TDA9840 datasheet(13/28 Pages) PHILIPS

13 / 28 page

1998 Jul 03

Philips Semiconductors

Product speciﬁcation

TV and VTR stereo/dual sound processor

with digital identiﬁcation and I2C-bus control

TDA9840

Notes

1. Input control amplifiers with

∆Gv = 0 dB.

2. Input control amplifiers with

∆Gv = −2 dB.

3. Vo = 0.5 V RMS value; f = 1 kHz; input control amplifiers with ∆Gv = 0 dB.

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

5. In dual mode: A (B)-signal into B (A) channel.

In stereo mode: R-signal into left channel; L-signal = 0.

6. Test procedure tbf (same as TDA9855).

7. Tuner input signal, measured with PCALH reference front end (1

⁄2EMF, 75 Ω, 2T/20T/white bar, 100% video) and

PC/SC1 = 13 dB; PC/SC2 = 20 dB. The pilot band-pass has to be aligned.

8. Bandwidth of the pilot BP-filter B−3dB = 1.2 kHz. Vi2 input driven with identification-modulated pilot carrier and white

noise.

9. Identification window is defined as total pull-in frequency range (lower plus upper side) of identification PLL (steady

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

10. The maximum total system identification time ON is equal to tident(on) plus tacqui AGC plus tI2C read-out.

11. The maximum total system identification time OFF is equal to tident(off) plus tI2C read-out.

I2C-bus transceiver (pins 1 and 20)

fCI

clock frequency

−

100

kHz

I2C-bus: SCL (pin 20)

VIL

LOW level input voltage

−0.3

−

1.5

VIH

HIGH level input voltage

3.0

−

5.5

tlow

timing LOW period

4.7

−−

µs

thigh

timing HIGH period

4.0

−−

µs

rise time

−−

µs

fall time

−−

0.3

µs

IIL

LOW level input current

−−

−10

µA

IIH

HIGH level input current

−−

µA

I2C-bus: SDA (pin 1)

VIL

LOW level input voltage

−0.3

−

1.5

VIH

HIGH level input voltage

3.0

−

5.5

rise time

−−

µs

fall time

−−

0.3

µs

tsu

data set-up time

0.25

−−

µs

IIL

LOW level input current

−−

−10

µA

IOL

LOW level output current

−3

−−

IIH

HIGH level input current

−−

µA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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