Part: Si4463/61/60-C — Silicon Laboratories

Type: High-Performance, Low-Current Transceiver

Description: The Si446x devices are high-performance, low-current transceivers covering sub-GHz frequency bands from 142 to 1050 MHz, offering outstanding sensitivity of -129 dBm and up to +20 dBm output power (Si4463) with extremely low active and standby current consumption.

Operating Conditions:

• Supply voltage: 1.8 to 3.8 V
• Operating temperature: -40 to +85 °C
• Frequency range: 142-1050 MHz
• Data rate: 100 bps to 1 Mbps

Key Specs:

• Receive sensitivity: -129 dBm (500 bps, GFSK, 169 MHz)
• Max output power (Si4463): +20 dBm
• TX current (Si4463): 88 mA (+20 dBm, Class-E match, 915 MHz, 3.3 V)
• RX current (High Performance Mode): 13.7 mA (915 MHz, 40 kbps)
• Shutdown current: 30 nA
• Synthesizer frequency range: 142-1050 MHz
• Adjacent channel selectivity: -69 dB (169 MHz, 12.5 kHz channel spacing)
• Blocking (1 MHz offset): -79 dB

Features:

• (G)FSK, 4(G)FSK, (G)MSK, OOK modulation
• PA support for +27 or +30 dBm
• Ultra low current powerdown modes (30 nA shutdown)
• Preamble sense mode
• Fast wake and hop times
• Excellent selectivity performance
• Antenna diversity and T/R switch control
• Highly configurable packet handler with 64 byte TX and RX FIFOs
• Auto frequency control (AFC) and Automatic gain control (AGC)
• Low battery detector and Temperature sensor
• IEEE 802.15.4g and WMBus compliant

Applications:

• Smart metering (802.15.4g and WMBus)
• Remote control
• Home security and alarm
• Telemetry
• Garage and gate openers
• Remote keyless entry
• Home automation
• Industrial control
• Sensor networks
• Health monitors
• Electronic shelf labels

Package:

• 20-Pin QFN package

• Frequency range = 142-1050 MHz
• Receive sensitivity = -129 dBm
• Modulation

(G)FSK, 4(G)FSK, (G)MSK

• OOK
• Max output power
• +20 dBm (Si4463)
• +16 dBm (Si4461)
• +13 dBm (Si4460)
• PA support for +27 or +30 dBm
• Low active power consumption
• 10/13 mA RX
• 18 mA TX at +10 dBm (Si4460)
• Ultra low current powerdown modes
• 30 nA shutdown, 40 nA standby
• Preamble sense mode
• 6 mA average RX current at 1.2 kbps
• 10 μA average RX current at 50 kbps and 1 sec sleep interval
• Fast preamble detection
• 1 byte preamble detection
• Data rate = 100 bps to 1 Mbps
• Fast wake and hop times
• Power supply = 1.8 to 3.8 V
• Excellent selectivity performance
• 69 dB adjacent channel
• 79 dB blocking at 1 MHz
• Antenna diversity and T/R switch control
• Highly configurable packet handler
• TX and RX 64 byte FIFOs
• 129 bytes dedicated Tx or Rx
• Auto frequency control (AFC)
• Automatic gain control (AGC)
• Low BOM
• Low battery detector
• Temperature sensor
• 20-Pin QFN package
• IEEE 802.15.4g and WMBus compliant
• Suitable for FCC Part 90 Mask D, FCC part 15.247, 15,231, 15,249, ARIB T-108, T-96, T-67, RCR STD-30, China regulatory
• ETSI Category I Operation EN300 220

• Smart metering (802.15.4g and WMBus)
• Remote control
• Home security and alarm
• Telemetry
• Garage and gate openers

SI4463 QFN-20 Pinout

Notes

• SPI Interface: Pins 12–15 form the 4-line serial data bus (SCLK, SDI, SDO, nSEL).
• GPIO Pins: GPIO1 and GPIO3 have extended configurable functions beyond basic I/O.
• Power Supply: Two VDD pins (6, 8) should both be connected to +3.3 V (nominal, range +1.8 to +3.8 V).
• Ground: Pin 18 (GND) and the exposed paddle (PADDLE_GND) both provide ground connections; the paddle is critical for RF performance.
• Crystal: Pins 16–17 (XOUT/XIN) support 25–32 MHz crystals or external clock sources.

Table 1. DC Characteristics 1

Notes:

1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and from -40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated.

2. Measured on direct-tie RF evaluation board.

Table 2. Synthesizer AC Electrical Characteristics

Table 2. Synthesizer AC Electrical Characteristics

Table 3. Receiver AC Electrical Characteristics 1,2

1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and from -40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated.
2. For PER tests, 48 preamble symbols, 4 byte sync word, 10 byte payload and CRC-32 was used.
3. Measured over 50000 bits using PN9 data sequence and data and clock on GPIOs. Sensitivity is expected to be better if reading data from packet handler FIFO especially at higher data rates.

Table 3. Receiver AC Electrical Characteristics 1,2 (Continued)

1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and from -40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated.
2. For PER tests, 48 preamble symbols, 4 byte sync word, 10 byte payload and CRC-32 was used.
3. Measured over 50000 bits using PN9 data sequence and data and clock on GPIOs. Sensitivity is expected to be better if reading data from packet handler FIFO especially at higher data rates.

Figure 19 illustrates the package details for the Si446x. Table 17 lists the values for the dimensions shown in the illustration.

Figure 19. 20-Pin Quad Flat No-Lead (QFN)

Table 17. Package Dimensions

1. All dimensions are shown 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 MO-220, Variation VGGD-8.
4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.