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HFA3524

更新时间： 2024-11-28 22:51:19
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
15页 175K
描述
2.5GHz/600MHz Dual Frequency Synthesizer

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HFA3524 数据手册

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HFA3524  
TM  
Data Sheet  
March 2000  
File Number 4062.8  
2.5GHz/600MHz Dual Frequency  
Synthesizer  
Features  
• 2.7V to 5.5V Operation  
The Intersil 2.4GHz PRISM® chip set is  
a highly integrated six-chip solution for  
RF modems employing Direct  
• Low Current Consumption  
• Selectable Powerdown Mode I  
= 1µA Typical at 3V  
CC  
• Dual Modulus Prescaler, 32/33 or 64/65  
Sequence Spread Spectrum (DSSS)  
signaling. The HFA3524 600MHz Dual  
• Selectable Charge Pump High Z State Mode  
Frequency Synthesizer is one of the six chips in the PRISM  
chip set (see the Typical Application Diagram).  
Applications  
The HFA3524 is a monolithic, integrated dual frequency  
synthesizer, including prescaler, is to be used as a local  
oscillator for RF and first IF of a dual conversion transceiver.  
• Systems Targeting IEEE 802.11 Standard  
• PCMCIA Wireless Transceiver  
• Wireless Local Area Network Modems  
• TDMA Packet Protocol Radios  
The HFA3524 contains a dual modulus prescaler. A 32/33 or  
64/65 prescaler can be selected for the RF synthesizer and a  
8/9 or a 16/17 prescaler can be selected for the IF  
• Part 15 Compliant Radio Links  
• Portable Battery Powered Equipment  
synthesizer. Using a digital phase locked loop technique, the  
HFA3524 can generate a very stable, low noise signal for the  
RF and IF local oscillator. Serial data is transferred into the  
HFA3524 via a three wire interface (Data, Enable, Clock).  
Supply voltage can range from 2.7V to 5.5V. The HFA3524  
features very low current consumption of 13mA at 3V.  
Ordering Information  
PART  
NUMBER  
TEMP.  
RANGE ( C)  
o
PACKAGE  
20 Ld TSSOP  
Tape and Reel  
PKG. NO.  
HFA3524IA  
-40 to 85  
M20.173  
HFA3524IA96  
-40 to 85  
Functional Block Diagram  
PHASE  
COMP  
IF  
15-BIT IF  
N COUNTER  
f
IF  
CHARGE  
PUMP  
IN  
PRESCALER  
D IF  
O
IF  
LD  
f
15-BIT IF  
OUT  
R COUNTER  
LOCK  
F
/LD  
O
DETECT  
FASTLOCK  
MUX  
OSC  
IN  
OSC  
RF  
LD  
15-BIT RF  
R COUNTER  
CHARGE  
PUMP  
D
RF  
O
PHASE  
COMP  
RF  
18-BIT RF  
N COUNTER  
f
RF  
IN  
PRESCALER  
CLOCK  
DATA  
LE  
22-BIT DATA  
REGISTER  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000  
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.  
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