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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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THS4521 датащи(PDF) 24 Page - Texas Instruments |
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THS4521 датащи(HTML) 24 Page - Texas Instruments |
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24 / 48 page  THS452x 24.9 W 953 W 1kW 1kW 1kW 1kW 52.3 W 24.9 W V OCM V IN+ PD Measurewith Differential Probe Calibrated Differential Probe Open Open From Network Analyzer V S+ V S- 0.22 F m 0.22 F m THS452x 1kW 1kW V OCM PD Open Open Open Measurement PointforBandwidth Measurement PointforZ IN Calibrated Differential Probe Across 49.9 Resistor W R CM From Network Analyzer 1kW 1kW 49.9 W 49.9 W 49.9 W 499 W 499 W V S+ 0.22 F m V S THS452x 24.9 W 953 W 1kW 1kW 1kW 1kW 52.3 W 52.3 W 24.9 W V OCM PD Measurewith Differential Probe AcrossR OT Open Open Open Open Network Analyzer Power Supply CalibratedDifferential Probe Across V S+ andGND V S+ V S- 0.22 F m 0.22 F m THS452x 499 W 1kW 1kW 1kW 1kW 52.3 W 52.3 W 499 W V OCM PD Open Open Open 49.9 W 49.9 W Step Input ToOscilloscope 50- Input W V S+ V S- 0.22 F m THS4521 THS4522 THS4524 SBOS458D – DECEMBER 2008 – REVISED AUGUST 2010 www.ti.com Common-Mode and Power-Supply Rejection VOCM Input The circuit shown in Figure 56 is used to measure the The circuit illustrated in Figure 58 is used to measure CMRR. The signal from the network analyzer is the frequency response and input impedance of the applied common-mode to the input. Figure 57 is used VOCM input. Frequency response is measured using a to measure the PSRR of VS+ and VS–. The power Tektronix high-impedance differential probe, with supply under test is applied to the network analyzer RCM = 0 Ω at the common point of VOUT+ and VOUT–, dc offset input. For both CMRR and PSRR, the output formed at the summing junction of the two matched is probed using a Tektronix high-impedance 499- Ω resistors, with respect to ground. The input differential probe across the 953- Ω resistor and impedance is measured using a Tektronix referred to the amplifier output by adding back the high-impedance differential probe at the VOCM input 0.42-dB as a result of the voltage divider on the with RCM = 10 kΩ and the drop across the 10-kΩ output. For these tests, the resistors are matched for resistor is used to calculate the impedance seen best results. looking into the amplifier VOCM input. The circuit shown in Figure 59 measures the transient response and slew rate of the VOCM input. A 1-V step input is applied to the VOCM input and the output is measured using a 50- Ω oscilloscope input referenced back to the amplifier output. Figure 56. CMRR Test Circuit Figure 58. VOCM Input Test Circuit Figure 57. PSRR Test Circuit Figure 59. VOCM Transient Response and Slew Rate Test Circuit space 24 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): THS4521 THS4522 THS4524 |
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