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MC44BS373CADR2 Datasheet(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC44BS373CADR2 Datasheet(HTML) 3 Page - Freescale Semiconductor, Inc |
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3 / 52 page  MC44BS373CA Data Sheet Pin Descriptions •I2C bus 3.3-V compatible • Lower power consumption in normal and standby modes (–2 mA) • Can be powered down without holding down I2C lines • TB1 bit no longer available (limited compatibility with MC44355 devices no longer available) • New SREF bit to program sound reference frequency (31.25 and 62.5 kHz) • Four different I2C addresses selectable by single pin with external resistor (available only in QFN20 package) • Direct sound RF modulator (FM and AM sound modulators bypassed) for NICAM or stereo sound applications (available only in QFN20 package) • Switch between two integrated VCOs controlled directly by frequency divider (at 700 MHz) • Lower RF second harmonic spurious but higher third harmonic spurious. In applications it is easier to filter UHF third harmonics spurious than second harmonics, as these frequencies are always out of the UHF band. Unfortunately, the second harmonic can fall back into the same UHF band (for instance channel 21 second harmonic). For this reason, it is almost impossible to have a good rejection of low UHF second harmonic with an external low-pass filter. This is why the design has been optimized for maximum second harmonic rejection in spite of an increase in the third harmonic level. 3 Pin Descriptions This section describes the pins of the MC44BS373CA. First the 16-pin package will be considered, then the 20-pin package. 3.1 SO16 Package Pin Descriptions The pins of the 16-pin package are listed in Table 1, along with a description of each. Table 1. SO16 Package Pin Descriptions Pin Name Description Pin Name Description 1SCL I2C clock 9 VIDEO Video input 2SDA I2C data 10 VCCA Main analog supply voltage 3 LOP Logical output port controlled by I2C bus 11 GND Analog ground 4 XTAL Crystal 12 TVOUT TV output signal 5 GND Ground 13 TVOVCC TV output stage supply voltage 6 PREEM Pre-emphasis capacitor 14 PLLFLT RF PLL loop filter 7 AUDIO Audio input 15 VCCD Digital supply voltage 8 SPLLFLT Sound PLL loop filter 16 GNDD Digital ground |
Similar Part No. - MC44BS373CADR2 |
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Similar Description - MC44BS373CADR2 |
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