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| 型号： | MICRF221AYQS TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC RF RECEIVER QWIKRADIO 16-QSOP |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
MICRF221
3.3V, QwikRadio ? 850 MHz to 950 MHz Receiver
General Description
Features
The MICRF221 is a third generation QwikRadio
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receiver, offering all the benefits of Micrel's earlier
QwikRadio ? products with significant improvements,
including: enhanced sensitivity, automatic duty-cycle
feature and RSSI output.
The MICRF221, Figure 1, is a super-heterodyne
receiver, designed for OOK and ASK modulation. The
down-conversion mixer also provides image rejection.
The MICRF221 receiver provides a SLEEP Mode for
duty-cycle operation and an enhanced, customer
programmable "WAKE" function. These features are
further combined into a wholly integrated "self-polling"
scheme that is ideal for low and ultra-low power
applications, such as RKE and RFID
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Complete Receiver on a Chip
-109dBm sensitivity, 1 kbps and BER 10E-02
Image Rejection Mixer
850 MHz to 950 MHz frequency range
Low Power, 9mA @ 868 MHz, continuous on
Data Rates to 10kbps (Manchester Encoded)
Auto polling (sleep mode, current < 0.1 mA)
Analog RSSI Output
Programmable “Low Sensitivity” mode
No IF filter required
Excellent selectivity and noise rejection
Low external part count
All post-detection data filtering is provided on the
MICRF221 receiver. Any one of four filter bandwidths
may be selected externally by the user in binary steps,
from 1.25 kHz to 10 kHz. The user needs only to
program the device with a set of easily determined
values based on data rate, code modulation format, and
? Additional Functions Programmed through serial
interface
Ordering Information
Part Number Temperature Range Package
desired duty-cycle operation.
MICRF221AYQS
–40° to +105°C
16-Pin QSOP
Typical Application
Figure 1: MICRF221 Receiver 915.0 MHz, 1kHz Baud Rate Example
QwikRadio is a registered trademark of Micrel, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
October 2008
M9999-100108
(408) 955-1690
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| 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 |
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