Anaren Integrated Radio A2500R24x Users Manual Release Date 01/10/11
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Users Manual Models A2500R24A and A2500R24C Contents 1. Overview.............................................................................................................................. 5 1.1. A2500R24A .................................................................................................................... 5 1.2. A2500R24C .................................................................................................................... 5 1.3. Features ...................................
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A2500R24x – Users Manual Release Date 01/10/11 Page 5 of 26 1. Overview The A2500R24C and A2500R24A are surface mount modules with an integrated crystal, internal voltage regulator, matching circuitry and filtering. The A2500R24A has an integral antenna, whereas the A2500R24C utilizes an external antenna through a U.FL connector (see Table 1). The modules operate in the global non-licensed 2.
Page 6 of 26 1.3. A2500R24x – Users Manual Release Date 01/10/11 Features Benefits Summary: Features: • • • • • • • • • • • • • • • • • • • • • Frequency range: 2400 – 2483.5 MHz Ultra small package size 9mm x 12mm x 2mm Impedance controlled multi-layer PCB Shielded Package 1.8 to 3.
A2500R24x – Users Manual Release Date 01/10/11 Page 7 of 26 To transmit, a frame of data is placed in the FIFO; this may include a destination address. A transmit command is given, which will transmit the data according to the initial setup of the registers. To receive data, a receive command is given, which enables the unit to “listen” for a transmission and when one occurs put the received frame in the FIFO.
Page 8 of 26 A2500R24x – Users Manual Release Date 01/10/11 Figure 1 The functionality of the A2500R24A, using an integral antenna Figure 2 The functionality of the A2500R24C, using an external antenna.
A2500R24x – Users Manual Release Date 01/10/11 Page 9 of 26 Figure 3 Transceiver IC block diagram. 1.4.1. Typical Flow After initial setup of registers for desired behavior, the normal operation flow diagram is shown in Figure 4. In applications of infrequent data transmissions the transceiver would be in “sleep” mode to save power (400nA). From there it would awaken and then enter “idle” mode.
Page 10 of 26 Medium access Figure 4 Transceiver state diagram A2500R24x – Users Manual Release Date 01/10/11
A2500R24x – Users Manual Release Date 01/10/11 1.5. Page 11 of 26 Applications Ultra low-power wireless applications, operating in the 2400-2483.5 MHz ISM/SRD bands.
Page 12 of 26 A2500R24x – Users Manual Release Date 01/10/11 2. Product Approvals The A2500R24C and A2500R24A have been designed to meet most national regulations for world-wide ISM-band use. In particular the radio modules have been certified to the following standards. 2.1.
A2500R24x – Users Manual Release Date 01/10/11 Page 13 of 26 Contains Transmitter Module FCC ID: X7J-A10030501 -orContains FCC ID: X7J-A10030501 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 2.1.2.
Page 14 of 26 A2500R24x – Users Manual Release Date 01/10/11 The following statement must be included as a CAUTION statement in manuals and OEM products to alert end users of FCC RF Exposure compliance: To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during operation. To ensure compliance, operation at closer than this distance is not recommended.
A2500R24x – Users Manual Release Date 01/10/11 Page 15 of 26 Label: Contains IC: 8975A-A10030501 From section 7.1.6, RSS-Gen, Issue 2, June 2007, Digital Circuits: If the device contains digital circuitry that is not directly associated with the radio transmitter, the device shall also have to comply with ICES-003, Class A or B as appropriate, except for ICES-003 labeling requirements.
Page 16 of 26 2.4. A2500R24x – Users Manual Release Date 01/10/11 Potential Interference Sources The radio modules operate in the unlicensed ISM band, in which there are many other applications e.g. WLAN, Bluetooth® and microwave ovens. This can cause interference that may, in certain conditions, prohibit radio communication. The user is encouraged to implement a number of channels and to alternate between those channels based on one of the below methods.
A2500R24x – Users Manual Release Date 01/10/11 Page 17 of 26 The user is encouraged to have packet transmission durations less than half the AC mains period and implement an acknowledge/retransmit method. 2.4.4.
Page 18 of 26 A2500R24x – Users Manual Release Date 01/10/11 antenna gain may not exceed 1W. The following table shows configurations that are compliant with this use and the expected performance. Data Rate Deviation kb/s kHz 1.2 140 2.4 140 4.8 140 10 140 20 140 40 140 75 140 125 140 250 140 Requirement F0min F0max Max Power MHz MHz dBm 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.0 2401.3 2480.4 1.
A2500R24x – Users Manual Release Date 01/10/11 Page 19 of 26 3. Electrical Characteristics 3.1. Absolute Maximum Ratings Under no circumstances must the absolute maximum ratings given in Table 2 be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. Caution! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage. Parameter Min Max Unit Supply Voltage (Vdd) -0.3 3.
Page 20 of 26 3.2. A2500R24x – Users Manual Release Date 01/10/11 Operating Conditions Parameter Min Max Unit Supply Voltage (Vdd) 1.8 3.6 V Temperature Range -40 +85 ˚C 3.3. Condition/Note Pin Out The A2500R24C and A2500R24A radio modules share a common pin-out and foot print, that is also shared by Anaren modules using other frequencies -- thus enabling easy changeover from one to another, e.g. if changing the frequency, antenna scheme, or adaptive antenna tuning is desired.
A2500R24x – Users Manual Release Date 01/10/11 5 NC NC 6 NC NC 7 Vdcoup1 Analog 8 9 GND SCLK 14 15 Ground Digital Input MISO/GDO1 Digital Output MOSI Digital Input _CSN Digital Input GDO0 Digital I/O (Analog output) GDO2 Digital I/O Vdcoup2 Analog 16 NC NC 17 18 GND Vdd 19 NC Ground Power Supply NC 20 NC NC 21 NC NC 22 DNC NC 23 DNC NC 10 11 12 13 Page 21 of 26 No Connect, the pin is not connected internally, but is reserved for future expansion.
Page 22 of 26 24 DNC A2500R24x – Users Manual Release Date 01/10/11 NC connect this pin to anything. Do Not Connect. Internal GND connection used during testing, not recommended to connect to main GND. Table 3 Pin Descriptions 3.4. Recommended Layout Figure 6 Recommended PCB layout.
A2500R24x – Users Manual Release Date 01/10/11 Page 23 of 26 Figure 8 Mounting the module along an edge Figure 7 Mounting the module in a corner Figure 9 Mounting the module along an edge with overhang. This option is not generally recommended, but is a method to save PCB in an environmentally benign environment Figure 10 Mounting the module along an edge, with a ground plane cut-out. This option degrades range slightly.
Page 24 of 26 3.5. A2500R24x – Users Manual Release Date 01/10/11 Power Supply Considerations Noise on the power supply line reduces the sensitivity of a receiver and modulates onto a transmitters signal, both of which causes a degradation of link quality and hence a reduction in range. The A2500R24C and A2500R24A radio modules each have an integral ferrite bead in the supply line from pin 18 (Vdd) and decoupling capacitance to reduce any noise on the incoming power supply line.
A2500R24x – Users Manual Release Date 01/10/11 Page 25 of 26 HISTORY Date 05/31/10 07/15/10 12/17/10 01/10/11 Author Richardson Richardson Richardson Richardson Change Note No.
Thank you for learning more about the Anaren Integrated Radio (AIR) module line. If you have additional questions, need samples, or would like a quote – please do not hesitate to email the AIR team at AIR@anaren.com or contact any of these authorized distributors of the AIR product line. Worldwide North America Anaren Microwave, Inc. 6635 Kirkville Road East Syracuse, NY 13057 Tel: +1 315 432 8909 +1 800 411 6596 Fax: +1 315 432 8970 Anaren Microwave (Europe), Inc.
