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MAX2245EBL-T

更新时间： 2024-10-02 22:30:35
品牌 Logo 应用领域
美信 - MAXIM 放大器射频微波功率控制功率放大器
页数 文件大小 规格书
14页 312K
描述
2.5GHz, 22dBm/20dBm Power Amplifiers with Analog Closed-Loop Power Control

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MAX2245EBL-T 数据手册

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19-2204; Rev 2; 8/03  
2.5GHz, 22dBm/20dBm Power Amplifiers with  
Analog Closed-Loop Power Control  
General Description  
Features  
The MAX2244/MAX2245/MAX2246 single-supply, low-  
voltage power amplifiers (PAs) are designed for 20dBm  
Bluetooth™ Class 1 applications in the 2.4GHz to 2.5GHz  
band. The MAX2244/MAX2245 deliver a peak output  
power of 22dBm with greater than 20dB output-power  
control range. The 22dBm output power compensates for  
the filter loss between the PA and the antenna, allowing  
20dBm to be delivered to the antenna. The MAX2246 pro-  
vides a peak output power of 20dBm for a 30% reduction  
in supply current.  
o 2.4GHz to 2.5GHz Operation  
o Accurate Closed-Loop Output Power Control  
Over Full Temperature, Supply, and Input Power  
Range  
o Convenient Analog Power-Control Interface  
o 22dBm Peak Output Power (MAX2244/MAX2245)  
o 20dBm Peak Output with 30% Reduced Supply  
Current (MAX2246)  
The PAs integrate a power detector and closed-loop  
power-control circuitry to provide nearly constant output  
power over the full range of supply voltage, temperature,  
and input power level. The voltage at the analog control  
input precisely controls the output power level.  
o Internal Bandwidth-Limited Power Ramping  
o 50Ω Integrated Input Match  
o 0.5µA Shutdown Supply Current  
The MAX2244/MAX2245/MAX2246 feature a low-current  
shutdown mode through a simple logic input. Internal cir-  
cuitry automatically controls the ramp-up/down of the  
output power level during turn-on and turn-off to meet  
Bluetooth spurious emissions requirements.  
o Ultra Chip-Scale Package (1.56mm ✕ 1.56mm)  
Ordering Information  
TEMP  
RANGE  
BUMP  
PACKAGE  
TOP  
MARK  
The devices operate from a 3V to 3.6V single supply.  
The MAX2244/MAX2246 have a power-control voltage  
range of 0.5V to 2V, and the MAX2245 has a control  
voltage range of 0.9V to 2.2V. The devices are pack-  
aged in a miniature ultra chip-scale package (UCSP™),  
significantly reducing the required board area.  
PART  
MAX2244EBL-T -40°C to +85°C 9 UCSP*-9  
MAX2245EBL-T -40°C to +85°C 9 UCSP*-9  
MAX2246EBL-T -40°C to +85°C 9 UCSP*-9  
AAP  
AAQ  
AAY  
*UCSP reliability is integrally linked to the user's assembly  
methods, circuit board material, and environment. See the  
UCSP Reliability Notice in the UCSP Reliability section of this  
data sheet for more information.  
Applications  
Bluetooth Class 1 Radios  
802.11 FHSS/HomeRF™ Radios  
2.4GHz Cordless Phones  
Pin Configuration appears at end of data sheet.  
Functional Diagram  
V
V
CC1  
CC2  
C2  
A2  
SHUTDOWN  
BIAS  
RFIN/  
B1  
SHDN  
B3  
MATCH  
MATCH  
MATCH  
RFOUT  
CONTROL  
AMP  
POWER  
DETECTOR  
MAX2244  
MAX2245  
MAX2246  
A1  
ANALOG  
INTERFACE  
PC  
A3  
GND  
C3  
C1  
B2  
GND  
GND GND  
Bluetooth is a trademark of Ericsson Corp.  
UCSP is a trademark of Maxim Integrated Products, Inc.  
HomeRF is a trademark of The HomeRF Working Group.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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