Sub-Audio Signaling Processor
Page 19 of 24
MX805A
6.1.3 Operating Characteristics
For the following conditions unless otherwise specified.
V
= 5.0V @ T = 25°C
DD
AMB
Xtal/Clock Frequency = 4.0MHz, Audio Level 0dB ref. = 308mV
@ 1kHz
RMS
Composite Signal = 308mV
@ 1kHz + 75mV
Noise + 31mV
Sub-Audio signal
RMS
RMS
RMS
Noise Bandwidth = 5kHz Band Limited Gaussian
Notes
Min.
Typ.
Max.
Units
Static Values
Supply Current
All Functions Enabled
All Functions Disabled
Powersave All
5.0
2.0
0.9
7.0
3.0
1.5
mA
mA
mA
Analog Impedances
RX Sub-Audio Input
Audio Input
350.0
350.0
1500.0
kΩ
kΩ
Audio Bypass Switch On
Audio Bypass Switch OFF
RX Amp Input (+ and -)
Comparator Input (+ and -)
RX Sub-Audio Output
TX Sub-Audio Output
Encoder Enabled
Encoder Disabled
Audio Output
5
5
2.0
6.5
6.5
6.5
2.0
kΩ
1.0
1.0
1.0
MΩ
MΩ
MΩ
kΩ
5
5
2.0
500.0
kΩ
kΩ
Encoder Enabled
Encoder Disabled
RX Amp and Comparator Outputs
Large Signal
5
5
2.0
500.0
kΩ
kΩ
6.0
600.0
kΩ
kΩ
Small Signal
Dynamic Values
Digital Interface
Input Logic 1
Input Logic 0
Output Logic 1 (I = -120mA)
Output Logic 1 (I = -360mA)
1
1
2
3
3
1
1
4
3.5
4.6
V
V
V
1.5
OH
0.4
4.0
7.5
1.0
4.0
V
OL
I
Tristate (Logic 1 or 0)
µA
pF
µA
µA
OUT
Input Capacitance
Logic Input Current (V = 0 to 5.0V)
IN
IOX (V
= 5.0V)
OUT
ã2001 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480116.006
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