ADF4157:  High Resolution 6 GHz Fractional-N Frequency Synthesizer

The ADF4157 is a 6 GHz fractional-N frequency synthesizer with a 25-bit fixed modulus, allowing subhertz frequency resolution at 6 GHz. It consists of a low noise digital phase frequency detector ...More

ADF4157:  High Resolution 6 GHz Fractional-N Frequency Synthesizer

Product Description

The ADF4157 is a 6 GHz fractional-N frequency synthesizer with a 25-bit fixed modulus, allowing subhertz frequency resolution at 6 GHz. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a Σ-Δ based fractional interpolator to allow programmable fractional-N division. The INT and FRAC values define an overall N divider, N = INT + (FRAC/225). The ADF4157 features cycle slip reduction circuitry, which leads 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

  • Satellite communications terminals, radar equipment
  • Instrumentation equipment
  • Personal mobile radio (PMR)
  • Base stations for mobile radio
  • Wireless handsets

    • Features

    • RF bandwidth to 6 GHz
    • 25-bit fixed modulus allows subhertz frequency resolution
    • 2.7 V to 3.3 V power supply
    • Separate VP allows extended tuning voltage
    • Programmable charge pump currents
    • 3-wire serial interface
    • Digital lock detect
    • Power-down mode
    • Pin compatible with the following frequency synthesizers:
      ADF4110/ADF4111/ADF4112/ADF4113/
      ADF4106/ADF4153/ADF4154/ADF4156
    • Cycle slip reduction for faster lock times

    Diagrams

    ADF4157 Diagram
    Functional Block Diagram for ADF4157

    Specifications

    Type Single Fractional-N
    Max RF Input (MHz) 6000MHz
    Norm Phase Noise (dBc/Hz) 207dBc
    Max REFin (MHz) 300MHz
    Supply Current 29mA
    Package 16-Lead TSSOP,20-Lead CSP

    Explore Other Products

    Part# Type Max RF Input (MHz) Output Frequency Range Norm Phase Noise (dBc/Hz) Max REFin (MHz) RF Prescalers Supply Current Package Price* (1000-4999)
    AD809 Synthesizer - 155.52 MHz -219 19.44 - 17 16-Lead SOIC $3.85
    ADF4001 Single Integer-N 200 - -214 104 n/a 4.5 16-Lead TSSOP, 20-Lead CSP $1.72
    ADF4002 Single Integer-N 400 - -222 300 n/a 5 16-Lead TSSOP, 20-Lead CSP $1.97
    ADF4007 Single Integer-N 7500 - -219 240 N counter = 8/16/32/64 13 20-Lead CSP $2.16
    ADF4106 Single Integer-N 6000 - -219 300 16/17, 32/33, 64/65, 8/9 13 16-Lead TSSOP, 20-Lead CSP $2.16
    ADF4107 Single Integer-N 7000 - -219 250 16/17, 32/33, 64/65, 8/9 13 16-Lead TSSOP, 20-Lead CSP $2.67
    ADF4108 Single Integer-N 8000 - -219 250 16/17, 32/33, 4/5, 64/65, 8/9 15 20-Lead CSP $3.34
    ADF4110 Single Integer-N 550 - -215 104 16/17, 32/33, 64/65, 8/9 4.5 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4111 Single Integer-N 1200 - -215 104 16/17, 32/33, 64/65, 8/9 4.5 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4112 Single Integer-N 3000 - -215 104 16/17, 32/33, 64/65, 8/9 6.5 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4113 Single Integer-N 4000 - -215 104 16/17, 32/33, 64/65, 8/9 8.5 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4113HV Single Integer-N 4000 - -212 104 16/17, 32/33, 64/65, 8/9 11 16-Lead TSSOP, 20-Lead CSP $2.49
    ADF4116 Single Integer-N 550 - -211 100 8/9 4.5 16-Lead TSSOP $2.28
    ADF4117 Single Integer-N 1200 - -213 100 32/33 4.5 16-Lead TSSOP $2.28
    ADF4118 Single Integer-N 3000 - -216 100 32/33 6.5 16-Lead TSSOP $2.28
    ADF4150 Frac-N/Int-N 6 - 219 250 4/5, 8/9 25 24-Lead CSP -
    ADF4153 Single Fractional-N 4000 - -213 250 4/5, 8/9 12 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4154 Single Fractional-N 4000 - -213 250 4/5, 8/9 12 16-Lead TSSOP, 20-Lead CSP $2.28
    ADF4156 Single Fractional-N 6000 - -213 250 4/5, 8/9 12 16-Lead TSSOP, 20-Lead CSP $3.04
    ADF4157 Single Fractional-N 6000 - 207 300 - 29 16-Lead TSSOP, 20-Lead CSP $3.25
    ADF4193 Fast Settling PLL 3500 - -216 300 4/5, 8/9 68 32-Lead CSP $8.60
    ADF4206 Dual Integer-N 550 - 92 40 32/33, 64/65 9.5 16-Lead TSSOP $2.04
    ADF4208 Dual Integer-N 2000 - 91 40 32/33, 64/65 14 20-Lead TSSOP $2.04
    ADF4212 Dual Integer-N 2700 - 91 115 16/17, 32/33, 64/65, 8/9 11.5 20-Lead CSP, 20-Lead TSSOP $2.45
    ADF4212L Dual Integer-N 2400 - -215 115 16/17, 32/33, 64/65, 8/9 6 20-Lead CSP, 20-Lead TSSOP $2.45
    ADF4213 - 3000 - 91 115 16/17, 32/33, 8/9 20 - $1.79
    ADF4216 - 1200 - 87 40 32/33, 64/65 18 - $1.94
    ADF4217L Dual Integer-N 3000 - 90 110 32/33, 64/65 7 20-Lead TSSOP, 24-Lead BCC -
    ADF4218L Dual Integer-N 3000 - -216 110 32/33, 64/65 7 20-Lead TSSOP, 24-Lead BCC $2.54
    ADF4219L Dual Integer-N 3000 - 90 110 32/33, 64/65 7 20-Lead TSSOP, 24-Lead BCC -
    ADF4251 Dual Fractional-N 3000 - 103 150 4/5, 8/9 13 24-Lead CSP -
    ADF4252 Dual Fractional-N 3000 - -214 150 4/5, 8/9 13 24-Lead CSP $2.67
    ADF4350 Frac-N/Int-N w/ VCO - 137.5-4400 MHz 213 105 4/5, 8/9 27 32-Lead CSP $10.30
    ADF4360-0 Synthesizer/VCO Integer-N - 2400-2725 MHz -214 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-1 Synthesizer/VCO Integer-N - 2050-2450 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-2 Synthesizer/VCO Integer-N - 1850-2150 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-3 Synthesizer/VCO Integer-N - 1600-1950 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-4 Synthesizer/VCO Integer-N - 1450-1750 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-5 Synthesizer/VCO Integer-N - 1200-1400 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-6 Synthesizer/VCO Integer-N - 1050-1250 MHz -217 250 16/17, 32/33, 8/9 - 24-Lead CSP $3.10
    ADF4360-7 Synthesizer/VCO Integer-N - 350-1800 MHz -217 250 16/17, 8/9 - 24-Lead CSP $3.10
    ADF4360-8 Synthesizer/VCO Integer-N - 65-400 MHz -217 250 - - 24-Lead CSP $3.10
    ADF4360-9 Synthesizer/VCO Integer-N - 1.1-200 MHz 218 250 - 7.5 - $3.06

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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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