Audio Band Scrambler
FX/MX128
Operating Characteristics
For the following conditions unless otherwise specified:
V
DD
= 3.3V at T
AMB
= 25°C
Clock Frequency = 10.24MHz
Audio Level 0dB ref. at 1kHz = (V
DD
-1) x 150mV
RMS
e.g. V
DD
= 3.3V 0dB = 345mV
RMS.
Notes
Static Values
Supply Current
Input Impedance
Digital
Amplifiers
Output Impedance (RXOUT, TXOUT)
Input Logic 1 Voltage
Input Logic 0 Voltage
Dynamic Values
General
Analogue Signal Input Levels
Analogue Output Noise
Clear Mode
Passband -3dB Cutoff Frequencies
Low
High
Passband Ripple (300-3000Hz)
Rx Channel
Tx Channel
Passband Ripple (500-2750Hz)
Rx Channel
Tx Channel
Filter Attenuation at 3.3 kHz
Rx and Tx Channel
Filter Attenuation at 3.6 kHz
Rx and Tx Channel
—
30
—
dB
—
3000
—
—
300
—
Hz
Hz
4
-16.0
—
—
2.5
3
5.0
dB
mV
RMS
1
1
2
2
100
1.0
—
70%
—
—
10.0
1.0
—
—
—
—
—
—
30%
kΩ
MΩ
kΩ
V
DD
V
DD
—
2.0
3.0
mA
Min.
Typ.
Max
Units
0
0
—
—
3.6
2.9
dB
dB
0
0
—
—
2.2
2.0
dB
dB
—
45
—
dB
©
2003 CML Microsystems Plc
8
D/128/2
CMLMICRO [ CML MICROCIRCUITS ]
