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PDF TDA8822 Data sheet ( Hoja de datos )
| Número de pieza | TDA8822 | |
| Descripción | Universal I2C-bus programmable RF modulator | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TDA8822
Universal I2C-bus programmable
RF modulator
Preliminary specification
File under Integrated Circuits, IC02
1997 Jan 08
1 page  
Philips Semiconductors
Universal I2C-bus programmable RF
modulator
Preliminary specification
TDA8822
PINNING
SYMBOL
VCCA
ACP
PREEMPH
RFOSCA
RFOSCB
OGND
RFOSCC
RFOSCD
VVT
VCP
VCCD
XTAL
DGND
SCL
SDA
P0
TPSG
RFB
RFA
RFGND
NICAM
AUDIO
AGND
VIDEO
PIN DESCRIPTION
1 analog power supply
2 audio charge pump output
3 audio pre-emphasis network
4 RF oscillator A (collector) output
5 RF oscillator B (base) input
6 RF oscillator ground
7 RF oscillator C (base) input
8 RF oscillator D (collector) output
9 video tuning voltage output
10 video charge pump output
11 digital power supply
12 crystal oscillator input
13 digital ground
14 serial clock (I2C-bus) input
15 serial data (I2C-bus) input/output
16 general purpose output
17 test pattern signal generator
input/output pin
18 RF output B
19 RF output A
20 ground for the RF outputs
21 NICAM input
22 audio input
23 analog ground
24 video input
handbook, halfpage
VCCA 1
ACP 2
24 VIDEO
23 AGND
PREEMPH 3
22 AUDIO
RFOSCA 4
21 NICAM
RFOSCB 5
20 RFGND
OGND 6
RFOSCC 7
19 RFA
TDA8822
18 RFB
RFOSCD 8
17 TPSG
VVT 9
16 P0
VCP 10
15 SDA
VCCD 11
XTAL 12
14 SCL
13 DGND
MGE673
Fig.2 Pin configuration.
1997 Jan 08
5
5 Page 
Philips Semiconductors
Universal I2C-bus programmable RF
modulator
Preliminary specification
TDA8822
Table 9 Overview of the test modes
T0 RF0 TPSG P0 PIN(1) TPSG
TEST MODES
1000
1001
1010
1011
1100
1101
1110
1111
X fref(audio) on P0; both CP sinking current; notes 2 and 6
X fdiv(audio) on P0; note 3
X fref(video) on P0; both CP sourcing current; notes 4 and 6
X fdiv(video) on P0; note 5
X video charge pump off; note 7
X audio charge pump off and balance test; notes 8 and 11
X video high impedance test; note 9
X baseband signal on RF outputs; note 10
Notes
1. During the test mode (bit T0 set to logic 1), the pin TPSG is unused, meaning that the input information does not have
any effect, and that the output port does not sink any current.
2. In ‘fref(audio) on P0’ mode, the reference frequency of the audio PLL is available on the port P0.
3. In ‘fdiv(audio) on P0’ mode, f--d---i--v---(--a2---u---d--i--o---) is available on the port P0 (fdiv(audio) is the frequency from the sound oscillator
divided by the dividing ratio of the audio programmable divider).
4. In ‘fref(video) on P0’ mode, the reference frequency of the video PLL is available on the port P0.
5. In ‘fdiv(video) on P0’ mode, f--d---i--v---(--2v---i-d---e---o--)- is available on the port P0 (fdiv(video) is the frequency of the RF oscillator divided
by the dividing ratio of the video programmable divider).
6. In ‘both CP sinking or sourcing current’ modes, the charge pump of the audio PLL and the one of the video PLL are
sinking or sourcing their nominal current.
7. The ‘video charge pump off’ mode allows to measure the leakage current on the video PLL charge pump.
8. The ‘audio charge pump off’ mode allows to measure the leakage current on the audio PLL charge pump.
9. In the ‘video high-impedance’ mode, it is possible to inject an external tuning voltage for the RF carrier setting.
In this mode, the video PLL is off.
10. In the ‘baseband signal on RF outputs’ mode, the RF oscillator is off, and it is possible to measure the baseband
video and audio subcarrier signals on the RF output pins.
11. During the ‘balance test’ mode the picture carrier is over-modulated allowing the measurement of the residual carrier.
1997 Jan 08
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet TDA8822.PDF ] | |
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