ADF4156:  6 GHz Fractional-N Frequency Synthesizer

The ADF4156 is a 6 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 ...More

ADF4156:  6 GHz Fractional-N Frequency Synthesizer

Product Description

The ADF4156 is a 6 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 RF Output Phase is programmable for applications which require a particular phase relationship between the output and the reference. The ADF4156 also features cycle slip reduction circuitry which leads to faster lock times, without the need for modifications for 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.

Features

  • RF bandwidth to 6 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

Diagrams

ADF4156 Diagram
Functional Block Diagram for ADF4156

Specifications

Type Single Fractional-N
Max RF Input (MHz) 6000MHz
Norm Phase Noise (dBc/Hz) -213dBc
Max REFin (MHz) 250MHz
RF Prescalers 4/5,8/9
Supply Current (max) 12mA
Package 16-Lead TSSOP,20-Lead CSP

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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 17 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
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