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| 型号： | MICRF507YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 27/47页 |
| 文件大小： | 0K |
| 描述： | TXRX FSK LOW PWR W/AMP 32MLF |
| 特色产品： | MICRF507 Low-Power FSK Transceiver |
| 标准包装： | 1 |
| 系列： | RadioWire® |
| 频率： | 470MHz ~ 510MHz |
| 数据传输率 - 最大： | 200kbps |
| 调制或协议： | FSK |
| 应用： | AMR，ISM，SRD |
| 功率 - 输出： | 10dBm |
| 灵敏度： | -113dBm |
| 电源电压： | 2 V ~ 2.5 V |
| 电流 - 接收： | 12mA |
| 电流 - 传输： | 21.5mA |
| 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： | 32-VFQFN 裸露焊盘，32-MLF? |
| 包装： | 标准包装 |
| 其它名称： | 576-3694-6 MICRF507YML TRDKR MICRF507YML TRDKR-ND |
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Micrel, Inc.
XCOtune Procedure Example
A procedure such as the algorithm given below can be
called during production (storing the calibrated XCO_tune
value), at regular intervals, or implemented in the
communication protocol when the frequency has changed.
The MICRF507 measures the frequency offset between
the demodulated signal and the LO, and a micro-controller
programs the XCO_tune bits to tune the XCO so the LO
frequency is equal to received carrier frequency.
MICRF507
Registers properly set for reception;
LOOP:
XCO_Step = XCO_Step/2;
If (XCO_Sign == POS) then
// If POS then increase LO frequency:
{XCO_present = XCO_present - XCO_Step}
Else
Procedure description:
A transmitter is assumed to be
// If NEG then decrease LO frequency:
sending a 1010… pattern at the correct frequency and bit
rate. The FEE is enabled (FEEC[1:0] = 11) and the
number P of bit periods used in the measurement is 8 or
16. Only the sign of FEE is used.
;
{XCO_present = XCO_present + XCO_Step}
Objective: The best XCO_tune value (giving the lowest
IFEEI). The desired frequency of the receiver’s PLL is
midway between the “0” and “1” frequencies.
Local variables:
XCO_Present: (5-bit) holds current value in XCO_tune
field
XCO_Step: (4-bit) holds amount by which XCO_tune will
be incremented or decremented
XCO_Sign: (1 bit) has a value of either POS or NEG,
determining respectively whether XCOtune is to be
incremented or decremented (reducing XCOtune
increases LO frequency)
XCO_tune_bits is a buffer, which is written to the XCOtune
field when ProgramRFChip is called.
XCO TUNE PROCEDURE
Initialization:
XCO_Present = 16;
XCO_Step = 16;
XCO_Sign = NEG;
XCO_tune_bits = XCO_Present;
ProgramRFChip;
Wait for > P bit periods;
Read FEE;
If (FEE > 0?) then
{XCO_Sign = POS}
else
{XCO_Sign = NEG} // negative or 0
;
If (XCO_Step > 1) then
{Branch to LOOP}
Else
{If(XCO_Sign == POS) then
{XCO_Present = XCO_Present – 1;
Return (XCO_Present)}; \ done
}
;
October 2, 2013
27
Revision 2.2
相关PDF资料 |
PDF描述 |
|---|---|
| MICRF600DEV1 | KIT DEV RADIOWIRE 902-928MHZ |
| MK01-C | SENSOR REED SPST-NO SMD |
| MK01-H | SENSOR REED SPDT-CHANGE SMD |
| MK02/0-1A66-500W | SENSOR REED SPST-NO |
| MK02/6-0 | SENSOR REED PCB 24MM T/H |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF600 | 功能描述:TXRX ISM 902-928MHZ 11.5X14.1MM RoHS:否 类别:RF/IF 和 RFID >> RF 收发器 系列:RadioWire® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:30 系列:- 频率:4.9GHz ~ 5.9GHz 数据传输率 - 最大:54Mbps 调制或协议:* 应用:* 功率 - 输出:-3dBm 灵敏度:- 电源电压:2.7 V ~ 3.6 V 电流 - 接收:* 电流 - 传输:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 工作温度:-25°C ~ 85°C 封装/外壳:68-TQFN 裸露焊盘 包装:管件 |
| MICRF600 TR | 制造商:Micrel 功能描述:Micrel MICRF600 TR RF Transceivers |
| MICRF600_06 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:902-928MHz ISM Band Transceiver Module |
| MICRF600DEV1 | 功能描述:KIT DEV RADIOWIRE 902-928MHZ RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:RadioWire® 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| MICRF600TR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:902-928MHz ISM Band Transceiver Module |
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