TDA9819 datasheet(18/40 Pages) PHILIPS

18 / 40 page

1998 Jul 14

Philips Semiconductors

Product speciﬁcation

Multistandard vision and sound-IF PLL with

DVB-IF processing

TDA9819

Notes to the characteristics

1. Values of video and sound parameters are decreased at VP = 4.5 V.

2. This parameter is not tested during production and is only given as application information for designing the television

receiver.

3. Source impedance: 2.3 k

Ω in parallel to 12 pF (SAW filter); fIF = 45 MHz.

4. Loop filter 330

Ω/220 nF; loop bandwidth for M standard: BL ≈ 70 kHz (natural frequency fn ≈ 12 kHz; damping factor

≈ 2.9; loop bandwidth for B/G and L standard: BL ≈ 80 kHz (natural frequency fn ≈ 13 kHz; damping factor d ≈ 3.2;

calculated with sync level within gain control range). Resonance circuit of VCO: Q0 > 50; Cext and Cint see Fig.12.

5. Temperature coefficient of external LC-circuit is equal to zero.

6. ViIF = 10 mV RMS; ∆f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture video

modulation.

7. ViIF signal for nominal video signal.

8. Offset current measured between pin 7 and half of supply voltage (VP = 2.5 V) under the following conditions:

no input signal at VIF input (pins 1, 2, 4 and 5) and VIF amplifier gain at minimum (V28 =VP). Due to sample-and-hold

mode of the FPLL in L standard, the leakage current of the loop filter capacitor (C = 220 nF) should not exceed

500 nA.

9. Measurements taken with SAW filter M3951M and M9352M (Siemens, M standard);

frequency range = 10 kHz to 5 MHz. Sound carrier ON; PC/SC ratio 7 dB (transmitter); modulation VSB.

10. The 7 dB buffer gain accounts for 1 dB loss in the sound trap. Buffer output signal is typical 2 V (p-p), in event of

CVBS video amplifier output typical 1 V (p-p). If no sound trap is applied a 330

Ω resistor must be connected from

output to input (from pin 21 to pin 22).

11. The leakage current of the AGC capacitor should not exceed 1

µA at M and B/G standard respectively 10 nA current

at L standard. Larger currents will increase the tilt.

12. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 10). B = 5 MHz weighted

in accordance with

“CCIR 567”.

AFC circuit (DVB mode)

SUS

control steepness

∆I23/∆ff0 = 48.75 MHz; see Fig.12

and note 17

0.7

0.98

1.3

µA/kHz

SEU

f0 = 43.0 MHz; see Fig.12

and note 17

0.45

0.70

0.95

µA/kHz

DVB output signal (IF input to DVB output)

V18(p-p)

output voltage

(peak-to-peak value)

CL < 15 pF; RL > 5kΩ; with

internal AGC

1.8

2.1

2.4

V18DC

DC voltage

−

2.5

−

−1 dB bandwidth

CL < 15 pF; RL > 5kΩ

−

MHz

−3 dB bandwidth

−

MHz

αC(DVB)

fundamental input signal and

IF harmonics

−

suppression of in-band

harmonics

2.0 V (p-p) output voltage

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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