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Overview
The SKY66430-11 is a multi-band multi-chip System-in-Package (SiP) supporting 5G Massive IoT (LTE-M/NB-IoT) platforms. The SiP integrates the entire RF front end, transceiver, power management, memory, and baseband modem for an LTE multi-band radio operating in the 698 to 2200 MHz frequency range. NOR flash, crystals, and a few passives external to the package complete the SiP implementation.
Front-End Section
The front-end section includes Rx low-pass filters, broadband PA with bias controller, Tx low-pass harmonic filter, and antenna switch.
Rx Section
Receive low-pass filters are integrated into the SIP along with the necessary matching to yield a 50 Ω single-ended impedance for the antenna. The filters provide a high level of rejection to out-of-band interferers, protecting the transceiver from high blocking signal levels and guaranteeing 3GPP LTE blocking test conformance. The Rx low-pass filters are cascaded with the low throw count switch to establish a lower insertion loss and noise figure than conventional LTE receivers.
Tx Section
The PA load-line is optimized for high efficiency while simultaneously meeting 3GPP ACLR and emissions mask specifications with LTE up to 6 RB. An integrated LPF is implemented to reject the PA and transceiver harmonics while at the same time minimizing any post PA loss for an optimized transmit current consumption. Out-of-band emissions performance is emphasized by the design to be 3GPP-compliant for low-band B5, B8, B12, B13, B14, B17, B18, B19, B20, B26, B28, B85 and mid-band B1/B2/B3/B4/B25/B66..
Transceiver Section
A direct-conversion RF solution using low power technology has the following functional characteristics:
Direct conversion in the Tx and Rx paths
On-chip Fractional-N frequency synthesizers
On-chip anti-alias filters
On-chip AGC circuit
On-chip reconstruction filters
On-chip calibration including VCO and DC offset correction in the Rx paths
Rx and Tx gain and phase correction loops between the RF and baseband
Software control for synthesizer, Tx/Rx, adjustment, and gain control
External clock reference of 38.4 MHz
Baseband Modem Section
DL processing block, handling LTE downlink physical layer (Rx)
UL processing block, handling LTE uplink physical layer (Tx)
Synchronization processing block, handling frequency search and synchronization to LTE network
Optimized for Cat-M1 channels defined in 3GPP Releases 13 and 14, upgradable to Release 15
Three high-speed UARTs with hardware flow control
One I2C master up to 3.4 Mbps
One SPI master and slave up to 13 MHz
Muxed GPIOs interruptible, with support of pulse counter and PWM functionality
Two UICC interfaces compliant with ETSI TS 102 221 specification, including SIM card removal detection and support for 1.8 V and 3 V voltage levels
Secured JTAG, with possibility of enabling or disabling the interface by hardware or secured software
*Skyworks Authorized Distributor
The SKY66430-11 is a multi-band multi-chip System-in-Package (SiP) supporting 5G Massive IoT (LTE-M/NB-IoT) platforms. The SiP integrates the entire RF front end, transceiver, power management, memory, and baseband modem for an LTE multi-band radio operating in the 698 to 2200 MHz frequency range. NOR flash, crystals, and a few passives external to the package complete the SiP implementation.
Front-End Section
The front-end section includes Rx low-pass filters, broadband PA with bias controller, Tx low-pass harmonic filter, and antenna switch.
Rx Section
Receive low-pass filters are integrated into the SIP along with the necessary matching to yield a 50 Ω single-ended impedance for the antenna. The filters provide a high level of rejection to out-of-band interferers, protecting the transceiver from high blocking signal levels and guaranteeing 3GPP LTE blocking test conformance. The Rx low-pass filters are cascaded with the low throw count switch to establish a lower insertion loss and noise figure than conventional LTE receivers.
Tx Section
The PA load-line is optimized for high efficiency while simultaneously meeting 3GPP ACLR and emissions mask specifications with LTE up to 6 RB. An integrated LPF is implemented to reject the PA and transceiver harmonics while at the same time minimizing any post PA loss for an optimized transmit current consumption. Out-of-band emissions performance is emphasized by the design to be 3GPP-compliant for low-band B5, B8, B12, B13, B14, B17, B18, B19, B20, B26, B28, B85 and mid-band B1/B2/B3/B4/B25/B66..
Transceiver Section
A direct-conversion RF solution using low power technology has the following functional characteristics:
Direct conversion in the Tx and Rx paths
On-chip Fractional-N frequency synthesizers
On-chip anti-alias filters
On-chip AGC circuit
On-chip reconstruction filters
On-chip calibration including VCO and DC offset correction in the Rx paths
Rx and Tx gain and phase correction loops between the RF and baseband
Software control for synthesizer, Tx/Rx, adjustment, and gain control
External clock reference of 38.4 MHz
Baseband Modem Section
DL processing block, handling LTE downlink physical layer (Rx)
UL processing block, handling LTE uplink physical layer (Tx)
Synchronization processing block, handling frequency search and synchronization to LTE network
Optimized for Cat-M1 channels defined in 3GPP Releases 13 and 14, upgradable to Release 15
Three high-speed UARTs with hardware flow control
One I2C master up to 3.4 Mbps
One SPI master and slave up to 13 MHz
Muxed GPIOs interruptible, with support of pulse counter and PWM functionality
Two UICC interfaces compliant with ETSI TS 102 221 specification, including SIM card removal detection and support for 1.8 V and 3 V voltage levels
Secured JTAG, with possibility of enabling or disabling the interface by hardware or secured software
*Skyworks Authorized Distributor
