TDA8740 datasheet(9/24 Pages) PHILIPS

9 / 24 page

October 1994

Philips Semiconductors

Product speciﬁcation

Satellite sound circuit with noise reduction

TDA8740; TDA8740H

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Notes

1. All voltages referenced to ground pins 9 and 34 (4 and 30).

2. All voltages referenced to ground pins 9 and 34 (4 and 30). These voltages must not exceed VP or maximum value

at any time.

THERMAL CHARACTERISTICS

DC CHARACTERISTICS

All voltages referenced to ground at pins 9 and 34 (4 and 30). Measured in test circuit Fig.4; VP =12V; Tamb =25 °C;

∆fM = ∆fS1 = ∆fS2 = 0 kHz (no modulation); fOM = 6.5 MHz; fOS1 = 7.02 MHz; fOS2 = 7.20 MHz; HF level at pin 18 (14):

40 mV (RMS); HF level at selected secondary inputs: 20 mV (RMS); MCS = logic 0 [V7 (V2)=0V];

SCD = logic 0 [V11 (V6) = 0 V]; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

supply voltage

note 1

13.2

voltage on pins 2, 4, 6, 8, 10, 12, 14 and 16

(1, 3, 5, 7, 9, 11, 40 and 42)

note 2

voltage on pins 3, 5, 11, 13, 15, 17, 20, 21, 23 to 26, 31, 33,

35, 37, 40, 41, and 42 (6, 8, 10, 13, 16, 17, 19, 20 to 22, 27,

29, 31, 33, 36, 37, 38, 41 and 43)

note 2

voltage on pins 7, 18, 19, 27 to 30, 32, 36, 38 and 39

(2, 14, 15, 23 to 26, 28, 32, 34 and 35)

note 1

Tstg

storage temperature

−55

+150

°C

Tamb

operating ambient temperature

−20

+70

°C

SYMBOL

PARAMETER

VALUE

UNIT

Rth j-a

thermal resistance from junction to ambient in free air

SDIP42

K/W

QFP44

K/W

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

supply voltage

8.0

13.2

supply current

−

Ptot

total power dissipation

−−

600

voltage on pins 20, 21, 23, 24, 25, 27, 28, 30, 32, 33, 35, 36

and 38 (16, 17, 19, 20, 21, 23, 24, 26, 28, 29, 31, 32 and 34)

−

3.8

−

VREF

input reference voltage on pin 19 (15)

3.7

3.8

3.9

voltage on pins 2, 4, 6, 8, 10, 12, 14 and 16

(1, 3, 5, 7, 9, 11, 40 and 42)

−

VCDCL,CDCR

voltage on pins 40 and 42 (36 and 38)

−

2.7

−

VCDCM

voltage on pin 41 (37)

−

2.8

−

IIN3

input current at pin 18 (14)

−−

µA

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