micrf507ymltr Micrel Semiconductor, micrf507ymltr Datasheet
micrf507ymltr
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micrf507ymltr Summary of contents
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General Description The MICRF507 is a fully integrated FSK transceiver with +10dBm power amplifier and transmit/receive switch. The device is targeted at automated meter reading (AMR) applications in the China Short Range Device (SRD) frequency band of 470MHz to 510MHz. ...
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Micrel, Inc. ® RadioWire FSK Transceiver Selection Guide................................................................................................................ 4 Ordering Information ......................................................................................................................................................... 4 Block Diagram .................................................................................................................................................................... 4 Pin Configuration ............................................................................................................................................................... 5 Pin Description ................................................................................................................................................................... 5 (1) Absolute Maximum Ratings ........................................................................................................................................... 7 (2) Operating Ratings ........................................................................................................................................................... 7 (4) Electrical Characteristics ............................................................................................................................................... ...
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Micrel, Inc. Typical Application .......................................................................................................................................................... 35 Bill of Materials................................................................................................................................................................. 36 Layout Considerations .................................................................................................................................................... 37 Layer Definition ..................................................................................................................................................... 37 Grounding.............................................................................................................................................................. 37 RF Traces.............................................................................................................................................................. 37 Supply Routing...................................................................................................................................................... 37 PLL Loop Filter...................................................................................................................................................... 37 Overview of Programming Bits....................................................................................................................................... 38 Detailed Description of Programming Bits.................................................................................................................... ...
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Micrel, Inc. ® RadioWire FSK Transceiver Selection Guide Device Frequency Range MICRF505 850MHz to 950MHz MICRF505L 850MHz to 950MHz MICRF506 410MHz to 450MHz MICRF507 470MHz to 510MHz Ordering Information Part Number MICRF507YML TR Block Diagram March 2010 Maximum Data Rate ...
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Micrel, Inc. Pin Configuration Pin Description Pin Number Pin Name 1 RFGND 2 PTATBIAS 3 RFVDD 4 RFGND 5 ANT 6 RFGND 7 RFGND 8, 16, 17 CIBIAS 10 IFVDD 11 IFGND 12 ICHOUT 13 QCHOUT 14 ...
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Micrel, Inc. Pin Description (continued) Pin Number Pin Name 26 DIGGND 27 CPOUT 28 GND 29 VARIN 30 VCOGND 31 VCOVDD Exposed Paddle March 2010 Type Pin Function Digital ground. O PLL charge pump output. Substrate ground. I VCO varactor ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V )...................................................+2.7V DD Voltage on any pin (GND = 0V).............. -0.3V to +2.7V Lead Temperature (soldering, 4sec.)......................... 300°C Storage Temperature (T ) ..........................-55°C to +150°C s (3) ESD Rating ..................................................................2kV Electrical Characteristics f ...
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Micrel, Inc. Electrical Characteristics Symbol Parameter (5) Occupied Bandwidth nd (5) 2 Harmonic rd (5) 3 Harmonic Spurious Emission in Restricted (5) Bands < 1GHz Spurious Emission < 1GHz Spurious Emission > 1GHz Receive Section Rx Current Consumption Rx Current ...
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Micrel, Inc. Electrical Characteristics Symbol Parameter P 1dB Compression 1dB Input IP3 LO Leakage (5) Spurious Emission Input Impedance with no matching components RSSI Dynamic Range RSSI Output Range Digital Inputs/Outputs V Logic Input High IH V Logic Input Low ...
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Micrel, Inc. Functional Description Control (3-wire) Interface General The MICRF507 operation is controlled through a set of 8- bit registers. The chip has a total of 23 readable registers (addresses 0-22) of which 22 (addresses 0-21) are writeable. Through this ...
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Micrel, Inc. Adr A6… 0000000 LNA_by PA2 0000001 Modulation1 Modulation0 0000010 CP_HI SC_by 0000011 ‘1’ ‘1’ 0000100 Mod_F2 Mod_F1 0000101 - - 0000110 - Mod_clkS2 0000111 BitRate_clkS1 BitRate_clkS0 0001000 ‘1’ ‘1’ 0001001 ‘0’ ‘0’ 0001010 - - 0001011 ...
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Micrel, Inc. Writing This method is used to write either to one register (see Figure 1), or any number of registers with consecutive addresses up to all 22 writeable registers (see Figure single transaction. Procedure: • Bring ...
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Micrel, Inc. Reading Any number of registers with consecutive addresses, from one up to all 23, can be read. Procedure: • Bring CS active (high initially an input. • Clock in a byte consisting of the address bits ...
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Micrel, Inc. Control Interface Timing Figure 4 and Table 2 give the timing specifications for the control interface. When in Receive or Transmit mode (but not Power-down or Standby mode), an additional timing constraint applies: elapsed time between falling edges ...
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Micrel, Inc. Clock Generation The MICRF507’s crystal oscillator: • Serves as the reference for the synthesizer that is the carrier and local oscillator source. • Is divided down to clock the switched-capacitor IF filter. • Is divided down to generate ...
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Micrel, Inc. Crystal Oscillator (XCO) The crystal oscillator’s role as the synthesizer reference demands very good phase and frequency stability. As shown in Figure 7, the external components required for the oscillator are a crystal, connected between pins 23 and ...
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Micrel, Inc. An external reference clock, when used instead of a crystal, should be applied to pin 24 (XTALOUT) with pin 23 (XTALIN) not connected. To maintain proper DC biasing within the chip, use AC-coupling between the external reference and ...
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Micrel, Inc. Field Name Sync_en Table 6. Register Bit Fields for Data Interface and Bit Synchronization Sync_en RECEIVE DATA PATH Filter & FROM data slicer DEMOD BITSYNC_CLK March 2010 Number Location Description of bits of bits ...
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Micrel, Inc. Mode Sync_en Direction 0 Output Transmit 1 Output 0 Output Receive 1 Output In sync mode (Sync_en bit set to 1), the transmitted bit stream is clocked with the precision of the MICRF507’s crystal oscillator, which relaxes requirements ...
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Micrel, Inc. Frequency Synthesizer The MICRF507 frequency synthesizer is an integer-N phase-locked loop consisting of: • a reference source, made of an M-divider clocked by the crystal oscillator • a voltage controlled oscillator (VCO) • a programmable frequency divider made ...
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Micrel, Inc. Downconverter PA A6…A0 D7 0001010 - 0001011 - 0001100 N0_7 0001101 - 0001110 M0_7 0001111 - 0010000 - 0010001 N1_7 0010010 - 0010011 M1_7 March 2010 VCO Prescaler Div 2 Div 2 XCO Figure 12. PLL Block Diagram ...
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Micrel, Inc and A are numbers of length 12, 12 and 6 bits, respectively The synthesizer’s output frequency can be calculated from the following equation XCO VCO ( ) PD × + × ...
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Micrel, Inc. Pin 27 CP_OUT Figure 14. Second and Third Order Loop Filter Table 12 shows three different loop filter designs, the first two for VCO modulation and the last one for modulation using the internal ...
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Micrel, Inc. Receiver Number Field Name of bits By_LNA 1 PF_FC 2 SC_by 1 ScClk 5 RSSI_en 1 FEEC 4 FEE 8 The receiver is a zero intermediate frequency (ZIF) type employing low-power, fully integrated low-pass filters. A low noise ...
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Micrel, Inc. The front end’s input impedance, with no matching network, is close to 50Ω as shown in Figure 15. This gives an input reflection coefficient of about -13dB. Although the receiver does not require a matching network to optimize ...
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Micrel, Inc. Another use for RSSI is to determine that transmit power can be reduced in a system. If the RSSI detects a strong signal, the transmitter could be alerted to reduce its transmit power and so reduce current consumption. ...
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Micrel, Inc. XCOtune Procedure Example A procedure such as the algorithm given below can be called during production (storing the calibrated XCO_tune value), at regular intervals, or implemented in the communication protocol when the frequency has changed. The MICRF507 measures ...
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Micrel, Inc. Transmitter Power Amplifier The maximum output power of the power amplifier (PA) is approximately 10dBm with a 50Ω load. For maximum output power, the load seen by the PA must be resistive. Higher output power can be obtained ...
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Micrel, Inc. C5 39pF ANT (pin 5) C4 12pF Figure 18. LC Filter This filter is designed for the 490MHz band with 50Ω terminations. Component values may have to be tuned to compensate for layout parasitics. Frequency Modulation The MICRF507 ...
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Micrel, Inc. Divider Modulation When Modulation[1:0] = 10, two sets of divider values need to be programmed. The divider values stored in the M0, N0, and A0 registers are selected to transmit a ‘0’ and the M1, N1, and A1 ...
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Micrel, Inc. Frequency Deviation under VCO Modulation Three factors determine the deviation at which the data stream is modulated: modulator clock frequency, capacitor charge/discharge current, and setting. After each is presented in turn, the complete formula for deviation is given. ...
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Micrel, Inc. Figure 22 shows two waveforms with different attenuator Mod_Aa < Mod_Ab setting Mod_A is increased, the frequency deviation is lowered and vice versa. The resulting frequency deviation in terms of the parameters discussed above is given ...
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Micrel, Inc. System Modes and Initialization Start-up and Initialization After supply voltage is applied to the MICRF507, a power on reset period elapses during which it should be considered unknown state. The microcontroller should wait until ...
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Micrel, Inc. Message Coding and Formatting DC Balanced Line Coding Line coding, diagrammed in Figure 24, is used when a communication channel imposes constraints on bit sequences. An encoding stage that ensures DC balance (equal numbers of ‘1’ and ‘0’ ...
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Micrel, Inc. Typical Application March 2010 35 MICRF507 M9999-032210-B ...
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Micrel, Inc. Bill of Materials Item Part Number C1 GRM188R71C103K C2 GRM219R71C104K C3 C4 GRM1885C1H120J C5 GRM1885C1H390J C6 GRM1885C1H120J C7 GRM155R61A102K C8, C9 GRM1555C1H1R5C C10 GRM155R61A102K C11 GRM155R71H221K C12, C13 GRM155R61A102K R1 CRCW04026200RJK R2 CRCW04020RJK R3 CRCW040227KJK R5 CRCW040282KJK R6 ...
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Micrel, Inc. Layout Considerations To ensure the best RF performance, a carefully planned layout is essential. Grounding, RF path geometry, supply routing, and layer definition all play a role in an optimal design. These are discussed below, and a recommended ...
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Micrel, Inc. Overview of Programming Bits Address Field A6..A0 D7 0000000 LNA_by 0000001 Modulation1 Modulation0 0000010 CP_HI SC_by IFBias_s IFA_HG 0000011 (“1”) 0000100 Mod_F2 Mod_F1 0000101 - 0000110 - Mod_clkS2 0000111 BitRate_clkS1 BitRate_clkS0 SC_HI ScClk_X2 0001000 (“1”) PrescalMode_s Prescal_s 0001001 ...
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Micrel, Inc. Detailed Description of Programming Bits ADR # BIT # Name 0000000 7 By_LNA 6 PA2 5 PA1 4 PA0 3 Sync_en 2 Mode1 1 Mode0 0 Load_en 0000001 7 Modulation1 6 Modulation0 5 OL_opamp_en 4 PA_LDc_en 3 RSSI_en ...
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Micrel, Inc. ADR # BIT # Name 0 Mod_I0 0000101 7 --------- 6 --------- 5 Mod_FHG 4 Mod_shape 3 Mod_A3 2 Mod_A2 1 Mod_A1 0 Mod_A0 0000110 7 --------- 6 Mod_clkS2 5 Mod_clkS1 4 Mod_clkS0 3 BitSync_clkS2 2 BitSync_clkS1 1 ...
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Micrel, Inc. ADR # BIT # Name 0 XCOtune0 0001010 7 --------- 6 --------- 5 A0_5 4 A0_4 3 A0_3 2 A0_2 1 A0_1 0 A0_0 0001011 7 --------- 6 --------- 5 --------- 4 --------- 3 N0_11 2 N0_10 1 ...
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Micrel, Inc. ADR # BIT # Name 5 A1_5 4 A1_4 3 A1_3 2 A1_2 1 A1_1 0 A1_0 0010000 7 --------- 6 --------- 5 --------- 4 --------- 3 N1_11 2 N1_10 1 N1_9 0 N1_8 0010001 7 N1_7 6 ...
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Micrel, Inc. ADR # BIT # Name 5 LO_IB0 4 PA_IB4 3 PA_IB3 2 PA_IB2 1 PA_IB1 0 PA_IB0 0010101 7 --------- 6 --------- 5 --------- 4 --------- 3 FEEC_3 2 FEEC_2 1 FEEC_1 0 FEEC_0 0010110 7 FEE_7 6 ...
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Micrel, Inc. Category Number Field Name of bits XCOtune RefClk_K BitRate_clkS Mod_clkS BitSync_clkS DataI/F Sync_en CP_HI VCO_Freq VCO_IB LD_en By_LNA PF_FC SC_by ScClk RSSI_en FEEC FEE Modulation Mod_I Mod_A Mod_F PA PA_by System Mode ...
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Micrel, Inc. OutS3 OutS2 OutS1 ...
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Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, ...