Quadrature Modulator
CMX993/CMX993W
AC Parameters
Notes
14
Min.
Typ.
Max.
Units
Quadrature Modulator
DC Bias Input
-
1.6
1.55
0.5
50
-2
-
V
V
I/Q Input Common Mode Voltage
I/Q Mixer Input Voltage
Modulator Minimum Input Bandwidth
Voltage Gain
1.3
1.7
10
-
-
-
-
-
-
-
-
-
Vp-p
MHz
dB
24, 32
-
Transmit Gain Control Range
Transmit Gain Control Step Size
Gain Switching Time
30
2.5
-
-
dB
-
dB
25
10
-
µs
Transmit Output Power (PEP)
5,6, 20,
32
+3
dBm
Noise Floor
25, 29
-
-
-155
-148
-
dBm/Hz
dBc/Hz
Wideband Noise During Modulation
Output Noise with Attenuation Steps
7, 8, 30
-145
9, 12, 20
Attenuation = 5dB
Attenuation = 10dB
Attenuation = 15dB
Attenuation = 20dB
Attenuation = 25dB
Image Suppression
-
-
-
-
-
-
-
-
-
-
-153
-155
-156
-158
-159
-
dBm/Hz
dBm/Hz
dBm/Hz
dBm/Hz
dBm/Hz
At 30MHz
-
-
32
40
40
32
-40
-
-
-
-
-
-
-
-
dB
dB
At 100MHz
At 500MHz
TBD
TBD
-35
30
-
dB
At 1GHz
dB
Carrier Suppression
Intermodulation
23
11
dBm
dB
Equivalent Output IP3
IS-95 Performance
1st Adjacent Channel (f=885kHz)
2nd Adjacent Channel (f=1.98MHz)
3rd Adjacent Channel (f=2.65MHz)
25
dBm
26
-
-
-
-72
-84
-67
-
-
-
dB
dB
dB
1dB Compression Point
29
21
22
-
-
-
+8
100
-
-
-
dBm
dBc
Load Impedance (Differential)
Discrete Unwanted Emissions (other
than harmonics of the output) in the
Frequency Range 9kHz –12.75 GHz.
-80
Notes:
4. Local oscillator input frequency twice or four times the required operating frequency.
5. Output power reduced dB for dB with forward path attenuation.
6. Peak power: PEP measured with 2-tone signal (two equal amplitude tones).
7. Measured between noise floor and mean power in a two-tone modulated wanted signal.
8. Measured at 400MHz, 5MHz offset over specified Forward Path Output Power range and with
forward path attenuation between 0dB and –5dB. NB: typical noise performance achieved at
typical output power and above.
9. Measured at 400MHz, 5MHz offset with specified Forward Path Output Power for relevant
attenuation level.
2013 CML Microsystems Plc
23
D/993/10
CMLMICRO [ CML MICROCIRCUITS ]
