CMX983Q1
Product Description
The CMX983 is an Analogue Front End (AFE) IC that bridges the gap between a digital radios RF section and the DSP. Specifically designed to meet the needs of a Software Defined Radio (SDR), the CMX983 performs critical DSP-intensive functions, provides dual channel analogue to digital and digital to analogue conversion, includes two RF fractional-N synthesisers, and embeds a host of auxiliary ADCs and DACs for use within the radio system.
The CMX983 meets the low operating power requirements of SDR terminals and is powered from separate 3.3V and 1.8V power supplies. A facility is provided to allow the synthesiser charge pumps to be operated at up to 5V, providing low noise operation. The device is available in a small 64-lead VQFN (Q1) package.
Features
- Rx channel - Two 16-bit - ADCs - Programmable Channel Filter
- Tx Channel - Two 14-bit - DACs - Programmable Channel Filte
- RF Support - Two 2.1GHz Fractional-N Synthesisers
- RF Support - Two 2.1GHz Fractional-N Synthesisers
- Auxiliary Functions - 10-bit ADC supporting 10 inputs - Five Analogue Comparators - 10-bit DACs driving 9 outputs
- DSP Interface - C-BUS Control and Configuration Port - Fast Serial Interface for Rx/Tx Data
- Duplex and Half duplex operation
- Narrow bandwidth and wide bandwidth operating modes
- 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
| Voltage: | Multiple Separate Blocks: 1.7 to 1.9 VDC, 3.0 to 3.6 VDC, 3.0 to 5.25 VDC |
|---|---|
| Form factor: | 64-pin VQFN |
| Temperature: | -40 to +85 °C |
| Dimensions: | 9.0 x 9.0 x 0.9mm |
| Packaging: | Tray |
| Reference Frequency Input: | 5 to 30 MHz |
| On-Chip PLL: | yes |
| On-chip VCO: | yes |
| Input Bandwidth: | 50kHz |
| C-BUS (SPI) Control Interface: | yes |
| On-chip Analog to Digital Converters: | 2 - Rx Channel 10 - Aux |
| On-chip Digital to Analog Converters: | 2 - Tx Channel 10 - Aux |