Si4356
Si4356 S
TA NDALONE
S
UB
-GH
Z
R
ECEIVER
Features
Pin configurable
Frequency range = 315–917 MHz
Supply Voltage = 1.8–3.6 V
Receive sensitivity =
Up to –113 dBm
Modulation
(G)FSK
OOK
Low RX Current = 12 mA
Low standby current = 50 nA
Max data rate = 120 kbps
Automatic gain control (AGC)
System clock output
Low BOM
20-pin 3x3 mm QFN package
Applications
Remote control
Home security and alarm
Garage and gate openers
Remote keyless entry
Description
Silicon Laboratories' Si4356 is a pin-strap configurable, low current,
sub-GHz EZRadio® receiver. With no external MCU control needed, the
Si4356 provides a true plug-and-play receive option. Excellent sensitivity
up to –113 dBm allows for a longer operating range, while the low current
consumption of 12 mA active and 50 nA standby provides for superior
battery life. The Si4356 provides receive data as well as a system clock
output for use by an external microcontroller or decoder.
GND
RST
RXp
RXn
NC
GND
1
2
3
20
19
18
17
XOUT
16 GND
15 SEL1
14 RX_DATA / OUT1
13 STBY
12 MSTAT / OUT0
10
CLK_OUT
11 SEL0
SEL3
SEL2
8
VDD
Home automation
Industrial control
Sensor networks
Health monitors
Pin Assignments
XIN
9
GND
GND
4
5
6
7
VDD
20-pin QFN
(Top View)
Patents pending
Rev 1.2 1/16
Copyright © 2016 by Silicon Laboratories
Si4356
Si4356
Functional Block Diagram
XIN XOUT
RST
Synthesizer
30MHz XO
Rx Chain
÷
CLK_OUT
RXp
RXn
STBY
LNA
PGA
ADC
Rx Modem
RX_DATA / OUT1
MSTAT / OUT0
Configuration Decoder
VDD
GND
SEL0 SEL1 SEL2 SEL3
2
Rev 1.2
Si4356
T
ABLE
Section
OF
C
ONTENTS
Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.1. Definition of Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2. Typical Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3. Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5. Modes and Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1. Power on Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. Additional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1. System Clock Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10. PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
11.1. Si4356 Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
11.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Rev 1.2
3
Si4356
1. Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Ambient Temperature
Supply Voltage
I/O Drive Voltage
Symbol
T
A
V
DD
V
GPIO
Test Condition
—
—
—
Min
–40
1.8
1.8
Typ
25
—
—
Max
85
3.6
3.6
Unit
C
V
V
Table 2. DC Characteristics
*
Parameter
Standby Mode Current
RX Mode Current
Symbol
I
Standby
I
RX
Test Condition
Configuration retained, all other functions OFF
—
Min
—
—
Typ
50
12
Max
—
—
Unit
nA
mA
*Note:
All specifications guaranteed by production test unless otherwise noted. Production test conditions and max limits are
listed in the "Production Test Conditions" section of "1.1. Definition of Test Conditions" on page 8.
Table 3. Receiver Electrical Characteristics
1
Parameter
Frequency Range
Sensitivity
2
Symbol
F
RANGE
P
FSK
P
FSK
P
OOK
RX Channel Bandwidth
3
BER Variation vs Power
Level
3
BW
P
RX_RES
Test Condition
Only frequencies listed in Table 9
supported
BER < 0.1%, 2.4 kbps, (G)FSK,
Configuration = FSK1 (See Section 3.)
BER < 0.1%, 2.4 kbps, (G)FSK,
Configuration = FSK6 (See Section 3.)
BER < 0.1%, 2.4 kbps, OOK,
Configuration = OOK6 (See Section 3.)
—
Up to +5 dBm Input Level
—
100
—
Min
315
—
Typ
—
–113
–104
–111
—
0
—
535
0.1
Max
917
—
Unit
MHz
dBm
dBm
dBm
kHz
ppm
Notes:
1.
Test conditions and max limits are listed in section “1.1. Definition of Test Conditions”.
2.
Sensitivity measured at 434 MHz using a PN9 modulated input signal. Received signal is filtered, deglitched, and
retimed using an external RC filter (R = 1
k
, C = 47 nF) and MCU.
3.
Guaranteed by qualification. Qualification test conditions are listed in section “1.1. Definition of Test Conditions”.
4
Rev 1.2
Si4356
Table 3. Receiver Electrical Characteristics
1
(Continued)
Parameter
200
kHz Selectivity
3
400
kHz Selectivity
3
Symbol
C/I
1-CH
C/I
2-CH
Test Condition
Desired Ref Signal 3 dB above sensitiv-
ity, BER < 0.1%. Interferer is CW and
desired modulated with
2.4 kbps
F
= 30 kHz (G)FSK,
BT = 0.5,
Rx BW = 155 kHz,
Desired Ref Signal 3 dB above sensitiv-
ity, BER < 0.1% Interferer is CW and
desired modulated with 2.4 kbps
F
= 30 kHz (G)FSK, BT = 0.5,
RX BW = 155 kHz
IF = 468 kHz
Measured at RX pins
Min
—
—
Typ
–42
–50
Max
—
—
Unit
dB
dB
Blocking 1 MHz Offset
3
Blocking 8 MHz Offset
3
—
—
—
—
–57
–68
—
—
dB
dB
Image Rejection
3
Spurious Emissions
3
Im
REJ
P
OB_RX1
—
—
–35
—
—
–54
dB
dBm
Notes:
1.
Test conditions and max limits are listed in section “1.1. Definition of Test Conditions”.
2.
Sensitivity measured at 434 MHz using a PN9 modulated input signal. Received signal is filtered, deglitched, and
retimed using an external RC filter (R = 1
k
, C = 47 nF) and MCU.
3.
Guaranteed by qualification. Qualification test conditions are listed in section “1.1. Definition of Test Conditions”.
Table 4. Auxiliary Block Specifications
1
Parameter
XTAL Nominal Cap
3
XTAL Frequency
XTAL Series Resistance
XTAL Stability
Reset to RX Time
2
Symbol
—
—
—
—
t
RST
Test Condition
—
—
—
—
—
Min
—
—
—
—
—
Typ
10
30
—
±50
—
Max
—
—
50
—
20
Unit
pF
MHz
ppm
ms
Notes:
1.
Test conditions and max limits are listed in section in “1.1. Definition of Test Conditions”.
2.
Guaranteed by qualification. Qualification test conditions are listed in the "Qualification Test Conditions" subsection of
section “1.1. Definition of Test Conditions”.
3.
Targeted nominal capacitive load for both XIN and XOUT pins.
Rev 1.2
5
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