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参数资料
| 型号： | MICRF220AYQS TR |
| 厂商： | Micrel Inc |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | RCVR ASK/OOK 300-450MHZ 16QSOP |
| 标准包装： | 2,500 |
| 系列： | QwikRadio® |
| 频率： | 300MHz ~ 450MHz |
| 灵敏度： | -112.5dBm |
| 数据传输率 - 最大： | 20kbps |
| 调制或协议： | ASK，OOK |
| 应用： | 通用 |
| 电流 - 接收： | 6mA |
| 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： | 带卷 (TR) |
Micrel, Inc.
RO2
MICRF220
C
R
V BIAS
RO1
C
Figure 5. Reference Oscillator Circuit
Reference oscillator crystal frequency can be calculated
according to Equation 3. For example, if f RF = 433.92MHz,
f REF = 13.52313MHz. Table 4 lists the values of reference
frequencies at different popular RF frequencies. To
operate the MICRF220 with minimum offset, use proper
loading capacitance recommended by the crystal
manufacturer.
Figure 6. Data Out Pin with No Squelch (V SQ = V DD )
RF Input Frequency (MHz)
315.0
390.0
418.0
433.92
Reference Frequency (MHz)
9.81713*
12.15446
13.02708
13.52313*
When squelch function is enabled by tying the SQ pin low,
the chip will monitor incoming pulse width before allowing
activity on DO pin. The pulse width is set by SEL1 and
SEL0 pins as shown in Table 5, and is inversely
proportional to frequency. When there is no input signal
and squelch is not enabled (SQ pin left floating), voltage on
DO chatters due to random noise as shown in Figure 6. If
*Empirically derived, slightly different from Equation 3.
Table 4. Reference Frequency Examples
SQ pin is tied low, the activity on DO pin is much reduced
as shown in Figure 7.
Squelch Operation
When squelch function is enabled by tying the SQ pin low,
the chip will monitor incoming pulse width before allowing
activity on DO pin. The pulse width is set by SEL1 and
SEL0 pins as shown in Table 5, and is inversely
proportional to frequency. When there is no input signal
and squelch is not enabled (SQ pin left floating), voltage on
DO chatters due to random noise as shown in Figure 6. If
SQ pin is tied low, the activity on DO pin is much reduced
as shown in Figure 7.
Figure 7. Data Out Pin with Squelch (V SQ = 0V)
August 2010
11
M9999-082610-A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF221 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.3V, QwikRadio 850 MHz to 950 MHz Receiver |
| MICRF221AYQS | 功能描述:射频接收器 850MHz to 950MHz, 3.0V to 3.6V, 9mA, 10kbps ASK Recdeiver with Auto-Poll and RSSI, Shutdown in 16-lead QSOP 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 |
| MICRF221AYQS TR | 功能描述:射频接收器 850MHz to 950MHz, 3.0V to 3.6V, 9mA, 10kbps ASK Recdeiver with Auto-Poll and RSSI, Shutdown in 16-lead QSOP 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 |
| MICRF229YQS-T5 | 功能描述:- RF Receiver ISM 433.92MHz -112dBm 20kbps On-Board, Trace 16-QSOP 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 频率:433.92MHz 灵敏度:-112dBm 数据速率（最大值）:20kbps 调制或协议:ISM 应用:通用 电流 - 接收:6mA 数据接口:- 存储容量:- 天线连接器:板载，跟踪 特性:- 电压 - 电源:3.5 V ~ 5.5 V 工作温度:-40°C ~ 105°C 封装/外壳:16-LSSOP（0.154"，3.90mm 宽） 供应商器件封装:16-QSOP 标准包装:1 |
| MICRF229YQS-TR | 功能描述:- RF Receiver ISM 433.92MHz -112dBm 20kbps On-Board, Trace 16-QSOP 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 频率:433.92MHz 灵敏度:-112dBm 数据速率（最大值）:20kbps 调制或协议:ISM 应用:通用 电流 - 接收:6mA 数据接口:- 存储容量:- 天线连接器:板载，跟踪 特性:- 电压 - 电源:3.5 V ~ 5.5 V 工作温度:-40°C ~ 105°C 封装/外壳:16-LSSOP（0.154"，3.90mm 宽） 供应商器件封装:16-QSOP 标准包装:1 |
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