Audio Processor
18
MX806A
7.1.3 Operating Characteristics
For the following conditions unless otherwise specified.
= 5.0V @ T = 25ꢆC
V
DD
AMB
Xtal/Clock Frequency = 4.0MHz, Audio Level 0dB ref. = 308mV
@ 1kHz (60% deviation, FM)
RMS
Notes
Min.
Typ.
Max.
Units
Static Values
Supply Current
All Elements Enabled
Maximum Powersave
“C-BUS” Interface
8.0
0.7
15.0
1.5
mA
mA
Input Logic “1”
3.5
V
V
Input Logic “0”
1.5
1.0
7.5
Input Current
-1.0
ꢃA
pF
Input Capacitance
Overall Performance
Microphone Input Level
Discriminator Input Level
Output Drive Level
60% Deviation
100% Deviation
Passband
1, 2
2, 3
25
mV
RMS
154
291
308
326
mV
RMS
2, 4
2, 4, 5
6
308
mV
RMS
1440
MV
P-P
297
-2
3000
0.5
Hz
Passband Ripple
Stopband Attenuation
@ 150Hz
7
dB
6, 8
10
30
12
2
dB
dB
dB
dB
@ 3400Hz
@ 6000Hz
36
60
@ 8000Hz to 20,000Hz
Signal Path Noise
TX
-50
-45
-60
-55
dBp
dB
TX
9
9
RX
dB
RX
dB
Total Harmonic Distortion
RX or TX, 60% Deviation
Circuit Elements – Figure 5
Mic. Amp or Mod. Summation Amp
Open Loop Gain
Bandwidth
1.0
%
50.0
dB
kHz
Mꢂ
20.0
10.0
Input Impedance
Output Impedance
Open Loop
6.0
kꢂ
Closed Loop
600
ꢂ
De-emphasis
Slope
-6.0
0
dB/octave
dB
Gain
Input Impedance
1
Mꢂ
ꢀ1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480064.006
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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CMLMICRO [ CML MICROCIRCUITS ]
