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Intersil Corporation - 2.5GHz/600MHz Dual Frequency Synthesizer

Numéro de référence HFA3524
Description 2.5GHz/600MHz Dual Frequency Synthesizer
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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HFA3524 fiche technique
TM
Data Sheet
HFA3524
March 2000 File Number 4062.8
2.5GHz/600MHz Dual Frequency
Synthesizer
The Intersil 2.4GHz PRISM® chip set is
a highly integrated six-chip solution for
RF modems employing Direct
Sequence Spread Spectrum (DSSS)
signaling. The HFA3524 600MHz Dual
Frequency Synthesizer is one of the six chips in the PRISM
chip set (see the Typical Application Diagram).
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.
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
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.
Functional Block Diagram
fIN IF
IF
PRESCALER
15-BIT IF
N COUNTER
OSCIN
OSC
fIN RF
RF
PRESCALER
15-BIT IF
R COUNTER
15-BIT RF
R COUNTER
18-BIT RF
N COUNTER
Features
• 2.7V to 5.5V Operation
• Low Current Consumption
• Selectable Powerdown Mode ICC = 1µA Typical at 3V
• Dual Modulus Prescaler, 32/33 or 64/65
• Selectable Charge Pump High Z State Mode
Applications
• Systems Targeting IEEE 802.11 Standard
• PCMCIA Wireless Transceiver
• Wireless Local Area Network Modems
• TDMA Packet Protocol Radios
• Part 15 Compliant Radio Links
• Portable Battery Powered Equipment
Ordering Information
PART
NUMBER
TEMP.
RANGE (oC)
PACKAGE
PKG. NO.
HFA3524IA
HFA3524IA96
-40 to 85
-40 to 85
20 Ld TSSOP M20.173
Tape and Reel
PHASE
COMP
IF
LD
CHARGE
PUMP
RF
LD
PHASE
COMP
CHARGE
PUMP
DO IF
f OUT
LOCK
DETECT
FASTLOCK
MUX
FO/LD
DO RF
CLOCK
DATA
LE
22-BIT DATA
REGISTER
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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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