SI4311-B10-GM Silicon Laboratories Inc, SI4311-B10-GM Datasheet
![IC RX FSK 315/434MHZ 20VQFN](/photos/14/11/141117/20-vqfn-b10_sml.jpg)
SI4311-B10-GM
Specifications of SI4311-B10-GM
Related parts for SI4311-B10-GM
SI4311-B10-GM Summary of contents
Page 1
... Home automation and security Description The Si4311 is a fully-integrated FSK CMOS RF receiver that operates in the unlicensed 315 and 433.92 MHz ultra high frequency (UHF) bands designed for high-volume, cost-sensitive RF receiver applications, such as set-top box RF receivers, remote controls, garage door openers, home automation, security, remote keyless entry systems, wireless POS, and telemetry ...
Page 2
Si 4311 2 Rev. 0.6 ...
Page 3
... Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.9. Reset Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4. Pin Descriptions: Si4311-B11- Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6. Package Markings (Top Marks 6.1. Si4311 Top Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.2. Top Mark Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7. Package Outline: Si4311-B11- PCB Land Pattern: Si4311-B11- Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Rev. 0.6 Si4311 Page 3 ...
Page 4
... Exposure beyond recommended operating conditions for extended periods may affect device reliability. 2. The Si4311 device is a high-performance RF integrated circuit with certain pins having an ESD rating of < HBM. Handling and assembly of this device should only be done at ESD-protected workstations. ...
Page 5
... MHz unless otherwise noted) Test Condition Reset asserted 500 µA 0 OUT I = –500 µA OUT Symbol t SRST t SRST 70% 30% Figure 1. Reset Timing Rev. 0.6 Si4311 Min Typ Max Unit — 20 — mA — 2 TBD µA — 0 –0.3 — 0 –10 — 10 µA –10 — 10 µA — ...
Page 6
... Si 4311 Table 5. Si4311 Receiver Characteristics ( ° 3 Ω Parameter -3 (Note 1) Sensitivity @ BER = 10 3 Data Rate Adjacent Channel Rejection 1 ±200 kHz Alternate Channel Rejection 1,2 ±400 kHz 1,2 Image Rejection 128 kHz 1,2 Blocking 1,2 Maximum RF Input Power 3 Input IP3 3 FSK Deviation Input Range ...
Page 7
... Table 6. Crystal Characteristics ( ° Parameter Crystal Oscillator Frequency Crystal ESR XTL1, XTL2 Input Capacitance Symbol Test Condition Min — — — Rev. 0.6 Si4311 Typ Max Unit 16 — MHz — 100 11 — ...
Page 8
... Si 4311 2. Typical Application Schematic RX VDD ANTENNA Figure 2. Si4311 FSK 433.92 MHz Application Schematic 2.1. Typical Application Bill of Materials Table 7. Si4311 Typical Application Bill of Materials Component(s) C1 Supply bypass capacitor, 22 nF, 20%, Z5U/X7R C2 Time constant capacitor, 1 µF C3 Antenna matching capacitor for 433.92 MHz and 62 nH for 315 MHz R1 Time constant resistor, 20 k ...
Page 9
... Si4311 since all IF channel filtering is performed in the digital domain. 3.3. Carrier Frequency Selection The Si4311 can be tuned to either 315 or 433.92 MHz by driving Pin 6 (315/434) to VDD or GND. The 315 MHz operation is chosen by driving Pin 6 (315/434) to VDD, and 433.92 MHz operation is chosen by driving Pin 6 (315/434) to GND ...
Page 10
... Table 8. Carrier Frequency Selection 3.4. Bit Time BT[1:0] Selection The Si4311 can operate with data rates kbps non-return to zero (NRZ) data or 5 kbps Manchester encoded data. However, FSK modulation uses other encoding schemes, such as pulse width modulation (PWM) and pulse position modulation (PPM) in which a bit can be encoded into a pulse with a certain duty cycle or pulse width (see Figure 4) ...
Page 11
... IF channel filter that is large enough to accommodate the transmitter frequency error, but this leads to degraded sensitivity. The Si4311 uses AFC to re-center the channel bandwidth about the two FSK tones as shown in Figure 5 (c) to maintain excellent sensitivity with a small IF channel filter. The algorithm requires one FSK tone to be in-band and at most three alternating sequences of 0/1 data typically found in a preamble plus 700 µ ...
Page 12
... Reset Pin Driving the RST pin (pin 4) low will disable the Si4311 and place the device into reset mode. All active blocks in the device are powered off in this mode, bringing the current consumption to <10 uA. The Si4311 is enabled by driving the RST pin (pin 4) to VDD. Refer to Table 4 " ...
Page 13
... Pin Descriptions: Si4311-B11-GM VDD RFGND RX_IN RST AFC Pin Number(s) Name VDD 2 RFGND 3 RX_IN 4 RST 5 AFC 6 315/434 7, 12, GND PAD GND 9 XTL1 10 XTL2 13 DOUT 14, 15 BT[1:0] 16,17 DEV[1:0] 18,19, BT0 3 GND 14 PAD Description Supply voltage, may connect to external battery. RF ground. Connect to ground plane on PCB. ...
Page 14
... Si 4311 5. Ordering Guide Part Number* Si4311-B11-GM 315/433.92 MHz FSK Receiver *Note: Add an “(R)” at the end of the device part number to denote tape and reel option. 14 Description Rev. 0.6 Package Operating Type Temperature QFN – °C Pb-free ...
Page 15
... Die Revision Line 2 Marking: TTT = Internal Code Circle = 0.5 mm Diameter Line 3 Marking: (Bottom-Left Justified) YWW = Date Code Figure 6. Si4311 Top Mark Example 11 = Si4311 11 = Firmware Revision 1 Revision B Die Internal tracking code Pin 1 Identifier Assigned by the Assembly House. Corresponds to the last digit of the current year (Y) and the workweek (WW) of the mold date ...
Page 16
... Si 4311 7. Package Outline: Si4311-B11-GM Figure 7 illustrates the package details for the Si4311-B11-GM. Table 12 lists the values for the dimensions shown in the illustration. Figure 7. 20-Pin Quad Flat No-Lead (QFN) Symbol Millimeters Min Nom A 0.80 0.85 A1 0.00 0.02 b 0.20 0.25 c 0.27 0.32 D 3.00 BSC D2 1 ...
Page 17
... PCB Land Pattern: Si4311-B11-GM Figure 8 illustrates the PCB land pattern details for the Si4311-B11-GM. Table 13 lists the values for the dimensions shown in the illustration. Figure 8. PCB Land Pattern Rev. 0.6 Si4311 17 ...
Page 18
Si 4311 Table 13. PCB Land Pattern Dimensions Symbol Millimeters Min 2.10 Notes: General 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and tolerancing is per ...
Page 19
... Table 5 "Si4311 Receiver Characteristics" Added AFC hold time description to section “3.6. Automatic Frequency Centering (AFC)” Added reference clock drive capability to section “3.8. Crystal Oscillator” Revision 0.5 to Revision 0.6 Updated part number to Si4311-B11-GM Rev. 0.6 Si4311 19 ...
Page 20
... Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap- plication, 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. ...