Si 4 8 2 5 - A10 B R O A D C A S T M E C H A N I C A L TU N I N G A M / F M / S W R A D I O R EC EIVER Features Worldwide FM band support (64–109 MHz) Worldwide AM band support (504–1750 kHz) SW band support (2.3–28.5 MHz) No manual alignment necessary Mono audio output Selectable support AM/FM/SW regional bands Enhanced FM/SW band coverage Automatic frequency control (AFC) Integrated LDO regulator 2.0 to 3.6 V supply voltage Wide range of ferrite loop sticks and air loop antennas supported 16-pin SOIC RoHS-compliant Direct volume control Not EN55020 compliant* *Note: For consumer applications that require EN 55020 compliance, use Si483x. Ordering Information: See page 14. Applications Pin Assignments Table and portable radios Mini/micro systems CD/DVD players Boom boxes Modules Clock radios Mini HiFi Entertainment systems Si4825-A10 (SOIC) 16 AOUT 2 15 GND 3 14 VDD 4 13 XTALI NC 5 12 XTALO FMI 6 11 VOL- RFGND 7 10 VOL+ 8 9 RST TUNE1 The Si4825 is the entry level mechanical-tuned digital CMOS AM/FM/SW radio receiver IC that integrates the complete receiver function from antenna input to audio output. The Si4825 extends Silicon Laboratories multi-band tuner family, and further increases the ease and attractiveness of design radio reception to audio devices through small size and board area, minimum component count, and superior, proven performance. The Si4825 requires a simple application circuit and removes any requirements for manually tuning components during the manufacturing process. The receiver has very low power consumption, runs off two AAA batteries, and delivers the performance benefits of digital tuning to the analog radio market. Functional Block Diagram Si4825 Si4830/34 ADC AMI AM ANT 1 LNA_EN Description RFGND LNA DSP DAC AOUT TUNE2 BAND AMI This product, its features, and/or its architecture is covered by one or more of the following patents, as well as other patents, pending and issued, both foreign and domestic: 7,127,217; 7,272,373; 7,272,375; 7,321,324; 7,355,476; 7,426,376; 7,471,940; 7,339,503; 7,339,504. ADC FM ANT FMI AGC 0/90 TUNE1/2 ADC CONTROL INTERFACE BAND VDD XTAL OSC LNA_EN REG Rev. 1.0 5/13 RST 2.0~3.6V AFC VOL+/- XTALI Copyright © 2013 by Silicon Laboratories Si4825 This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Si4825-A10 2 Rev. 1.0 Si4825-A10 TABLE O F C ONTENTS Section Page 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.3. AM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.4. SW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.5. Frequency Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.6. Band Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.7. Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.8. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5. Pin Descriptions: Si4825-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7. Package Outline: Si4825-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8. PCB Land Pattern: Si4825-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 9. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9.1. Si4825-A10 Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 9.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 10. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Rev. 1.0 3 Si4825-A10 1. Electrical Specifications Table 1. Recommended Operating Conditions1,2 Parameter Symbol Min Typ Max Unit VDD 2 — 3.6 V VDDRISE 10 — — µs TA 0 25 70 °C Supply Voltage3 Power Supply Powerup Rise Time Ambient Temperature Range Test Condition Note: 1. Typical values in the data sheet apply at VDD = 3.3 V and 25 °C unless otherwise stated. 2. All minimum and maximum specifications in the data sheet apply across the recommended operating conditions for minimum VDD = 2.7 V. 3. Operation at minimum VDD is guaranteed by characterization when VDD voltage is ramped down to 2.0 V. Part initialization may become unresponsive below 2.3 V. Table 2. DC Characteristics (VDD = 2.7 to 3.6 V, TA = 0 to 70 °C) Parameter Symbol Test Condition Min Typ Max Unit IFM — 20.0 — mA IAM — 19.0 — mA IDDPD — 10 — µA FM Mode Supply Current* AM/SW Mode Supply Current* Supplies and Interface VDD Powerdown Current *Note: Specifications are guaranteed by characterization. 4 Rev. 1.0 Si4825-A10 Table 3. Reset Timing Characteristics (VDD = 2.7 to 3.6 V, TA = 0 to 70 °C) Parameter Symbol Min Typ Max Unit RSTB Pulse Width tPRST 100 — — µs VDD valid time before RSTB rises tSRST 100 — — µs RSTB low time before VDD becomes invalid tRRST 0 — — µs Notes: 1. RSTB must be held low for at least 100 µs after the voltage supply has been ramped up. 2. RSTB needs to be asserted (pulled low) prior to the supply voltage being ramped down. tSRST tPRST tRRST VDD RSTB Figure 1. Reset Timing Rev. 1.0 5 Si4825-A10 Table 4. FM Receiver Characteristics1,2 (VDD = 2.7 to 3.6 V, TA = 0 to 70 °C) Parameter Min Typ Max Unit 64 — 109 MHz — 4.0 — µV EMF LNA Input Resistance4,5 — 4 — k LNA Input Capacitance4,5 — 5 — pF — 50 — dB — 105 — dBµV EMF Input Frequency Symbol fRF Sensitivity with Headphone Network Test Condition (S+N)/N = 26 dB 3 m = 0.3 AM Suppression4,5,6,7 Input IP34,8 Adjacent Channel Selectivity4 ±200 kHz — 45 — dB Alternate Channel Selectivity4 ±400 kHz — 60 — dB Audio Output Voltage5,6,7 — 72 — mVRMS Audio Mono S/N5,6,7,9,10 — 45 — dB Audio Frequency Response Low4 –3 dB — — 30 Hz Audio Frequency Response High4 –3 dB 15 — — kHz — 0.1 0.5 % Audio THD6,5,11 Audio Output Load Resistance4,10 RL Single-ended 10 — — k Audio Output Load Capacitance4,10 CL Single-ended — — 50 pF Notes: 1. Additional testing information is available in “AN569: Si4831/35/36/20/24/25-DEMO Board Test Procedure.” Volume = maximum for all tests. Tested at RF = 98.1 MHz. 2. To ensure proper operation and receiver performance, follow the guidelines in “AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers. 3. Frequency is 64~109 MHz. 4. Guaranteed by characterization. 5. VEMF = 1 mV. 6. FMOD = 1 kHz, MONO, and L = R unless noted otherwise. 7. f = 22.5 kHz. 8. |f2 – f1| > 2 MHz, f0 = 2 x f1 – f2. 9. BAF = 300 Hz to 15 kHz, A-weighted. 10. At AOUT pin. 11. f = 75 kHz. 6 Rev. 1.0 Si4825-A10 Table 5. AM/SW Receiver Characteristics1, 2 (VDD = 2.7 to 3.6 V, TA = 0 to 70 °C) Parameter Symbol Test Condition Min Typ Max Unit fRF Medium Wave (AM) 504 — 1750 kHz Short Wave (SW) 2.3 — 28.5 MHz (S+N)/N = 26 dB — 30 — µV EMF Large Signal Voltage Handling5 THD < 8% — 300 — mVRMS Power Supply Rejection Ratio5 ∆VDD = 100 mVRMS, 100 Hz — 40 — dB Audio Output Voltage3,6 — 54 — mVRMS Audio S/N3,4,6 — 45 — dB Audio THD3,6 — 0.1 — % 180 — 450 µH Input Frequency Sensitivity3,4,5 Antenna Inductance5,7 Notes: 1. Additional testing information is available in “AN569: Si4831/35/36/20/24/25-DEMO Board Test Procedure.” Volume = maximum for all tests. Tested at RF = 6 MHz. 2. To ensure proper operation and receiver performance, follow the guidelines in “AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers. 3. FMOD = 1 kHz, 30% modulation, 2 kHz channel filter. 4. BAF = 300 Hz to 15 kHz, A-weighted. 5. Guaranteed by characterization. 6. VIN = 5 mVrms. 7. Stray capacitance on antenna and board must be < 10 pF to achieve full tuning range at higher inductance levels. Table 6. Reference Clock and Crystal Characteristics (VDD = 2.7 to 3.6 V, TA = 0 to 70 °C) Parameter Symbol Test Condition Min Typ Max Unit — 32.768 — kHz –100 — 100 ppm Crystal Oscillator Frequency — 32.768 — kHz Crystal Frequency Tolerance –100 — 100 ppm — — 3.5 pF Reference Clock XTALI Supported Reference Clock Frequencies Reference Clock Frequency Tolerance for XTALI Crystal Oscillator Board Capacitance Rev. 1.0 7 Si4825-A10 Table 7. Thermal Conditions Parameter Symbol Min Typ Max Unit Thermal Resistance* JA — 80 — °C/W Ambient Temperature TA 0 25 70 °C Junction Temperature TJ — — 77 °C *Note: Thermal resistance assumes a multi-layer PCB with the exposed pad soldered to a topside PCB pad. Table 8. Absolute Maximum Ratings1,2 Parameter Symbol Value Unit Supply Voltage VDD –0.5 to 5.8 V Input Current3 IIN 10 mA Operating Temperature TOP –40 to 95 C Storage Temperature TSTG –55 to 150 C 0.4 VPK RF Input Level 4 Notes: 1. Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as specified in the operational sections of this data sheet. Exposure beyond recommended operating conditions for extended periods may affect device reliability. 2. The Si4825 devices are high-performance RF integrated circuits with certain pins having an ESD rating of < 2 kV HBM. Handling and assembly of these devices should only be done at ESD-protected workstations. 3. For input pins RST, VOL+, VOL–, XTALO, XTALI, BAND, TUNE2, TUNE1, LNA_EN. 4. At RF input pins, FMI and AMI. 8 Rev. 1.0 Si4825-A10 2. Typical Application Schematic 781( 5 N 6: 6 %$1' N 5 N 781( /1$B(1 %$1' 781( 1& )0, 5)*1' $0, 5 N )0 $0, $17 $0DQWHQQD X $0 95 & 5 N 781( N0 % )0, 8 & $287 *1' ;7$/, 9'' 92/ ;7$/2 567 5)*1' 7 92/ $0, X $17 $287 2SWLRQDO$0DLUORRSDQWHQQD 9'' N 567 5 & X & 9'' 729 X < & .+] & S S 2SWLRQDO Notes: 1. Place C4 close to VDD and GND pins. 2. Pin 15 GND connects directly to GND plane on PCB. 3. Pin 5 leave floating. 4. To ensure proper operation and receiver performance, follow the guidelines in "AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines." Silicon Labs will evaluate the schematics and layouts for qualified customers. 5. Pin 6 connects to the FM antenna interface and pin 8 connects to the AM antenna interface. 6. Place Si4825 as close as possible to antenna jack and keep the FMI and AMI traces as short as possible. 7. Recommend keeping the AM ferrite loop antenna at least 5 cm away from the tuner chip. 8. Keep the AM ferrite loop antenna at least 5 cm away from MCU, audio AMP, and other circuits which have AM interference. 9. Place the transformer T1 away from any sources of interference and even away from the I/O signals of the Si4825. Rev. 1.0 9 Si4825-A10 3. Bill of Materials Table 9. Si4825-A Bill of Materials Component(s) Value/Description Supplier C1 Reset capacitor 0.1 µF, ±20%, Z5U/X7R Murata C4 Supply bypass capacitor, 0.1 µF, ±20%, Z5U/X7R Murata C5 Coupling capacitor, 0.47 µF, ±20%, Z5U/X7R Venkel B1 Ferrite bead 2.5 k/100 MHz Murata Variable resistor (POT), 100 k, ±10% Kennon R1 Reset timing resistor, 100 k, ±5% Venkel R3 Resistor, 133 k, ±1%, Venkel R4 Resistor, 160 k, ±1% Venkel R5 Resistor, 67 k, ±1% Venkel R6 Resistor,140 k, ±1% Venkel U1 Si4825-A AM/FM/SW Analog Tune Analog Display Radio Tuner Silicon Laboratories S1 Band switch Any, depends on customer VR1 ANT1 Ferrite stick,180-450 μH Jiaxin Optional Components C2, C3 Y1 ANT2 10 Crystal load capacitors, 22 pF, ±5%, COG (Optional: for crystal oscillator option) 32.768 kHz crystal (Optional: for crystal oscillator option) Air loop antenna, 10–20 μH Venkel Epson or equivalent Various Rev. 1.0 Si4825-A10 4. Functional Description Si4825 Si4830/34 ADC AMI AM ANT RFGND LNA DSP DAC AOUT ADC FM ANT FMI AGC 0/90 TUNE1/2 ADC BAND VDD XTAL OSC LNA_EN REG RST 2.0~3.6V CONTROL INTERFACE VOL+/- XTALI AFC Figure 2. Si4825 Functional Block Diagram 4.1. Overview 4.2. FM Receiver The Si4825 is the entry level mechanical-tuned digital CMOS AM/FM/SW radio receiver IC that integrates the complete receiver function from antenna input to audio output. The Si4825 extends Silicon Laboratories multiband tuner family, and further increases the ease and attractiveness of design radio reception to audio devices through small size and board area, minimum component count, and superior, proven performance. The Si4825 requires a simple application circuit, and removes any requirements for manually tuning components during the manufacturing process. The Si4825 integrates a low noise amplifier (LNA) supporting the worldwide FM broadcast band (64 to 109 MHz) and the TV audio stations within the frequency range in China area are also supported. Leveraging Silicon Laboratories' proven and patented digital low intermediate frequency (low-IF) receiver architecture, the Si4825 delivers desired RF performance and interference rejection in AM, FM, and SW bands. The high integration and complete system production test simplifies design-in, increases system quality, and improves manufacturability. Pre-emphasis and de-emphasis is a technique used by FM broadcasters to improve the signal-to-noise ratio of FM receivers by reducing the effects of high frequency interference and noise. When the FM signal is transmitted, a pre-emphasis filter is applied to accentuate the high audio frequencies. All FM receivers incorporate a de-emphasis filter which attenuates high frequencies to restore a flat frequency response. Two time constants are used in various regions. The deemphasis time constant can be chosen to be 50 or 75 µs. Rev. 1.0 11 Si4825-A10 4.3. AM Receiver 4.5. Frequency Tuning The highly integrated Si4825-A10 supports worldwide AM band reception from 504 to 1750 kHz with five subbands using a digital low-IF architecture with a minimum number of external components and no manual alignment required. This patented architecture allows for high-precision filtering, offering excellent selectivity and SNR with minimum variation across the AM band. The Si4825 supports the worldwide AM band with five sub-bands. One of the bands is a universal AM band (AM4, 520–1730 kHz) supporting both 9 kHz and 10 kHz channel spaces for all regional AM standards of the world. Similar to the FM receiver, the Si4825-A10 optimizes sensitivity and rejection of strong interferers, allowing better reception of weak stations. A valid channel can be found by tuning the potentiometer that is connected to the TUNE1 and TUNE2 pin of the Si4825-A10 chip. To offer maximum flexibility, the receiver supports a wide range of ferrite loop sticks from 180–450 µH. An air loop antenna is supported by using a transformer to increase the effective inductance from the air loop. Using a 1:5 turn ratio inductor, the inductance is increased by 25 times and easily supports all typical AM air loop antennas, which generally vary between 10 and 20 µH. 4.4. SW Receiver The Si4825 supports 36 short wave (SW) band receptions from 2.3 to 28.5 MHz, 18 of which are meter wave band (Narrow), and the rest of the SW bands are with wider frequency range that can be used in SW radio with 1 or 2 SW bands. Si4825 supports extensive short wave features such as minimal discrete components and no factory adjustments. The Si4825 supports using the FM antenna to capture short wave signals. 4.6. Band Select The Si4825-A10 supports worldwide AM band with five sub-bands, US/Europe/Japan/China FM band with five sub-bands, and SW band with 36 sub-bands. For details on band selection, refer to “AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines." 4.7. Volume Control The Si4825 not only allows customers to use the traditional PVR wheel volume control through an external speaker amplifier, it also supports direct digital volume control through pins 10 and pin 11 by using volume up and down buttons. Refer to "AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines." 4.8. Reset, Powerup, and Powerdown Setting the RSTB pin low will disable analog and digital circuitry, reset the registers to their default settings, and disable the bus. Setting the RSTB pin high will bring the device out of reset. Figure 1 shows typical reset, startup, and shutdown timings for the Si4825. RSTB must be held low (asserted) during any power supply transitions and kept asserted as specified in Figure 1 after the power supplies are ramped up and stable. Failure to assert RSTB as indicated here may cause the device to malfunction and may result in permanent device damage. A powerdown mode is available to reduce power consumption when the part is idle. Putting the device in powerdown mode will disable analog and digital circuitry while keeping the bus active. 12 Rev. 1.0 Si4825-A10 5. Pin Descriptions: Si4825-A10 1 16 AOUT 2 15 GND 3 14 VDD 4 13 XTALI NC 5 12 XTALO FMI 6 11 VOL- RFGND 7 10 VOL+ 8 9 RST LNA_EN TUNE1 TUNE2 BAND AMI Pin Number(s) Name 1 LNA_EN Description 2 TUNE1 Frequency tuning 3 TUNE2 Frequency tuning 4 BAND Band selection and de-emphasis selection 5 NC No connect. Leave floating. 6 FMI FM RF inputs. FMI should be connected to the antenna trace. 7 RFGND 8 AMI AM RF input. AMI should be connected to the AM antenna. 9 RST Device reset (active low) input 10 VOL+ Volume button up 11 VOL– Volume button down 12 XTALO Crystal oscillator output 13 XTALI Crystal oscillator input/external reference clock input 14 VDD Supply voltage. May be connected directly to battery. 15 GND Ground. Connect to ground plane on PCB. 16 AOUT Audio output Enable SW external LNA. RF ground. Connect to ground plane on PCB. Rev. 1.0 13 Si4825-A10 6. Ordering Guide Part Number1,2 Description Package Type Operating Temperature/Voltage Si4825-A10-CS AM/FM/SW Broadcast Radio Receiver 16L SOIC Pb-free 0 to 70 °C 2.0 to 3.6 V Notes: 1. Add an “(R)” at the end of the device part number to denote tape and reel option. The devices will typically operate at 25 °C with degraded specifications for VDD voltage ramped down to 2.0 V. 2. The -C suffix in the part number indicates Consumer Grade product. Please visit www.silabs.com to get more information on product grade specifications. 14 Rev. 1.0 Si4825-A10 7. Package Outline: Si4825-A10 The 16-pin SOIC illustrates the package details for the Si4825-A10. Table 10 lists the values for the dimensions shown in the illustration. Figure 3. 16-Pin SOIC Rev. 1.0 15 Si4825-A10 Table 10. Package Dimensions Dimension A A1 A2 b c D E E1 e L L2 h θ aaa bbb ccc ddd Min — 0.10 1.25 0.31 0.17 Max 1.75 0.25 — 0.51 0.25 9.90 BSC 6.00 BSC 3.90 BSC 1.27 BSC 0.40 1.27 0.25 BSC 0.25 0° 0.50 8° 0.10 0.20 0.10 0.25 Notes: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing per ANSI Y14.5M-1994. 3. This drawing conforms to the JEDEC Solid State Outline MS-012, Variation AC. 4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components. 16 Rev. 1.0 Si4825-A10 8. PCB Land Pattern: Si4825-A10 Figure 4, “PCB Land Pattern,” illustrates the PCB land pattern details for the Si4825-A10-CS SOIC. Table 11 lists the values for the dimensions shown in the illustration. Figure 4. PCB Land Pattern Table 11. PCB Land Pattern Dimensions Dimension Feature (mm) C1 Pad Column Spacing 5.40 E Pad Row Pitch 1.27 X1 Pad Width 0.60 Y1 Pad Length 1.55 Notes: 1. This Land Pattern Design is based on IPC-7351 pattern SOIC127P600X165-16N for Density Level B (Median Land Protrusion). 2. All feature sizes shown are at Maximum Material Condition (MMC) and a card fabrication tolerance of 0.05 mm is assumed. Rev. 1.0 17 Si4825-A10 9. Top Marking 9.1. Si4825-A10 Top Marking 9.2. Top Marking Explanation Mark Method: Laser Pin 1 Mark: Mold Dimple (Bottom-Left Corner) Font Size: 0.71 mm (2.0 Point) Right-Justified Line 1 Mark Format: Custom Part Number Si4825A10 Circle = 1.3 mm Diameter “e3” Pb-Free Symbol YY = Year Line 2 Mark Format: WW = Work week Assigned by the Assembly House. Corresponds to the year and work week of the mold date. TTTTTT = Manufacturing code 18 Manufacturing Code from the Assembly Purchase Order form. Rev. 1.0 Si4825-A10 10. Additional Reference Resources Contact your local sales representatives for more information or to obtain copies of the following references: AN738: Si4825/36-A Antenna, Schematic, Layout, and Design Guidelines AN569: Si4831/35/36/20/24/25-DEMO Board Test Procedure Si4825-DEMO Board User’s Guide Rev. 1.0 19 Si4825-A10 DOCUMENT CHANGE LIST Revision 0.1 to Revision 0.8 Updated Table 1, “Recommended Operating Conditions” Updated Table 2, "DC Characteristics" Updated Table 4, "FM Receiver Characteristics" Updated Table 5, "AM/SW Receiver Characteristics" Updated Section "4.3. AM Receiver" Updated Section "10. Additional Reference Resources" Section 5 "Pin Descriptions: Si4825-A10" Revision 0.8 to Revision 1.0 20 Updated Table 3. "Reset Timing Characteristics" Inserted Section 4.8. "Reset, Powerup, and Powerdown" Rev. 1.0 Smart. Connected. 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