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SA8027W

2.5 GHz low voltage, low power RF fractional-N/IF integer frequency synthesizer

Philips Electronics 

Philips Semiconductors

2.5 GHz low voltage, low power

RF fractional-N/IF integer frequency synthesizer

Product data

SA8027

CHARACTERISTICS

VDDCP = VDD = +3.0 V, Tamb = +25 °C; unless otherwise specified.

SYMBOL PARAMETER

CONDITIONS

Supply

VDD

VDDCP

ITotal

Digital supply voltage

Analog supply voltage

Synthesizer operational supply current

VDDCP w VDD

VDD = +3.0 V

(with main and aux on)

IStandby

Total supply current in power-down mode

RFin main divider input

logic levels 0 or VDD

fVCO

VRFin

VCO input frequency

AC-coupled input signal level

Rin (external) = Rs = 50 Ω;

single-ended drive;

max. limit is indicative

@ 500 to 2500 MHz

ZRFin

Input impedance (real part)

CRFin

Typical pin input capacitance

Nmain

Main divider ratio

fPCmax

Maximum loop comparison frequency

AUX divider input

fVCO = 2.4 GHz

fVCO = 2.4 GHz

indicative, not tested

fAUXin

Input frequency range

VAUXin

AC-coupled input signal level

Rin (external) = RS = 50 Ω;

max. limit is indicative

ZAUXin

Input impedance (real part)

CAUXin

Typical pin input capacitance

NAUX

Auxiliary division ratio

Reference divider input

fREFin

VREFin

Input frequency range from TCXO

AC-coupled input signal level

ZREFin

Input impedance (real part)

CREFin

Typical pin input capacitance

RREF

Reference division ratio

Charge pump current setting resistor input

RSET

External resistor from pin to ground

VSET

Regulated voltage at pin

Charge pump outputs; RSET = 7.5 kΩ

ICP

Charge pump current ratio to ISET1

IMATCH

IZOUT

Sink-to-source current matching

Output current variation versus VPH2

ILPH

Charge pump off leakage current

VPH

Charge pump voltage compliance

fVCO = 500 MHz

fVCO = 500 MHz

single-ended drive;

max. limit is indicative

fREF = 20 MHz

fREF = 20 MHz

SA = SM = ”000”

RSET = 7.5 kΩ

Current gain = IPH/ISET

VPH = 1/2 VDDCP

VPH in compliance range

VPH = 1/2 VDDCP

MIN.

2.7

2.7

–

–

500

–18

80

–

–

512

–

100

–15

112

–

–

128

5

360

–

–

4

6

–

–15

–10

–10

–10

0.6

TYP.

–

–

7.7

1

–

–

–

300

1

–

–

–

–

–

3.9

0.5

–

–

–

10

1

–

7.5

1.22

–

MAX.

UNIT

3.6

V

3.6

V

–

mA

–

µA

2500

0

632

–

–

65535

4

MHz

dBm

mVPP

Ω

pF

MHz

550

0

632

–

–

16383

MHz

dBm

mVPP

kΩ

pF

40

1300

–

–

1023

MHz

mVPP

kΩ

pF

15

kΩ

–

V

+15

%

+10

%

+10

%

+10

nA

VDDCP–0.7

V

2001 Aug 21

6

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