1995 May 23

13

Philips Semiconductors

Preliminary specification

TV and VTR stereo/dual sound processor

with digital identification

TDA9847

Notes to the characteristics

2. Without de-emphasis capacitors with respect to nominal gain.

3. In dual mode: A (B)-signal into B (A) channel; in stereo mode: R-signal into left channel; L-signal = 0.

noise.

6. Identification window is defined as twice the pull-in frequency range (lower plus upper side) of identification PLL

(steady detection) plus window increase due to integrator (fluctuating detection).

total identification time on

stereo; note 7

0.35

−

2.0

s

dual; note 7

0.35

−

2.0

s

total identification time off

stereo; note 8

0.60

−

1.5

s

dual; note 8

0.60

−

1.5

s

LED (pins 18 and 19)

output voltage

LED off

−−

8.8

V

output voltage

LED on

−−

0.7

V

input current

LED off

−−

1

µA

input current

LED on

−−

12

mA

Control input ports C1 to C3 (pins 1, 2 and 24)

LOW level input voltage

0

−

0.8

V

HIGH level input voltage

2.0

5.0

8.8

V

LOW level input current

−−

-1

µA

HIGH level input current

−−

1

µA

Control input Port C4 (pin 3)

LOW level input voltage

0

−

0.8

V

3-state level input voltage

1.5

1.8

2.1

V

HIGH level input voltage

2.8

5.0

8.8

V

LOW level input current

−−

−1

µA

3-state level input current

−−

−1

µA

HIGH level input current

−−

1

µA

HIGH level hold time

see Fig.5

5

−−

µs

LOW level hold time

see Fig.5

5

−−

µs

HIGH level set-up time

see Fig.5

0.25

−−

µs

LOW level set-up time

see Fig.5

0.25

−−

µs

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT