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THERMAL CHARACTERISTICS

RECOMMENDED OPERATING CONDITIONS

(1)

TAS5414A, TAS5424A

SLOS535A – JULY 2007 – REVISED FEBRUARY 2008

PARAMETER

VALUE (Typical)

UNIT

Junction-to-case (heat slug) thermal

1

°C/W

resistance, DKD package

Junction-to-case (heat slug) thermal

1.2

°C/W

resistance, PHD package

Junction-to-ambient thermal resistance

°C/W

is not specified. See the Thermal Information section.

Exposed pad dimensions, DKD package

13.8

× 5.8

mm

Exposed pad dimensions, PHD package

8

× 8

mm

MIN

TYP

MAX

UNIT

DC supply voltage range relative to PGND

8

14.4

22

V

6

14.4

26.5

V

(2)

Analog audio input signal level (TAS5414A)

AC-coupled input voltage

0

Vrms

Analog audio input signal level (TAS5424A)

AC-coupled input voltage

0

Vrms

(2)

Audio frequency for tweeter detect

10

20

25

kHz

Ambient temperature

–40

105

°C

An adequate heat sink is required

Junction temperature

–40

115

°C

Nominal speaker load impedance

2

4

Ω

Pullup voltage supply (for open-drain logic outputs)

3

3.3 or 5

5.5

V

Resistor connected between

External pullup resistor on open-drain logic outputs

10

50

100

k

Ω

supply

1

5

10

k

Ω

10

100

k

Ω

slave 1 or slave 2, connected between D_BYP and

SGND pins

External resistance on REXT pin

1% tolerance required

19.8

20

20.2

k

Ω

External capacitance on D_BYP pin

10

120

nF

External capacitance on A_BYP pin

10

120

nF

External capacitance to analog input pin in series

1

µF

with input signal

Flying capacitor on charge pump

0.47

1

1.5

µF

Charge pump capacitor

0.47

1

1.5

µF

Capacitance on MUTE pin

3.3

330

nF

Allowed loading capacitance on OSC_SYNC pin

5

pF

(1)

The Recommended Operating Conditions table specifies only that the device is functional in the given range. See the Electrical

Characteristics table for specified performance limits.

(2)

Signal input for full unclipped output with gains of 32 dB, 26 dB, 20 dB, and 12 dB

(3)

Maximum recommended input voltage is determined by the gain setting.

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Product Folder Link(s): TAS5414A TAS5424A