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| CMX994 Datasheet, PDF (8/61 Pages) CML Microcircuits – Local Oscillator | |||
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Direct Conversion Receivers
Notes: I/P
=
O/P =
BI
=
Input
Output
Bidirectional
T/S =
NC =
PWR =
CMX994/CMX994A/CMX994E
3-state Output
No Connection
Power
4.1 Signal Definitions
Signal Name
Vmax
AVDD
DVDD
VDDIO
DVSS (GND)
AVSS (GND)
Pins
VCCRF, VCCRXIF, VCCSYNTH,
VCCLO
VCCLNA (see note)
DVDD
VDDIO
DGND
AGND
Usage
The maximum value of the supplies DVDD and AVDD
Power supply for analogue circuits
Power supply for digital circuits
Power supply voltage for digital interface (C-BUS)
Ground for digital circuits
Ground for analogue circuits
Table 1 Definition of Power Supply and Reference Voltages
Note: The LNA has a separate power connection pin to provide isolation of non-differential signals. This may
be connected to a common external supply with suitable de-coupling.
4.2 Connection of Unused Pins
If the CMX994/CMX994A/CMX994E VCO and PLL functions are not used then pins FREF, DO, VCOP1, VCOP2,
VCON1 and VCON2 may be left unconnected.
ï£ 2015 CML Microsystems Plc
Page 8 of 70
D/994_A_E/1
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