TDA9859 데이터 시트보기 (PDF) - NXP Semiconductors.

부품명

상세내역

일치하는 목록

TDA9859

Universal hi-fi audio processor for TV

NXP Semiconductors. 

Philips Semiconductors

Universal hi-fi audio processor for TV

Preliminary specification

TDA9859

FUNCTIONAL DESCRIPTION

The TDA9859 consists of the following functions:

• Source select switching block

• Loudspeaker channel with effect controls

• Two port outputs for general purpose

• I2C-bus control.

Source select switching block

The TDA9859 selects and switches the input signals from

three stereo or six mono sources MAIN, AUX and SCART

(see Fig.1) to the outputs SCART and loudspeaker

(crossbar-switching; Table 4). The main channel (LINE

outputs) is looped outside the circuit (from pins 9 and 24 to

pins 10 and 23), so signals can be used as LINE output or

a surround sound decoder can be inserted.

Loudspeaker channel

Volume control is divided into volume control common and

volume control left/right. The common part

(−40 to +15 dB) controls the left and right channels

simultaneously; the left/right part (−23 to 0 dB) controls the

volume of left and right channels independently. Treble

control provides a control range from −12 to +12 dB and

bass control from −12 to +15 dB. Extended bass control

can be provided by an external T-network (see Fig.1) from

−15 to +19 dB (2 dB steps).

Effect controls

‘Linear stereo’, ‘stereo with spatial effect (30% or 52%

anti-phase crosstalk)’ and ‘forced mono with or without

pseudo-stereo effect’ are controlled by three bits. A muting

of 85 dB is provided.

I2C-bus control

All settings of control are stored in subaddress registers.

Data transmission is simplified by auto-incrementing the

subaddresses. The on-chip Power-on reset sets the mute

bit to active, so both the SCART and the loudspeaker

outputs are muted.

The muting can be switched off by writing a ‘0’ (non-muted)

into the mute control bits.

LIMITING VALUES

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

SYMBOL

PARAMETER

VP

supply voltage (pin 6)

Vn

voltage on all pins, ground excluded

IO

output current

at LOUT and SCOUT pins

at port output pins

Ptot

Tamb

Tstg

Ves

total power dissipation

operating ambient temperature

storage temperature

electrostatic handling for all pins; note 1

electrostatic handling for all pins; note 2

MIN.

0

0

MAX.

10

VP

−

2.5

−

1.5

−

850

0

70

−25

+150

−

±300

−

±2 000

Notes

1. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor (Machine Model).

2. Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor (Human Body Model).

UNIT

V

V

mA

mA

mW

°C

°C

V

V

THERMAL CHARACTERISTICS

SYMBOL

PARAMETER

Rth(j-a)

thermal resistance from junction to ambient

CONDITIONS

in free air

VALUE

60

UNIT

K/W

1997 Sep 01

5

Share Link: