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Número de pieza CC900
Descripción Single Chip High Performance RF Transceiver
Fabricantes Chipcon 
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SmartRF CC900
CC900
Single Chip High Performance RF Transceiver
Applications
UHF wireless data transmitters and
receivers
Wireless alarm and security systems
868 and 915 MHz ISM/SRD band
systems
Keyless entry with acknowledgement
Remote control systems
Home security and automation
Low power telemetry
Remote metering
Environmental control
Social alarms
Product Description
CC900 is a single-chip high performance
UHF transceiver designed for low-power
and low-voltage wireless applications. The
circuit is mainly intended for the ISM
(Industrial, Scientific and Medical) and
SRD (Short Range Device) frequency
bands at 868 and 915 MHz, but can easily
be programmed for operation at other
frequency bands in the 800-1000 MHz
range.
CC900 is based on Chipcon’s SmartRF
technology.
The main operating parameters of CC900
can be programmed via a serial interface,
thus making CC900 a very flexible and
easy to use transceiver. In a typical system
CC900 will be used together with a
microcontroller and a few external passive
components.
w Features
w Single chip UHF RF transceiver
w Frequency range 800 – 1000 MHz
High sensitivity (typical -110 dBm)
.D Programmable output power up to
4 dBm
aComplies with EN 300 220
tSmall size (SSOP-28 package)
aLow supply voltage (2.7 V to 3.3 V)
SVery few external components required
hNo external RF switch required
eNo external IF filter required
eSingle port antenna connection
FSK modulation with data-rate up to 9.6
kbit/s
Suitable for both narrow and wide band
systems
Radio frequency (RF) programmable in
steps of 250 Hz makes crystal temp-
erature drift compensation possible
Suitable for frequency hopping
protocols
Development kit available
Easy-to-use software for generating the
CC900 configuration data
t4U.comChipcon AS
SmartRFCC900 Datasheet (rev. 2.0) 2003-05-14
Page 1 of 27

1 page




CC900 pdf
SmartRF CC900
Parameter
Min. Typ. Max. Unit Condition
PLL turn-on time, crystal oscillator
off in power down mode
4
ms
PLL turn-on time, crystal oscillator
on in power down mode
2
ms
Digital Inputs/Outputs
Logic "0" input voltage
0
0.3*VDD
V
Logic "1" input voltage
0.7*VDD
VDD
V
Logic "0" output voltage
Logic "1" output voltage
Logic "0" input current
Logic "1" input current
0
2.5
NA
NA
0.4
VDD
-1
1
V Output current -2.5 mA,
3.0 V supply voltage
V Output current 2.5 mA,
3.0 V supply voltage
µA Input signal equals GND
µA Input signal equals VDD
Power Supply
Supply voltage
Current Consumption,
receive mode
Current Consumption,
average in receive mode using
polling
Current Consumption,
transmit mode:
P=0.01 mW (-20 dBm)
P=0.1 mW (-10 dBm)
P=1 mW (0 dBm)
P=2.5 mW (4 dBm)
Current Consumption,
Power Down
3.0 V Recommended operation voltage
2.7 3.3 V Operating limits
21 mA
210 µA 1:100 receive to power down ratio
25 mA The ouput power is delivered to a
50 load
31 mA
54 mA
91 mA
30 µA Oscillator core on
0.2 1 µA Oscillator core off
Chipcon AS
SmartRFCC900 Datasheet (rev. 2.0) 2003-05-14
Page 5 of 27

5 Page





CC900 arduino
SmartRF CC900
Application Circuit
Very few external components are
required for operation of CC900. A typical
application circuit for 869 MHz operation is
shown in figure 7. 9.6 kbps data rate and
20 kHz FSK separation are used. Typical
component values are shown in table 2.
Input / output matching
L51 and C51 are the input match for the
receiver, and L61 is the DC choke for the
transmitter. An internal T/R switch circuitry
makes it possible to connect the input and
output together matching to 50 . See
“Input/output matching” p.13 for details.
Synthesiser loop filter and VCO tank
The PLL loop filter consists of C121-C123
and R121-R123. The component values
are easily calculated using the SmartRF
Studio software.
The VCO tank consists of C91-C93, L91
and the varactor (VAR). C91 determines
the coupling to the internal VCO amplifier,
and thus the VCO loop gain. This loop gain
is also controlled by the ‘VCO gain’ setting
in SmartRF Studio, by changing the
amplifier current. C92 together with the
varactor’s capacitance ratio determines
the VCO sensitivity (MHz/V). The
sensitivity should be 25 MHz/V. L91 and
C93 is used to set the absolute range of
the VCO. See Application Note AN012
“VCO fine-tuning CC400 and CC900” for
more details.
Additional filtering
Additional external components (e.g.
ceramic IF-filter, RF LC or SAW-filter) may
be used in order to improve the
performance for specific applications. See
also “Optional LC filter” p.14 for further
information.
Voltage supply decoupling
C10-C12, C24-C25, C210 and C211 are
voltage supply de-coupling capacitors.
These capacitors should be placed as
close as possible to the voltage supply
pins of CC900. The CC900DB should be
used as a reference design.
C10 C11
Monopole
antenna
LC or SAW
filter
Optional
C93
L91
C92
R123
VAR
C12 C24
L51
L61
C91
R122
R121
C123
AVDD=3V
1
C25 2
3
4
5
C51
6
7
8
9
10
11
12
C122
13
14
C121
AVDD
AGND
AGND
AGND
AGND
RF_IN
RF_OUT
AVDD
AVDD
VCO_IN
AGND
CHP_OUT
AVDD
AVDD
28
IF_OUT
27
IF_IN
26
STROBE
25
PDATA
24
CLOCK
23
DIO
22
DVDD
21
DVDD
20
DGND
19
LOCK
18
DGND
17
AGND
16
XOSC_Q2
15
XOSC_Q1
Optional
455kHz
filter
R7
DVDD=3V
C210 C211
XTAL
C151
C161
Figure 7. Typical CC900 application for 869.000 MHz operation.
Chipcon AS
SmartRFCC900 Datasheet (rev. 2.0) 2003-05-14
Page 11 of 27

11 Page







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