MX469D3 データシートの表示（PDF） - MX-COM Inc
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MX469D3 Datasheet PDF : 17 Pages
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1200/2400/4800bps MSK Modem
13
6.1.3 Operating Characteristics
For the following conditions unless otherwise specified.
VDD = 5.0V @ TAMB = 25C
Audio Level 0dB ref. = 300mVRMS, Xtal/Clock Frequency = 4.032MHz
Signal-to-Noise Ratio measured in the Bit-Rate Bandwidth
1200bps BRB = 1200Hz
2400bps BRB = 2400Hz
4800bps BRB = 4800Hz
MX469
Static Values
Supply Current
RX Enabled, TX Disabled
RX and TX Enabled
RX and TX Disabled
Logic ‘1‘ Level
Logic ‘0’ Level
Digital Output Impedance
Analog and Digital Input Impedance
TX Output Impedance
On-Chip Xtal Oscillator
RIN
ROUT
Inverter DC Voltage Gain
Gain Bandwidth Product
Dynamic Values
Receiver
Signal Input Dynamic Range
SNR = 50dB
Bit Error Rate
SNR = 12dB
1200bps
2400bps
4800bps
SNR = 20dB
1200/2400/4800bps
Receiver Synchronization
Probability of Bit 8 Being Correct
Probability of Bit 16 Being Correct
Carrier Detect
Sensitivity
Probability of C.D. Being High
After Bit 8
After Bit 16
0dB Noise
Notes Min. Typ. Max. Units
3.6
mA
4.5
mA
650
µA
1
4.0
V
1
1.0
V
4.0
k
100
k
0.6 1.0
k
10.0
10.0
10.0
10.0
M
k
V/V
MHz
3, 4 100 230 1000 mVRMS
4
4
SNR =12dB 7
5, 10
7, 8
7.0
10-4
2.5
10-4
1.5
10-3
1.5
10-3
1.0
10-8
99
%
99.5
%
150 mVRMS
(1200bps) SNR = 12dB 5, 9
98
%
SNR = 12dB 5, 9
99.5
%
No Signal 9
5
%
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480081.010
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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