PDF CMX983 Data sheet ( Hoja de datos )

Número de pieza	CMX983
Descripción	Analogue Front End
Fabricantes	Consumer Microcircuits Limited
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No Preview Available ! CML Microcircuits COMMUNICATION SEMICONDUCTORS CMX983 Analogue Front End (AFE) for Digital Radio D/983/6 June 2015 Features  Rx channel  Two 16-bit Σ-Δ A/D Converters  Programmable Channel Filter  Tx Channel  Two 14-bit Σ-Δ D/A Converters  Programmable Channel Filter  RF Support  Two 2.1GHz Fractional-N Synthesisers  Auxiliary Functions  10-bit A/D Converter supporting 10 inputs  Five Analogue Comparators  10-bit D/A Converters driving 9 outputs  DSP Interface  C-BUS Control and Configuration Port  Fast Serial Interface for Rx/Tx Data Advance Information  Duplex and Half duplex operation  Direct connection to:  CMX998 Cartesian Loop Transmitter  CMX994 Direct Conversion Receiver  Low power operation  3.3V and 1.8v supplies  Small 64-pin VQFN Package Applications  Software Defined Radio (SDR)  Satellite Communication  Wireless Data Terminals  Digital PMR/LMR Radio  TETRA  DMR  PDT  2015 CML Microsystems Plc 1 page Analogue Front End (AFE) for Digital Radio CMX983 Figure 34 ADC SFDR vs. Input Level .............................................................................. 85 Figure 35 ADC Two Tone Test ........................................................................................ 86 Figure 36 DAC SINAD vs. Input Code Level ................................................................... 87 Figure 37 DAC SFDR vs. Input Code Level..................................................................... 87 Figure 38 PLL1 Output Spectra ....................................................................................... 88 Figure 39 PLL1 Lock Time ............................................................................................... 89 Figure 40 PLL1 Indicated Lock Time vs. Fast Lock Current (965 to 875.525 MHz)........ 89 Figure 41 PLL2 Output Spectra ....................................................................................... 90 Figure 42 PLL2 Lock Time ............................................................................................... 91 Figure 43 PLL2 Indicated Lock Time vs. Fast Lock Current (2125 to 2043 MHz)........... 91 Figure 44 Relative Performance of PLL Options ............................................................. 92 Figure 45 64-lead VQFN Mechanical Outline: Order as part no. CMX983Q1................. 93 It is always recommended that you check for the latest product datasheet version from the Datasheets page of the CML website: [www.cmlmicro.com].  2015 CML Microsystems Plc 5 D/983/6 5 Page Analogue Front End (AFE) for Digital Radio CMX983 Package Q1 Pin Name Pin No. 35 RXCLK 36 TXD 37 TXFS 38 TXCLK 39 IOVSS 40 IOVDD 41 SCLK 42 RDATA 43 CDATA 44 CSN 45 IRQN 46 DVSS 47 DVDD 48 RESETN 49 RF1VDD 50 RF1P 51 RF1N 52 FLCK1 53 CP1 54 CP1VDD 55 CP2VDD 56 CP2 57 FLCK2 58 RF2P 59 RF2N 60 RF2VDD 61 MCLK 62 CALI 63 CALQ 64 VBBUF PAD AVSS Type Signal Description O/P I/P O/P O/P PWR PWR I/P T/S I/P I/P O/P PWR PWR I/P PWR I/P I/P O/P O/P PWR PWR O/P O/P I/P I/P PWR I/P I/P I/P O/P PWR Serial port receive clock Serial port transmit data Serial port transmit frame sync Serial port transmit clock IO driver ground (0V) IO driver power (3.3V) C-BUS serial clock input from the µC C-BUS serial data output (3-state) to the µC C-BUS serial data input from the µC C-BUS chip select input (active low) from the µC C-BUS interrupt request (open drain, active low) to the µC Digital ground (0V) Core power (1.8V) Device reset pin (active low) RF power (1.8V) PLL1 VCO positive input PLL1 VCO negative input PLL1 fast-lock output PLL1 charge pump output PLL1 charge pump input supply PLL2 charge pump input supply PLL2 charge pump output PLL2 fast-lock output PLL2 VCO positive input PLL2 VCO negative input RF power (1.8V) Master clock input I channel test calibration input Q channel test calibration input Buffered mid-rail reference voltage Analogue ground (0V) Signal Definitions Notes: I/P O/P BI = = = Input Output Bidirectional  2015 CML Microsystems Plc 11 D/983/6 11 Page

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Número de pieza	Descripción	Fabricantes
CMX983	Analogue Front End	Consumer Microcircuits Limited

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