HP 5968-1947E free download

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Agilent 8 Hints for Successful Impedance Measurements Application Note 346-4 Characterizing Electronic Components to Achieve Designed Circuit Performance SYS MENU MEAS FUNC : Z- RANGE : AUTO DISP FREQ : 100.000 kHz BIAS : 0.000 V LEVEL : 1.00 V INTEG : LONG BIN No. Z : 150.000 BIN : -90.000 deg COUNT LIST SWEEP Vm : 50.00mV Im : 10.74mA CORR: OPEN, SHORT Contents Impedance HINT 1. Impedance Parameters Measurements for Engineers HINT 2. Measurements Depend Impedance is measured using a vari- The techniques employed by these on Test Conditions ety of techniques. A particular tech- instruments are independent of ana- nique is selected according to the lyzer type, and can be RF-IV, IV or HINT 3. Choose Appropriate test frequency, the impedance Auto-Balancing Bridge (depending Instrument Display parameter to be measured and the on frequency). Parameter preferred display parameters. Engineers perform impedance meas- HINT 4. A Measurement The Auto-Balancing Bridge urements for a variety of reasons. In Technique has technique is exceptionally accurate a typical application, an electronic Limitations over a broad impedance range (m component used in a new circuit to the order of 100 M). The fre- design is characterized. Normally, HINT 5. Perform Calibration quency range this technique can component manufacturers state only be applied to is from a few Hz to nominal impedance values. 110 MHz. HINT 6. Perform Compensation Design decisions, as well as deci- The IV and RF-IV techniques are sions affecting the production of the HINT 7. Understanding Phase also very accurate over a broad assembled product, depend to some Shift and Port Extension impedance range (m to M). degree on the impedance values Effects These techniques can be applied attributed to the product's compo- from 40 Hz to 3 GHz. nents. The performance and