SRW150 TEMEX

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Technical content

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -)

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -) January 8th, 2007 TEMEX reserves the right to modify herein specifications and informations at any time when necessary to provide optimum performance and cost. S A W P r o d u c t s

Features

Ultra Low Noise (ULN), Oven Controlled, Voltage Controlled, SAW Oscillator (OCVCSO) Nominal Frequency: 500 MHz Ultra low phase noise: - 167 dBc/Hz @ 10 kHz offset (Typical) - 178 dBc/Hz noise floor (Typical) Frequency fine tuning by temperature control of the oven Operating temperature range : [0 – 50 °C] Laboratory environment (stabilized platforms) Applications : o Instrumentation: phase noise analyzer, synthesizer o Ground based military equipment & test bench o Radar & Telecom simulator 9-pin Plug-in package + SMA connector for the frequency output Environmental conditions Parameters Unit Minimum Typical Maximum Operating temperature range °C 0 + 50 Storage temperature range °C - 40 + 75 Typical phase noise

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -) January 8th, 2007 TEMEX reserves the right to modify herein specifications and informations at any time when necessary to provide optimum performance and cost. S A W P r o d u c t s Mechanical characteristics Package:

  • 9-pin plug-in module
  • SMA connector on a side. Foot-print (without SMA connector):
  • 51.5 x 51.5 mm max. Height (H Max):
  • 20.5 mm max. Pin description Pin number Name Function

1 Ground, case Electrical & mechanical ground

2 Supply voltage Oscillator power supply

3 NC Factory frequency setting (C1)

4 NC Factory frequency setting (C2)

5 NC -

6 Voltage control Voltage control for electrical tuning

7 return Return / Voltage control

8 Heating supply voltage Oven power supply

9 return Return / Heating supply voltage

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -) January 8th, 2007 TEMEX reserves the right to modify herein specifications and informations at any time when necessary to provide optimum performance and cost. S A W P r o d u c t s Technical Characteristics Block diagram Frequency Output Voltage Control Heating supply voltage SR W150 Factory frequency setting Supply voltage Ground case Return Vc 0/Vc Oven PS BPFPhase shifter SAW Res. Electrical specifications Electrical Parameters Unit Minimum Typical Maximum Frequency output (SMA Connector) Nominal frequency MHz 500 Output level (50 WWWW load) dBm 10 11 12 Harmonics suppression dBc 30 Phase noise @ 1 kHz offset dBc/Hz - 141 - 136 Phase noise @ 10 kHz offset dBc/Hz - 167 - 164 Phase noise @ 100 kHz offset dBc/Hz - 178 - 175 Phase noise floor dBc/Hz - 178 - 175 VSWR - 2:1 Free running mode (Voltage Control pin NC) Factory set accuracy @ 25 °C ppm ±±±± 0.1 ±±±± 1 Temperature stability ppm ±±±± 1 Aging per year ppm ±±±± 1 Electrical tuning (Voltage Control pin) Relative tuning range ppm ±±±± 2 Voltage range VDC 3 4.7 6 Slope @ V control = 4.7 V Hz / V 750 1000 1500 Supply voltage pin Voltage range VDC 11.8 12 12.2 Supply current mA 70 100 Heating supply voltage pin Voltage range VDC 11 12 Supply current mA 500 Warm up time mn 5

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -) January 8th, 2007 TEMEX reserves the right to modify herein specifications and informations at any time when necessary to provide optimum performance and cost. S A W P r o d u c t s Typical application 1: SR W150 phase locked on low frequency ULN XO Crystal oscillators (XOs) are the state-of-the-art of ultra low noise frequency sources below 150 MHz. For higher frequency applications, frequency multiplication of XOs remains the best solution for close to the carrier noise. On the other hand, this is not true for the noise floor which has been degraded by the multiplication factor. High frequency fundamental mode oscillators may achieve a better noise floor. This is the case for ULN SAW oscillators. In frequency range 300 to 700 MHz, the best phase noise is obtained by “ filtering” the noise floor of a multiplied XO by a PLL build around an ULN VCSO with a loop bandwidth of about one kHz, as shown hereafter on two typical examples. Block diagram H(p)x NXO SR W1xx PLL Frequency Output Benefits 1. Frequency stability :

  • the output frequency is the frequency of the XO multiplied by N
  • the long term relative performances are those of the XO 2. Phase noise improvement :
  • Within the PLL bandwidth, the phase noise is the phase noise of the XO + 20 logN
  • Out of the PLL bandwidth, the phase noise is the phase noise of the ULN VCSO Typical example: SR W150 phase locked on a XO @ 100 MHz multiplied by 5 -180 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 Frequency offset (Hz) Phase noise (dBc/Hz) XO 100 MHz XO x 5 SR W150 Free running SR W150 Phase locked Phase noise tracking within PLL bandwidth Phase noise suppression

Ultra Low Noise 500 MHz SAW Oscillators Preliminary specification (Rev -) January 8th, 2007 TEMEX reserves the right to modify herein specifications and informations at any time when necessary to provide optimum performance and cost. S A W P r o d u c t s Typical application 2: SR W150 phase locked on 100 MHz ULN VCXO itself phase locked on 10 MHz ULN XO Block diagram H'(p)x 5 SR W150

500 MHz

H(p)x 10 VCXO

100 MHz

10 MHz

Simulated phase noise: -180 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 Frequency offset (Hz) Phase noise (dBc/Hz) XO 10 MHz x 50 XO 100 MHz x 5 SR W150 Free running SR W150 Phase locked VCXO SR W150 Phase noise contribution XO 10 MHz Phase noise contribution