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| 型号： | CC2480A1RTC |
| 厂商： | Texas Instruments |
| 文件页数： | 33/48页 |
| 文件大小： | 0K |
| 描述： | IC Z-ACCEL ZIGBEE PROC 48-VQFN |
| 产品培训模块： | RFID Technology and Applications |
| 标准包装： | 260 |
| 系列： | CC2480 |
| 频率： | 2.4GHz |
| 数据传输率 - 最大： | 115kBaud |
| 调制或协议： | 802.15.4 Zigbee |
| 应用： | AMR，ISM，SRD |
| 功率 - 输出： | 0dBm |
| 灵敏度： | -92dBm |
| 电源电压： | 2 V ~ 3.6 V |
| 电流 - 接收： | 27mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 包装： | 托盘 |
| 配用： | EZ430-RFZACC06-ND - EZ430-RFZACC06 296-23357-ND - KIT DEMO FOR CC2480 |
| 其它名称： | 296-23580 |
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CC2480
10.7 Linear IF and AGC Settings
CC2480 is based on a linear IF chain where the
signal amplification is done in an analog VGA
(variable gain amplifier). The gain of the VGA
is digitally controlled.
10.8 Clear Channel Assessment
The clear channel assessment signal is based
The AGC (Automatic Gain Control) loop
ensures that the ADC operates inside its
dynamic range by using an analog/digital
feedback loop.
CSMA-CA functionality specified in [1]. CCA is
on the
measured
RSSI value and
a
valid when the receiver has been enabled for
programmable threshold. The clear channel
assessment function is used to implement the
10.9 VCO and PLL Self-Calibration
at least 8 symbol periods.
10.9.1
VCO
The VCO
is completely
integrated
and
frequencies in the desired band (2400-2483.5
operates at 4800 – 4966 MHz. The VCO
MHz).
frequency
10.9.2
is divided by
PLL self-calibration
2 to generate
The VCO's characteristics will vary with
In order to ensure reliable operation the VCO’s
temperature, changes in supply voltages, and
bias
current
and
tuning
range
are
the desired operating frequency.
automatically calibrated every time the RX
mode or TX mode is enabled.
10.10 Input / Output Matching
The RF input / output is differential ( RF_N and
RF_P ). In addition there is supply switch output
pin ( TXRX_SWITCH ) that must have an
external DC path to RF_N and RF_P .
The RF output and DC bias can be done using
different topologies. Some are shown in Figure
5 on page 21.
Component values are given in Table 19 on
In RX mode the TXRX_SWITCH pin is at
ground and will bias the LNA. In TX mode the
page 22. If a differential antenna
implemented, no balun is required.
is
TXRX_SWITCH pin is at supply rail voltage and
will properly bias the internal PA.
If a single ended output is required (for a
single ended connector or a single ended
antenna), a balun should be used for optimum
performance.
CC2480 Data Sheet SWRS074
Page 33 of 43
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