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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RF64W датащи(PDF) 74 Page - HOPE Microelectronics CO., Ltd. |
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RF64W датащи(HTML) 74 Page - HOPE Microelectronics CO., Ltd. |
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74 / 76 page  ADVANCED COMMUNICATIONS & SENSING Page 74 of 76 RF64 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com The layers description is illustrated in Figure 57: Signal (35um) Isolation (FR4, 1.6mm) Ground plane Figure 57: Reference Design ‘s Stackup The layout itself is illustrated in Figure 58. 19mm 9mm Figure 58: Reference Design Layout (top view) 7.5.3. Bill Of Material Table 35: Reference Design BOM Ref Value 315MHz 434MHz Tol (+/-) Techno Size Comment U1 RF64 - Transceiver IC TQFN-32 - U2 315MHz 434 MHz - SAW Filter 3.8*3.8 mm Plotted in section 7.5.4 Q1 12.8 MHz 15 ppm at 25°C 20 ppm over -40/+85°C 2ppm/year max AT-cut 5.0*3.2 mm Fundamental, Cload=15 pF R1 1 Ω 1% - 0402 PA regulator R2 6.8K 1% - 0402 Loop filter C1 1µF 15% X5R 0402 VDD decoupling C2 100NF 15% X5R 0402 Top regulator decoupling C3 100NF 10% X7R 0402 Digital regulator decoupling C4 47NF 10% X7R 0402 PA regulator decoupling C5 100NF 10% X7R 0402 VCO regulator decoupling C6 6.8NF 10% X7R 0402 Loop Filter C7 680P 5% NPO 0402 Loop Filter C8 10P 0.25 pF NPO 0402 Matching C9 150PF 5% NPO 0402 DC block and L4 adjust L1, L2 33NH 19NH 0.2 nH Wire wound 0402 VCO tank inductors L3 19NH 5% Wire wound 0402 PA Choke L4 27NH 5% Multilayer 0402 Matching C10, C11 NC - - 0402 - C12* 47 P 5% NPO 0402 DC block *Not part of the ref. design (not required for direct antenna connection). Note: for battery powered applications, a high value capacitance should be implemented in parallel with C1 (typically 10 µF) to offer a low impedance voltage source during startup sequences. |
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