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ADL5904ACPZN-R7 数据表(PDF) 25 Page - Analog Devices |
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ADL5904ACPZN-R7 数据表(HTML) 25 Page - Analog Devices |
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25 / 27 page ![]() Data Sheet ADL5904 Rev. B | Page 25 of 27 APPLICATIONS INFORMATION EVALUATION BOARD SCHEMATIC AND CONFIGURATION OPTIONS The ADL5904-EVALZ is a fully populated, 4-layer, FR4- based evaluation board. Apply a power supply of 3.3 V to the VPOS and GND test loops. To exercise the RMS detector portion of the circuit, apply the RF signal to be measured to the RFIN SMA connector. The corresponding rms output voltage is then available on the VRMS SMA connector and on the TP1 test point. To operate the threshold detection circuitry, apply the RF signal that is being monitored again to the RFIN SMA connector. Apply the dc threshold voltage that causes the circuit to trip to the VIN_N SMA connector or to the TPVIN_N yellow test point. Reset the internal SR flip flop by pressing the RST button. Detailed configuration options for the evaluation board are listed in Table 7. VRMS RED JOHNSON142-0701-851 VPOS VPOS Q DECL VPOS 5 4 3 2 1 RFIN JOHNSON142-0701-851 DNI L1 TBD0402 TBD0402 R3 DNI TBD0402 C2 DNI DNI TBD0402 L2 R1 TBD0402 DNI YEL TCAL C5 DNI TBD0402 R8 82.5Ω 0.47µF C4 R10 0Ω 1 GND BLK C3 0.1µF R6 4.02Ω C12 0.1µF ADL5904ACPZN DUT1 16 15 14 13 12 10 9 4 3 1 R2 0Ω 0Ω R9 VIN_N 1 2 3 4 5 C17 DNI 0.1µF 1 TPVIN_N YEL R4 10kΩ 1.1kΩ R28 3 4 2 1 RST B3S1000 TBD0603 C1 DNI R31 10kΩ 2 3 1 S1 09-03-201-02 100pF C6 0.1µF C7 VPOS 1 1 ENBL YEL 10nF C14 YEL TP1 1 C16 TBD0603 DNI 0 R16 R21 0Ω 826936-2 2 1 QX 5 4 3 2 1 JOHNSON142-0701-851 JOHNSON142-0701-851 1 2 3 4 5 C15 TBD0603 DNI R19 0Ω 826936-2 QX 1 2 5 4 3 2 1 Q JOHNSON142-0701-851 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 VIN– RST ENBL QBAR Q VRMS CRMS DECL VCAL RFIN AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 AGND1 Q Q Figure 54. Evaluation Board Schematic |
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