TDA8944 datasheet(7/21 Pages) PHILIPS

部件名	TDA8944

功能描述	2 x 7 W stereo Bridge Tied Load BTL audio amplifier

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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Philips Semiconductors

TDA8944J

2 x 7 W stereo BTL audio ampliﬁer

Product speciﬁcation

Rev. 02 — 14 February 2000

7 of 21

9397 750 06861

9.

Limiting values

10. Thermal characteristics

11. Static characteristics

[1]

With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal to the differential

output voltage offset

(∆V

OUT) divided by the load resistance (RL).

[2]

The DC output voltage with respect to ground is approximately 0.5VCC.

[3]

∆VOUT = VOUT+ − VOUT− 

Table 5:

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

no signal

−0.3

+25

V

operating

−0.3

+18

V

VI

input voltage

−0.3

VCC + 0.3

V

IORM

repetitive peak output current

-

2

A

Tstg

storage temperature

non-operating

−55

+150

°C

Tamb

operating ambient temperature

−40

+85

°C

Ptot

total power dissipation

-

18

W

VCC(sc)

supply voltage to guarantee short-circuit

protection

-15

V

Table 6:

Thermal characteristics

Symbol

Parameter

Conditions

Value

Unit

Rth(j-a)

thermal resistance from junction to ambient

in free air

40

K/W

Rth(j-mb)

thermal resistance from junction to mounting base both channels driven

6.9

K/W

Table 7:

Static characteristics

VCC =12V; Tamb =25 °C; RL =8 Ω; VMODE =0V; Vi = 0 V; measured in test circuit Figure 14; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VCC

supply voltage

operating

6

12

18

V

Iq

quiescent supply current

RL = ∞

[1] -

2436mA

Istb

standby supply current

VMODE =VCC

--10

µA

VO

DC output voltage

[2] -6

-V

∆VOUT [3]

differential output voltage offset

-

200

mV

VMODE

mode selection input voltage

operating mode

0

-

0.5

V

mute mode

3

-

VCC − 1.5

V

standby mode

VCC − 0.5

-

VCC

V

IMODE

mode selection input current

0 < VMODE <VCC

--20

µA

类似零件编号 - TDA8944

制造商	部件名	数据表	功能描述
NXP Semiconductors	TDA8944AJ	406Kb / 20P	2 x 7 W BTL audio amplifier with DC gain control Rev. 01-01 March 2002

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