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RF

- Building Blocks

 

 

Applications:

  • Data over radio:
    MSK, FSK, GMSK, QPSK, QAM
  • Wideband modulation systems up to 50MHz
  • Linear and non-linear modulation schemes
  • Wireless telemetry
  • Marine AIS systems
  • Software Defined Radio (SDR)
  • Satellite terminals
  • Digital TV - CATV mod.
  • Wi-Max implementations
  • Analogue, digital and multimode radio:
    TETRA, APCO, dPMR, DMR, PDT

CML's range of Radio Frequency (RF) products provides a selection of modular building blocks for implementation as part or all of the 'wireless front-end' of a wide range of constant and non-constant envelope modulation systems.

The new RF Building Block range is designed to provide flexible, high-performance ICs required for HF/VHF/UHF professional radios, wireless data terminals, wireless microphones and marine and avionics radio systems.

With an operating frequency ranging down to 20MHz and up to 1GHz, the RF products offer: a combination RF transceiver, a separate RF modulator, demodulator and a Cartesian feedback loop transmitter for efficiency and transmitter PA linearisation.

CML's RF devices are designed for use in a wide range of both narrowband and wideband applications, in the wireless data and digital PMR markets.

Product Categories:

RF Bulding Blocks

Receiver

Rx
Product
Description
RF/IF
Range
MHz
I/Q
BW
MHz
Input
IP3
dBm
Noise
Figure
dB
Gain
dB(V/V)
Supply
Voltage
V
Typ.
Current
mA
Package
Type
Key Benefits

CMX970

RF/IF Quadrature Demodulator

20 - 300

10

-15

10

56

3.0 - 3.6

15

16-pin VQFN

Very low power, gain controls and flexible LO driver

CMX972

RF/IF Quadrature Demodulator with PLL

20 - 300

10

-15

10

56

3.0 - 3.6

24

32-pin VQFN

Very low power, gain controls, flexible LO divider, synthesiser with VCO amp

CMX992

RF/IF Quadrature Receiver with IF PLL

100 - 1000

1.4

11

15

61

3.0 - 3.6

52

48-pin VQFN

Dual superhet I/Q architecture, IF filter mux, VGA, flexible LO divider, IF synthesiser with VCO amp

CMX994

Direct Conversion Receiver IC

100 - 940

>1

11

5

49

3.0 - 3.6

56

40pin
VQFN

Very high IIP2 for true-zero IF DCR use, low power, complete LNA to zero-IF receiver path, IF filter, gain controls, flexible LO divider for Tx and Rx synthesiser with VCO amp

CMX994A

Low Power Direct Conversion Receiver IC

100-1000

>1

11

5

49

3.0-3.6

42

40pin VQFN

Very high IIP2 for true-zero IF DCR use, low power, complete LNA to zero-IF receiver path, IF filter, gain controls, flexible LO divider for Tx and Rx synthesiser with VCO amp

CMX994E

High Performance Direct Conversion Receiver IC

100-1000

>1

15

5

49

3.0-3.6

74

40pin VQFN

Very high IIP2 for true-zero IF DCR use, low power, complete LNA to zero-IF receiver path, IF filter, gain controls, flexible LO divider for Tx and Rx synthesiser with VCO amp

Transmitters

Tx
Product
Description
RF/IF
Range
MHz
I/Q
BW
MHz
Output
IP3
dBm
Noise
Floor
dBm/Hz
Output
Power
dBm
Supply
Voltage
V
Typ.
Current
mA
Package
Type
Key Benefits

CMX901

RF Power Amplifier

130 - 950

1W - 2.5W

2.5 - 6

28-pin
WQFN

High gain up to 40dB
Power added efficiency 60% (VHF)

CMX971

RF Quadrature Modulator

20 - 1000

25

11

-150

0
(PEP)

3.0 - 3.6

61

16-pin VQFN

Very low power, excellent untrimmed performance, flexible LO divider

CMX993

RF Quadrature
Modulator

30 -1000

10

25

-155

3
(PEP)

3.0 - 3.6

95

48-pin
VQFN

Amplifiers for analogue scaling and filtering, output gain control, flexible LO divider

CMX993W

RF Quadrature
Modulator

30 - 1000

50

25

-155

3
(PEP)

3.0 - 3.6

96

48-pin VQFN

Amplifiers for analogue scaling and filtering, output gain control, flexible LO divider

CMX998

Cartesian Feedback Loop Transmitter (CFBL)

30 - 1000

0.2

-

-148

3
(PEP)

3.0 - 3.6

135

64-pin VQFN

I/Q modulator-based subsystem greatly linearises external RF PA

Transceivers

Tx/Rx
Product
Description
RF/IF
Range
MHz
I/Q BW
MHz
IP3
dBm

Noise

Supply
Voltage
V
Typ.
Current
mA
Package
Type
Key Benefits

 Tx

 

 

Output

Floor
dBm/Hz

Output Power
dBm

 

 

 

 Rx

 

 

Input

Figure

Gain

 

 

 

CMX973

Low Power RF Quadrature Transceiver

Tx

20 - 1000

25

11

-150

0
(PEP)

3.0 - 3.6

61

32-pin
VQFN

Very low power, small size, excellent performance, flexible LO divider, synthesiser with VCO amp

Rx

20 - 300

10

-15

10

56dB (V/V)

15

CMX991

RF Quadrature Transceiver

Tx

100 -1000

1

-

-142

-10

3.0 - 3.6

82

48-pin VQFN

Small size, dual superhet Rx, two-stage Tx shares Rx IF, flexible LO divider, IF synth with VCO amp

Rx

100 -1000

1.4

11

15

43dB (V/V)

52

CMX979

Dual 'PLL + VCO'

RF - 338MHz – 3.6GHz
IS - 31MHz – 1GHz

2.7 - 3.6

40-pin
VQFN

Two synthesisers in a single package
Wide frequency range

Glossary

APCO - A suite of standards for digital radio communications for use by federal, state/province and local public safety agencies in North America.
CFBL - Cartesian Feedback Loop: The section of a RF control system that uses feedback and self-correction to adjust its operation in-line with the desired signal output.
DCR / DCRx - Direct Conversion Receiver. Where the wanted RF signal is mixed down to a low-IF or zero-IF frequency.
DQPSK - Differential Quadrature Phase Shift Keying: a modulation technique in which the carrier can assume one of four phases, or symbol, represented by 2 bits.
FFSK - Fast Frequency Shift Keying: also known as Minimum Shift Keying (MSK) - A form of frequency modulation.
FSK - Frequency Shift Keying: a form of frequency modulation used to transmit two states of a signal each as separate frequencies.
GFSK - Gaussian Filtered Frequency Shift Keying: an FSK modulation scheme with a Gausian filtered output signal.
GMSK - Gaussian Minimum Shift Keying: a type of FSK that uses pre-modulation Gausian filtering to achieve high data rates in an FM communications channel bandwidth.
Modulation - The process of modulation of a carrier or signal for transmission, also the result of this process.
MSK - Minimum Shift Keying: continuous phase FSK modulation, also known as FFSK..
QAM - Quadrature Amplitude Modulation: a hybrid amplitude/phase modulation technique that requires less bandwidth than normal amplitude or phase modulation techniques.
RF - Radio Frequency: generally accepted to range from about 3k to about 300,000MHz.

 
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