PE9721-EK Ver la hoja de datos (PDF) - Peregrine Semiconductor Corp.
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PE9721-EK Datasheet PDF : 13 Pages
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Product Description
Peregrine’s PE9721 is a high performance integer-N PLL
with embedded EEPROM capable of frequency
synthesis up to 2.7 GHz. The EEPROM allows
designers to permanently store control bits, allowing
easy configuration of self-starting synthesizers. The
superior phase noise performance of the PE9721 is ideal
for applications such as wireless local loop base stations,
LMDS systems, and RF instrumentation systems.
The PE9721 features a ÷10/11 dual modulus prescaler,
counters, a phase comparator, and a charge pump as
shown in Figure 1. Counter values are programmable
through a three-wire serial interface.
The PE9722 is optimized for commercial space
applications. Single Event Latch up (SEL) is physically
impossible and Single Event Upset (SEU) is better than
10-9 errors per bit/day. Fabricated in Peregrine’s
patented UTSi® (Ultra Thin Silicon) CMOS technology,
the PE9722 offers excellent RF performance and intrinsic
radiation tolerance.
Figure 1. Block Diagram
Fin
Fin
ENH
E_WR
Data
Clock
EELoad
VPP
S_WR
fr
EESel
FSel
Serial
Interface
Mux
Enhancement
Register
(8-bit)
Primary
Register
(20-bit)
20
EE
Register
(20-bit)
Transfer
Logic
Prescaler
÷10/11
Secondary
Register
(20-bit)
20
20
EEPROM
M Counter
÷2 to ÷512
13
6
6
R Counter
÷1 to ÷64
PRELIMINARY SPECIFICATION
PE9721
Rad Hard for Space Applications
2.7 GHz Integer-N PLL
with Field-Programmable
EEPROM
Features
• Field-programmable EEPROM
for self-starting applications
• 2.7 GHz operation
• ÷10/11 dual modulus prescaler
• Internal charge pump
• 100 Krad total dose
• Serial programmable
• Low power 30 mA at 3 V
• Ultra-low phase noise
• Available in 24-lead Ceramic
SOIC
Phase
Detector
PD_U
PD_D
Charge
Pump
2k
CP
LD
Cext
PEREGRINE SEMICONDUCTOR CORP. | http://www.peregrine-semi.com
Copyright Peregrine Semiconductor Corp. 2002
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