Applications • LTE Cat-M1, Cat-1 IOT (optimized to support up to

6RB)

• 5G IOT NTN Non-Terrestrial-Networks

• Universal modem products:

- Low-band: 5, 8, 12, 13, 14, 17, 18, 19, 20, 26, 28,

71, 85

- Mid-band: 1, 2, 3, 4, 24, 25, 39, 66, 70

• NTN L-Band (B24, n255)+ S-Band (n256)

• WCDMA handsets and CDMA

Features

• Low voltage positive bias supply: VBATT 3.0 V to

4.5 V

• High efficiency

- 48% at maximum power output

• Large dynamic range

• Small, low profile package

- 3.0 x 4.2 x 0.86 mm

- 14-pad configuration

• Power down control

• InGaP

• Supports low voltage VCC operation

• Digital Enable

• No VREF required

• CMOS compatible control signals

• Integrated Directional Coupler

Description

The SKY68040-11 is a multi-band Power Amplifier

Module (PAM) supporting LTE Cat-M1, Cat1 IOT

(optimized to support up to 6RB) and 5G IOT NTN Non-

Terrestrial-Networks transceiver.

The SKY68040-11 meets stringent spectral linearity

requirements for WCDMA, HSDPA, HSUPA, HSPA+

transmission with high power-added efficiency.

The module integrates a LTE multi-band radio

operating in lowband (5, 8, 12, 13, 14, 17, 18, 19, 20,

26, 28, 71, 85), mid-band (1, 2, 3, 4, 24,25, 39, 66, 70)

frequencies and NTN L-Band (B24, n255) + S-Band

(n256), including broadband PAs with bias/ gain

controller. A directional coupler integrated into the

module eliminates the need for any external coupler.

The single Gallium Arsenide (GaAs) Microwave

Monolithic Integrated Circuit (MMIC) contains all

active circuitry in the module. The MMIC contains onboard

bias circuitry, as well as input and interstage

matching circuits. Output match into a 50-ohm load is

realized off-chip within the module package to

optimize efficiency and power performance.

The SKY68040-11 PAM is manufactured with Skyworks

InGaP GaAs Heterojunction Bipolar Transistor (HBT)

process which provides for all positive voltage DC

supply operation while maintaining high efficiency and

good linearity. No VREF voltage is required. Power

down is accomplished by setting the voltage on VENHB

and VENLB to zero volts. No external supply side

switch is needed as typical “off” leakage is a few

microamperes with full primary voltage supplied from

the battery.

The SKY68040-11 functional block diagram is shown in

Figure 1.