AT86RF211SAH

更新时间： 2024-01-20 08:30:24

品牌	Logo	应用领域
爱特美尔 - ATMEL		电信集成电路电信电路 ISM频段异步传输模式无线 ATM
页数	文件大小	规格书
48页	556K
描述
RF and Baseband Circuit, CMOS, PQFP48, TQFP-48

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技术参数
数据手册

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AT86RF211SAH 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	QFN	包装说明：	QCCN, QFP48,.35SQ,20
针数：	32	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.07
JESD-30 代码：	S-PQCC-N32	JESD-609代码：	e3
长度：	7 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	32
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCN
封装等效代码：	QFP48,.35SQ,20	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	2.7 V	认证状态：	Not Qualified
座面最大高度：	1.6 mm	子类别：	Other Telecom ICs
标称供电电压：	2.7 V	表面贴装：	YES
技术：	CMOS	电信集成电路类型：	RF AND BASEBAND CIRCUIT
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn) - annealed
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7 mm	Base Number Matches：	1

AT86RF211SAH 数据手册

Overview and Choice of

Intermediate Frequencies

For selectivity and flexibility purpose, a classical and robust 2 IF superheterodyne archi-

tecture has been selected for the AT86RF211. In order to minimize the external

components cost, the most popular IF values have been chosen. The impedances of the

input/output of the mixing stages have been internally matched to the most usual

ceramic filter impedances.

Two typical IF values are suggested:

•

10.7 MHz is the most popular option.

21.4 MHz: the image frequency is far enough from the carrier frequency to enable

the use of a front-end ceramic filter instead of a SAW filter. It is also noticeable that

21.4 MHz quartz filters usually have more abrupt slopes than 10.7 MHz ceramic

filters.

Rx - Tx Switch

A SPST switch is integrated. In the transmission mode, it protects the LNA input from

the large voltage swings of the PA output (up to several volts peak-to-peak), which is

switched to a high impedance state. It is automatically turned ON or OFF by the RX/TX

control bit. The insertion loss is about 2 dB and the reverse isolation about 30 dB in a

300Ω environment.

Image Rejection and RF Filter The immunity of the AT86RF211 can be improved with an external band-pass filter.

For example, when using a SAW Filter, this device must be matched with the LNA input

and the switch output. The following scheme gives the typical implementation for an

868 MHz application with a 50Ω/50Ω SAW filter.

Figure 9. Typical 50Ω SAW Filter Implementation in the 868 MHz Band

These inductors can be printed

2.2 nH

12 nH

SWOUT (pin 48)

SPST Switch

RXIN

(pin 45)

SAW

50Ω

See Table 2 for precise matching information.

The SAW filter can be replaced by a TEM ceramic, helicoidal or a ceramic coax λ/4 res-

onator designed as a narrow band-pass filter. For instance, with an IF selected at

10.7 MHz, a -3 dB bandwidth of 5 MHz, with an insertion loss of 1 dB and an image

rejection of 12 dB can be achieved with the following:

AT86RF211

1942C–WIRE–06/02

1...7 8 91011 12 13...48

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与AT86RF211SAH相关器件

型号	品牌	描述	获取价格	数据表
AT86RF211SAH-R	ATMEL	RF and Baseband Circuit, CMOS, PQFP48, TQFP-48	获取价格
AT86RF211SAHW	ATMEL	Telecom IC, CMOS, PQFP48	获取价格
AT86RF211SAHW-R	ATMEL	RF and Baseband Circuit, CMOS, PQCC32, 5 X 5 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, PLASTIC,	获取价格
AT86RF212	ATMEL	Low Power 700/800/900 MHz	获取价格
AT86RF212_1	ATMEL	Low Power 700/800/900 MHz	获取价格
AT86RF212_10	ATMEL	single-chip RF transceiver provides a complete radio interface	获取价格

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