Datasheet > ATA5773C-PXQW

ATA5773C-PXQW

更新时间： 2024-01-01 03:59:12

品牌	Logo	应用领域
美国微芯 - MICROCHIP		电信电信集成电路
页数	文件大小	规格书
190页	6336K
描述
Telecom Circuit, 1-Func

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ATA5773C-PXQW 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	5 X 5 MM, 0.65 MM PITCH, MO-220, QFN-24	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.25	JESD-30 代码：	S-XQCC-N24
长度：	5 mm	功能数量：	1
端子数量：	24	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC24,.19SQ,25
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
电源：	2.5/3.3 V	认证状态：	Not Qualified
筛选级别：	AEC-Q100	座面最大高度：	1 mm
子类别：	Other Telecom ICs	最大压摆率：	0.0141 mA
标称供电电压：	3 V	表面贴装：	YES
电信集成电路类型：	TELECOM CIRCUIT	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子节距：	0.65 mm
端子位置：	QUAD	宽度：	5 mm
Base Number Matches：	1

ATA5773C-PXQW 数据手册

Functional Description

Figure 1-1 on page 3 and Figure 1-2 on page 4 show the interconnections between the microcontroller and the RF part for a

typical application. In the recommended application circuits the clock output of the RF transmitter is connected to the

microcontroller in order to be able to generate data rate with tolerance lower than 3%. The transmitter’s crystal oscillator

(XTO), phase locked loop (PLL) and clock generation are started using pin ENABLE. The power amplifier (PA) is activated

using the connection to the pin PA_ENABLE. The FSK modulation is performed due to pulling of the crystal load capacitance

for this purpose the microcontroller out put port together with an external switch applies this modulation technique. For the

ASK modulation the power amplifier will be switched on and of by modulating the PA_ENABLE pin due to the data.

To wake up the system from standby mode at least one event is required, which will be performed by pushing tone button.

After this event the microcontroller starts up with the internal RC oscillator. For the TX operation the user software must

additionally control just 2 pins, the pin ENABLE and pin PA_ENABLE. In case of the FSK modulation one additional

connection from microcontroller is necessary to perform the pulling of the crystal load capacitance.

If ENABLE and PA_ENABLE are set to LOW the transmitter is in standby mode with the suitable mode setting of the

microcontroller (MCU) the power consumption will be reduced.

If ENABLE is set to HIGH and PA_ENABLE to LOW, the XTO, PLL, and the Clock driver of the RF transmitter are activated

and the VCO frequency is 32 times the XTO frequency. The Atmel ATA5771 and Atmel ATA5774 require typically shorter

than 1 ms until the PLL is locked and the transmitter’s clock output is stable, while the Atmel ATA5773 requires time shorter

than 3 ms for this progress.

If both ENABLE and PA_ENABLE are set to HIGH the whole RF transmitter (XTO, PLL, Clock driver and power Amplifier) is

activated. The ASK modulation is achieved by switching on and off the power amplifier via pin PA_ENABLE. The FSK

modulation is performed by pulling the crystal load capacitor which will change the reference frequency of the PLL due to the

data. The microcontroller modulates the load capacitance of the crystal using an external switch. A MOS transistor with a low

parasitic capacitance is recommended to be used for this purpose. During the FSK modulation is the PA_ENABLE pin set to

HIGH.

To generate the data for the telegram the internal RC oscillator of the microcontroller is not accurate enough because this

will be affected by ambient temperature and operating voltage. To reduce the variation of the data rate lower than 3% the

clock frequency generated by the RF transmitter should be used as a reference. The MCU has to wait at least longer than

3ms for ATA5773 after setting ENABLE to HIGH, before the clock output from the RF transmitter can be used. For ATA5771

and ATA5774 the MCU must wait longer than 1 ms until the clock output is stable. The clock output with the crystal tolerance

is connected to the timer0 of the MCU. This timer clocks the USI to generate the data rate. In the Two serial synchronous

data transfer modes will be provided by USI. This will be pass out with different physical I/O ports, two wire mode is used for

ASK and the three wire mode for FSK.

3.1

Frequency Generation

In Atmel ATA5773 and Atmel ATA5774 the VCO is locked to 32 times crystal frequency hence the following crystal is

needed

●

9.8438MHz for 315MHz application

13.56MHz for 433.92MHz application

The VCO of ATA5771 is locked to 64 times crystal frequency therefore the necessary crystal frequency is

●

13.5672MHz for 868.3MHz application

14.2969MHz for 915MHz application

Due to the high integration the PLL and VCO peripheral elements are integrated.

The XTO is a series resonance oscillator that only one capacitor together with a crystal connected in series to GND are

needed as external elements. Until the PLL and clock output is stable the following time can be expected

●

3ms for ATA5773

1ms for ATA5771 and ATA5774

Therefore, a time delay of ≥ 3 ms for ATA5773 and ≥ 1ms for ATA5771/74 between activation of pin ENABLE and switching

on the pin PA_ENABLE must be implemented in the software.

ATA5771C/73C/74C [DATASHEET]

9137I–RKE–08/14

1...5 6 789 10 11...190

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与ATA5773C-PXQW相关器件

型号	品牌	获取价格	描述	数据表
ATA5773-PXQW	ATMEL	获取价格	Microcontroller with UHF ASK/FSK Transmitter
ATA5774	ATMEL	获取价格	Microcontroller with UHF ASK/FSK Transmitter
ATA5774C	MICROCHIP	获取价格	A highly flexible programmable ASK/FSK transmitter that combines an high-performance low p
ATA5774C-PXQW	MICROCHIP	获取价格	Telecom Circuit, 1-Func
ATA5774-PXQW	ATMEL	获取价格	Microcontroller with UHF ASK/FSK Transmitter
ATA5780N-PNQW	ATMEL	获取价格	Telecom Circuit, 1-Func, PQCC32,
ATA5780N-WNQW	ATMEL	获取价格	Telecom Circuit, 1-Func, 5 X 5 MM, 0.50 MM PITCH, LEAD FREE, VQFN-32
ATA5780N-WNQW	MICROCHIP	获取价格	Telecom Circuit, 1-Func
ATA5780-PNQW	ATMEL	获取价格	Telecom Circuit, 1-Func, 5 X 5 MM, 0.50 MM PITCH, LEAD FREE, VQFN-32
ATA5781	ATMEL	获取价格	AVR microcontroller core with 1Kbyte SRAM and 24Kbyte RF library in firmware (ROM)

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