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4994BS–AUDR–05/08
ATR4262M1 [Preliminary]
• Alternative frequency check
An optional state machine can control the alternative frequency check sequence for some
common basebands. This feature reduces the CPU load of the main controller because the
statemachine outputs the signals with the correct timing for quality check and muting of the
baseband.
• Switching outputs
Up to seven general-purposes open-drain switches are available to simplify the customer
application.
• Two-wire control interface
The ATR4262 can be programmed via a fast-mode TWI bus interface. Two different IC
addresses can be selected to allow two tuners at the same bus segment. Various program-
ming bits allow unique flexibility of operation modes. A tuner status byte provides
information about the receiving conditions and the PLL status.
• Package and power supply
The ATR4262 comes in a small outline QFN48 package to allow small and cost-effective
tuner applications. A single 8V to 10V supply voltage is sufficient to operate the ATR4262
and to reduce the complexity of the customer application.