CMX994 Datasheet, PDF (3/61 Pages) CML Microcircuits – Local Oscillator

Direct Conversion Receivers
CMX994/CMX994A/CMX994E
7.8.1
7.8.2
7.9
7.9.1
7.9.2
PLL R Divider - $24 - $23 – 8-bit write only.....................................................................................................34
PLL R Divider - $D4-$D3 – 8-bit read only.......................................................................................................34
VCO Control Register ......................................................................................................................................35
VCO Control - $25 - 8-bit write only................................................................................................................35
VCO Control - $D5 - 8-bit read only ................................................................................................................35
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.1.7
8.1.8
8.1.9
8.1.10
8.2
8.3
8.4
Application Notes .................................................................................................................................... 36
Typical Receiver Performance ........................................................................................................................36
System Performance.......................................................................................................................................36
DC Offsets .......................................................................................................................................................37
Gain Control....................................................................................................................................................38
LNA Intermodulation Optimisation ................................................................................................................41
Low Power Mode............................................................................................................................................42
I/Q Filter Response .........................................................................................................................................42
Baseband Intermodulation .............................................................................................................................43
LO Pulling ........................................................................................................................................................43
Rx Mixer Output (Broadband Operation) .......................................................................................................44
Spurious Responses ........................................................................................................................................45
Operation Below 100MHz...............................................................................................................................46
Transmitter LO Output....................................................................................................................................46
Modem Solutions............................................................................................................................................48
9
9.1
9.1.1
9.1.2
9.2.1
9.3
Performance Specification....................................................................................................................... 50
Electrical Performance....................................................................................................................................50
Absolute Maximum Ratings ............................................................................................................................50
Operating Limits..............................................................................................................................................50
Operating Characteristics ...............................................................................................................................51
AC Parameters – Direct Conversion Receiver Sections....................................................................................54
AC Parameters – Tx Output.............................................................................................................................58
AC Parameters – C-BUS...................................................................................................................................59
Packaging ........................................................................................................................................................60
 2015 CML Microsystems Plc
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