SP8855E Mitel Networks, SP8855E Datasheet

SP8855E

Manufacturer Part Number

SP8855E

Description

2.8GHz Parallel Load Professional Synthesiser

Manufacturer

Mitel Networks

Datasheet

1.SP8855E.pdf (14 pages)

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Supersedes version in January 1996 Professional Products IC Hanbook, HB2480-3.0

FEATURES

ABSOLUTE MAXIMUM RATINGS

synthesisers containing all the elements apart from the loop

amplifier to fabricate a PLL synthesis loop. Other devices in

the series are the SP8852E which is a fully programmable

device requiring two 16 bit words to set the RF and reference

counters, and the SP8854E which has hard wired reference

counter programming and requires a single bit word to pro-

gram the RF divider. The SP8855E replaces the existing

SP8855D.

synthesiser frequency is required although it can also be used

where frequency selection is set by switches. In general the

device will be programmed by connecting the programming

pins to either V

be used to control the F

direction of the loop and select the phase detector gain.

Another input may be used to disable the phase detector

output.

(HC) J-leaded 44-lead chip carrier. Ambient temperature

ranges available are shown in the ordering information.

Supply voltage

Storage temperature

Operating temperature

Prescaler & reference Input Voltage

Data Inputs

Junction temperature

The SP8855E is one of a family of parallel load

The SP8855E is intended for applications where a fixed

The device is available in both plastic (HP) and ceramic

2.8GHz Operating Frequency (IG GRADE)

Single 5V Supply Operation

High Comparison Frequency 50MHz

High Gain Phase Detector 1mA/rad

Programmable Phase Detector Gain

Zero "Dead Band" Phase Detector

Wide range of RF and Reference Divide Ratios

Programming by Hard Wired Inputs

Low cost plastic package option

GPS HI-REL level a screened option

or ground. Additional hard wired inputs can

and F

ref

+ 175 C (HC package)

+ 150 C (HP package)

outputs set the control

-65 C to +150 C

-55 C to +100 C

2.8GHz Parallel Load Professional Synthesiser

-0.3V to 6V

2.5V p-p

+0.3V

-0.3V

*Fpd and Fref outputs are reversed using the Control Direction

input. The table above is correct when pin 23 is high.

Description

Input bus bit 10

Input bus bit 9

Input bus bit 8

Input bus bit 7

Input bus bit 6

Input bus bit 5

Input bus bit 4

Input bus bit 3

Input bus bit 2

Input bus bit 1

Input bus bit 0

0V (prescaler)

RF input

Lock detect output

C-lock detect

Rset

Charge pump output

Charge pump ref.

ref

+ 5V (prescaler)

Fig.1 Pin connections - top view

enable

REFERENCE

PIN 1

OPTIONAL

Advance Information

PIN 1

DS4239 - 3.0 March 1999

Description

Control Direction

+5V

Ref. osc capacitor

Ref in/XTAL

Reference bit 9

Reference bit 8

Reference bit 7

Reference bit 6

Reference bit 5

Reference bit 4

Reference bit 3

Reference bit 2

Reference bit 1

Reference bit 0

Phase Detect Enable

Phase Detect Gain 1

Phase Detect Gain 0

Input bus bit 13

Input bus bit 12

Input bus bit 11

pd*

ref*

SP8855E

HP44

HC44

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