- 您现在的位置：买卖IC网 > PDF目录18781 > MICRF221AYQS (Micrel Inc)IC RF RECEIVER QWIKRADIO 16-QSOP PDF资料下载
参数资料
| 型号： | MICRF221AYQS |
| 厂商： | Micrel Inc |
| 文件页数： | 16/26页 |
| 文件大小： | 0K |
| 描述： | IC RF RECEIVER QWIKRADIO 16-QSOP |
| 标准包装： | 98 |
| 频率： | 50MHz ~ 950MHz |
| 灵敏度： | -109dBm |
| 数据传输率 - 最大： | 10 kbps |
| 调制或协议： | ASK，OOK |
| 电流 - 接收： | 9.3mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°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 |
| 产品目录页面： | 571 (CN2011-ZH PDF) |
| 其它名称： | 576-3230-5 |
Micrel Inc.
Figure 10. Data Out Pin with No Squelch (SQ = 1)
Figure 11. Data Out Pin with Squelch (SQ = 0)
Other components used include:
C5 is a decoupling capacitor for the Vdd line.
R4 should be referenced to ground when a
microcontroller connection is not made and
kept low by the microcontroller when not
programming the device.
R3 is the reference for the shutdown pin
(SHDN = 0, device is operation), which can
be removed if that pin is connected to a
microcontroller or an external switch.
R1 and R2 form a voltage divider for the AGC pin.
One can purposely decrease the device sensitivity
by forcing a voltage to this AGC pin. Special care
is needed when doing this operation, as an
MICRF221
external control of the AGC voltage may vary from
lot-to-lot and may not work the same for several
devices.
5V Operation
5-volt operation can be obtained by replacing R5, R6,
and R7 (0 ? resistors) to R5 = 150 ? , R6 = R7 = 33
k ? . The 5-volt source must be regulated and
guaranteed never to exceed 5V. DO is equal to VDD
levels.
Four other pins are worthy of comment. They are the
DO, RSSI, SHDN, and SCLK pins.
DO Pin
The DO pin has a driving capability of 0.4mA. This is
good enough for most of the logic families ICs on the
market today. It also works as an input when
programming the device for the serial register control
RSSI Pin
The RSSI pin provides a transfer function of RF signal
intensity versus voltage. It is useful to determine the
signal-to-noise ratio of the RF link, crude range
estimate from the transmitter source and AM
demodulation, which requires a low C AGC capacitor
value.
SCLK Pin
Serial interface input clock is a CMOS Schmitt input.
A 25k ? pull-down is present when device is in
shutdown mode. See “Programming the Device”
section for timing diagram and functional operation
SHDN (Shut Down) Pin
The shut down pin (SHDN) can be used to save
energy. If its level is close to V DD (SHDN = 1), the
device will not be in operation. Its DC current
consumption is less than 1μA (R3 must be removed).
This input pin is designed with a weak pull-up. The
pull-up current is decreased once the input has
switched above the threshold level, that is, the device
is shut down and progressively decreases to levels
below 1 μ A.
When shut down pin is toggling from high to low
(getting out of shut down mode), there is some time
required for the device to come to steady-state mode
and some time needed for data to appear at the DO
pin. The actual time required is dependent upon
several factors, such as temperature, the crystal used
and if the there is an external oscillator coupled
through C2 with faster startup time. Normally
(assuming the suggested crystal vendors are used),
the preamble data will appear at the DO pin at
approximately 1msec time, and 2msec over the
temperature range of the device.
October 2008
16
M9999-100108
(408) 955-1690
相关PDF资料 |
PDF描述 |
|---|---|
| RXM-GPS-SR-B | GPS MODULE SMD SIRF W/ANT |
| RXM-900-HP3-PPO_ | RECEIVER RF 900MHZ 8-CHANNEL |
| RXM-900-HP3-PPS_ | RECEIVER RF 900MHZ 8PAR/120SRLCH |
| RXM-900-HP3-SPO_ | RECEIVER RF 900MHZ 8-CH SMD |
| RXM-GPS-SG-B | GPS MODULE SMD SIRF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MICRF230YQS-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 |
| MICRF230YQS-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:有效 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 |
发布紧急采购，3分钟左右您将得到回复。