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LTC55933

7

Figure 2. Proper Equipment Setup for RF Performance Measurements

Figure 3. Proper Equipment Setup for Noise Figure Measurement

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Summary of Contents for DC 1710A-D

Page 1: ...for power savings and each of the mixer channels has independent shutdown control The LTC5593 s high conversion gain and high dy namic range enable the use of lossy IF filters in high selective receiver designs while minimizing the total solution cost board space and system level variation High Dynamic Range Dual Downconverting Mixer Family DEMO IC PART RF RANGE LO RANGE DC1710A A LTC5590 600MHz 1...

Page 2: ...ins should never fall below 0 3V or exceed the power supply voltage by more than 0 3V The En able pins must be pulled high or low If left floating the on off state of the IC will be indeterminate A logic table for the Enable control ENA ENB is shown in Table 1 TABLE 1 ENABLE CONTROL LOGIC TABLE ENA ENB MIXER CHANNEL STATE Low Disabled High Enabled LOW CURRENT MODE The LTC5593 features a low curren...

Page 3: ...ower range is between 4dBm and 6dBm IF OUTPUT Demonstration Circuit 1710A D features single ended 50Ω matched IF outputs for 190MHz The channel A and the channel B IF outputs are identi cal and the impedance matching is realized with a bandpass topology using IF Demonstration Circuit 1710A D can be easily re configured for other IF frequencies by simply re placing inductors L1A L2A L1B and L2B Ind...

Page 4: ...nsitivity and to increase dynamic range However the trade off is increased sweep time 7 Spectrum analyzers can produce significant internal distortion products if they are over driven Generally spectrum analyzers are de signed to operate at their best with about 30dBm at their input filter or preselector Suffi cient spectrum analyzer input attenuation should be used to avoid saturating the instru ...

Page 5: ...utput ports 6 Set the test signal to 0dBm and re calibrate the Network Analyzer 7 Terminate all unused demo board ports in 50Ω Measure return losses of the LO input port RF PERFORMANCE MEASUREMENTS 1 Connect all test equipment as shown in Figure 6 with the signal generators and the DC power supply turned off 2 Increase the DC power supply voltage to 3 3V and verify that the total current consumpti...

Page 6: ...NOISE FIGURE MEASUREMENT 1 Configure and calibrate the noise figure meter for mixer measurements 2 Connect all test equipment as shown in Figure 7 with the signal generator and the DC power supply turned off 3 Increase the DC power supply voltage to 3 3V and verify that the total current consumption is close to the figure listed in the Typical Demon stration Circuit Performance Summary The supply ...

Page 7: ...LTC55933 7 Figure 2 Proper Equipment Setup for RF Performance Measurements Figure 3 Proper Equipment Setup for Noise Figure Measurement ...

Page 8: ...LTC55933 8 Figure 4 Demonstration Circuit schematic ...

Page 9: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1710A D ...

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