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SL5162KG 数据表(PDF) 6 Page - Zarlink Semiconductor Inc |
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SL5162KG 数据表(HTML) 6 Page - Zarlink Semiconductor Inc |
6 / 10 page 5 SL5162 open collector outputs is initially turned on. This is then released when the mode selection (PAL/NTSC or SECAM) is made or at any other convenient point (e.g. when frequency data is sent) in PAL/NTSC mode. As an example, to synthesise 471·25MHz send the data words as shown in Table 4. Care must be taken to ensure that the MSS pin is adequately decoupled as close to the pin as possible. The routing of any control line to this pin should also be layed out to ensure maximum separation from the LO components whilst still remaining as short as possible. In PAL/NTSC (mono) applications, pin 13 (SUB 2) may be left open circuit or decoupled to ground via a 1nF capacitor. In SECAM (mono) applications pin 13 must be directly connected to VCC to disable the intercarrier sound circuitry. For optimum performance it is recommended that in single ended output applications, pin15 is used for positive modulation, and pin 16 used for negative modulation. Test Signal Generator (TSG) A TSG is provided which may be enabled by connecting a 500kHz ceramic resonator via a 56pF capacitor to the TSG pin (pin 18) as shown in Figure 4. The TSG is disabled by connecting pin 18 to ground. The waveform that the TSG produces (shown in Figure 3) will create two white bars on a standard TV screen. It should be noted that standard (video) modulation depth specification for the SL5162 in its normal application does not apply to the TSG facility, since it is only intended as a tuning or test mode. AGC/White Clip The SL5162 is provided with an AGC circuit which should ensure correct modulation depth provided a composite video signal between 0·5V and 1·5V sync tip to peak white is applied to the VIDEO input, pin 19. If desired, the AGC may be disabled and a white clip circuit switched in to prevent overmodulation. This clipping level is set to a nominal 17% above peak white level, thus ensuring that even with a standard PAL I 95% saturated, 100% amplitude colour bars test signal, no clipping should take place. The AGC is enabled by connecting the pin 20 to Ground via a 150nF capacitor; white clip is enabled by connecting a 1·6k Ωresistor from pin 20 to ground. C2 1D 74 CE B0 CE 10 STOP Address synthesiser MSB frequency information LSB frequency information Charge pump high mode, standard operation Turn on port 5 to switch sound tank on Resend of byte 4 Turn on port 5, turn off port 4 (to configure SL5162 to PAL/NTSC operation) Stop bit (if required) Data word Description Table 4 MSS pin voltage 0V 5V FM AM Negative Positive Video modulation Audio modulation Table 3 R1 R2 R4 R5 R7 R8 R9 R10* R11* R12 R13 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 22k Ω 22k Ω 10k Ω 22k Ω 47k Ω 1·6k Ω 75 Ω 75 Ω 0 Ω 0 Ω 10k Ω 18pF 100pF 100pF 220nF 47nF 10nF - 5·6pF 100pF 10nF Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 0805 Surface mount 1206 Surface mount 1206 Surface mount 0805 100V COG Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 BB515 varactor diode Surface mount 0805 Surface mount 0805 Surface mount 1206 Circuit ref. Value Type C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 10nF 10nF 150pF 33nF 47 µF 150nF 680nF 56pF 10nF 10nF 100pF 1 µF 10nF 220nF 100pF 100pF 1·5pF 1·5pF 1·5pF 1·5pF Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Electrolytic 0·1 inch pitch Surface mount 1206 (X7R) 0·2 inch pitch leaded capacitor Surface mount 1206 Surface mount 0805 Surface mount 0805 Surface mount 1206 Electrolytic 0·1 inch pitch Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 1206 Surface mount 0603 Surface mount 0603 Surface mount 0603 Surface mount 0603 Circuit ref. Value Type *Not fitted Table 5 SL5162 demonstration board components parts list contd… |
类似零件编号 - SL5162KG |
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类似说明 - SL5162KG |
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