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Anleitung Zusammenfassung
2 INTRODUCTION ....................................................................................................................... 3 TYPICAL PERFORMANCE...................................................................................................... 3 MECHANICAL DIMENSIONS AND COMPONENT PLACEMENT ......................................... 4 CIRCUIT DIAGRAM.................................................................................................................. 4 LAYOUT.................................................................................................................................... 8 ANTENNAS............................................................................................................................... 8 BILL OF MATERIALS...............................................................................................................8 BILL OF MATERIALS, CC1000PP-433........................................................................................ 9 BILL OF MATERIALS, CC1000PP-868...................................................................................... 10 SWRU060 Page 2 of 11 Introduction The CC1000 is a very flexible and feature-rich single-chip very low-power RF transceiver. Chipcon has designed the CC1000PP plug-and-play module to serve as a reference layout and enable very quick prototyping of an RF system. The tiny CC1000PP module (28x20 mm) contains all RF components required for proper operation. This includes all the components mentioned in the CC1000 application circuit (see datasheet for details), as well as a reference crystal and a LC output filter. The layout is based on a standard, inexpensive 2-layer 1.6mm thick FR-4 PCB process, and has been carefully optimised by Chipcon. Components are mounted on one side only, the component side is used for signal routing, and the “solder” (reverse) side is used for a ground plane. The CC1000PP layout can easily be used as a reference layout by importing it into a PCB CAD program. Chipcon provides the layout in the industry-standard Gerber format. To download the files, please visit the Chipcon web site. As the CC1000PP module contains only the components required for operation, the layout does not require major modifications when used to make a custom PCB, the user can merely delete the connector pins at each end of the module. But it is very important that the component placement, routing and vias are not altered if the same performance is to be achieved. If a four layer PCB is to be used, either the two top layers should be used for the RF part, or layer 1 and 4. Layer 4 should then be the ground plane and layers 2 and 3 should be masked off. In a ready-built form, the CC1000PP is ideal for quick prototyping. The module may be connected to a prototyping board or PCB containing the rest of the system. The CC1000 can in this way be tested in a complete system without having to create a custom RF PCB layout. Full documentation is provided for this module, including schematics and PCB layout. This information can be downloaded from Chipcon’s web site. Typical performance The table below shows typical performance at 3 V / 25°C. Parameter CC1000PP-433 CC1000PP-868 Unit 433 MHz 868 MHz 915 MHz Sensitivity, 2.4 kBaud -111 -107 -105 dBm Output power, max 8 2.5 0.5 dBm RF frequency accuracy ± 10 ± 10 ± 10 ppm LO leakage -68 -62 -59 dBm 2nd harmonic <-36 <-30 <-40 dBc dBm 3rd harmonic <-30 <-30 <-40 dBc dBm Current consumption, TX 24 23 23 mA Current consumption, RX 9.7 11.7 11.7 mA Current consumption, PD 100 100 100 nA SWRU060 Page 3 of 11 Mechanical dimensions and component placement The CC1000PP module measures 28x20mm, and has been designed for a two-sided 1.6mm thick PCB using industry-standard FR-4 board material. Components are mounted on only one side, and the result is a very small, inexpensive module that can satisfy regulation requirements. On each end of the board are connectors for interfacing the module to an external system. An external antenna, and a 2.1-3.6V power supply should be connected to the top connector (P2). The RSSI/IF signal can also be accessed via this connector. The lower connector (P1) can be used to connect an external micro-controller to the data- and configuration interface of the CC1000. Figure 1. Mechanical drawing of CC1000PP module (not to scale) To ensure optimum RF performance, an external antenna should be soldered directly to the antenna terminals, or a 50 Ohm microstrip line should be used from the antenna terminal to the external antenna connector. For applications not demanding optimum RF performance, a pin-row connector may be used to connect the antenna signal to another PCB, but be aware that this can lead to non-optimal sensitivity and output power, and that measurements using this arrangement should not be used to characterise the RF performance of CC1000. For more information on antennas, please see Chipcon application note AN003. Circuit diagram Th...