cxa2149q Sony Electronics, cxa2149q Datasheet - Page 23

• Manufacturer Part Number: cxa2149q
• Description: I2c-bus-compatible Audio/video Switch
• Manufacturer: Sony Electronics

Applications Notes (see circuits diagram on next page).
1. Care should be taken with polarity sensitive capacitors. The respective bias voltages for audio and video
2. Connect ADR to V
3. Setting the MUTE pin to 2.5 V or more can mute the audio outputs.
4. TRAP1, TRAP2 and TRAP3 are set for a 3.58 MHz subcarrier. For a 4.43 MHz subcarrier typical values for
5. LO0 and LO1 connected to ground when not required.
6. Connect all NC to ground in application.
inputs and outputs are as follows.
the two traps would be 47 µ and 27 p, respectively. Values may require adjustment dependent upon the
application. Each trap gives 6 dB’s of attenuation at the desired frequency.
C1, C2, C3, COUT1 and COUT2 are biased at approximately 4.5 V.
TV, CVIN1, CVIN2, Y1, Y2 and Y3 are SYNC tip clamped at approximately 3.9 V.
CVOUT1, CVOUT2, TVOUT have their SYNC tip output at approximately 3.5 V.
YOUT1, YOUT2 have their SYNC tip output at approximately 3.3 V.
ABIAS and VBIAS are equal to approximately 4.5 V.
CC
when wishing to set the slave address to 92H.
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CXA2149Q