CC400 Chipcon, CC400 Datasheet - Page 12

• Manufacturer Part Number: CC400
• Description: Single Chip High Performance RF Reansceiver
• Manufacturer: Chipcon

Receiver sensitivity
The receiver sensitivity depends on which
IF frequency and IF filter that has been
selected (60, 200 or 455 kHz). It also
depends on the data rate (0.3 – 9.6 kbps)
and the FSK frequency separation (0 –
In a narrow band system with very low
frequency separation (less than 10 kHz)
the sensitivity will drop. To insure proper
operation the separation should always be
larger than 5 kHz (+/- 2.5 kHz deviation).
For even smaller separation, or to improve
Chipcon AS
Table 3. Sensitivity for different IF frequency, data rates and separation.
Data rate
1.2 kbit/s
2.4 kbit/s
4.8 kbit/s
9.6 kbit/s
Table 2. Bill of materials for the application circuit.
SmartRF
Item
C10
C11
C12
C24
C25
C51
C61
C91
C92
C93
C121
C122
C123
C161
C151
C210
C211
L51
L61
L91
R7
R121
R122
R123
VAR
XTAL
TM
60 kHz
200 kHz
455 kHz ext
60 kHz
200 kHz
455 kHz ext
60 kHz
200 kHz
455 kHz ext
60 kHz
200 kHz
455 kHz ext
CC400
IF frequency
Description
1 nF, X7R, 0603
33 nF, X7R, 0603
4.7 nF, NP0, 1206
33 pF, NP0, 0603
220 pF, NP0, 0603
220 pF, NP0, 0603
12 pF, NP0, 0603
4.7 pF, NP0, 06035
8.2 pF, NP0, 0603
3.9 pF, NP0, 0603
33 nF, X7R, 0603
1.5 nF, X7R, 0603
330 pF, NP0, 0603
15 pF, NP0, 0603
15 pF, NP0, 0603
1 nF, X7R, 0603
33 nF, X7R, 0603
39 nH, 0805
6.8 nH, 0805
10 nH, 0805
10 kΩ, 0603 (optional)
5.6 kΩ, 0603
27 kΩ, 0603
22 kΩ, 0603
KV1832C, TOKO or similar
12 MHz crystal, 12 pF load
Datasheet (rev. 3.1) 2003-11-12
Separation
SmartRF
200 kHz). Frequency separation is twice
the frequency deviation (for example, 20
kHz separation is +/-10 kHz deviation).
Some typical figures are shown in table 3.
the sensitivity, an external narrow band
demodulator
Application Note AN005 “Selecting system
parameters and system configurations
using
information on narrow band systems.
20 kHz
40 kHz
12 kHz
30 kHz
40 kHz
20 kHz
30 kHz
40 kHz
20 kHz
30 kHz
40 kHz
20 kHz
CC400
should
-112 dBm
-107 dBm
-108 dBm
-110 dBm
-105 dBm
-103 dBm
-107 dBm
-104 dBm
-100 dBm
-105 dBm
-102 dBm
CC400
-97 dBm
/
®
CC900”
be
CC400
used.
Page 12 of 27
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