CMX469AE2 CML Microcircuits, CMX469AE2 Datasheet - Page 6

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

1200/2400/4800 Baud FFSK/MSK Modem
1.4
Notes:
1. V
2. The performance of the Carrier Detect function will be affected by the nature of the noise spectrum in the
3. A 4.032MHz Xtal/clock is required for 4800 Baud operation.
2001 Consumer Microcircuits Limited
pin. For input signals referenced to V
received channel. The value of C4 determines the Carrier Detect Time Constant. A long time constant
results in improved noise immunity but increased response time. C4 may be varied to trade-off response
time for noise immunity.
BIAS
External Components
may be decoupled to V
Figure 2 Recommended External Components
SS
and V
Component
DD
SS
, decouple V
using C2 and C6 when input signals are referenced to the V
R1
C1
C2
C3
C4
C5
C6
C7
X1
7
BIAS
1.008MHz
4.032MHz
to V
33.0pF
33.0pF
1.0M
Value
1.0µF
0.1µF
0.1µF
1.0µF
1.0µF
or
SS
using C2 only.
CMX469A
D/469A/2
BIAS