CMX994 Datasheet, PDF (54/61 Pages) CML Microcircuits – Local Oscillator

Direct Conversion Receivers
CMX994/CMX994A/CMX994E
AC Parameters – Direct Conversion Receiver Sections (CMX994, CMX994A, CMX994E in normal mixer intermod
mode)
I/Q Demodulator
Notes
Min.
Typ.
Max.
Units
(combined performance of receiver sections,
excluding LNA)
Gain
450MHz
–
49
–
dB(V/V)
940MHz
–
49
–
dB(V/V)
Noise Figure
450MHz
–
14.5
–
dB
940MHz
–
16
–
dB
Third Order Intercept Point (Input)
450MHz
–
11
–
dBm
940MHz
–
9.5
–
dBm
Second Order Intercept Point (Input)
100MHz to 600MHz
25
–
79
–
dBm
600MHz to 940MHz
25a
–
73
–
dBm
1dB Compression Point (Input)
24, 24a
–
0
–
dBm
Image Rejection (I/Q Gain/Phase Matching)
LO Phase Correction On (CMX994 always On)
30
40
–
dB
LO Phase Correction Off (CMX994/CMX994E)
24
25
–
–
dB
I/Q Amplitude Balance
LO Phase Correction On (CMX994 always On)
–
 0.03
 0.15
dB
LO Phase Correction Off (CMX994/CMX994E)
24
–
 0.1
–
dB
I/Q Phase Balance
LO Phase Correction On (CMX994 always On)
–
 0.5
 2.0
deg.
LO Phase Correction Off (CMX994/CMX994E)
24
–
1
3
deg.
I/Q DC Offset Correction Steps
22
17
25
33
mV
I/Q DC Offset at Maximum Attenuation
20a
–
15
55
mV
I/Q Output Bandwidth
23
–
–
1.6
MHz
LO Divider Ratios (selectable)
–
2, 4 or 6
–
I/Q Differential Output Voltage Swing
20
–
–
4.0
Vp-p
Blocking
21
93
96
–
dB
AC Parameters – Direct Conversion Receiver Sections (CMX994E register $15, b7 set to ‘1’ (enhanced mixer
intermodulation mode)
I/Q Demodulator (CMX994E)
Notes
Min.
Typ.
Max.
Units
(combined performance of receiver sections, excluding LNA)
Gain
450MHz
–
49
–
dB(V/V)
1000MHz
–
49
–
dB(V/V)
Noise Figure
100MHz
–
14.5
–
dB
450MHz
–
15
–
dB
870MHz
–
16
–
dB
 2015 CML Microsystems Plc
Page 54 of 70
D/994_A_E/1