SP8858IGHCAR datasheet, PDF - EEWORLD Datasheet

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SP8858IGHCAR: DescriptionPLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28; Categoryaccessories; File Size475KB，21 Pages; ManufacturerZarlink Semiconductor (Microsemi); Websitehttp://www.zarlink.com/

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SP8858IGHCAR Overview

PLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28

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SP8858

1·5GHz Professional Synthesiser

Supersedes March 1997 version, DS3843 - 3.0

DS3843 - 4.1 July 1998

LOCK DETECT

FEATURES

Low Residual Phase Noise (see Reference 1)

Operation to 1·5GHz over Full Temperature Range

High Input Sensitivity

Improved Linear Digital Phase Detector

Programmable Charge Pump Current: 10µA to 2 mA

On-chip

416/17

48/9

Dual Modulus Prescaler

Three-wire Serial Data Interface

13-bit Reference Counter

15-bit M Counter

Stores an Alternative Programming Word

Facility to Program A counter Only

Power Saving Standby Mode

ABSOLUTE MAXIMUM RATINGS

Supply voltage

Storage temperature

Operating temperature

Prescaler input voltage

20·3V

17V

265°C

1150°C

255°C

1125°C

2·5V p-p

27 26

REF

POWER DOWN

RF INPUT

17 18

CP REF

The SP8858 is a single chip synthesiser intended for PLL

signal synthesis applications up to 1.5GHz and includes a

dual modulus prescaler (4N/N11), programmable A, M and

R dividers, digital phase detector, charge pump and lock

detect circuits.

The SP8858 is a development of the SP8853 synthesiser

with low residual phase noise, increased dynamic range

above 1GHz and an improved high gain phase detector

design that eliminates the dead-band.

The low prescaler modulus, programmable to either 16/17

or 8/9, together with the 15-bit M counter and 13-bit reference

counter make this device ideal for a diverse range of high

performance applications.

The nominal phase detector gain is set by a reference

current into pin 24 and the gain can be varied over a 4:1 range

when the device is programmed. The dividers, the phase

detector sense, the prescaler modulus and the data buffer

control logic are also programmable using the three wire

serial interface. An alternative 22-bit control word for the A

and M dividers and phase detector gain can be stored so

allowing fast frequency hopping and bandwidth switching by

simply toggling the logic level on pin 13 (F1/F2). In addition,

the A counter of the ‘active’ buffer can be programmed with

only 6 bits, allowing fast hopping to adjacent channels.

A simple exclusive - or lock detect circuit is also provided,

the sensitivity of which is determined by an external capacitor.

LOCK DETECT

27 26

REF

POWER DOWN

RF INPUT

CP REF

17 18

CP OUTPUT

RPD

GROUND

XTAL 1

XTAL2

SP8858

DATA

CLOCK

ENABLE

F1/F2

HC28

CP OUTPUT

RPD

GROUND

XTAL 1

XTAL2

SP8858

DATA

CLOCK

ENABLE

F1/F2

HP28

Fig. 1 Pin connections (top view)

ORDERING INFORMATION

SP8858 IG HCAR

240°C

185°C

(Industrial grade)

SP8858 MG HCAR

255°C

1125°C

(Military grade)

SP8858 IG HPAS

240°C

185°C

(Industrial grade)

SP8858IGHCAR Related Products

	SP8858IGHCAR	SP8858MGHCAR	SP8858	SP8858IGHPAS
Description	PLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28	PLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28	PLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28	PLL FREQUENCY SYNTHESIZER, 1500 MHz, PQCC28

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