As a key founding member of the dPMR association and a member of ETSI, CML Microcircuits (CML) participates in the development of digital radio standards with continuous innovative design, manufacture and supply of high performance and low-power analogue, digital and mixed signal semiconductors for telecommunications worldwide.
CML Microcircuits
dPMR Product Showcase
CMX7241/CMX7341 – Advanced PMR/LMR Digital Common Platform Processors
The CMX7241/CMX7341 provides a common platform to support digital and analogue FDMA and 2-slot TDMA PMR/LMR.
Based on CML’s FirmASIC® component technology, a Function Image™ (FI) upload determines the CMX7241/CMX7341 overall function and operating characteristics. The CMX7241 and CMX7341 provide the same system functionality and can accept the same FI but are targeted at different system implementations:
- CMX7241 is pin compatible with the CMX7141 enabling a smooth forward evolution
- CMX7341 has a differential I/Q Rx interface for optimum performance and direct connection to CML’s CMX994A/E Direct Conversion Receiver ( DCRx) ICs
The combination of CMX7341 and CMX994A/E ICs enables a small, low cost, low power consumption multi-standard PMR/LMR system to be realised.
You can find more information and the full technical details on CML's website.
Website Link Product Data Sheet >
CMX994/994A/994E/994G – RF Direct Conversion Receiver ICs
The CMX994, CMX994A, CMX994E, CMX994G is a family of direct conversion receiver ICs with PowerTrade™; the ability to dynamically select power against performance modes to optimise operating trade-offs.
- CMX994 – Standard and low power modes
- CMX994A – Standard and low power modes
- CMX994E – Enhanced, standard and low power modes
- CMX994G – Enhanced, standard and low power modes, 30MHz guaranteed performance
The CMX994/A/E/G offer exceptional blocking performance, typical values are in the range 98dB to 102dB depending on the measurement method. All three devices include a broadband LNA with gain control followed by a high dynamic range, very high IIP2, I/Q demodulator. The receiver baseband section includes amplifiers and precise, configurable bandwidth, baseband filter stages. LO generation is provided by an integer-N PLL and a VCO negative resistance amplifier; an external LO may also be used. LO dividers are provided for flexible multi-band operation.
The CMX994/A/E/G operates from a single 3.3V supply over a temperature range of –40°C to +85°C and are available in a small 40-pin VQFN (Q4) package.
You can find more information and the full technical details on CML's website.
Website Link Product Data Sheet >
CMX618/638 – RALCWI Vocoder IC’s
As a members of the CML DuraTALK family of digital voice products, the CMX618/CMX638 are flexible, high integration, high performance, RALCWI Vocoder, offering near toll-quality voice at very low bit rates.
- CMX618: Half-duplex RALCWI Vocoder with Integrated Voice Codec
- CMX638: Full-duplex RALCWI Vocoder with Integrated Voice Codec
A Forward Error Correction (FEC) engine provides optimum performance in real life applications. The RALCWI Vocoder comprises four independent functions which are selectable by the host: Voice Encoder, FEC Encoder, Voice Decoder and FEC Decoder.
The CMX618 includes an integrated voice CODEC, offering a complete analogue voice to low bit rate vocoded data function, with integrated channel filters, which removes the need for external components. Both devices operate from a dual power supply (1.8V and 3.3V) and are available in both 48-pin LQFP (L4) and 48-pin VQFN (Q3) packages.
You can find more information and the full technical details on CML's website.
Website Link Product Data Sheet >
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