Si4844-DEMO Silicon Labs, Si4844-DEMO Datasheet
Si4844-DEMO
Specifications of Si4844-DEMO
Related parts for Si4844-DEMO
Si4844-DEMO Summary of contents
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... SW9 13.4–14.2 MHz (Demo Board Default, for Si4844 only) SW10 13.57–13.87 MHz SW11 15–15.9 MHz (Demo Board Default, for Si4844 only) SW12 15.1–15.8 MHz SW13 17.1–18 MHz (Demo Board Default, for Si4844 only) ...
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... Si4840/44-DEMO 2. Overview This manual describes the operation of the Silicon Labs Si4840/44-DEMO board, Rev 1.3, June 30, 2011. The Silicon Laboratories Si4840/44 DEMO board is designed with the 24-pin SSOP-packaged Si4840/44 chip, the revolutionary single chip AM/FM/SW receiver that integrates everything from antenna output to audio input and allows use of common and economical potentiometers to do the frequency tuning ...
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Figure 2. Si4840/44-DEMO Board Bottom Side Power: BAT1: 2 cells AAA battery compartment Audio connectors: J5: Stereo audio headphone output Antenna selections: AM antenna: Ferrite stick antenna for AM J6: SMA connector for AM conductive test S11: AM antenna selection ...
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Si4840/44-DEMO S12: FM antenna selection 1-2 BNC (J1) 2-3 HP ANT (J5) Radio Band selection: The Demo board provides 2 methods to select the radio band. One is to use the slide switch (S2); the other is ...
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Audio output test point: For general specification 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 ...
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Si4840/44-DEMO Human Interface: There are 8 keys for controlling the demo board as shown below. TREBLE/AL SETTING Each key can have a different function under each operating condition: Time mode: Radio function is disabled. LCD displays time. Buttons can ...
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Table 1. Key Function Description (Continued) Button In setting menu, change Hold Time > 1s the current time/alarm parameter automatically. MONO/ST Hold Time < 1s SETTING Hold Time > 1s Si4840/44-DEMO Time Mode FM/AM/SW Radio Mode Tuner Off In radio ...
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Si4840/44-DEMO Table 2. Radio Configuration Parameters FM parameter Bass/Treble: 0-8 Default: 4 Digital Volume: 0-63 Default: 63 Band Top: Max 109 MHz Default: 108 MHz Band Bottom: Min 64 MHz Default: 87.5 MHz Band Range: Max 22 MHz De-emphasis: 50 ...
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Notes: Tone/VOL mode has 4 selections: Bass/treble mode: no digital volume control, fixed volume level at 59. Digital volume mode: no bass/treble effect, volume levels from 0 to 63. Mixed mode 1: bass/treble and digital volume coexist, ...
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Si4840/44-DEMO 4. Operation The Si4840/44-Demo Board, a complete analog tune and digital display radio, provides two major modes of operation: Time Mode and FM/AM/SW Radio Mode. 4.1. Time Mode Put 2 AAA batteries into the battery compartment. The board will ...
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Figure 3. LCD Display in FM Radio Mode The demo board provides two methods to select the radio band. One is to use the slide switch (S2). The other is to use the POWER/BAND push button. S14 determines which method ...
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Si4840/44-DEMO 4.2.1. MCU Setting Band Property The demo board provides the function that the band property can be set by MCU. The band property includes: Band top Band bottom Blend mono (only for FM) Blend stereo ...
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MCU Setting Radio Working Mode The host MCU can set the radio working mode. The working mode includes: Tone/volume mode (only for FM mode), item 6 in the setting menu Tuning preference (only for the FM and ...
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Si4840/44-DEMO 5. Bill of Materials ATDD AM/FM/SW receiver IC Si484x with external 32.768 kHz crystal oscillator support LM4910MA Audio Amplifier IC TM8795 MCU See Table 3 for details. Table 3. Si4840/44-DEMO Board Bill of Materials Rev. 1.3 ...
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... FERRITE BEAD,SM,0603 BUZZER CRYSTAL LED 1N4148 Stereo earphone jack with switch RES,SM,0603 IND,SM,0603 Rev 0.1 Value 22R 2k 2.2k 4.7M 6.8k NP 10k 1% 160k 1% 20k 1% 30k 1% 33k 1% 40k 1% 47k 1% Si4844-A LM4910MA TM8795 44 PIN 2N3904 2SC9018 2N3906 BAV99 2.5k/100M NP BUZZER 32.768KHz LED 1N4148 3.5mm 0R 270nH 15 ...
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Si4840/44-DEMO Table 3. Si4840/44-DEMO Board Bill of Materials Rev. 1.3 (Continued) Item Qty Reference LCD1 ANT1 59 1 BAT1 60 4 S11- ...
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Schematics and Gerbers point Test VCC [2] SHUTDOWN VR2-A VR2-B VCC TP2 TP1 VCC U1 LNA_EN LOUT 1 24 IRQ ROUT 2 23 TUNE1 DBYP 3 22 TUNE2 VDD2 4 21 BAND VDD1 BAND ...
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Si4840/44-DEMO R2 1M C41 0. VCC RESET C42 0.1u XTALI [1] C32 22p Y2 32.768KHz C35 22p C37 0.1u VCC C44 0.1u C38 0.1u LCD_C1 [2] LCD_C2 [2] VCC C40 0.1u Figure 6. Si4840/44 DEMO Board Rev. ...
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S7 UP/VOL+ [2] KEY_C0 S8 DOWN/VOL- [2] KEY_C1 S9 MONO/ST [2] KEY_C2 S10 SETTING [2] KEY_C3 [2] KEY_R0 [2] KEY_R1 BZ [2] Figure 7. Si4840/44 DEMO Board Rev. 1.3 Schematic – MCU Portion ( Si4840/44-DEMO S3 SETTING MENU: ...
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Si4840/44-DEMO Figure 8. Si4840/44-DEMO Board Gerber Rev 1.3 20 Rev 0.1 ...
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N : OTES Si4840/44-DEMO Rev 0.1 21 ...
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... Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders 22 Rev 0 ...