- 您现在的位置：买卖IC网 > Datasheet目录477 > MICRF507YML TR (Micrel Inc)TXRX FSK LOW PWR W/AMP 32MLF Datasheet资料下载
参数资料
| 型号： | MICRF507YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 16/47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 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页
Micrel, Inc.
Crystal Oscillator (XCO)
The crystal oscillator’s role as the synthesizer reference
demands very good phase and frequency stability. As
shown in Figure 7, the external components required for
the oscillator are a crystal, connected between pins 23
and 24, and loading capacitors.
MICRF507
To achieve 9pF load capacitance required to center
TN4-26011 at 16MHz, set the external capacitors to
1.5pF and XCOtune=16 dec . Figure 8 shows the tuning
range for two different capacitor values, 1.5pF and zero
(external capacitors omitted). External capacitor values
will strongly affect the tuning range. Using 1.5pF with the
above crystal gives a tuning range that is approximately
symmetrical about the center frequency.
Pin 24
XtalOut
C9
1.5pF
Y1
TN4-26011
C8
1.5pF
Pin 23
XtalIn
Figure 7. Crystal Oscillator Circuit
The load capacitance C L seen between the crystal
terminals is:
C L =
1
C 8
1
+
1
C 9
+ C XCOtune + C pin
Figure 8. XCO Tuning with the XCOtune Field
The start-up time of the cystal oscillator, given in Table
Where C XCOtune is the capacitance of the internal
adjustable capacitor bank, and C pin is defined as the
internal chip capacitance when XCOtune bits are all
zeros, plus PCB stray capacitance across pins 23 and
24. The value of C pin is about 6pF. The loading capacitor
values required depend on the total C L specified for the
crystal for oscillation at the desired frequency.
It is possible to tune the crystal oscillator internally by
giving the 5-bit register field XCOtune a non-zero value,
which causes internal capacitors to be switched across
4, is about a millisecond and increases with capacitance.
When the MICRF507’s main mode is switched from
Power down mode to Transmit mode via Standby mode,
or to Receive mode via Standby mode, only the XCO is
energized at first. Current consumption during this
prestart period is approximately 280 μ A (the same as for
Standby mode). After the XCO amplitude is sufficient to
trigger the M-counter and produce two pulses at its
output, the remaining circuits on the chip are powered
on.
the crystal. As this capacitance increases, frequency
decreases. When XCOtune is set to its maximum value
of 31, approximately 4.5pF additional capacitance is
connected across the crystal pins.
The XCO tuning can be used to cancel crystal resonant
frequency error, both initial and with temperature. It can
be used in combination with the Frequency Error
Estimator (FEE). See “FEE” section.
The crystal used is a TN4-26011 from Toyocom.
Specification:
? Package TSX-10A,
XCOtune
0
1
2
4
8
16
31
Start-up Time (μs)
590
590
700
700
810
1140
2050
?
?
?
?
Nominal frequency 16.000000MHz
Frequency tolerance ±10ppm
Frequency stability ±9ppm, load capacitance
9pF
Pulling sensitivity 15ppm/pF
Table 4. Typical Crystal Oscillator Start-up Time
with C8 = C9 = 1.5pF
October 2, 2013
16
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 |
发布紧急采购，3分钟左右您将得到回复。