ADF4208:  Dual, Integer-N 1.1 GHz/2.0 GHz PLL

The ADF4206/ADF4208 is a dual frequency synthesizer which can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. They ...More

ADF4208:  Dual, Integer-N 1.1 GHz/2.0 GHz PLL

Product Description

The ADF4206/ADF4208 is a dual frequency synthesizer which can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. They consist of a low-noise digital PFD (Phase Frequency Detector), a precision charge pump, a programmable reference divider, programmable A and B counters and a dual-modulus prescaler (P/P+1). The A (6-bit) and B (11- bit) counters, in conjunction with the dual modulus prescaler (P/P+1), implement an N divider (N= BP+A). In addition, the 14-bit reference counter (R Counter), allows selectable REFIN frequencies at the PFD input. A complete PLL (Phase-Locked Loop) can be implemented if the synthesizers are used with an external loop filter and VCO's (Voltage Controlled Oscillators).

Note: The ADF4207 mentioned in the data sheet is an obsolete part.

Features

  • ADF4206: 550 MHz/550 MHz
  • ADF4208: 2.0 GHz/1.1 GHz
  • 2.7 V to 5.5 V Power Supply
  • Selectable Charge Pump Supply (VP) Allows Extended Tuning Voltage in 3 V Systems
  • Selectable Charge Pump Currents
  • On-Chip Oscillator Circuit
  • Selectable Dual Modulus Prescaler
    RF2: 32/33 or 64/65
    RF1: 32/33 or 64/65
  • 3-Wire Serial Interface
  • Power-Down Mode

Diagrams

ADF4208 Diagram
Functional Block Diagram for ADF4208

Specifications

Type Dual Integer-N
Max RF Input (MHz) 2000MHz
Norm Phase Noise (dBc/Hz) 91dBc
Max REFin (MHz) 40MHz
RF Prescalers 32/33,64/65
Supply Current (max) 14mA
Package 20-Lead TSSOP

Explore Other Products

Part# Type Max RF Input (MHz) Output Frequency Range Norm Phase Noise (dBc/Hz) Max REFin (MHz) RF Prescalers Supply Current (max) 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 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