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参数资料
| 型号： | MICRF219AAYQS |
| 厂商： | Micrel Inc |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC RECEIVER QWIKRADIO 16QSOP |
| 标准包装： | 98 |
| 频率： | 300MHz ~ 450MHz |
| 灵敏度： | -112.5dBm |
| 调制或协议： | ASK，OOK |
| 应用： | 通用 |
| 电流 - 接收： | 4.3mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 配有 RSSI |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
| 其它名称： | 576-3899-5 |
Micrel, Inc.
MICRF219A
D8
0
0
1
1
D7
0
1
0
1
Set number of consecutive valid
bits before releasing DO
0 bit - default
4
8
16
D6
0
1
D5
1
0
Set slice level
Slice Level 30%
Slice Level 40%
Figure 7. Serial Interface Start Sequence
Bits are serially programmed starting with the most
significant bit (MSB = D19) if all bits are being
1
0
1
0
Slice Level 50%
Slice Level 60%
- default
programmed until the least significant bit (LSB =D0) For
instance, if only the desense bits D0, D1, and D2 are
being programmed, then these are the only bits that
need to be programmed with the start sequence, D2, D1,
D4
0
0
1
D3
0
1
0
Demod Bandwidth (at 433.92MHz)
1625Hz
3250Hz
6500Hz
D0, plus the stop sequence. Or, if only the squelch bit
D17 is needed, then the sequence must be from start
sequence, D17 through D0 plus the stop sequence,
making sure the other bits (besides D17) are
programmed as needed. It is recommended that all
1
1
13000Hz
- default
parallel input pins (SEL0, SEL1, and SQ) be kept high
when using the serial interface. After the programming
D0 D1 D2 Desense*
0 X X No Desense - default
1 0 0 6dB Desense
1 1 0 16dB Desense
1 0 1 30dB Desense
1 1 1 42dB Desense
* In desense mode, a fixed gain control voltage is applied to the mixer
and variable gain amplifier, and the automatic gain adjustment loop is
disabled.
Programming the device is accomplished by the use of
pins DO and SCLK. Normally, DO (Pin 10) is outputting
data and needs to switch to an input pin made by the
start sequence, as shown at Figure 7.
bits are finished, a stop sequence (as shown in Figure 8)
is required to end the mode and re-establish the DO pin
as an output again. To do so, the SCLK pin is kept high
while the DO pin changes from low to high, then low
again, followed by the SCLK pin made low. Timing of the
programming bits are not critical, but should be kept as
shown below:
T1 < 0.1 us, Time from SCLK to convert DO to
input pin
T6 > 0.1 us, SCLK high time
T7 > 0.1 us, SCLK low time
T2, T3, T4, T5, T8, T9, T10 > 0.1 us
High at the SCLK pin tri-states the DO pin, enabling the
external drive into the DO pin with an initial low level.
The start sequence is completed by taking SCLK low,
then high while DO is low, followed by taking DO high,
then low while SCLK is high. The serial interface is
initialized and ready to receive the programming data.
SCLK frequency should be greater than 5KHz to avoid
automatic reset from internal circuitry.
Figure 8. Serial Interface Stop Sequence
July 2011
14
M9999-071811-A
RadioTech@micrel.com or (408) 944-0800
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF219AAYQS TR | 功能描述:射频接收器 300MHz to 450MHz, 3.0V to 3.6V, 6mA, <10kbps, ASK Receiver with Auto-Poll, RSSI and Squelch (Recommended for New Designs) RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MICRF219AAYQS-TR | 功能描述:- RF Receiver ASK, OOK 300MHz ~ 450MHz -112.5dBm PCB, Surface Mount 16-QSOP 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 频率:300MHz ~ 450MHz 灵敏度:-112.5dBm 数据速率（最大值）:- 调制或协议:ASK，OOK 应用:通用 电流 - 接收:4.3mA 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特性:配有 RSSI 电压 - 电源:3 V ~ 3.6 V 工作温度:-40°C ~ 105°C 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 供应商器件封装:16-QSOP 标准包装:1 |
| MICRF219AYQS | 功能描述:射频接收器 QwikRadio Receiver (Not Recommended for New Designs) RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MICRF219AYQS TR | 功能描述:射频接收器 QwikRadio Receiver (Not Recommended for New Designs) RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MICRF220 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:300MHz to 450MHz, 3.3V ASK/OOK Receiver with RSSI and Squelch |
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