PDF CC400 Data sheet ( Hoja de datos )

Número de pieza	CC400
Descripción	Single Chip High Performance RF Reansceiver
Fabricantes	Chipcon
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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 0.7VDD 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. 0.3VDD 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

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