ADF4156

PRODUCTION

6.2 GHz Fractional-N Frequency Synthesizer

Data Sheet (Rev. E) Product Selection Table
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Overview

  • RF bandwidth to 6.2 GHz
  • 2.7 V to 3.3 V power supply
  • Separate VP allows extended tuning voltage
  • Programmable fractional modulus
  • Programmable charge pump currents
  • 3-wire serial interface
  • Digital lock detect
  • Power-down mode
  • Pin compatible with the ADF4110, ADF4111, ADF4112, ADF4113, ADF4106, ADF4153, and ADF4154 frequency synthesizers
  • Programmable RF output phase
  • Loop filter design possible with ADIsimPLL
  • Cycle slip reduction for faster lock times

The ADF4156 is a 6.2 GHz fractional-N frequency synthesizer that implements local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a ∑­∆ based fractional interpolator to allow programmable fractional-N division. The INT, FRAC, and MOD registers define an overall N divider (N = (INT + (FRAC/MOD))). The RF output phase is programmable for applications that require a particular phase relationship between the output and the reference. The ADF4156 also features cycle slip reduction circuitry, leading to faster lock times without the need for modifications to the loop filter.

Control of all on-chip registers is via a simple 3-wire interface. The device operates with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use.

Applications

  • CATV equipment
  • Base stations for mobile radio (WiMAX, GSM, PCS, DCS, SuperCell 3G, CDMA, WCDMA)
  • Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
  • Wireless LANs, PMR
  • Communications test equipment

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    ADF4156
    6.2 GHz Fractional-N Frequency Synthesizer
    ADF4156 Functional Block Diagram ADF4156 Pin Configuration
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    Documentation

    Data Sheet 1

    User Guide 3

    Application Note 1

    Frequently Asked Question 1

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    Software Resources

    Device Drivers 1

    Hardware Ecosystem

    Parts Product Life Cycle Description
    Frequency Dividers & Multipliers 1
    ADF5001
    		PRODUCTION 4 GHz TO 18 GHz Divide-by-4 Prescaler
    LDO Linear Regulators 3
    ADP150
    		PRODUCTION Ultralow Noise, 150 mA CMOS Linear Regulator
    ADP151
    		PRODUCTION Ultralow Noise, 200 mA, CMOS Linear Regulator
    ADP3334
    		NOT RECOMMENDED FOR NEW DESIGNS High Accuracy Low IQ, 500 mA anyCAP­® Adjustable Low Dropout Regulator
    Operational Amplifiers (Op Amps) 1
    OP184
    		PRODUCTION Single-Supply Rail-to-Rail Input/Output Operational Amplifier
    Switching Regulators & Controllers 1
    ADP1613
    		PRODUCTION 650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 2.0 A Current Limit
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    Tools & Simulations

    ADIsimRF

    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.

    Open Tool

    ADIsimPLL™

    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.

    Open Tool

    Evaluation Kits

    eval board
    schematic 1
    schematic 2
    schematic 3
    EVAL-ADF4156

    ADF4156 Evaluation Board

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    Product Details

    This page contains ordering information for the evaluation board used to evaluate the ADF4156 6.2 GHz Fractional-N Frequency Synthesizer.


    This evaluation board requires an SDP Controller board for connection to the PC. The SDP controller board connects to the PC via USB 2.0. The evaluation board will connect to the SDP controller board. The evaluation board cannot be connected directly to the PC. The evaluation software running on the PC will communicate through the SDP Controller board, to the evaluation board. The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CS1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.
    EVAL-ADF4156
    ADF4156 Evaluation Board
    ADF4002 Evaluation Board ADF4002 Evaluation Board - Top View ADF4002 Evaluation Board - Bottom View

    Reference Designs

    Low Noise Microwave Fractional-N PLL
    Low Noise Microwave Fractional-N PLL
    CN0174 Circuits from the lab

    Low Noise, 12 GHz, Microwave Fractional-N Phase-Locked Loop (PLL) Using an Active Loop Filter and RF Prescaler

    View Detailed Reference Design

    Features and Benefits

    • Fractional-N PLL up to 18GHz
    • Low system phase noise of 0.35 ps rms @ 12GHz
    CN0174
    Low Noise, 12 GHz, Microwave Fractional-N Phase-Locked Loop (PLL) Using an Active Loop Filter and RF Prescaler
    Low Noise Microwave Fractional-N PLL

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