CS48LV13-CNZR Просмотр технического описания (PDF) - Cirrus Logic

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CS48LV13-CNZR

Ultralow Power HD Voice Processors, Featuring SoundClear® Technology

Cirrus Logic 

4.5 Thermal Characteristics

4.5 Thermal Characteristics

Parameter

QFN junction-to-ambient thermal impedance1,2

WLCSP junction-to-ambient thermal impedance1,2

QFN junction-to-ambient thermal impedance1,3

WLCSP junction-to-ambient thermal impedance1,3

Symbol

Min

Typ

Max

Units

4-layer board

JA

—

28

—

°C/Watt

4-layer board

JA

—

47

—

°C/Watt

2-layer board

JA

—

85

—

°C/Watt

2-layer board

JA

—

89

—

°C/Watt

1. To calculate the die temperature for a given power dissipation:

Tj = Ambient temperature + [ (Power Dissipation in Watts) * ja ]

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 layer

3.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.

4.6 Digital Interface Specifications and Characteristics

Test Conditions (unless otherwise specified): VL = 1.8 V–3.3 V, VD = 1.0 V–1.2 V; GND = 0 V; TA = +25°C.

Parameters

Test Conditions

Symbol

Input leakage current1

Internal weak pull-up2

—

—

Iin

—

—

—

Input capacitance 3

—

—

—

VL logic High-level output voltage4

Low-level output voltage4

High-level output voltage4

Low-level output voltage4

High-level input voltage

Low-level input voltage

VL = 3.3 V

VL = 3.3 V

VL = 1.8 V

VL = 1.8 V

—

—

IOH = 2 mA

IOL = 2 mA

IOH = 1 mA

IOL = 1 mA

—

—

VOH

VOL

VOH

VOL

VIH

VIL

1.Specification is per pin, and does not include current through pull-up.

2.The effective pull-up value decreases (more current is provided) with increased VL.

3.This value is by design and not a tested parameter.

4.This value tested with 2-mA drivers enabled on pins.

Min

Typ

Max

—

—

500

15

—

60

—

10

—

VL–0.4

—

—

—

—

0.20•VL

VL–0.4

—

—

—

—

0.20•VL

0.76•VL

—

—

—

—

0.30•VL

Units

nA

k

pF

V

V

V

V

V

V

Figure 4-1. Internal Weak Pull-up

15

DS1057F1

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