CXA1929M
TV RF MODULATOR/PLL For the availability of this product, please contact the sales office.
Description Fully sy...
CXA1929M
TV RF MODULATOR/PLL For the availability of this product, please contact the sales office.
Description Fully synthesized I2C controlled UHF/VHF TV RF Modulator compatible with PAL and NTSC video formats. Features Minimal adjustment of external components For use on VHF and UHF TV Frequencies Video RF carrier frequency programmable in 125 kHz steps ATT Driver I2C control of: a. Video RF Carrier Frequency b. Sound Carrier Frequency c. Modulation Depth (±2.5 % Typ.) d. FM Deviation (±7 % Typ.) e. P/S ratio (±1 dB Typ.) f. Nicam output enable to sleep g. Video RF carrier enable to sleep On chip
Regulator 3.1 V 24 pin SOP (Plastic)
Applications PAL and NTSC System VCR Satellite Receiver Set Top Box Structure Bipolar silicon monolithic IC Recommended Operating Voltages (Ta=25 °C) Supply voltage VCC 5.0±0.5 V Supply for VCO Varactor –30 to +0.5 °C Operating Temperature –10 to +80 °C
Block Diagram
Analog GND Analog VCC RF-OUT MOD-adj OSC VCC OSC GND
OSC2
OSC3
OSC1
PDout
14 PLL
OSC4
24 AMP
23
22
21
20
19
18
17
16
15
13
VIDEO MIXER
AMP
VCO
TPSG W/C-CLAMP FM-OSC REG PLL PLL I2C-Interface ATT Driver
OSC
1
Video-in
2
Vreg
3
NTSC Audio-in
4
PAL Audio-in
5
FM-Tank
6
Audio-Loop filter
7
Digital GND
8
Xtal
9
Digital-VCC
10
11
12
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