TDA9840 데이터 시트보기 (PDF) - Philips Electronics

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TDA9840

TV and VTR stereo/dual sound processor with digital identification and I2C-bus control

Philips Electronics 

Philips Semiconductors

TV and VTR stereo/dual sound processor

with digital identification and I2C-bus control

Product specification

TDA9840

CHARACTERISTICS

VP = 5 V; Tamb = +25 °C; nominal input signal Vi 1, 2 = 0.25 V RMS value (FM: 54% modulation is equivalent to

∆f = ±27 kHz); nominal input signal Vi 3, 4 = 0.5 V RMS value (AM: m = 0.54); nominal output signal Vo 1, 2, 3, 4 = 0.5 V

RMS value; fAF = 1 kHz; Vi pil = 16 mV RMS value; fpil = 54.6875 kHz (identification frequencies: stereo = 117.48 Hz,

dual = 274.12 Hz), 50 µs pre-emphasis; noise measurement in accordance with “CCIR468-3”, working oscillator

frequency fω = 10.008 MHz; currents into the IC positive; measured in test circuit according to Fig.5; unless otherwise

specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

VP

IP

Ptot

Vn(DC)

supply voltage (pin 18)

supply current (pin 18)

total power dissipation

DC voltage

(pins 7 to 15 and 17)

Vref(DC)

lL(DC)

DC reference voltage (pin 6)

DC leakage current (pin 6)

AF Inputs; Vi 1 and Vi 2 (pins 7 and 8)

Vi(rms)

nominal input signal voltage

(RMS value)

Vi(rms)

clipping voltage level

(RMS value)

Gv

AF signal voltage gain

∆Gv (Vo1) stereo control range

54% modulation

THD ≤ 1.5%; note 1

VP = 5 V

VP = 8 V

THD ≤ 1.5%; note 2

VP = 5 V

VP = 8 V

G = Vo/Vi; note 3

only at pin 7

nominal step

∆Gv (Vo2) level control range

maximum 49 steps

only at pin 8

Ri

Rdeem

nominal step

input resistance

internal de-emphasis resistor

(pins 15 and 17)

maximum 9 steps

see Fig.4

4.5

15.5

69.75

1⁄2VP − 0.1

5

16.5

82.5

1⁄2VP

1⁄2VP − 0.1 1⁄2VP

−

−

−

0.25

0.625

1.050

0.780

1.300

5

+2.4

−2.3

−

+2.4

−1.9

−

40

4.25

0.715

1.200

0.900

1.500

6

+2.5

−2.4

0.1

+2.5

−2.0

0.5

50

5.0

8.8

V

20.5

mA

180.4

mW

1⁄2VP + 0.1 V

1⁄2VP + 0.1 V

±1

µA

−

V

−

V

−

V

−

V

−

V

7

dB

+2.6

dB

−2.5

dB

−

dB

+2.6

dB

−2.1

dB

−

dB

60

kΩ

5.75

kΩ

Additional AF input pin (pins 9 and 10)

Vi(rms)

nominal input signal voltage 54% modulation

−

0.5

−

V

(RMS value)

Vi(rms)

clipping voltage level

(RMS value)

THD ≤ 1.5%

VP = 5 V

1.25

1.40

−

V

VP = 8 V

2.10

2.35

−

V

Gv

AF signal voltage gain

G = Vo/Vi; note 3

−1

0

1

dB

Ri

input resistance

40

50

60

kΩ

1998 Jul 03

9

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