STW82103B:RF down converter with embedded integer-N synthesizer

The STMicroelectronics STW82103B is an integrated down converter providing 8 dB of gain, 10.5 dB NF, and a very high input linearity by means of its passive mixer.

Embedding two wide band auto calibrating VCOs and an integer-N synthesizer, the STW82103B is suitable for both Rx and Tx requirements for Cellular infrastructure equipment.

The integrated RF balun and internal matching permit direct 50 ohm single-ended interface to RF port. The IF output is suitable for driving 200-ohm impedance filters.

By embedding a DAC with dual current output to drive an external PIN diode attenuator, the STW82103B replaces several costly discrete components and offers a significant footprint reduction.

The STW82103B device is designed with STMicroelectronics advanced 0.35 μm SiGe process. Its performance is specified over a -40 °C to +85 °C temperature range.

Key Features

  • High linearity:
    • IIP3: +25 dBm
    • 2FRF-2FLO spurious rejection: 80 dBc
  • Noise figure:
    • NF: 10.5 dB
  • Conversion gain
    • CG: 8 dB
  • RF range: 2300 MHz to 2700 MHz
  • Wide IF amplifier frequency range: 70 MHz to 400 MHz
  • Integrated RF balun with internal matching
  • Dual differential integrated VCOs with automatic center frequency calibration:
    • LOA: 2200 to 2550 MHz
    • LOB: 2500 to 3000 MHz
  • Embedded integer-N synthesizer
    • Dual modulus programmable prescaler (16/17 or 19/20)
    • Programmable reference frequency divider (10 bits)
    • Adjustable charge pump current
    • Digital lock detector
    • Excellent integrated phase noise
    • Fast lock time: 150 μs
  • Integrated DAC with dual current output
  • Supply: 3.3 V and 5 V analog, 3.3 V digital
  • Dual digital bus interface: SPI and I2 C bus (fast mode) with 3 bit programmable address (1101A2 A1 A0 )
  • Process: 0.35 μm BICMOS SiGe
  • Operating temperature range -40 to +85o C
  • 44-lead exposed pad VFQFPN package 7x7x1.0 mm
  • Applications
    • Cellular infrastructure equipment:
      • IF sampling receivers
      • Digital PA linearization loops
    • Other wireless communication systems.
Product Specifications
DescriptionVersionSize
DS7128: RF down converter with embedded integer-N synthesizer2.1763 KB
Flyers
DescriptionVersionSize
Integrated RF down-converters1.01 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STW82103BVFQFPN2 44 7x7x1.0Tray--NECEAR99PHILIPPINES
STW82103BTRVFQFPN2 44 7x7x1.0Tape And Reel--NECEAR99PHILIPPINES
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STW82103BVFQFPN2 44 7x7x1.0IndustrialEcopack2
STW82103BTRVFQFPN2 44 7x7x1.0IndustrialEcopack2
RF down converter with embedded integer-N synthesizer STW82103B
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