1700-2000 MHz Diversity Downconversion Mixer with Integrated Integer-N PLL and VCO

Skyworks SKY73212-11 is a fully integrated diversity downconverter that includes a high linearity mixer, large dynamic range Intermediate Frequency (IF) amplifier, and a complete Voltage Controlled Oscillator (VCO), synthesizer, and Local Oscillator (LO) chain. Low loss RF baluns have also been included to reduce design complications and to lower system cost.

The SKY73212-11 features a 3rd Order Input Intercept Point (IIP3) of +24 dBm and a Noise Figure (NF) of 11 dB, which make the device an ideal solution for high dynamic range systems such as 2G/3G base station receivers.

The SKY73212-11 also includes a fully integrated wideband VCO/Integer-N frequency synthesizer. By applying internal VCO division, the output LO frequency can be set to the desired value while minimizing the phase noise.

The SKY73212-11 is controlled by a Serial Peripheral Interface (SPI) and is manufactured using a robust silicon BiCMOS process. The device has been designed for optimum long-term reliability. It is manufactured in a compact, 44-pin 10 x 6 mm Multi-Chip Module (MCM).

Please note: SKY73212-11 is being discontinued and is not recommended for new designs.


  • RF frequency range: 1700 to 2000 MHz
  • IF frequency range: 40 to 300 MHz
  • Conversion gain: 9 dB
  • IIP3: +24 dBm; OIP3: +33 dBm
  • Noise Figure: 11 dB
  • Integrated RF balun
  • High linearity IF amplifier
  • Integer-N frequency synthesizer
  • Low phase-noise VCO
  • Low RF output comparison spurs
  • Programmable 18-bit N-counter and 11-bit R-counter
  • Wide range of reference frequencies
  • Programmable charge pump currents
  • Flexible configuration that allows connection to an external VCO or PLL
  • Digital lock detector
  • Optional adjustment of the core, divider, and charge pump currents by external resistor
  • Power supply for mixer: 5 V; power supply for synthesizer: 3.3 V
  • Small, low-cost MCM (44-pin, 10 x 6 mm) SMT package (MSL3, 260 °C per JEDEC J-STD-020)
Data Sheets SKY73212-11: 1700-2000 MHz Diversity Downconversion Mixer with Integrated Integer-N PLL and VCO SKY73212_11_201390E.pdf (1206 KB)
Designer Info Programming Guide: Skyworks Wideband Integer-N, Phase-Locked Loop Skyworks_Wideband_Integer_N_Phase_Locked_Loop_201322D.pdf (289 KB)
ProductName : SKY73212-11
Operating Frequency (MHz) : 1700-2000
IF Frequency (MHz) : 40-300
Architecture : Diversity
Power Down : Yes
Modulator/ Up Converter : No
Demodulator/ Down Converter : Yes
Built-In LO Drivers : Yes
Built-In PLL/VCO : Integer-N
Conversion Gain : 9
IIP3 (dBm) : 24
NF (dB) : 11
VCC (V) : 5
Package : MCM, 44-pin
Package (mm) : 10 x 6 x 1.05
Product Information:
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