Si4836-DEMO Si4836 D EMO B OARD U SER ’ S G UIDE 1. Features ATAD (analog tune and analog display) AM/FM/SW radio Worldwide FM band support from 64–109 MHz with 5 bands, see Table 1 Worldwide AM band support from 504–1750 kHz with 5 bands, see Table 1 Worldwide SW band support 2.3–28.5 MHz with 18 wide bands or 18 narrow bands, see Table 1 Twelve positions band switch for selecting different band according to the target market Two AAA battery operations with working voltage down to 2.0 V Economical potentiometer for frequency tuning replaces more expensive variable capacitor (PVC) Potentiometer volume control Push button Bass/Treble control FM 50 µs or 75 µs de-emphasis SW Wideband/Narrow-band selection via a slide switch Table 1. Si4836 Band Sequence Definition Band Name Band Frequency Range De-emphasis (FM) Channel Space (AM) FM1 87–108 MHz 50 µs FM2 87–108 MHz 50 µs FM3 87–108 MHz 75 µs FM4 87–108 MHz 75 µs FM5 86.5–109 MHz 50 µs FM6 86.5–109 MHz 50 µs FM7 87.3–108.25 MHz 50 µs FM8 87.3–108.25 MHz 50 µs FM9 87.3–108.25 MHz 75 µs FM10 87.3–108.25 MHz 75 µs FM11 76–90 MHz 50 µs FM12 76–90 MHz 50 µs FM13 64–87 MHz 50 µs FM14 64–87 MHz 50 µs FM15 76–108 MHz 50 µs FM16 76–108 MHz 50 µs FM17 64–108 MHz 50 µs FM18 64–108 MHz 50 µs AM1 520–1710 kHz 10k Rev. 0.1 3/13 Note Demo Board Default Demo Board Default Demo Board Default Copyright © 2013 by Silicon Laboratories Si4836-DEMO Si4836-DEMO Table 1. Si4836 Band Sequence Definition Band Name Band Frequency Range De-emphasis (FM) Channel Space (AM) AM2 522–1620 kHz 9k AM3 504–1665 kHz 9k AM4 522–1728 kHz / 520–1730 kHz 9k / 10k AM5 510–1750 kHz 10k SW1 Note Demo Board Default SW Wide Band SW Narrow Band 2.3–10.0 MHz 2.30–2.49 MHz SW2 3.2–7.6 MHz 3.20–3.40 MHz Demo Board Default SW3 3.2–10.0 MHz 3.90–4.00 MHz Demo Board Default SW4 3.7–12.5 MHz 4.75–5.06 MHz SW5 3.9–7.5 MHz 5.6–6.4 MHz SW6 5.6–22 MHz 5.95–6.2 MHz SW7 5.8–12.1 MHz 6.8–7.6 MHz SW8 5.9–9.50 MHz 7.1–7.6 MHz SW9 5.9–18.0 MHz 9.2–10 MHz Demo Board Default SW10 7.0–16.0 MHz 11.45–12.25 MHz Demo Board Default SW11 7.0–23.0 MHz 11.6 –12.2 MHz Demo Board Default SW12 9.0–16.0 MHz 13.4–14.2 MHz SW13 9.0–22.0 MHz 13.57–13.87 MHz Demo Board Default SW14 9.5–18.0 MHz 15–15.9 MHz Demo Board Default SW15 10.0–16.0 MHz 17.1–18 MHz SW16 10.0–22.0 MHz 17.48–17.9 MHz SW17 13.0–18.0 MHz 21.2–22 MHz SW18 18.0–28.5 MHz 21.45 –21.85 MHz Demo Board Default 2. Overview This user’s guide describes the operation of the Silicon Labs Si4836-DEMO board rev1.1, Nov 20, 2012. The Silicon Laboratories Si4836-DEMO board is designed with the 16-pin SOIC packaged Si4836 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 analog display AM/FM/SW radio design. The Si4836-DEMO is designed with 1-layer PCB, allowing the lowest cost without sacrificing the RF performance. The demo board works with two AAA batteries and working voltage down to 2.0 V. 2 Rev. 0.1 Si4836-DEMO 3. Description Figure 1 and Figure 2 shows the physical layout of the board with key components indicated. Figure 1. Si4836-DEMO Board Top Side Figure 2. Si4836-DEMO Board Bottom Side Rev. 0.1 3 Si4836-DEMO Power: BAT1: 2 cells AAA battery holder S1: Power on / off Audio Connectors: J5: Stereo audio headphone output Antenna Selections: AM antenna: Ferrite stick antenna for AM J1: BNC connector for FM/ SW conductive testing or FM whip antenna J2: FM antenna selector 1 2 3 1-2: HP ANT (J5) 2-3: BNC (J1) J6: SMA connector for AM conductive testing J3: AM antenna selector 1 2 3 1-2: AM Ferrite Antenna 2-3: SMA (J6) Audio Output Test Point: For the general specification test, TP2 is the recommended audio signal test point. The audio test instrument should be connected to TP2 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. 4 3 GND 2 Lout 1 Rout Rev. 0.1 Si4836-DEMO Tuner Output Test Point: For the tuner specification test, TP1 is the recommended tuner output test point. The audio test instrument should be connected to TP1 to get accurate test results. 3 2 1 GND Lout Rout Main Components: U1: Silicon Laboratories Si4836 AM/FM/SW ATAD receiver U2: Audio amplifier Frequency scale: The analog display for tuning frequency Control Interface: VR1: Frequency tuning wheel. VR2: Volume control wheel J9: SMA connector for external RCLK S3: The push button for bass/treble control J8: The bass/treble function enable/disable selector 1 2 3 1-2: Disable 2-3: Enable J7: SW Wideband/Narrow-band selector 1 2 3 1-2: SW Wideband 2-3: SW Narrow-band Rev. 0.1 5 Si4836-DEMO J10: Tuner VDD connector (connect tuner Pin14 VDD to VBAT or VCC) 1 2 3 1-2: VBAT 2-3: VCC S2: Band switch for FM, AM, and SW 1 2 3 4 5 6 7 8 9 10 11 12 1: FM3 (87–108 MHz) 2: FM17 (64–108 MHz) 3: AM1 (520–1710 kHz) 4: AM2 (522–1620 kHz) 5: SW2 (N 3.2–3.4 MHz) (W 3.2–7.6 MHz) 6: SW3 (N 3.9–4.0 MHz) (W 3.2–10.0 MHz) 7: SW9 (N 9.2–10.0 MHz) (W 5.9–18.0 MHz) 8: SW10 (N 11.45–12.25 MHz) (W 7.0–16.0 MHz) 9: SW11 (N 11.6 –12.2 MHz) (W 7.0–23.0 MHz) 10: SW13 (N 13.57–13.87 MHz) (W 9.0–22.0 MHz) 11: SW14 (N 15.0–15.9 MHz) (W 9.5–18.0 MHz) 12: SW16 (N 17.48 –17.9 MHz) (W 10.0–22.0 MHz) Note: N = SW Narrow-band, W = SW Wideband 6 Rev. 0.1 Si4836-DEMO 4. Operation S4836-DEMO board, a complete analog tune and analog display radio, is very easy to operate: 1. Switch the SW Wideband/Narrow-band selector J7 to the desired SW Wideband or Narrow-band. 2. Switch the tuner VDD connector J10 to the desired VABT or VCC. 3. Switch the bass/treble function enable/disable selector J8 to the desired Disable or Enable. 4. Put two AAA batteries into the battery compartment. 5. Switch the power switch S1 to the ON position. The board will power up to a radio band according to the position of the band switch. 6. Change the band switch S2 to the desired band. 7. Rotate the tuning wheel VR1 and find the desired frequency. 8. Rotate the volume control wheel VR2 to get a comfortable volume. Note: For FM listening, the earphone cable must be connected to the board when J2 is set to "HP ANT" or an external antenna must be connected to the BNC connector when J2 is set to "BNC”. For AM listening, the ferrite antenna must be connected to the board and the J3 is set to "Ferrite" before Turning on the radio or band switching to AM. Rev. 0.1 7 Si4836-DEMO 5. Bill of Materials ATAD AM/FM/SW receiver IC Si4836 with external 32.768 kHz crystal oscillator support LM4910 Audio amplifier IC See Table 2 for details Table 2. Si4836-DEMO Board rev1.1 Bill of Materials 8 Item Qty Reference Description 1 6 C1 C6 C16 C19 C24 C39 CAP,SM,0603,X7R 0.1 µ 2 3 C23 C26 C27 CAP,SM,1210,X7R 220 µ 3 1 C13 CAP,SM,1210,X7R 47 µ 4 2 C14 C25 Electrolytic capacitor 5 2 C2 C3 CAP,SM,0603,X7R 22p 6 2 C30 C31 CAP,SM,0603,X7R 33n 7 1 C33 CAP,SM,0603,X7R 10p 8 1 C34 CAP,SM,0603,X7R 33p 9 4 C4 C7 C12 C21 CAP,SM,0603,X7R 10u 10 1 C15 CAP,SM,0603,X7R 4.7 µ 11 2 C5 C36 CAP,SM,0603,X7R 0.47 µ 12 2 C8 C10 CAP,SM,0603,X7R 100p 13 2 C11 C20 CAP,SM,0603,X7R 150p 14 2 C18 C22 CAP,SM,0603,X7R 330p 15 2 R25 R26 RES,SM,0603 0R 16 2 R17 R22 RES,SM,0603 12k 17 1 R27 RES,SM,0603 100R 18 1 R31 RES,SM,0603 1k 19 1 R32 RES,SM,0603 10R 20 1 R41 RES,SM,0603 120k 21 2 R3 R18 RES,SM,0603 2.2k 22 4 R5 R16 R21 R45 RES,SM,0603 200R 23 3 R6 R23 R34 RES,SM,0603 100k 24 2 R19 R20 RES,SM,0603 6.8k 25 4 R1 R2 R4 R13 RES,SM,0603 56k 26 1 R46 RES,SM,0603 4.7M 27 1 R36 RES,SM,0603,Tolerance ±1% 33k 28 1 R29 RES,SM,0603,Tolerance ±1% 140k 29 1 R43 RES,SM,0603,Tolerance ±1% 40k Rev. 0.1 Value 100 µ/4 V Si4836-DEMO Table 2. Si4836-DEMO Board rev1.1 Bill of Materials (Continued) Item Qty Reference Description 30 1 R44 RES,SM,0603,Tolerance ±1% 47k 31 5 R7 R9 R11 R12 R15 RES,SM,0603,Tolerance ±1% 10k 32 1 R8 RES,SM,0603,Tolerance ±1% 50k 33 4 R10 R28 R33 R35 RES,SM,0603,Tolerance ±1% 20k 34 1 R14 RES,SM,0603,Tolerance ±1% 60k 35 1 L1 RES,SM,0603 0R 36 1 L2 Inductor 270nH 270 nH 37 4 B4 B5 B6 B7 FERRITE BEAD,SM,0603 2.5k/100M 38 1 B1 FERRITE BEAD,SM,0603 NP 39 1 VR1 100k,±10%,Variable resistor(POT) 100k 40 1 VR2 10k,±20%,Variable resistor(POT) 10k 41 1 U1 SI4836,SOIC16 Si4836 42 1 U2 LM4910MA,SO8 LM4910MA 43 3 D1 D3 D5 LED 44 2 D2 D4 DIODE,SM,ESD,SOT23 45 1 Q1 TRANSISTOR NPN SOT23 46 1 Y1 CRYSTAL 47 1 J1 BNC VERTICAL 48 2 J6 J9 SMA VERTICAL 49 5 J2 J3 J7 J8 J10 Single pole two throw switch 50 1 J5 earphone jack 51 1 S1 Two pole two throw switch 52 1 S2 Single pole twelve throw switch 53 1 S3 Push button 54 1 ANT1 AW ferrite stick antenna 55 1 BAT1 BATTERY BOX,AAA*2 SIZE 56 2 TP1 TP2 CONN,TH,1x3,HDR Rev. 0.1 Value LED BAV99 2SC9018 32.768 kHz BNC For FM/SW testing 220 µH CONN,TH,1x3,HDR 9 Figure 3. Si4836-DEMO Board Rev 1.1 Schematic Si4836-DEMO 6. Schematic and Gerber 10 Rev. 0.1 Si4836-DEMO Figure 4. Si4836-DEMO Board Gerber Rev 1.1 Rev. 0.1 11 Smart. Connected. Energy-Friendly Products Quality Support and Community www.silabs.com/products www.silabs.com/quality community.silabs.com Disclaimer Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. 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