Power Dissipation in Watts) *
=
T
j
- [ (Power Dissipation in Watts) *
Parameter
1
Parameter
ψ
jt
Copyright 2009 Cirrus Logic, Inc.
]
Four-layer Board
Four-layer Board
Two-layer Board
Two-layer Board
CONFIDENTIAL
θ
ja
]
1
2
3
4
Symbol
ψ
θ
T
ja
j
jt
Min
-
-
-
-
-
Min
-
-
-
-
-
-
-
32-bit Audio Decoder DSP Family
63.5
0.70
0.64
Typ
54
-
CS485xx Family Data Sheet
Typ
203
480
100
348
27
50
8
1
Max
125
-
-
-
-
Max
-
-
-
-
-
-
-
°C / Watt
°C / Watt
Unit
°C
Unit
mW
mA
mA
mA
μW
μA
μA
μA
11