Product Specification
PE9763
Product Description
Peregrine’s PE9763 is a high performance fractional-N PLL
capable of frequency synthesis up to 3.2 GHz. The device is
designed for superior phase noise performance while providing
an order of magnitude reduction in current consumption, when
compared with the existing commercial space PLLs.
The PE9763 features a 10/11 dual modulus prescaler,
counters, a delta sigma modulator, a phase comparator and a
charge pump as shown in Figure 1. Counter values are
programmable through either a serial interface or directly hard-
wired.
PE9763 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 PE9763 offers excellent RF performance and
intrinsic radiation tolerance.
3.2 GHz Delta-Sigma modulated
Fractional-N Frequency Synthesizer
for Low Phase Noise Applications
Features
•
3.2 GHz operation
•
÷10/11 dual modulus prescaler
•
Selectable phase detector or charge
pump output
•
Serial or Direct mode access
•
Frequency selectivity: Comparison
frequency / 2
18
•
Low power —- 25 - 30 mA at 3V (phase
detector / charge pump)
•
Rad-Hard
•
Ultra-low phase noise
•
68-lead CQFJ or Die
Figure 1. Block Diagram
F
in
F
in
M
8:0
A
3:0
R
5:0
Pre_en
Sdata
Primary
21-bit
Latch
Prescaler
10/11
Main
Counter
13
PD_U
20
Secon-
dary
20-bit
Latch
Auxilia-
ry
20-bit
Latch
+
13
20
18
DSM
19
4
6
6
Phase
Detector
PD_D
Charge
Pump
CP
f
r
18
K
17:0
Direct
2
R Counter
Document No. 70-0140-01
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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