PE9763 Datasheet, PDF (1/15 Pages) Peregrine Semiconductor Corp. – 3.2 GHz Delta-Sigma modulated Fractional-N Frequency Synthesizer for Low Phase Noise Applications

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.
Product Specification
PE9763
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 / 2¹⁸
• 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
20
Pre_en
Sdata
Primary
21-bit
Latch
f_r
K_17:0
Direct
Prescaler
10/11
Secon-
dary
20-bit
20
Latch
Auxilia-
18
ry
20-bit
Latch
18
2
Main
Counter
13
+
13
19
DSM
4
66
R Counter
Phase
Detector
PD_U
PD_D
Charge ^CP
Pump
Document No. 70-0140-01 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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