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Número de pieza | CC400 | |
Descripción | Single Chip High Performance RF Reansceiver | |
Fabricantes | Chipcon | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CC400 (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
No Preview Available ! SmartRF ® CC400
CC400
Single Chip High Performance RF Transceiver
Applications
• UHF wireless data transmitters and
receivers
• Wireless alarm and security systems
• 315 / 426 / 429 / 433 MHz ISM/SRD
band systems
• Point of sale terminals
Product Description
CC400 is a single-chip high performance,
half-duplex, FSK, UHF transceiver
designed for low power and low-voltage
wireless applications. The circuit is mainly
intended for the ISM (Industrial, Scientific
and Medical) frequency bands at 315, 418
and 433 MHz, but can easily be
programmed for operation at other
frequency bands in the 300 - 500 MHz
range.
The main operating parameters of CC400
can be programmed via a serial interface,
thus making CC400 a very flexible and
easy to use component. In a typical
system CC400 will be used together with a
microcontroller and a few external passive
components.
• Remote control systems
• Home security and automation
• Low power telemetry
• AMR – Automatic Meter Reading
• Environmental control
CC400 is based on Chipcon’s SmartRF®
technology.
Features
• Single chip RF transceiver
• Frequency range 300 – 500 MHz
• High sensitivity (typical -112 dBm)
• Programmable output power up to 25
mW (14 dBm)
• Small size (SSOP-28 package)
• Low supply voltage (2.7 V to 3.3 V)
• Very few external components required
• FSK modulation
• Very low phase noise
• Data-rate up to 9.6 kbit/s
• Suitable for both narrow and wide band
systems
• Suitable for frequency hopping
protocols
• Frequency-Lock indicator
• Development kit available
• Easy-to-use software (SmartRF Studio)
for generating the CC400 configuration
data
Chipcon reserves the right to make changes at any time without notice in order to improve design and supply the best
possible product.
Chipcon AS
SmartRFTM CC400
Datasheet (rev. 3.1) 2003-11-12
Page 1 of 27
1 page SmartRF ® CC400
Parameter
Min. Typ. Max. Unit Condition
Output signal phase noise
RX / TX turn time
PLL turn-on time, crystal oscillator
off in power down mode
PLL turn-on time, crystal oscillator
on in power down mode
Digital Inputs/Outputs
Logic "0" input voltage
Logic "1" input voltage
Logic "0" output voltage
Logic "1" output voltage
Logic "0" input current
Logic "1" input current
0
0.7*VDD
0
2.5
NA
NA
-70
-90
-81
-107
100
4
2
dBc/Hz 10 kHz offset from carrier
dBc/Hz 100 kHz offset from carrier
Loop filter BW = 16 kHz
dBc/Hz 10 kHz offset from carrier
dBc/Hz 100 kHz offset from carrier
Loop filter BW = 3 kHz
µs
ms
ms It is recommended to wait at least
8 ms (6 ms crystal oscillator start-
up time and 2 ms PLL turn-on
time) before checking the PLL
Lock Indicator at the LOCK pin.
Please refer to chapter “PLL Lock
Indicator” on page 16 for a further
description.
0.3*VDD
V
VDD
V
0.4
VDD
-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
1 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=1 mW (0 dBm)
P=10 mW (10 dBm)
P=20 mW (13 dBm)
P=25 mW (14 dBm)
Current Consumption,
Power Down
3.0 V Recommended operation voltage
2.7 3.3 V Operating limits
18 mA
180 µA 1:100 receive to power down ratio
29 mA The output power is delivered to a
50 Ω load
50 mA
62 mA
69 mA
23 µA Oscillator core on
0.2 1 µA Oscillator core off
Chipcon AS
SmartRFTM CC400
Datasheet (rev. 3.1) 2003-11-12
Page 5 of 27
5 Page SmartRF ® CC400
Application Circuit
Very few external components are
required for operation of CC400. A typical
application circuit for 433.92 MHz
operation is shown in figure 7. 1.2 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 and C61 are the output
match for the transmitter. An internal T/R
switch circuitry makes it possible to
connect the input and output together
matching to 50 Ω. 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 20 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 CC400. The CC400DB should be
used as a reference design.
AVDD=3V
1
C24 C25 C10 C11 C12
2
3
Monopole
antenna
LC or SAW
FILTER
Optional
L51 C51
L61 C61
C91
4
5
6
7
8
9
C93 C92
10
11
R123
R122
12
C122
13
L91
R121
14
VAR
C123
C121
AVDD
AGND
AGND
AGND
RF_IN
RF_OUT
AVDD
AVDD
VCO_IN
AGND
AGND
CHP_OUT
AVDD
AVDD
IF_OUT
IF_IN
STROBE
PDATA
CLOCK
DIO
DVDD
DVDD
DGND
LOCK
DGND
AGND
XOSC_Q2
XOSC_Q1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
455kHz
Optional
R7
DVDD=3V
C210 C211
XTAL
C151
C161
Figure 7. Typical CC400 application for 433.92 MHz operation.
Chipcon AS
SmartRFTM CC400
Datasheet (rev. 3.1) 2003-11-12
Page 11 of 27
11 Page |
Páginas | Total 27 Páginas | |
PDF Descargar | [ Datasheet CC400.PDF ] |
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