SAA1300 데이터 시트보기 (PDF) - Philips Electronics

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SAA1300

Tuner switching circuit

Philips Electronics 

Philips Semiconductors

Tuner switching circuit

The SAA1300 is for switching on and off the supply lines

of various circuit parts via an I2C bus signal. Furthermore,

it can be used to supply current for switching diodes in

radio and television tuners. It contains 5 output stages,

which are capable of supplying up to 85 mA in the ON state

or sinking up to −100 µA in the OFF state.

Current limiting and short-circuit protection are included.

The output stages are driven by a shift register/latch

combination which is loaded via data from the I2C bus. A

power-on reset of the latches ensures the OFF state of the

output stages (OUT 2 to OUT 5) without data reception

from the I2C bus. A subaddressing system allows the

connection of up to three circuits on the same I2C bus

lines; one of the outputs (OUT 1, pin 7) can also be used

as an input to select the device via a simple internal A/D

converter.

Product specification

SAA1300

Fig.1 Block diagram.

PACKAGE OUTLINE

9-lead SIL; plastic (SOT142); SOT142-1; 1996 September 05.

June 1987

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