mc44c401l Freescale Semiconductor, Inc, mc44c401l Datasheet
mc44c401l
Available stocks
Related parts for mc44c401l
mc44c401l Summary of contents
Page 1
... The MC44C401L is engineered to process right and left analog audio signals and baseband composite video to generate a stereophonic composite signal in accordance with BTSC system standards. The MC44C401L is designed to output this signal to a Motorola RF modulator, which in turn produces a stereo encoded RF channel for use with any BTSC stereo television receiver. ...
Page 2
... Reference Documentation • Extended low frequency response (The MC44C401L frequency response extends below 25 Hz) • Simple passive interface to Motorola’s MC44BC374 (UHF/VHF) and MC44BC375 (VHF) modulators • Preservation of original surround sound fidelity • System performance not impacted by copy protection technologies • ...
Page 3
... REG IN 1µF 3.3V 1K 47Ω 510Ω 1µF LEFT IN RIGHT IN 1µF 1µF 0.1µF 0.1µF 1K CVBS IN 0.1µF 470pF 1M Figure 2. MC44C401L Recommended Usage Freescale Semiconductor PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE 0.1µF 0.1µF 22µH 1µF 47Ω 1µF 1µF 9 VID_PRES VINLP 2 VINRP CVBS 3 VAGO 10 ...
Page 4
... XTALIN XTALOUT 1 CLK4MHZ Power Supply APLLVDD APLLVSS SSVDD SSVSS ADCVDD ADCVSS 4 PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE Table 1. MC44C401L Signal Descriptions Pin # Description 9 Left channel input voltage 4 ADC ref. input voltage 3,6,10 Analog virtual ground 5 ADC ref. input voltage 2 Right channel input voltage ...
Page 5
... Table 1. MC44C401L Signal Descriptions (continued) Signal DACVDD DACVSS DVDD DVSS OVDD 1 Use a 4MHz LPF or BPF on this clock signal to the modulator 5 Electrical Specifications 5.1 DC Characteristics Table 2. MC44C401L DC Characteristics (Preliminary) PIN Symbol DVDD - 1.8 V Digital Logic DVDD - 1.8 V Digital Logic OVDD - 3.3 V Digital Output OVDD - 3.3 V Digital Output ...
Page 6
... CA V Composite Audio Output measured (see test circuit Figure 2) ol load 5.2 AC Characteristics Table 3. MC44C401L AC Characteristics (Preliminary) (See Figure 2) SIGNALS Symbol LEFT/RIGHT IN Input Level LEFT/RIGHT IN Input Impedance COMPOSITE Composite Output Level COMPOSITE SNR COMPOSITE THD<superscript>2 COMPOSITE ...
Page 7
... Package Data 6.1 MC44C401L Package The MC44C401L pin-outs (32TQFP package) are shown in Figure 3. CVBS VINR VAGO VREFP VREFM VAGO ADCVDD ADCVSS Freescale Semiconductor PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE 32 1 Orientation Mark Freescale MC44C401L 8 9 Figure 3. MC44C401L 32LQFP Package MTS Stereo Encoder, Rev. 0.5 ...
Page 8
Package Data 6.2 Mechanical Data 0.20 H A– D1/2 PIN 1 32 INDEX E1 D 0.20 C A– 28X H SEATING PLANE C 8X .(O1º) ...
Page 9
... Functional Description The following sections provide brief descriptions of the MC44C401L modules. 7.1 Phase Locked Loop (APLL) The APLL, shown in Figure 5, locks to the reference frequency of 12 MHz and generates the master clock. Ref Clk XTALIN 22pF 7.2 Sync Separator The Sync Separator, shown in Figure 6, extracts the composite sync from the incoming composite video signal. ...
Page 10
... Pre-emphasis Spectrum Analyzer Precision Receiver (TEK TV1350) Precision MTS Decoder (Modulation Wide Band Sciences SRD1) Output Figure 7. MC44C401L Level Setup MTS Stereo Encoder, Rev. 0.5 Composite Video CVBS In 4.5MHz Notch Filter Composite Video 0db / 25kHz deviation = 1.4Vp-p @ 1kHz Mono (both channels driven) ...
Page 11
THIS PAGE INTENTIONALLY LEFT BLANK Freescale Semiconductor PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE MTS Stereo Encoder, Rev. 0.5 Functional Description 11 ...
Page 12
... Learn More: For more information about Freescale Semiconductor products, please visit http://www.freescale.com MC44C401L Rev. 0.5 07/2004 PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document ...