17
32. External audio input left channel
: 350mVrms
33. SCART 1 input right channel
: 350mVrms
34. SCART 1 input left channel
: 350mVrms
35. Ground guards
36. SCART 2 input right channel
: 350mVrms
37. SCART 2 input left channel
: 350mVrms
38. Analogue supply voltage 2
: 5V, Min : 4.75V, Max : 5.5V
39. Positive reference voltage
40. Reference voltage ground
: 0V
41. Filter capacitor pin 1
42. Filter capacitor pin 2
43. Analogue supply ground 2
: 0V
44. Filter capacitor pin 2
45. Filter capacitor pin 1
46. Reference voltage 2
: Vdda2/Vssa2 : 50%
47. Scart 1 output right channel
: 500mVrms
48. Scart 1 output left channel
: 500mVrms
49. Digital supply ground 2
: 0V
50. Analogue supply ground 4
: 0V
51. Scart 2 output right channel
: 500mVrms
52. Scart 2 output left channel
: 500mVrms
53. Reference voltage 3
: Vdda3/Vssa3:50%
54. Post-filter capacitor pin right channel
55. Post-filter capacitor pin left channel
56. Analogue supply ground 3
: 0V
57. Headphone output right channel
: Vo(clip) : Min : 1400mVrms
58. Headphone output left channel
: Vo(clip) : Min : 1400mVrms
59. Analogue supply voltage 3
: 5.0V, Min : 4.75V, Max : 5.5V
60. Loudspeaker (main) output right channel
: Vo(clip) : Min : 1400mVrms
61. Loudspeaker (main) output left channel
: Vo(clip) : Min : 1400mVrms
62. Line output left channel
: 500mVrms
63. Line output right channel
: 500mVrms
64. Digital supply voltage 2
: 5.0V, Min : 4.75V, Max : 5.5V
TDA9818:
General description
:
The TDA9818 is an integrated circuit for multistandard vision IF signal processing, sound AM and FM demodulation.
Features:
n
5 V supply voltage
n
Applicable for IF frequencies of 38.9 MHz, 45.75 MHz and 58.75 MHz
n
Gain controlled wide band VIF-amplifier (AC-coupled)
n
True synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures, reduced
harmonics, excellent pulse response)
n
Robustness for overmodulation better than 105% due to gated phase detector at L/L accent standard and PLL-bandwidth control
at negative modulated standards
n
VCO frequency switchable between L and L accent (alignment external) picture carrier frequency
n
VIF AGC detector for gain control, operating as peak sync detector for B/G, peak white detector for L; signal controlled reaction
time for L
n
Tuner AGC with adjustable takeover point (TOP)
n
AFC detector without extra reference circuit
n
AC-coupled limiter amplifier for sound intercarrier signal
n
Alignment-free FM-PLL demodulator with high linearity
n
SIF input for single reference QSS mode (PLL controlled); SIF AGC detector for gain controlled SIF amplifier; single reference
QSS mixer able to operate in high performance single reference QSS mode and in intercarrier mode
n
AM demodulator without extra reference circuit
n
Stabilizer circuit for ripple rejection and to achieve constant output signals
n
ESD protection for all pins
PINNING
PIN VALUE
1. VIF differential input signal voltage 1
: Input signal voltage sensitivity
60mVrms, Max:100mVrms
2. VIF differential input signal voltage 2
: Input signal voltage sensitivity
60mVrms, Max:100mVrms
3. Standard switch
: Min : 2.8V, Max : Vp
4. VIF AGC capacitor
:
Charging current
: 1mA, Min : 0.75mA, Max : 1.25mA
Discharging current
: B/G standard : 20mA, Min : 15mA, Max:25mA
Normal mode L : 300nA, Min : 225nA, Max : 375nA
Fast mode L : 40mA, Min : 30mA, Max : 50mA
5. SIF AGC capacitor
:
Charging current
: FM mode : 12mA, Min : 8mA, Max : 16mA
AM mode : 1.2mA, Min : 0.8mA, Max : 1.6mA
Discharging current
: FM mode : 12mA, Min : 8mA, Max : 16mA
Normal mode AM : 1.4mA, Min : 1mA, Max : 1.8mA
Fast mode AM : 85mA, Min : 60mA, Max : 110mA
6. PLL loop filter
: Min : 0V, Max : Vp
7. L/L accent switch and adjust
: Min : 0V, Max : Vp
8. Audio output
: Rx : 470ohm : 250mVrms, Min : 200mVrms, Max : 300mVrms
Rx : 0ohm : 500mVrms, Min : 400mVrms, Max : 600mVrms
9. De-emphasis input
: Min : 0V, Max : Vp
10. De-emphasis output
: Min : 0V, Max : Vp
11. Decoupling capacitor
: Min : 0V, Max : Vp
12. Single reference QSS/intercarrier output voltage : 140mVrms, Min : 100mVrms Max : 180mVrms
