CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 95

• Manufacturer Part Number: CMX980AL7
• Description: TETRA Baseband Processor
• Manufacturer: CML Microcircuits

TETRA Baseband Processor
Transmit Parameters
Input bit rate (2 bits per symbol)
Number of Channels
Modulation Type
FIR filter sampling rate
DAC output update rate
DAC resolution
Integral accuracy
Differential accuracy
Signal to noise plus distortion
Offset
Gain matching, I to Q
Phase matching, I to Q
Storage time
I,Q output level (V
Adjacent Channel Power
TETRA Specific Parameters
Gain matching, (I or Q) to ideal Tx
RRC Roll-off coefficient ( )
Adjacent Channel Power
1999 Consumer Microcircuits Limited
at MCLK/384 frequency offset
at MCLK/192 frequency offset
at MCLK/128 frequency offset
at MCLK/96 frequency offset
at MCLK/48 frequency offset
at MCLK/20 frequency offset
(normalised, 0 - 9kHz)
|H(f)| 0 - 5.85kHz
|H(f)| at 9kHz
|H(f)| at 10.05kHz
|H(f)| at 12.15kHz
at 25kHz frequency offset
at 50kHz frequency offset
at 75kHz frequency offset
at 100kHz frequency offset
at 200kHz frequency offset
at 500kHz frequency offset
at 5MHz frequency offset
(V
Parameter
CC
CC
= 3.3V)
= 5.0V)
(without adjustment)
(without adjustment)
95
Notes
1
2
3
4
-30.0
Min.
2.49
-0.1
-2.9
-6.6
3.8
65
MCLK/64
MCLK/256
MCLK/4
/4 DQPSK
± 20.0
Typ.
-104
2.62
0.35
-3.0
-6.8
-70
-78
-80
-88
-90
-92
-72
-80
-82
-90
-93
-95
4.0
0.0
14
70
2
± 40.0
± 0.25
± 0.5
± 0.3
Max.
+0.1
-102
2.75
-3.1
-7.0
-68
-76
-78
-86
-88
-90
-70
-78
-80
-88
-91
-93
4.2
±2
±1
20
-
Symbols
Degrees
CMX980A
Units
D/980A/3
LSB
LSB
Bits
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
bps
mV
Hz
Hz
dB
dB
dB
dB
dB
dB
dB
V
V