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MC44BS373CA Dataheets PDF



Part Number MC44BS373CA
Manufacturers Motorola
Logo Motorola
Description PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator
Datasheet MC44BS373CA DatasheetMC44BS373CA Datasheet (PDF)

www.DataSheet4U.com Technical Data MC44BS373CA Rev. 2.6, 6/2004 MC44BS373CA Data Sheet PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator MC44BS373CA SO16NB Package QFN20 Package Ordering Information Device MC44BS373CAD,R2 MC44BS373CAFC,R2 MC44BS373CAEF,R2 Temp Range –20 to +85°C –20 to +85°C –20 to +85°C Package SO16NB QFN20 Lead Free SO16NB Lead Free NOTE: For tape and reel, add R2 suffix. Contents 1 Features . . . . . . . . . . . . . . . . . . . . . . 2 2 Comparing the MC44BS.

  MC44BS373CA   MC44BS373CA



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www.DataSheet4U.com Technical Data MC44BS373CA Rev. 2.6, 6/2004 MC44BS373CA Data Sheet PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator MC44BS373CA SO16NB Package QFN20 Package Ordering Information Device MC44BS373CAD,R2 MC44BS373CAFC,R2 MC44BS373CAEF,R2 Temp Range –20 to +85°C –20 to +85°C –20 to +85°C Package SO16NB QFN20 Lead Free SO16NB Lead Free NOTE: For tape and reel, add R2 suffix. Contents 1 Features . . . . . . . . . . . . . . . . . . . . . . 2 2 Comparing the MC44BS373CA to the MC44BC373/4C. . . . . . . . . . . . . . . . . 2 3 Pin Descriptions. . . . . . . . . . . . . . . . . 3 4 MC44BS373CA Functional Overview 5 5 Maximum Ratings . . . . . . . . . . . . . . . 6 6 Thermal Ratings . . . . . . . . . . . . . . . . 6 7 Electrostatic Discharge . . . . . . . . . . . 7 8 Electrical Characteristics . . . . . . . . . . 7 9 I2C Bit Mapping . . . . . . . . . . . . . . . . . 8 10 I2C Programming . . . . . . . . . . . . . . 10 11 Modulator High-Frequency Characteristics . . . . . . . . . . . . . . . . . 13 12 Video Characteristics. . . . . . . . . . . . 14 13 Audio Characteristics. . . . . . . . . . . . 16 14 Characterization Measurement Conditions . . . . . . . . . . . . . . . . . . . . 17 15 MC44BS373CA Modes of Operation 22 16 High Speed I2C Compatible Bus. . . 27 17 Pin Circuit Schematics. . . . . . . . . . . 31 18 Application Diagrams. . . . . . . . . . . . 32 19 MC44BS373CA Evaluation Board Schematic and Layout . . . . . . . . . . . 36 20 Packaging Instructions . . . . . . . . . . 41 21 Marking Instructions . . . . . . . . . . . . 42 22 Case Outlines . . . . . . . . . . . . . . . . . 43 23 Document Revision History . . . . . . . 48 The MC44BS373CA audio and video modulator is for use in VCRs, set-top boxes, and similar devices. • • • Supports multiple standards TV output level 82 dBµV typical 5- and 3.3-V compatible I2C bus Figure 1 shows the pin connections for both package options. PLLFLT GNDD 18 SCL SDA 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GNDD VCCD PLLFLT TVOVCC TVOUT GND VCCA VIDEO LOP CAS XTAL GND PREEM 1 2 3 4 5 20 19 VCCD SDA SCL 17 16 15 14 13 12 11 TVOVCC TVOUT NC GND NC LOP XTAL GND PREEM AUDIO SPLLFLT 6 7 8 9 10 AUDIO SPLLFLT AUXIN VIDEO SO16NB Package QFN20 Package Figure 1. MC44BS373CA Pin Connections VCCA Features 1 Features The MC44BS373CA is a multi-standard, PAL/SECAM/NTSC modulator. The channel is set by an on-chip high-speed I2C-compatible bus receiver. A phase-locked loop (PLL) tunes the modulator over the full UHF range. The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5-, 5.5-, 6.0-, and 6.5-MHz subcarrier frequencies. These frequencies are selectable by bus. The modulation standard can be chosen using a control bit that selects between positive and negative modulation. The picture-to-sound ratio may be adjusted using the bus. In addition, an on-chip video test pattern generator can be switched on with a 1-kHz audio test signal. The MC44BS373CA also has the following features: • • • • • • • • • • • • • • • • • • • • Integrated on-chip programmable UHF oscillator No external varicaps diodes/inductor or tuned components Extremely low external component count Channel 21–69 UHF operation VHF range possible by internal dividers (30–450 MHz) Boosted TVOUT level (82 dBµV typical) High-speed read and write I2C bus compatible (800 kHz) I2C address selectable by pin (four choices) using external resistor (available only in QFN20 package) I2C bus 5- and 3.3-V compatible Fixed video modulation depth (93% typical in system L and 82% typical in the other standards) Peak white clip disabled by bus Programmable picture/sound carrier ratio (12 and 16 dB) Integrated on-chip programmable sound subcarrier oscillator (4.5, 5.5, 6.0 and 6.5 MHz)—no external varicaps Programmable sound reference frequency (31.25 and 62.5 kHz) Direct RF sound modulator input (FM and AM modulator bypassed) for NICAM or stereo sound applications (available only in QFN20 package) On-chip video test pattern generator with sound test signal (1 kHz) Low-power programmable modulator standby mode Transient output inhibit during PLL lock-up at power-on Logical output port controlled by bus ESD protection, minimum 4 KV 2 Comparing the MC44BS373CA to the MC44BC373/4C Compared to the MC44BC373/4C devices, the MC44BS373CA has the following improvements: • • Higher output level (82 versus 74.5 dBµV) Higher video signal to noise (+3 dB) 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 soun.


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