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OPA202 Scheda tecnica(PDF) 26 Page - Texas Instruments |
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OPA202 Scheda tecnica(HTML) 26 Page - Texas Instruments |
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26 / 49 page  + ± Low-Pass Filter 50 Digital Multimeter Ambient temperature: 25Û& Sample / Averaging +VS -VS Not shown: 0.1 µF and 10 µF supply decoupling RF source DC Bias: 0 V Modulation: None (CW) Frequency Sweep: 201 pt. Log 26 OPA202, OPA2202, OPA4202 SBOS812G – OCTOBER 2017 – REVISED MARCH 2020 www.ti.com Product Folder Links: OPA202 OPA2202 OPA4202 Submit Documentation Feedback Copyright © 2017–2020, Texas Instruments Incorporated Table 3 lists the EMIRR IN+ values for the OPAx202 at particular frequencies commonly encountered in real- world applications. Table 3 lists applications that may be centered on or operated near the particular frequency shown. This information may be of special interest to designers working with these types of applications, or working in other fields likely to encounter RF interference from broad sources, such as the industrial, scientific, and medical (ISM) radio band. Table 3. OPAx202 EMIRR IN+ for Frequencies of Interest FREQUENCY APPLICATION OR ALLOCATION EMIRR IN+ 400 MHz Mobile radio, mobile satellite, space operation, weather, radar, ultra-high frequency (UHF) applications 41 dB 900 MHz Global system for mobile communications (GSM) applications, radio communication, navigation, GPS (to 1.6 GHz), GSM, aeronautical mobile, UHF applications 47 dB 1.8 GHz GSM applications, mobile personal communications, broadband, satellite, L-band (1 GHz to 2 GHz) 54 dB 2.4 GHz 802.11b, 802.11g, 802.11n, Bluetooth®, mobile personal communications, industrial, scientific and medical (ISM) radio band, amateur radio and satellite, S-band (2 GHz to 4 GHz) 67 dB 3.6 GHz Radiolocation, aero communication and navigation, satellite, mobile, S-band 67 dB 5 GHz 802.11a, 802.11n, aero communication and navigation, mobile communication, space and satellite operation, C-band (4 GHz to 8 GHz) 81 dB 7.3.8 EMIRR +IN Test Configuration Figure 45 shows the circuit configuration for testing the EMIRR IN+. An RF source is connected to the op amp noninverting input pin using a transmission line. The op amp is configured in a unity-gain buffer topology with the output connected to a low-pass filter (LPF) and a digital multimeter (DMM). A large impedance mismatch at the op amp input causes a voltage reflection; however, this effect is characterized and accounted for when determining the EMIRR IN+. The resulting DC offset voltage is sampled and measured by the multimeter. The LPF isolates the multimeter from residual RF signals that may interfere with multimeter accuracy. Figure 45. EMIRR +IN Test Configuration 7.4 Device Functional Modes The OPAx202 have a single functional mode and are operational when the power-supply voltage is greater than 4.5 V (±2.25 V). The maximum power supply voltage for the OPAx202 is 36 V (±18 V). |
Codice articolo simile - OPA202_V05 |
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Descrizione simile - OPA202_V05 |
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