Si 4836- A10

B ROADCAST M ECHANICAL T U N I N G A M/ FM/SW R A D I O R E C E I V E R

Features
 Worldwide FM band support  Station and stereo LED indicators
(64–109 MHz)  China TV channels audio carrier
 Worldwide AM band support reception in FM band
(504–1750 kHz)  Automatic frequency control (AFC)
 SW band support  Integrated LDO regulator
(2.3–28.5 MHz)  2.0 to 3.6 V supply voltage
 No manual alignment necessary  Wide range of ferrite loop sticks and
 Stereo audio output air loop antennas supported
 Selectable support AM/FM/SW  16-pin SOIC
regional bands Ordering Information:
 RoHS-compliant See page 14.
 Enhanced FM/SW band coverage  Bass/Treble control
 EN55020 compliant
Pin Assignments
Applications
 Table and portable radios  Modules
Si4836-A10 (SOIC)
 Mini/micro systems  Clock radios
 CD/DVD players  Mini HiFi
LOUT 1 16 ROUT
 Boom boxes  Entertainment systems TUNE1 2 15 GND
TUNE2 3 14 VDD
Description BAND 4 13 XTALI
NC 5 12 XTALO

The Si4836 is the high performance receiver function from antenna input to audio FMI 6 11 STATION

output. The Si4836 extends Skyworks multi-band tuner family, and further RFGND STEREO/LNA_EN
7 10

AMI 8 RST
increases the ease and attractiveness of design radio reception to audio devices
9

through small size and board area, minimum component count, and superior,
proven performance. Si4836 enhances the FM and SW band coverage, further
supports China TV channels audio reception in FM band. The Si4836 removes
any requirements for manually tuning components during the manufacturing
process. The receiver has very low power consumption, runs off two AAA This product, its features, and/or its
batteries, and delivers the performance benefits of digital tuning to the analog architecture is covered by one or more of
radio market. the following patents, as well as other
patents, pending and issued, both
Functional Block Diagram foreign and domestic: 7,127,217;
7,272,373; 7,272,375; 7,321,324;
Si4836 7,355,476; 7,426,376; 7,471,940;
AMI ADC DAC
7,339,503; 7,339,504.
LOUT
AM
RFGND LNA DSP
ANT
ADC DAC ROUT
FM
ANT AGC
FMI
0/90 TUNE1/2

ADC
XTALI AFC CONTROL INTERFACE
BAND
2.0~3.6V VDD
XTAL
REG
OSC
Stereo

Station

Tone

RST

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Si 4836- A1 0

2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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 Si4836-A10
TA B L E OF 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. Bass and Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.8. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5. Pin Descriptions: Si4836-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7. Package Outline: Si4836-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8. PCB Land Pattern: Si4836-A10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.1. Si4836-A10 Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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Si 4836- A1 0
1. Electrical Specifications

Table 1. Recommended Operating Conditions1,2

Parameter Symbol Test Condition Min Typ Max Unit

Supply Voltage3 VDD 2 — 3.6 V

Power Supply Powerup Rise Time VDDRISE 10 — — µs

Ambient Temperature Range TA –15 25 85 °C

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 = –15 to 85 °C)

Parameter Symbol Test Condition Min Typ Max Unit

FM Mode

Supply Current* IFM — 20.0 — mA

AM/SW Mode

Supply Current* IAM — 19.0 — mA

Supplies and Interface
VDD Powerdown Current IDDPD — 10 — µA
*Note: Specifications are guaranteed by characterization.

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 Si4836-A10

Table 3. Reset Timing Characteristics

(VDD = 2.7 to 3.6 V, TA = –15 to 85 °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

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Si 4836- A1 0

Table 4. FM Receiver Characteristics1,2

(VDD = 2.7 to 3.6 V, TA = –15 to 85 °C)

Parameter Symbol Test Condition Min Typ Max Unit

Input Frequency fRF 64 — 109 MHz

Sensitivity with Headphone Network3 (S+N)/N = 26 dB — 2.2 — µV EMF

LNA Input Resistance4,5 — 4 — k

LNA Input Capacitance4,5 — 5 — pF

AM Suppression4,5,6,7 m = 0.3 — 50 — dB

Input IP34,8 — 105 — dBµV EMF

Adjacent Channel Selectivity4 ±200 kHz — 50 — dB

Alternate Channel Selectivity4 ±400 kHz — 65 — dB

Audio Output Voltage5,6,7,12 — 80 — mVRMS

Audio Mono S/N5,6,7,9,10 — 55 — dB

Audio Stereo S/N 3,4,5,7,9,10 — 55 dB

Audio Frequency Response Low4 –3 dB — — 30 Hz

Audio Frequency Response High4 –3 dB 15 — — kHz

Audio THD6,5,11 — 0.1 0.5 %

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.” Skyworks 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.
12. The test is done with Bass/Treble feature not enabled.

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 Si4836-A10

Table 5. AM/SW Receiver Characteristics1, 2

(VDD = 2.7 to 3.6 V, TA = –15 to 85 °C)

Parameter Symbol Test Condition Min Typ Max Unit

Input Frequency fRF Medium Wave (AM) 504 — 1750 kHz

Short Wave (SW) 2.3 — 28.5 MHz

Sensitivity3,4,5 (S+N)/N = 26 dB — 30 — µV EMF

Large Signal Voltage Handling5 THD < 8% — 300 — mVRMS

Power Supply Rejection Ratio5 ΔVDD = 100 mVRMS, 100 Hz — 40 — dB

Audio Output Voltage3,6,8 — 60 — mVRMS

Audio S/N3,4,6 — 55 — dB

Audio THD3,6 — 0.1 0.5 %

Antenna Inductance5,7 180 — 450 µH

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 = 520 kHz and 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.” Skyworks 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.
8. The test is done with Bass/Treble feature not enabled.

Table 6. Reference Clock and Crystal Characteristics

(VDD = 2.7 to 3.6 V, TA = –15 to 85 °C)

Parameter Symbol Test Condition Min Typ Max Unit

Reference Clock
XTALI Supported Reference Clock — 32.768 — kHz
Frequencies
Reference Clock Frequency Tolerance for –100 — 100 ppm
XTALI
Crystal Oscillator
Crystal Oscillator Frequency — 32.768 — kHz
Crystal Frequency Tolerance –100 — 100 ppm
Board Capacitance — — 3.5 pF

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Si 4836- A1 0

Table 7. Thermal Conditions

Parameter Symbol Min Typ Max Unit

Thermal Resistance* JA — 80 — °C/W

Ambient Temperature TA –15 25 85 °C

Junction Temperature TJ — — 92 °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

RF Input Level4 0.4 VPK

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 Si4836 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, STATION, STEREO/LNA_EN, XTALO, XTALI, BAND, TUNE2, TUNE1.
4. At RF input pins, FMI and AMI.

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 Si4836-A10
2. Typical Application Schematic

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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." Skyworks 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 Si4836 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 Si4836.

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Si 4836- A1 0
3. Bill of Materials

Table 9. Si4836-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

VR1 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 Si4836-A AM/FM/SW Analog Tune Analog Display Radio Tuner Skyworks

S1 Band switch Any, depends on

customer

ANT1 Ferrite stick,180–450 μH Jiaxin

Optional Components

C2, C3 Crystal load capacitors, 22 pF, ±5%, COG Venkel

(Optional: for crystal oscillator option)

Y1 32.768 kHz crystal (Optional: for crystal oscillator option) Epson or equivalent

ANT2 Air loop antenna, 10–20 μH Various

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 Si4836-A10
4. Functional Description

Si4836

AMI ADC DAC LOUT

AM
RFGND LNA DSP
ANT
ADC DAC ROUT
FM
ANT AGC
FMI
0/90 TUNE1/2

ADC
XTALI AFC CONTROL INTERFACE
BAND
2.0~3.6V VDD
XTAL
REG
OSC

Tone
Stereo

Station

RST
Figure 2. Si4836 Functional Block Diagram
4.1. Overview 4.2. FM Receiver
The Si4836 is the high performance mechanical-tuned The Si4836 integrates a low noise amplifier (LNA)
digital CMOS AM/FM/SW radio receiver IC that supporting the worldwide FM broadcast band (64 to
integrates the complete receiver function from antenna 109 MHz) and the TV audio stations within the
input to audio output. The Si4836 extends Skyworks frequency range in China area are also supported.
multi-band tuner family, and further increases the ease Pre-emphasis and de-emphasis is a technique used by
and attractiveness of design radio reception to audio FM broadcasters to improve the signal-to-noise ratio of
devices through small size and board area, minimum FM receivers by reducing the effects of high frequency
component count, and superior, proven performance. interference and noise. When the FM signal is
The Si4836 enhances the FM and SW band coverage transmitted, a pre-emphasis filter is applied to
and further supports China TV channels audio reception accentuate the high audio frequencies. All FM receivers
in FM band. The Si4836 removes any requirements for incorporate a de-emphasis filter which attenuates high
manually tuning components during the manufacturing frequencies to restore a flat frequency response. Two
process. time constants are used in various regions. The de-
Leveraging Skyworks' proven and patented digital low emphasis time constant can be chosen to be 50 or
intermediate frequency (low-IF) receiver architecture, 75 µs. Refer to "AN738: Si4825/36-A Antenna,
the Si4836 delivers desired RF performance and Schematic, Layout, and Design Guidelines.”
interference rejection in AM, FM, and SW bands. The The Si4836 also has advanced stereo blending that
high integration and complete system production test employs adaptive noise suppression. As a signal quality
simplifies design-in, increases system quality, and degrades, the Si4836 gradually combines the stereo left
improves manufacturability. and right audio channels to a mono audio signal to
maintain optimum sound fidelity under varying reception
conditions. The Si4836 can drive a stereo light with the
stereo/mono information so that the user can easily
discern the signal quality.

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Si 4836- A1 0
The stereo light up criteria are defined using both RSSI 4.5. Frequency Tuning
and the Left and Right separation levels as these two
A valid channel can be found by tuning the
specifications are the primary factors for stereo
potentiometer that is connected to the TUNE1 and
listening. The criteria can be set between two
TUNE2 pin of the Si4836 chip.
conditions: the Left and Right channels are separated
by more than 6 dB with RSSI at >20 dB or they are To offer easy tuning, the Si4836 also supports a station
separated by more than 12 dB with RSSI at >28 dB. LED light. It will light up the LED if the RF signal quality
The selection can be set up using different values of the passes the LED sensitivity threshold when tuned to a
external resister. Refer to "AN738: Si4825/36-A valid station.
Antenna, Schematic, Layout, and Design Guidelines.” 4.6. Band Select
4.3. AM Receiver The Si4836 supports worldwide AM band with five sub-
The highly integrated Si4836-A10 supports worldwide bands, US/Europe/Japan/China FM band with five sub-
AM band reception from 504 to 1750 kHz with five sub- bands, and SW band with 36 sub-bands. For details on
bands using a digital low-IF architecture with a minimum band selection, refer to “AN738: Si4825/36-A Antenna,
number of external components and no manual Schematic, Layout, and Design Guidelines."
alignment required. This patented architecture allows 4.7. Bass and Treble
for high-precision filtering, offering excellent selectivity
and SNR with minimum variation across the AM band. The Si4836 further supports bass and treble tone
The Si4836 supports the worldwide AM band with five control for superior sound quality. Pins 12 can be
sub-bands. One of the bands is a universal AM band configured for tone control with single push button if the
(AM4, 520–1730 kHz) supporting both 9 kHz and system can provide 32.768 kHz external clock to Pin13,
10 kHz channel spaces for all regional AM standards of allowing customers to adjust the bass and treble in a
the world. Similar to the FM receiver, the Si4836 cyclic way. For further configuration details, refer to
optimizes sensitivity and rejection of strong interferers, "AN738: Si4825/36-A Antenna, Schematic, Layout, and
allowing better reception of weak stations. Design Guidelines."
To offer maximum flexibility, the receiver supports a 4.8. Reset, Powerup, and Powerdown
wide range of ferrite loop sticks from 180–450 µH. An
Setting the RSTB pin low will disable analog and digital
air loop antenna is supported by using a transformer to
circuitry, reset the registers to their default settings, and
increase the effective inductance from the air loop.
disable the bus. Setting the RSTB pin high will bring the
Using a 1:5 turn ratio inductor, the inductance is
device out of reset.
increased by 25 times and easily supports all typical AM
air loop antennas, which generally vary between 10 and Figure 1 shows typical reset, startup, and shutdown
20 µH. timings for the Si4836. RSTB must be held low
(asserted) during any power supply transitions and kept
4.4. SW Receiver asserted as specified in Figure 1 after the power
The Si4836 supports 36 short wave (SW) band supplies are ramped up and stable. Failure to assert
receptions from 2.3 to 28.5 MHz, 18 of which are meter RSTB as indicated here may cause the device to
wave band (Narrow), and the rest of the SW bands are malfunction and may result in permanent device
with wider frequency range that can be used in SW damage.
radio with 1 or 2 SW bands. Si4836 supports extensive A powerdown mode is available to reduce power
short wave features such as minimal discrete consumption when the part is idle. Putting the device in
components and no factory adjustments. The Si4836 powerdown mode will disable analog and digital circuitry
supports using the FM antenna to capture short wave while keeping the bus active.
signals.

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 Si4836-A10
5. Pin Descriptions: Si4836-A10

LOUT 1 16 ROUT
TUNE1 2 15 GND
TUNE2 3 14 VDD
BAND 4 13 XTALI
NC 5 12 XTALO
FMI 6 11 STATION
RFGND 7 10 STEREO/LNA_EN
AMI 8 9 RST

Pin Number(s) Name Description

1 LOUT Left audio output
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 RF ground. Connect to ground plane on PCB.
8 AMI AM RF input. AMI should be connected to the AM antenna.
9 RST Device reset (active low) input
10 STEREO/LNA_EN Stereo indicator, enable the SW external LNA in SW mode.
11 STATION Station indicator
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 ROUT Right audio output

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Si 4836- A1 0
6. Ordering Guide

Package Operating
Part Number* Description
Type Temperature/Voltage

Si4836-A10-GS AM/FM/SW Broadcast Radio Receiver 16L SOIC –15 to 85 °C

Pb-free 2.0 to 3.6 V

*Note: 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.

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 Si4836-A10
7. Package Outline: Si4836-A10
The 16-pin SOIC illustrates the package details for the Si4836-A10. Table 10 lists the values for the dimensions
shown in the illustration.

Figure 3. 16-Pin SOIC

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Si 4836- A1 0

Table 10. Package Dimensions

Dimension Min Max
A — 1.75
A1 0.10 0.25
A2 1.25 —
b 0.31 0.51
c 0.17 0.25
D 9.90 BSC
E 6.00 BSC
E1 3.90 BSC
e 1.27 BSC
L 0.40 1.27
L2 0.25 BSC
h 0.25 0.50
θ 0° 8°
aaa 0.10
bbb 0.20
ccc 0.10
ddd 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.

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 Si4836-A10
8. PCB Land Pattern: Si4836-A10
Figure 4, “PCB Land Pattern,” illustrates the PCB land pattern details for the Si4836-A10-GS 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.

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Si 4836- A1 0
9. Top Marking
9.1. Si4836-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 Si4836A10
Circle = 1.3 mm Diameter “e3” Pb-Free Symbol

YY = Year Assigned by the Assembly House. Corresponds to the year

Line 2 Mark Format: WW = Work week and work week of the mold date.

TTTTTT = Manufacturing code Manufacturing Code from the Assembly Purchase Order
form.

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 Si4836-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
 Si4836-DEMO Board User’s Guide

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Si 4836- A1 0
DOCUMENT CHANGE LIST
Revision 0.1 to Revision 0.8
 Added ambient temperature range to "Table 1.
Recommended Operating Conditions"
 Updated "Functional Block Diagram"
 Updated Table 2, "DC Characteristics"
 Updated Table 4, "FM Receiver Characteristics"
 Updated Table 5, "AM/SW Receiver Characteristics"
 Updated Section "2.Typical Application Schematic"
 Updated Section “4.3. AM Receiver"
 Updated Section “4.7. Bass and Treble"
 Updated Section “5. Pin Descriptions: Si4836-A10"
 Updated Section "6. Ordering Guide"
 Updated Section "10. Additional Reference
Resources"
Revision 0.8 to Revision 1.0
 Updated Table 3. "Reset Timing Characteristics"
 Inserted Section 4.8. "Reset, Powerup, and
Powerdown"

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