JUNE 1995 DS3506-7.3 DE6003 DIGITAL RADIO TRANSCEIVER (Supersedes DS3506-6.3, September 1994) The DE6003 is a high performance frequency hopping microwave radio, designed for spread spectrum operation. It operates in the 2·4 to 2·5GHz band. Portions of this band are available for data transmission on an unlicensed basis in most countries on a shared basis with existing users (that include microwave ovens, intruder alarms etc). The radio is highly resistant to interference and has many other design features that ensure the most reliable data transfer possible (when used in conjunction with an advanced protocol). Co-location with other simultaneous users (as well as interferers) is possible, giving an unsurpassed data density in a given area. The radio has been designed specifically for portable computer applications (including use ‘on the move’). It is also suitable for a wide variety of other applications including inventory control, point of sale terminals (including handheld) and data logging. FEATURES ■ Rapid Frequency Hopping with 1MHz Channels 2·4 to 2·5GHz ■ Designed To Meet World Wide Standards ■ 625 kb/s Data Rate ■ Highly Selective Receiver, Wide Dynamic Range ■ High Simultaneous User Density ■ Diversity for Mobile Applications ■ Fast Switching for Support of Advanced, Interference Resistant Protocols ■ Miniature Size with Low Power Consumption for Handheld Use DE6003 digital radio transceiver RELATED DOCUMENTS GPS Outline drawing number: M50633-A2 FCC Rule 15.247 ETSI ETS 300-328 Japanese specification number RCR STD-33 ISO9000 Quality Manuals GPS application notes AN142,143,144,145, 154 and 203 for further design information ORDERING INFORMATION DE6003-001 Max. transmit power: 120dBm DE6003-002 Max. transmit power: 122dBm ANTENNAS VCC 25 RX/TX VCC (15V) (1 3V to 1 6V) ANTSEL SWITCHING REGULATOR SAW 2 38MHz SAW 1 350MHz 90° VEE (25V) RXD RSSI S1 S2a S2b LO2 PLL 312MHz 2·05-2·15 GHz 7 HOPPING PLL CHANNEL SELECT LOADB 440/41 2 700MHz S2c 42 TX PLL 45 POWER CONTROL 140MHz GND Fig.1 DE6003 functional block diagram TXD DE6003 EXTERNAL INTERFACE The DE6003 transceiver has a simple external interface, with all but three interface connections having CMOS compatible switching levels: some inputs have pull-down or pull-up resistors. The DE6003 connection list, Table 2, is followed by a description of each of the external connections in pin number order. On power up, the DE6003 transceiver should have its control inputs set to receive with the power amplifier off. On power switch-on, a channel within the 101 channels is selected by the value that is on the select data inputs SD(6:0); the correct channel should be loaded by placing the channel number on the select data inputs and strobing the channel data in with LOADB. The antenna select input (ANTSEL) is used to switch between the two antenna ports; this input should be set to antenna 1 for transmit and only switched when the transceiver is in receive mode for antenna diversity selection. The data input (TXD) has data applied in simple non-return to zero (NRZ) format with the maximum consecutive ‘1’s or ‘0’s limited to 16. Receive data (RXD) is demodulated and output in NRZ format with no clock extracted. The RXD output is designed to drive a high impedance CMOS input with a maximum load capacitance of 6pF. Loads in excess of 6pF will extend the negative edge time of the output data resulting in pulse stretching. ELECTRICAL CHARACTERISTICS The Electrical Characteristics are guaranteed over the following range of operating conditions, unless otherwise stated: TAMB = 0°C to 155°C, VCC = 5V±5%, VCC25 = 13V to 16V. Value Characteristic Symbol Units Conditions/comments Min. Max. 0 3·5 1·5 VCC V V 210 10 µA µA VIN = 0V VIN = VCC =5·25V All Inputs Input voltage low Input voltage high VIL VIH PAOFF, PWRLO, ANTSEL Input current low Input current high IIL IIH RX/TX Input current low Input current high IIL IIH 2400 50 2600 150 µA µA VIN = 0V VIN = VCC =5·25V LOADB Input current low Input current high IIL IIH 2250 2400 10 µA µA VIN = 0V VIN = VCC =5·25V STDBY Input current low Input current high IIL IIH 210 200 µA µA VIN = 0V VIN = VCC =5·25V SD (6:0), TXD Input current low Input current high IIL IIH 210 200 µA µA SYNLOK Output voltage low Output voltage high VOL VOH 0 VCC 20·5 0·5 VCC V V Note: Not CMOS compatible switching levels. at 1mA sink at 1mA source VOL VOH 0 3·8 75 1·2 VCC 150 V V ns VCC =15V at 100µA VCC =15V at 100µA Load = 6pF CLK Output current low Output current high IOL IOH 20·25 0·25 21·6 1·6 mA mA Note: Not CMOS compatible switching levels. For load impedance <300Ω See AN142 for interface circuit RSSI Output voltage low Output voltage high VOL VOH 0 3·3 V V 30 dB RXD Output voltage low Output voltage high Rise/fall time ANT1, ANT2 Isolation between ports Negative Supply, VEE Output current Output voltage Ripple and noise 2 10 IEE VEE 0 24·75 Note: Analog output, source impedance 10kΩ – not CMOS compatible. See Fig 9. Nominal 50Ω load on each port mA 215 V 25·25 Test at VCC25 = +5V mVp-p at 215mA 50 Table 1 DE6003 EXTERNAL CONNECTIONS, 40-WAY CONNECTOR Pin Name Description 1 FRMGND 2,4,6 VCC 3 PWRLO Power Level Control. Sets transmitter power to high (PWRLO = ‘1’) or low (PWRLO = ‘0’). 5 ANTSEL Diversity Control. This signal is used to select antenna port ANT1 (ANTSEL = ‘0’) or antenna port ANT2 (ANTSEL = ‘1’). This can be used to make use of diversity to overcome signal nulling due to destructive interference caused by multipath propagation. 7 RX/TX Receive/Transmit control. Switches between Receive (RX/TX = ‘1’) and Transmit (RX/TX = ‘0’) functions. CMOS compatible with 10kΩ nominal pull up resistor. 8 VEE 25V output from internal switching regulator, powered by external 15V supply, VCC25, pin 15. 9 RXD Received Data output.This low drive current data output is the output from the receiver demodulator. Total load on RXD should be less than 6pF. 10 VEEGND 25V Ground. 11 RXDGND Receive Data Ground. See note 1. 12 PAOFF 13 INTERLOCK 14,16,18,20 GND 15V Ground. Internally connected to all other grounds 1, 10, 11,19, 23 and 33. 15 VCC25 Positive supply input for internal 25V VEE generator. 17 Test 19 GND25 Ground for 25V regulator. Internally connected to all ground pins 1,10,11,14,16,18, 20, 23 and 33. 21,22,24, 26,27 NC No Connection. These pins are not used, but no connection should be made to them as GPS reserves the right to use them for future expansion. 23 CLKSHLD 25 CLK System Clock. This synthesiser clock output at 10MHz is also made available during standby as well as being available during normal operation (it is not a recovered data clock). This output is a constant current sink/source which must be terminated such as to keep its voltage swing low. See note 2. 28 SYNLOK Synthesiser Lock Monitor. Should only be used to indicate PLL failure. Lock (SYNLOK = ‘0’) is defined as all three PLLs in lock. Unlock (SYNLOK = ‘1’) is defined as an Error Condition. Note that when switching channels unlock may occur for short periods while locking on new channel. 29 TXD 30 STDBY Standby . When low, disables radio function, placing all ICs into a low current mode; however, the 10MHz clock and the 25V regulator continue to run in Standby mode, providing a clock and 25V output on the 40-way connector. CMOS compatible with 30kΩ nominal pull down resistor. 31 RSSI Receive Signal Strength Indicator. Received in-band signal level monitor. The analog RSSI output increases monotonically from 0V to 13V proportional to the logarithm of the input signal power. Source impedance is 10kΩ . 32 34 35 37 39 36 38 SD0 SD1 SD2 SD3 SD4 SD5 SD6 Channel Select Code, SD6:0. These 7 data lines determine the channel used for both transmit and receive.They are latched on the falling edge of LOADB and implemented on the rising edge of LOADB. and are CMOS compatible with 30kΩ nominal pull down resistors. SeeTables 3 and 4. 33 RSSIGND Received Signal Strength Indicator Ground. Internally connected to all ground pins 1, 10,14,16,18,19,20 and 23. 40 LOADB Channel Select Load Pulse. This active low pulse loads SD (6:0) code into a data latch to set the required channel. CMOS compatible with 30kΩ nominal pull up resistor. See Tables 3 and 4. Frame Ground. Connects to antistatic circuits on DE6003 and internally connected to ground. 15V supply pins. Transmitter Power Amplifier Control. PAOFF is used to turn the transmitter power amplifier on and off, in conjunction with RX/TX. Connected to ground and can be used to indicate that the DE6003 is connected. See note 2. Open circuit for normal mode, high for test mode. For factory use only. System Clock Ground. See note 1. Transmitter Data Input. CMOS compatible with no pull up/pull down resistor. NOTES. 1. All ground pins (1, 10, 11, 14, 16, 18, 19, 20, 23 and 33) are internally connected. 2. See AN142, Designing with the DE6003, for further information. Table 2 3 DE6003 Channel Channel select code (SD0 = LSB) Frequency (GHz) 0 1 2 3 0000000 0000001 0000010 0000011 2·400 2·401 2·402 2·403 98 99 100 1100010 1100011 1100100 2·498 2·499 2·500 Illegal Channel Allocation In order to keep transmissions to within the 2·4 to 2·5GHz frequency band, channels 101 and above will default to the channels within this band as listed in Table 4. Note that the channels used are dependent on the frequency allocation in the country of use and the drive circuit/control logic must limit the selected channels to within these frequency limits. Antenna Ports Two antenna ports are available (ANT1 and ANT2) for receiver diversity and are selected by ANTSEL (pin 5 on the 40-way connector).These ports have 50V nominal impedance. The port isolation is specified in Table 1. Table 3 Channel allocation TRANSCEIVER CHARACTERISTICS General Electrical Performance Illegal channel Illegal channel select code Default frequency (GHz) Default channel 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 1100101 1100110 1100111 1101000 1101001 1101010 1101011 1101100 1101101 1101110 1101111 1110000 1110001 1110010 1110011 1110100 1110101 1110110 1110111 1111000 1111001 1111010 1111011 1111100 1111101 1111110 1111111 2·500 2·500 2·500 2·444 2·445 2·446 2·447 2·444 2·444 2·446 2·446 2·444 2·445 2·446 2·447 2·444 2·444 2·446 2·446 2·444 2·445 2·446 2·447 2·444 2·444 2·446 2·446 100 100 100 44 45 46 47 44 44 46 46 44 45 46 47 44 44 46 46 44 45 46 47 44 44 46 46 ABSOLUTE MAXIMUM RATINGS Supply voltage, VCC 0V to 16V Supply voltage to VEE generator, VCC25 0V to 16V 20·3 to VCC10·3 Input voltage Operating temperature 0°C to 155°C Storage temperature 220°C to 170°C Transmitter duty cycle See Fig. 2 Maximum RF input 30dBm Stresses above those listed may cause permanent damage to the transceiver. These are stress ratings only and functional operation of the transceiver at those conditions, or at any other condition above those indicated in the operation section of this data sheet is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. NOTE: The VCC25 supply must be applied not less than 10ms before the VCC supply. Failure to observe this requirement could result in premature failure of the transceiver. Table 4 Parameter VCC25 supply current at 3V VCC25 supply current at 5V VCC25 supply current at 6V VCC supply current standby VCC supply current receive VCC supply current transmit DC power supply requirements The VCC (15V) power supply needs to be well regulated, low noise (less than 20mVp-p ripple and noise) and have a source impedance of less than 50mV at 1kHz. The VCC supply has been separated from the input (VCC25) to the 25V (VEE) generator to provide greater flexibility in the overall system design. Extra care should be taken with ripple and noise suppression of the VCC supply if the VCC25 supply is connected to the radio’s main VCC supply. If supplied separately, ripple and noise on the VCC25 supply should be less than 100mVp-p at 1kHz. NOTE: Ripple and noise on the 15V power supply (VCC) modulates the transmitter output and levels above those specified will result in increased spurious output from the DE6003, and will also cause degradation in receiver sensitivity. VCC = 5V, 125°C VCC = 5·25V, 0°C to 1 55°C Min. Typ. Max. Max. 8 80 200 14 120 330 20 140 384 30 18 15 30 150 400 Units mA mA mA mA mA mA NOTES 1. Currents shown are for the transceiver only. 2. Peak input current requirements are>100mA as the 100µF capacitor has to be charged 3. VEE may be supplied from an external source, in which case VCC25 should not be connected. See AN142 for further information. Table 5 Supply currents 4 DE6003 running at lower temperatures. The thermal time constant of the radio is 1 minute and this derating curve can only be applied to transmitter for continuous transmit times of less than 20 seconds; above this time the duty cycle should be considered 100%. For continuous operation the case temperature should not exceed 40°C. Environmental Limiting Conditions of Use ● ● ● ● ● Operational Temperature: 0°C to 155°C. Storage Temperature 220°C to 170°C. Humidity: 95% non-condensing. ESD: Human body model, 4000V. Vibration Testing: 10 t0 2000Hz, displacement 61mm, acceleration 2G. AIR TEMPERATURE (°C) Operating temperature When in operation the transmitter power amplifier (PA) dissipates the highest amount of power and creates the highest temperature. In order to keep the temperatures to a safe level the environment in which the radio is operated must be kept within the values specified in Environmental Limiting Conditions of Use, above. The radio dissipates this heat from the whole of its surface, in particular from the metallic screen; steps must be taken to prevent overheating as early failure of the radio may occur. Depending on the air temperature surrounding the radio, the PA duty cycle must be set to keep the dissipation to a safe value. The transmitter power amplifier derating curve of Fig.2 shows the derating factors that should be applied in order not to exceed the maximum working temperature. Running at the maximum permitted temperature on the PA will (as with all semiconductor devices) result in shorter operational life than 60 55 50 40 30 SAFE WORKING AREA 20 10 0 0 20 40 60 80 93 100 PA DUTY FACTOR (%) Fig. 2 PA duty cycle TIMING SPECIFICATIONS AND CONDITIONS OF USE The timing diagrams, Figs. 3 to 8, show some of the normal sequences used in the control of the DE6003 and are used to illustrate timing relationships. Table 6 is the truth table for these signals values for which are given in Table 7. Each entry in Table 7 is described on pages 9 and 10. STDBY RX/TX PAOFF PWRLO ANTSEL SD (6:0) LOADB L X X X X X X H H L L L 0000000 Receive, ANT 1, low power, PA off, setting Channel 0 H H L L H 0001000 Receive, ANT 2, low power, PA off, setting Channel 8 H H L H L 0010000 Receive, ANT 1, high power, PA off, setting Channel 16 H H L H H X H Receive, ANT 2, high power, PA off H L L L L X H TX ready, ANT 1, low power, PA off H L H L L X H Transmit, ANT 1, low power, PA on H L H H L X H Transmit, ANT 1, high power, PA on State Standby Table 6 Control signals truth table 5 DE6003 DYNAMIC CHARACTERISTICS These Characteristics are guaranteed over the following range of operating conditions and apply to both the DE6003-001 and DE6003-002 unless otherwise stated: TAMB = 25°C, VCC = 5V65%, VCC25 = 13V to 16V, data rate = 625kb/s. Refer to Figs. 3 through 8 and Notes on pages 9 and 10. Symbol Characteristic 65% at VCC = 5V6 0°C to 55°C Units Note Max. Min. Max. VCC = 15V at 25°C Min. Typ. DE6003-001 output power (high) See note (i) 15·5 18 20 DE6003-002 output power (high) See note (i) 15·5 18 22 0 1 3 6·5 12 0 1 - Maximum continuous transmit time - Minimum time between consecutive transmissions - - - Output power (high) ripple Output power (low) Output power (low) ripple t1 t2 Power amplifier rise time to 90% full power Power amplifier fall time to 10% full power Transmitter delay t6 t7 t 10 RX/TX to PA on Receive mode to valid transmit data TX/RX frequency agility - - dBm 1 - - dBm 1 dB 1 16 3 - dBm 1 - dB - 1 - 4 - 4 - 4 µs 2 - 10 µs 2 - - - 20 ms 3 - 80 - µs 3 - - - 800 ns 4 - - 1 - µs 5 5·7 - - - µs 5 80 95 - 110 µs 9 1 6 MHz Tested to conform to the regulatory limits (see page 7) Modulated transmitter bandwidth for 220dBc. See note (i) Transmitter out of band spurious emissions. See note (i) Transmitter out of band spurious emissions, Chan. 84. See note (i) - - 230 - - dBc Transmitter in band spurious emissions - 250 240 - 240 dBc 31 Power off to transmit - - - - 10 ms 7 Standby to transmit - - - - 1 ms 8 0 - - 0 - ns 10 - 1 - µs 10 t 13 t 14 t 15 LOADB pulse data setup time LOADB pulse width 1 - - - - 10 - ns 10 Receiver sensitivity for BER <131025 - 281 277 - 277 dBm 11 25 Receiver sensitivity for BER <1310 , Chan. 84. See note (i) - - 277 - - dBm 11 Max. input signal for BER <131025 - - - 215 - dBm 12 1·35 1·6 1·85 - - µs 13 - 1·20 2·0 µs 13 LOADB pulse data hold time t 16 t 16 t 18 t 19 t 20 t 21 t 21 t 22 Bit period of received data, pseudo random (single bit) Bit period of received data (unbalanced) Received data delay Frequency hop time to valid received data Transmit mode to receive data valid RF burst response to valid data RF burst response to valid data Time to valid data after antenna selection - 1·6 - - - - 3·5 µs 14 - 80 95 - 110 µs 15 - 18 24 6 30 µs 16 - 18 24 - - µs 17 - - - - 30 µs 17 µs 18 - 18 - 6 30 - - - dB 20 20 - dB 19 Receiver selectivity f0 = 61·5MHz (unmodulated) 60 - Receiver selectivity f0 = 62MHz (modulated) 25 35 Receiver selectivity f0 = 63MHz (modulated) 31 41 - 30 - dB 19 Receiver selectivity f0 = 610MHz (modulated) 40 47 - 40 - dB 19 - - - 250 - dBc 21 V 22 V 22 Receiver spurious rejection performance <1·8GHz RSSI output at 280dBm. See note (i) 0·8 1·4 2·0 0·7 2·5 RSSI output at 238dBm 2·2 2·8 3·3 2·0 3·3 NOTE (i) Additionally measured on Channel 84 for RCR STD-33 Table 7 6 Cont… DE6003 DYNAMIC CHARACTERISTICS (Continued) Characteristic Symbol RSSI delay time Frequency hop time to valid RSSI Frequency hop time to valid RSSI Transmit mode to receive valid RSSI Transmit mode to receive valid RSSI Time to valid RSSI after antenna selection Receiver conducted emissions <1GHz Receiver conducted emissions <1GHz, Chan. 84. See note (i) Receiver conducted emissions >1GHz Power off to receive valid data/RSSI Standby to receive valid data/RSSI Frequency stability 65% at VCC = 5V6 0°C to 55°C Units Note Max. Min. Max. VCC = 1 5V at 25°C Min. Typ. - - - - - t 23 t 23 t 24 t 24 t 26 t 27 t 28 - - 50 70 - - - - 4 5 - - - 4·5 µs 23 - - µs 24 - 80 µs 24 - - µs 25 - 6 µs 25 - - - - 5 µs 26 - 277 257 - 257 dBm 27 - - 257 - - dBm 27 - 256 247 - 247 dBm 27 - - - - 10 ms 28 - - - - 1 ms 29 - - - - ±20 ppm 30 Table 7 (Continued) UNWANTED EMISSIONS The DE6003 has been characterised to meet the RCR STD-33, ETSI ETS 300-328 and FCC15.247 regulatory limits when used correctly and during test the production units are checked for conformity. When the radio is required to comply with FCC 15·247 regulations, the protocol must permit the radio to transmit any one channel for a total time not exceeding 20ms in any 100ms period. For correct use a suitable protocol, timing and timing sequences must be used as indicated in application note AN142. The antennas used will also determine if conformity to the above regulations is possible; effects of both gain and harmonic response must be considered. Substitution by the end user of alternative antennas to those supplied with the equipment should not be possible if FCC regulations are to be complied with. The 2·4GHz ISM band is allocated such that there are strict limits on the amount of radiation allowed outside, but adjacent to, the band. Because the modulated signal is not infinitely small, certain constraints exist in the proximity of the operating channel to the edge of the allocated band. For maximum network throughput, it advisable to arrange that stations do not attempt to use adjacent channels, but to use channels separated by at least 2MHz from any other channel that is in use. NOTE: To comply with the regulations, it is recommended that the following channels are used, allowing ‘guard bands’ at each end of the usable frequency allocation: ETSI and FCC: Channels 01 to 82 (2402 to 2482MHz); RCR: Channels 72 to 95 (2473 to 2495MHz). t6 t2 RX/TX PAOFF t1 RF OUTPUT t20 RADIO MODE RECEIVE TRANSMIT RECEIVE t7 TXD DATA FOR TRANSMISSION RXD VALID DATA VALID DATA t24 RSSI VALID RSSI VALID RSSI PWRLO ANTSEL Fig. 3 Timing control diagram 7 DE6003 SD (6 : 0) LOADB t13 t14 t15 t10 CHANNEL A CHANNEL CHANGING CHANNEL B Fig. 4 Channel strobe timing diagram LOADB CHANNEL B CHANNEL A t2 t10 PAOFF RX/TX t6 TXD DATA DATA t1 Fig. 5 Transmit-channel hop-transmit timing diagram RX/TX = 0) LOADB t10 CHANNEL B CHANNEL A t19 RXD INVALID DATA VALID DATA VALID DATA t 23 RSSI VALID RSSI VALID RSSI Fig. 6 Receive-channel hop-receive timing diagram (RX/TX = 1) LOADB t19 CHANNEL A t2 CHANNEL B t10 PAOFF TXD DATA RXTX RXD INVALID DATA VALID DATA Fig. 7 Transmit-hop-receive timing diagram t16 t16 RXD Fig. 8 Bit period of received data 8 DE6003 Dynamic Characteristics – Notes to Table 7 1. Transmitter Power Output Selectable by control line, to high or low output power setting. Power levels are for any channel into 50Ω and measured at ANT1. Output ripple is measured over 5 channels. 2. Transmitter Power Amplifier Control, PAOFF (t1 ,t 2 and t 6 – see Fig. 3) This control is used in conjunction with the RX/TX. PAOFF is included to allow the power amplifier to be turned on after RX/TX has been set low to transmit (t6, rising to 90% in t 1) and off before being set high to receive (t2). The power amplifier has been designed to switch on and off in this controlled way to avoid generating unwanted emissions which would be caused by simply turning the transmit power on and off. 3. Transmit Times When in transmit mode, the transmit (700 MHz) PLL is opened, preventing the PLL tracking the low frequency components of the transmitted data. This puts a limit on the maximum length of the data block which can be transmitted and places a requirement of a delay between switching to receive mode and transmit mode, in order for the PLL to gain lock. 4. Transmit Delay This is the time to convert the TXD data to the specified frequency (FSK) for transmission. It is specified as the delay from the 50% point of TXD to the output frequency reaching 50% of its deviation. 5. Receive Mode to Valid Transmit Data (t 7 – see Fig. 3) This is the cumulative minimum time taken to: a. switch from receive to transmit mode, b. Transmit to PA on delay (RX/TX to PA switch-on delay that must be allowed between switching from receive to transmit and turning on the PA in order for sufficient energy to be built up in the transmit chain before the PA is switched on), c. Switch on PA and d. Transmit delay 6. Transmitter Modulation (Data onto Carrier) Spectrally shaped Continuous Phase Frequency Shift Keying, spectrum-compliant with FCC 15.247. The DE6003 uses Spread Spectrum communication employing Frequency Hopping with spectrally shaped CPFSK as the modulation format. Spectral shaping is achieved with a Gaussian approximation pre-modulation filter. 90% of the power is within 1MHz bandwidth. 7. Power On to Transmit Time This is the time from VCC being applied to the start of transmission of valid data at the antenna port. This value is very dependent on the power supply used, as all the decoupling capacitors on the DE6003 have to be charged and this energy must be supplied by the power supply. 8. Standby to Transmit (t 9) This is the time from standby to the start of transmission of valid data at the antenna port. 9. Transmitter/Receiver Frequency Agility (t 10 – see Figs. 4,5,6 and 7) The DE6003 is designed to be used in a Frequency Hopping Spread Spectrum Radio System. This requires fast channel switching, which is defined as the time taken from the rising edge of LOADB to the required channel being within 40kHz of the frequency required.The operating channel should not be switched until the output power has fallen to less than 10% after the power amplifier has been switched off when in transmit mode. 10.Transmit/Receive Frequency Select (t 13 , t 14 and t 15 – see Fig. 4) The DE6003 transceiver will operate over 101 channels spaced at 1MHz intervals within the frequency band 2·400 to 2·500GHz. This is selected by setting SD (6:0) to the desired channel number and strobing in the data by pulsing LOADB low. When LOADB is low data ripples through a transparent latch, and is loaded into synthesiser data hold register on the rising edge of LOADB. 11.Receiver Sensitivity A modulated signal of amplitude greater than or equal to the value specified in Table 7 injected at either antenna port will exhibit a Bit Error Rate of no more than 10−5 at 625 kb/s. GPS measure this by applying a signal modulated with a pseudo random DATA stream (215−1)and modulated with an Anritsu MD6420A Transmission analyser , together with a Marconi Instruments 2031 signal source for TXD and a signal shaping filter with the characteristics of the DE6003 transmitter filter. The receive data clock used is the transmit data clock delayed by 400ns to enable centre-bit sampling (optimum sampling). 12.Receiver Max. Input Signal This is defined for all channels as the maximum receiver input signal level for a 10−5 bit error rate. 13. Receiver Data Bit Period (t 16 – see Fig. 8) Data bit period (t16) is the nominal time between each successive data bit.This period is subject to jitter on receive and will be continually changing within the bit period specification. The DE6003 is configured for 625 kb/s and data run length of contiguous ‘0’s or ‘1’s limited to 16 or less; any deviation from this may result in a lowering of sensitivity. The received RXD data stream will meet the bit width restrictions for ‘1’s and ‘0’s as defined in Table 7. This is referenced to the nominal centre of a bit period. Two bit width measurements are used to determine the correct operation of the demodulation circuitry, the first for pseudorandom data and the second to measure the effects of continuous patterns of 16 ‘1’s followed by a single ‘0’ and of 16 ‘0’s followed by a single ‘1’. NOTE: Received data (RXD) is considered valid when these specifications have been met. 9 DE6003 14.Receive Delay (t 18) As measured for 50% of the change of input frequency deviation at either antenna port to the output on the RXD pin (9) of the 40 way connector. 16.Transmit to Valid Received Data (t 20 – see Fig. 3) Transmit to valid received data (t 20) is specified as the time from the rising edge of RX/TX (this assumes that the PA has been instructed to turn off (PAOFF low) and PA fall time allowed to elapse before the rising edge of RX/TX) to data being within the edge jitter requirements. 17.RF Burst to Valid Data (t 21) RF burst to valid data (t 21 ) is specified as the time from the start of a valid RF burst of data to valid data at RXD being within the bit period specification. 18.Time to Valid Data after Antenna Selection (t 22) Time to valid data after antenna selection (t 22) is specified as the time from the change of ANTSEL line to data being within the bit period specification. 19.Channel Rejection (Modulated) The receiver selectivity is the ratio of the interfering signal to wanted signal power levels at which the Bit Error Rate on the wanted signal is degraded to 1025. The wanted signal is applied at 10dB above the measured sensitivity level using a PRBS data pattern. The interferer is modulated by a different PRBS data pattern with the same deviation as the wanted signal.The interferer is then increased in level until the BER as measured on the wanted channel degrades to 1025. This is the rejection to unwanted signals and is measured at 62, 63 and 610 MHz from the selected channel. 20.Channel Selectivity (Unmodulated) Minimum rejection of signals at a frequency offset of 61·5MHz from the wanted signal, as defined in Table 7. 21.Receiver Spurious Rejection Minimum rejection of signals in the bands below 1·8GHz and above 3·3GHz. All spurious responses better than the value defined in Table 7. 22. Receive Signal Strength Indicator (RSSI) The RSSI output should be used for relative measurement purposes only. The output, which is a measure of the second IF energy level, is neither calibrated for a given input signal strength nor to take account of production tolerance variation of the receiver’s gain and losses. Typical RSSI response is shown in Fig. 9. 23.RSSI Delay This is measured for 50% changed input amplitude at either antenna port to the time at which the RSSI output (pin 31 on the 40-way connector) is within 10% of its final value. 24.Frequency Hop Time to Valid RSSI (t 23 – see Fig. 6) This is specified as the delay from the rising edge of 10 3·0 2·5 RSSI (V) 15.Frequency Hop Time to Valid Received Data (t19 – see Figs. 6 and 7) This is specified as the time from the rising edge of LOADB to data being within the bit period specification. (see note 13). 2·0 1·5 1·0 0·5 0 2120 2100 280 260 240 220 0 INPUT SIGNAL (dBm) Fig. 9 Typical RSSI response LOADB to valid RSSI, when the RSSI output is within 10% of its final value. 25.Transmit Mode to Receive Valid RSSI (t 24 – see Fig. 3) This is specified as the delay from the rising edge of RX/TX to valid RSSI, when the RSSI output is within 10% of its final value. 26.Time to Valid RSSI after Antenna Selection (t 26) Time to valid RSSI after antenna selection (t 26 ) is specified as the time from the change of ANTSEL line to the time at which the RSSI output is within 10% of its final value. 27.Receiver Conducted Emissions These are specified as the emissions measured, at either antenna port (terminated with 50Ω), with the transceiver in receive mode. 28.Power Off to Receive Valid Data/RSSI (t 27 ) This is the time from VCC being applied to the reception of valid data being within the edge jitter requirements and when RSSI output is within 10% of its final value. These timing values are very dependent on the power supply used, as all the decoupling capacitors on the DE6003 have to be charged and this energy must be supplied by the power supply. 29.Standby to Receive Valid Data/RSSI (t 28) This is the time from STANDBY going high to the reception of valid data being within the edge jitter requirements to the time at which the RSSI output is within 10% of its final value. 30.Frequency Stability In order to be able to demodulate data in all specified environmental conditions the 10MHz reference oscillator frequency stability is as specified in Table 7. 31.Transmitter In Band Spurious Emissions These are emissions in the transmitter output which are in the frequency range of 2·4 to 2·5GHz. DE6003 MECHANICAL INFORMATION Outline Drawing Please note that outline drawing M50633 A2 with toleranced dimensions is available on request. 12·20 69·85 3·18 4 FIXING HOLES 3·6 DIA. (SEE FIG.12) CONNECTED TO GROUND 1 ANT2 40-WAY CONNECTOR 50·8 44·45 ANT1 29·58 14·87 7·94 63·75 3·18 88·9 5·74 4·8 1·14 MAXIMUM COMPONENT HEIGHT COMPONENT WIRE DIMENSIONS ARE IN MILLIMETRES Fig. 10 DE6003 outline drawing 40-Way Connector The 40-way connector on the DE6003 board is: AMP: AMPMODU 50/50 grid, Part Number 104655-5 The mating receptacle connector is: AMP: AMPMODU 50/50 grid, Part Number 104652-4 The combined mated height of the connector pair is 0.250in (6.35mm). 6mm FIXING AREA 3·6mm 6mm Fig. 11 Permissible fixing area for all 4 holes Antenna Connectors For the interface of each antenna, the connector is: RADIALL-TRANSRADIO, MMS Series surface mount coaxial connector, Part Number R209 406. The mating connector and cable assembly is: RADIALLTRANSRADIO, Part Number A209 080 500 XXX (XXX = the length in mm of the cable) or 3M ELECTRONIC PRODUCTS DIVISION, Part Number 980028-017-XXX (XXX = the length of the cable in inches). The antenna ports are designed for 50V impedance. It is advisable to terminate an unused antenna port with a 50V load, should only one antenna be used. 11 DE6003 HEADQUARTERS OPERATIONS GEC PLESSEY SEMICONDUCTORS Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (01793) 518000 Fax: (01793) 518411 GEC PLESSEY SEMICONDUCTORS P.O. Box 660017 1500 Green Hills Road, Scotts Valley, CA95067-0017 United States of America. Tel (408) 438 2900 Fax: (408) 438 5576 CUSTOMER SERVICE CENTRES ● FRANCE & BENELUX Les Ulis Cedex Tel: (1) 69 18 90 00 Fax : (1) 64 46 06 07 ● GERMANY Munich Tel: (089) 3609 06-0 Fax : (089) 3609 06-55 ● ITALY Milan Tel: (02) 66040867 Fax: (02) 66040993 ● JAPAN Tokyo Tel: (3) 5276-5501 Fax: (3) 5276-5510 ● NORTH AMERICA Scotts Valley, USA Tel: (408) 438 2900 Fax: (408) 438 7023. ● SOUTH EAST ASIA Singapore Tel: (65) 3827708 Fax: (65) 3828872 ● SWEDEN Stockholm Tel: 46 8 702 97 70 Fax: 46 8 640 47 36 ● TAIWAN, ROC Taipei Tel: 886 2 5461260 Fax: 886 2 7190260 ● UK, EIRE, DENMARK, FINLAND & NORWAY Swindon Tel: 01793 518527/518566 Fax : 01793 518582 These are supported by Agents and Distributors in major countries world-wide. © GEC Plessey Semiconductors 1995 Publication No. DS3506 Issue No. 7.3 June 1995 TECHNICAL DOCUMENTATION – NOT FOR RESALE. PRINTED IN UNITED KINGDOM This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company reserves the right to alter without prior notice the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request. 12