PE3236EK PEREGRINE [Peregrine Semiconductor Corp.], PE3236EK Datasheet - Page 7

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PE3236EK

Manufacturer Part Number
PE3236EK
Description
2200 MHz UltraCMOS-TM Integer-N PLL for Low Phase Noise Applications
Manufacturer
PEREGRINE [Peregrine Semiconductor Corp.]
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PE3236EK
Manufacturer:
PEREGRINE
Quantity:
20 000
PE3236
Product Specification
Functional Description
The PE3236 consists of a prescaler, counters, a
phase detector and control logic. The dual
modulus prescaler divides the VCO frequency by
either 10 or 11, depending on the value of the
modulus select. Counters “R” and “M” divide the
reference and prescaler output, respectively, by
integer values stored in a 20-bit register.
additional counter (“A”) is used in the modulus
select logic. The phase-frequency detector
Figure 4. Functional Block Diagram
Document No. 70-0026-03 │ www.psemi.com
Control
D(7:0)
Pins
Sdata
F
F
in
in
f
r
Control
Logic
Prescaler
Modulus
Select
10/11
R(5:0)
M(8:0)
A(3:0)
An
M Counter
R Counter
(9-bit)
(6-bit)
generates up and down frequency control signals.
The control logic includes a selectable chip
interface. Data can be written via serial bus,
parallel bus, or hardwired direct to the pins. There
are also various operational and test modes and
lock detect.
Detector
Phase
©2003-2005 Peregrine Semiconductor Corp. All rights reserved.
LD
f
PD_U
PD_D
Cext
f
c
p
Page 7 of 15

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