FX829D2 CMLMICRO [CML Microcircuits], FX829D2 Datasheet - Page 7

• Manufacturer Part Number: FX829D2
• Description: Baseband Signal Processor
• Manufacturer: CMLMICRO [CML Microcircuits]

Baseband Signal Processor
1.4
1997 Consumer Microcircuits Limited
External Components
C1
C2
C3
C4
C5
C6
C7
C8
C9
Notes:
22pF
22pF
68pF
0.1µF
0.1µF
100pF
0.1µF
Note 2
5.6nF
1. R2, R3, R4 and C3 form the gain components for the Summing Amplifier (AMP2).
2. R5, R6, C6 and C8 form the gain components for the Rx Input Amplifier (AMP1).
R2 and R3 should be chosen as required from the system specification, using the
following formulae:
R6 should be chosen as required by the signal level, using the following formula:
C8 x R6 should be chosen so as not to compromise the low frequency performance of
this product.
±20%
±20%
±20%
±20%
±10%
±20%
±20%
±20%
±20%
Figure 2 Recommended External Components
Audio Gain =
DTMF Gain =
Gain
R1
R2
R3
R4
R5
R6
R7
1M W
Note 1
Note 1
100k W
100k W
Note 2
22k W
=
7
R4
R3
R4
R2
R5
R6
±5%
±10%
±10%
±10%
±10%
±10%
±10%
X1
4.032MHz
±100ppm
D/829/4
FX829