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Summary of Contents for Si4822-DEMO

Page 1: ... for Si4826 only SW4 7 1 7 6 MHz SW5 9 2 10 MHz Demo Board Default for Si4826 only SW6 9 2 9 9 MHz SW7 11 45 12 25 MHz Demo Board Default for Si4826 only SW8 11 6 12 2 MHz SW9 13 4 14 2 MHz Demo Board Default for Si4826 only SW10 13 57 13 87 MHz SW11 15 15 9 MHz Demo Board Default for Si4826 only SW12 15 1 15 8 MHz SW13 17 1 18 MHz Demo Board Default for Si4826 only SW14 17 48 17 9 MHz SW15 21 2 2...

Page 2: ...ns Si4822 26 DEMO Board is designed with the 24 pin SSOP packaged Si4822 26 chip the revolutionary single chip AM FM SW receiver that integrates everything from antenna input to audio output and allows use of common and economical potentiometers to do the frequency tuning It provides a complete portable analog tune digital display AM FM SW radio design The LCD displays the tuning information The S...

Page 3: ... 0 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 10 2021 3 Description Figure 1 and Figure 2 shows the physical layout of the board with key components indicated Figure 1 Si4822 26 DEMO Board Top Side in Time Mode Figure 2 Si4822 26 DEMO Board Bottom Side ...

Page 4: ...antenna Ferrite stick antenna for AM J6 SMA connector for AM conductive testing S11 AM antenna selector J1 BNC connector for FM SW conductive testing or FM whip antenna S12 FM antenna selector Radio Band Selection The demo board provides two methods for selecting the radio band one is to use the slide switch S2 another is to use the POWER BAND button S14 determines which method is in use S14 1 2 S...

Page 5: ...ification test TP3 is the recommended audio signal test point The audio test instrument should be connected to TP3 to get more accurate test results J5 can also be used as an audio test point but the test results may not be entirely accurate under some circumstances Main Components U1 Skyworks Solutions Si4822 26 AM FM SW ATDD receiver U2 Audio amplifier U3 MCU LCD The digital display of tuning fr...

Page 6: ... 6 MHz 7 SW5 9 2 10 0 MHz 8 SW7 11 45 12 25 MHz 9 SW9 13 4 14 2 MHz 10 SW11 15 15 9 MHz 11 SW13 17 1 18 MHz 12 SW15 21 2 22 MHz Human Interface There are seven keys for controlling the demo board as shown below Each key can have a different function under each operating condition Time mode Radio function is disabled LCD displays time Buttons can be used to set time alarm etc FM AM SW Radio mode Tu...

Page 7: ...old Time 1s In setting menu change the current time alarm parameter by one unit per each press In radio setting menu change the current parameter by one unit per each press In radio working mode increase volume 1 step per each press hold Time 1s In setting menu change the current time alarm parameter automatically In radio setting menu change the current parameter automatically In radio working mo...

Page 8: ...s two selections Preference1 When tuning to adjacent channels the volume level decreases by 2 dB Preference2 When tuning to adjacent channels the volume level remains unchanged There is no tuning preference selection for AM mode Table 2 Radio Configuration Parameters FM Parameter AM Parameter SW Parameter Bass Treble 0 8 Default 4 Bass Treble 1 7 Default 3 Bass Treble 1 7 Default 3 Digital volume ...

Page 9: ...ave finished setting the time press BASS TMR button to quit the setting menu The MCU will automatically quit the setting menu if there is no operation within 2 seconds 4 1 2 Alarm Setting 1 In Time mode press the TREBLE AL button to enable or disable the alarm function and to enter the setting menu automatically when the alarm is enabled Once you have entered the setting menu the default is to set...

Page 10: ... 2 1 MCU Setting Band Property for the operation details for setting the band property using the keypad To operate the demo board follow these procedures 1 According to the desired radio band selection method set S14 to use the slide switch or push button 2 According to the desired radio band property set S13 to use tuner default values or reconfigure the band property 3 Hold the POWER BAND push b...

Page 11: ...etting menu and select the item to be set The selected item flashes for 1 second then automatically switches to its current value 2 While the value is flashing press the DOWN VOL or UP VOL button to set the desired value within 3 seconds 3 Repeat step 1 and 2 to finish setting the band properties 4 When the band properties are set the MCU automatically quits setting menu if there is no operation w...

Page 12: ... only for FM mode item 3 in setting menu Tuning preference only for FM and SW item 4 in setting menu To set radio working mode follow these steps 1 Press the SETTING button to enter the item 3 The LCD displays the item number st3 for 1 second then automatically switches to its mode indication 2 Press the DOWN VOL or UP VOL button to select the desired mode within 3 seconds 3 Repeat step 1 and 2 to...

Page 13: ...C44 CAP SM 0603 X7R 0 1 µ 2 2 C5 C36 CAP SM 0603 X7R 0 47 µ 3 2 C8 10 CAP SM 0603 COG 100 p 4 1 C33 CAP SM 0603 COG 10 p 5 4 C28 29 C32 C35 CAP SM 0603 COG 22 p 6 1 C11 CAP SM 0603 X7R 330 p 7 2 C30 31 CAP SM 0603 X7R 33 n 8 1 C34 CAP SM 0603 COG 33 p 9 1 C15 CAP SM 0603 X7R 4 7 µ 10 2 C4 C12 CAP SM 0603 X7R 10 µ 11 1 C13 CAP SM 1210 X7R 47 µ 12 1 C18 CAP SM 0603 X7R 820 p 13 2 C23 C27 CAP SM 1210...

Page 14: ...6 RES SM 0603 Tolerance 1 33 k 1 35 1 R8 RES SM 0603 Tolerance 1 40 k 1 36 1 R44 RES SM 0603 Tolerance 1 47 k 1 37 1 U1 SI4822 26 SSOP24 Si4822 26 38 1 U2 LM4910MA SO8 LM4910MA 39 1 U3 TM8795 44 PIN TM8795 44 PIN 40 1 Q2 TRANSISTOR NPN SOT23 2N3904 41 1 Q1 TRANSISTOR NPN SOT23 2SC9018 42 1 Q3 TRANSISTOR NPN SOT23 2N3906 43 2 D2 D4 DIODE SM ESD SOT23 BAV99 44 3 B4 B5 B6 FERRITE BEAD SM 0603 2 5 k 1...

Page 15: ...CD LCD 55 1 J1 BNC VERTICAL BNC for FM testing 56 1 J6 SMA VERTICAL SMA for AM testing 57 1 ANT1 AW ferrite stick antenna 220 µH 58 1 BAT1 BATTERY BOX AAA 2 SIZE 59 4 S11 14 One pole two throw switch 60 1 S2 Single pole twelve throw switch 61 8 S1 S3 8 S10 Push button 62 1 VR1 100 k 10 Variable resistor POT 100 k 63 1 VR2 10k 20 Variable resistor POT 10 k Table 3 Si4822 26 DEMO Board Bill of Mater...

Page 16: ... C19 0 1u C15 4 7u VR1 100k 10 C6 0 1u D4 BAV99 C5 0 47u Q1 2SC9018 R31 1k R32 10R C30 33n C33 10p R41 120k C31 33n B6 2 5k 100M C36 0 47u ANT1 MW ferrite antenna J6 D2 BAV99 R34 100k C34 33p 1 LNA_EN 2 IRQ 3 TUNE1 4 TUNE2 5 BAND 6 NC 7 NC 8 FMI 9 RFGND 10 NC 11 NC 12 AMI 13 GND 14 GND 15 RST 16 SDIO 17 SCLK 18 XTALO 19 XTALI 20 VDD1 21 VDD2 22 DBYP 23 NC 24 AOUT U1 C1 0 1u R27 100R R33 20k 1 R35 ...

Page 17: ... COM5 15 SEG1 K1 16 SEG2 K2 17 SEG3 K3 18 SEG4 K4 19 SEG5 K5 20 SEG6 K6 21 SEG7 K7 22 SEG8 K8 23 SEG9 K9 24 SEG10 K10 25 SEG11 K11 26 SEG12 K12 27 SEG21 28 SEG22 29 SEG23 30 SEG24 IOA1 31 SEG25 IOA2 32 SEG26 IOA3 33 SEG27 IOA4 34 SEG28 IOB1 ELC 35 SEG29 IOB2 ELP 36 SEG30 IOB3 BZB 37 SEG31 IOB4 BZ 38 SEG32 IOC1 KI1 39 SEG33 IOC2 KI2 40 SEG34 IOC3 KI3 41 SEG35 IOC4 KI4 42 RESET 43 INT 44 TEST U3 Y2 ...

Page 18: ...e 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com Rev 0 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 10 2021 Figure 7 Si4822 26 DEMO Board Gerber Rev 1 0 ...

Page 19: ...CLUDING WITHOUT LIMITATION LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE Skyworks products are not intended for use in medical lifesaving or life sustaining applications or other equipment in which the failure of the Skyworks products could lead to personal inju...

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