TDA9873HS datasheet(9/40 Pages) PHILIPS

9 / 40 page

2000 Apr 04

Philips Semiconductors

Product speciﬁcation

Multistandard dual carrier stereo sound decoder

TDA9873H

Power supply

The different supply voltages and currents required for the

analog and digital circuits are derived from two internal

band gap reference circuits. One of the band gap circuits

internally generates a voltage of approximately 2.4 V,

independent of the supply voltage and temperature.

A voltage regulator circuit, connected to this voltage,

produces a constant voltage of 3.55 V which is used as an

internal reference voltage. The AF reference voltage Vref is

⁄2VCC. Good ripple rejection is achieved with the external

capacitor Cref =47 µF (16 V) in combination with an

internal resistor at pin 6. No additional DC load for 1

⁄2VCC

is allowed.

Analog ground (AGND, pin 7) and digital ground

(DGND, pin 27) should be connected directly to the IC.

Pin 13 is internal analog ground.

Power-on reset

When a Power-on reset is activated by switching on the

supply voltage or because of a supply voltage breakdown,

the 117/274 Hz DPLL, 117/274 Hz integrator and the

registers will be reset. Both AF channels (main and mono)

are muted. The ports are in position HIGH. Gain stereo

adjustment is 0 dB. Auto mute is active. For detailed

information see Table 12.

LIMITING VALUES

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

Notes

1. ICC = 60 mA; Tamb =70 °C.

2. Machine model class B: C = 200 pF; L = 0.75

µH; R = 0 Ω.

3. Human body model class B: C = 100 pF; R = 1.5 k

Ω.

THERMAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

VCC

supply voltage (pin 28)

maximum chip

temperature of 125

°C;

note 1

6.8

input voltage at:

pins 1 to 6, 8 to 12, 14 to 26 and 31 to 44

VCC

pins 29 to 30

−0.3

VCC

Tstg

storage temperature

−25

+150

°C

Tamb

ambient temperature

−20

+70

°C

Ves

electrostatic handling voltage

note 2

−150

+150

note 3

−2500

+2500

SYMBOL

PARAMETER

CONDITIONS

VALUE

UNIT

Rth(j-a)

thermal resistance from junction to ambient in free air

TDA9873H

K/W

TDA9873HS

K/W

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