CMX469AE2 CML Microcircuits, CMX469AE2 Datasheet - Page 10

• Manufacturer Part Number: CMX469AE2
• Description: 1200/2400/4800 Baud FFSK Modem
• Manufacturer: CML Microcircuits

1200/2400/4800 Baud FFSK/MSK Modem
Operating Limits
Correct operation of the device outside these limits is not implied.
Note 1: A Xtal frequency of 1.008MHz (1200/2400 baud only) or 4.032MHz is required for correct
operation. A frequency tolerance of ±0.1% is recommended, but ultimately the tolerance selected will
depend upon system requirements.
Operating Characteristics
For the following conditions unless otherwise specified:
Supply (V
Operating Temperature
Xtal Frequency
Static Values
I
I
I
I
I
I
Logic ‘1’ Level
Logic ‘0’ Level
Digital Output Impedance
Analogue and Digital Input Impedance
Tx Output Impedance (V
Dynamic Values
Receiver
Signal Input Dynamic Range SNR = 50dB
Bit Error Rate at SNR = 12dB
Bit Error Rate at SNR = 20dB
Receiver Synchronization at SNR = 12dB
2001 Consumer Microcircuits Limited
DD
DD
DD
DD
DD
DD
V
Xtal/Clock Frequency = 4.032MHz, Bit Rate = 1200 baud, Rx Input Level = 300mVrms.
Rx Enabled, Tx Disabled (V
Rx and Tx Enabled
Rx and Tx Disabled
Rx Enabled, Tx Disabled (V
Rx and Tx Enabled
Rx and Tx Disabled
DD
1200 Baud
2400 Baud
4800 Baud
1200/2400/4800 Baud
probability of bit 16 being correct
= 2.7V at Tamb = 25 C and V
DD
- V
SS
)
DD
= 5.0V)
(V
(V
(V
(V
DD
DD
DD
DD
DD
DD
DD
= 5.0V)
= 5.0V)
= 5.0V)
= 3.0V)
= 3.0V)
= 3.0V)
= 3.0V to 5.5V at Tamb = 40 C to +85 C,
Notes
1
11
Notes
3, 4
4, 5
4, 5
2
2
2
2
2
2
1
1
7
Min.
2.7
-40
4.028
Min.
70%
100
100
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.995
Typ.
<1.0
650
300
230
3.6
4.5
1.5
2.0
4.0
0.6
2.5
1.5
1.5
-
-
-
Max.
5.5
+85
4.036
-
Max.
1000
30%
1.0
-
-
-
-
-
-
-
-
-
-
-
-
-
Units
V
°C
MHz
mVrms
Units
V
V
10
10
10
10
CMX469A
mA
mA
mA
mA
k
k
k
µA
µA
D/469A/2
DD
DD
-4
-3
-3
-8