音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

U2893B Datasheet

  • U2893B

  • Modulation PLL for GSM, DCS and PCS Systems

  • 295.51KB

  • 14頁

  • TEMIC

掃碼查看芯片數(shù)據手冊

上傳產品規(guī)格書

PDF預覽

U2893B
Modulation PLL for GSM, DCS and PCS Systems
Description
The U2893B is a monolithic integrated circuit. It is
realized using TEMIC鈥檚 advanced silicon bipolar UHF5S
technology. The device integrates a mixer, an I/Q modu-
lator, a phase-frequency detector (PFD) with two
synchronous-programmable dividers, and a charge pump.
The U2893B is designed for cellular phones such as GSM,
DCS1800, and PCS1900, applying a transmitter-archi-
tecture where the VCO is operated at the TX output
frequency.
U2893B exhibits low power consumption, and the power-
down function extends battery life.
The IC is available in a shrinked small-outline 28鈥損in
package (SSO28).
Features
D
Supply voltage down to 2.7 V
D
Current consumption 40 mA
D
Power-down function
D
Low-current standby mode
D
High-speed PFD and charge pump
D
Integrated dividers
Benefits
D
D
D
D
D
High-level RF integration
TX architecture saves filter costs
Low external part count
Small SSO28 package
One device for various applications
Block Diagram
MDLO
I
NI
Q NQ
PUMIX
PU MIXO
MIXLO
MDO
NMDO
+
90
grd
Voltage
reference
Mixer
RF
NRF
I/Q modulator
N:1
divider
R:1
divider
Mode
control
GND
CPC GNDP
MUX
PFD
VSP
CPO
VS1
VS2
VS3
ND
NND
RD
NRD
MC
12494
Figure 1. Block diagram
TELEFUNKEN Semiconductors
Rev. A1, 29-Jan-97
1 (14)
Preliminary Information

U2893B相關型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務：
賣家服務：
技術客服：

0571-85317607

網站技術支持

13606545031

客服在線時間周一至周五
9:00-17:30

關注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務的動力！意見一經采納，將有感恩紅包奉上哦！