Features and Benefits

  • Rx mixer with integrated fractional-N PLL
  • RF input frequency range: 1100 MHz to 3200 MHz
  • Internal LO frequency range:
    2100 MHz to 2600 MHz
  • Input P1dB: 14.8 dBm
  • Input IP3: 28.5 dBm
  • IIP3 optimization via external pin
  • SSB noise figure
    IP3SET pin open: 14.3 dB
    IP3SET pin at 3.3 V: 15.6 dB
  • Voltage conversion gain: 6.7 dB
  • Matched 200 Ω IF output impedance
  • IF 3 dB bandwidth: 500 MHz
  • Programmable via 3-wire SPI interface
  • 40-lead, 6 mm × 6 mm LFCSP

Product Details

The ADRF6603 is a high dynamic range active mixer with integrated phase-locked loop (PLL) and voltage controlled oscillator (VCO). The PLL/synthesizer uses a fractional-N PLL to generate a fLO input to the mixer. The reference input can be divided or multiplied and then applied to the PLL phase frequency detector (PFD).

The PLL can support input reference frequencies from 12 MHz to 160 MHz. The PFD output controls a charge pump whose output drives an off-chip loop filter.

The loop filter output is then applied to an integrated VCO. The VCO output at 2 × fLO is applied to an LO divider, as well as to a programmable PLL divider. The programmable PLL divider is controlled by a sigma-delta (Σ-Δ) modulator (SDM). The modulus of the SDM can be programmed from 1 to 2047.

The active mixer converts the single-ended 50 Ω RF input to a 200 Ω differential IF output. The IF output can operate up to 500 MHz.

The ADRF6603 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, RoHS-compliant, 6 mm × 6 mm LFCSP with an exposed paddle. Performance is specified over the −40°C to +85°C temperature range.


  • Cellular base stations

Product Lifecycle icon-not-recommended Last Time Buy

All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.

Evaluation Kits (1)

Software & Systems Requirements

Tools & Simulations

Design Tools


ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.


ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.

Product Recommendations

ADRF6603 Companion Parts

Recommended RF/IF Differential Amplifiers

  • For a differential input/output IF VGA: AD8370, AD8375, ADL5336.
  • For ultralow distortion and adjustable gain with external resistor: AD8352.
  • For ultralow distortion, pin strappable gain adjust: ADL5561.
  • For adjustable gain with external resistor: AD8351.