Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

204642A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 22, 2017

1

PRODUCT SUMMARY

SKY68000-31: LTE Dual-Band Front-End Module for IoT

Applications

 Cellular IoT modem devices targeting low-power wide area

network (LPWAN):

 4G LTE technology capability

 Dedicated LTE half-duplex operation (HD-FDD) for

CAT0/CATM1/CATNB1

 Designed to meet 3GPP Rel-12 and Rel-13 specifications

(with compatible cellular transceiver)

 LTE dual-band modem products (low-band and mid-band):

 Band 13

 Band 4

 PAE optimized for Class 3 LTE output power (+23 dBm)

Features

 Cost-optimized front end for low-data-rate applications

 Low-loss post-PA transmit front end for enhanced transmitter

efficiency (compared to LTE-FDD radio front ends)

 Dual-band PA supporting APT mode of operation or Vcc fixed

supply (≥ 2.85 V)

 Integrated low-pass filters for harmonic rejection to comply with

spurious emission requirements

 Integrated SP4T antenna Tx/Rx switch

 Integrated Rx SAW filters for out of band rejection for both

Band 13 and Band 4

 Optimized to support LTE for 1 to 36 RB

 MIPI RFFE control interface, 2.0 compliant

 Pin-to-pin compatible with the SKY68001-31 and SKY68011-31

 Adaptive biasing scheme for maximum PA efficiencies

 Small, low-profile package (4 mm x 5 mm x 0.9 mm)

(MSL3 @ 260 °C per JEDEC J-STD-020)

 Lead (Pb)-free and RoHS-compliant

all applicable legislation and are halogen-free.

For additional information, refer to

Skyworks

SQ04–0074.

Description

The SKY68000-31 is a hybrid, dual-band multi-chip RF front-end

(RFFE) module supporting cellular LTE for CAT0/CATM1/CATNB1

(half-duplex system) transceiver platforms. The module integrates

the entire RF front end necessary for an LTE dual-band radio

operating in Band 13 and Band 4 including Rx SAW filters,

dual-band PA with bias controller, Tx low-pass harmonic filter,

antenna switch, and MIPI RFFE controller.

Tx Section

The PA load-line is optimized for high efficiency while

simultaneously meeting 3GPP ACLR and emissions mask

specifications with LTE up to 36 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 compliant for

Band 13 and Band 4.

Rx Section

Receive SAW filters are integrated in to the module along with the

necessary matching, yielding a 50

Ω single-ended impedance for

the antenna and Rx ports. The SAW filters provide a high level of

rejection to out-of-band interferers protecting the transceiver from

high blocking signal levels and to support 3GPP LTE blocking test

conformance. The Rx SAW filters cascaded with the low throw

count switch establishes a lower insertion loss and noise figure

than conventional LTE receivers.

MIPI RFFE Controller Interface

The SKY68000-31 functional operation is fully controllable by a

single MIPI interface which is used to drive the PA in various

optimized bias modes as well as providing band selection and

controlling the antenna switch Tx, Rx, and band selection.

Figure 1 shows the block diagram for the SKY68000-31.