UMA1021 datasheet(8/16 Pages) PHILIPS

8 / 16 page

1999 Jun 17

Philips Semiconductors

Product speciﬁcation

Low-voltage frequency synthesizer

for radio telephones

UMA1021M

CHARACTERISTICS

All values refer to the typical measurement circuit of Fig.5; VDD1 =VDD2 = 2.7 to 5.5 V; VCC = 2.7 to 5.5 V; Tamb =25 °C;

unless otherwise speciﬁed. Characteristics for which only a typical value is given are not tested.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply; pins 4, 14 and 18

VDD

digital supply voltage

VDD1 =VDD2; VCC ≥ VDD

2.7

−

5.5

VCC

charge pump supply voltage

VCC ≥ VDD

2.7

−

5.5

IDD1 +IDD2

synthesizer digital supply current

VDD = 5.5 V

−

9.5

ICC

charge pump supply current

VCC = 5.5 V;

RSET = 5.6 kΩ

−

3.8

ICC(pd) +IDD(pd) total supply current in

power-down mode

logic levels 0 V or VDD

−

550

µA

RF main divider input; pin 6

fRF

RF input frequency

300

−

2200

MHz

VRF(rms)

AC-coupled input signal level

(RMS value)

Rs =50 Ω

−

225

main divider ratio

512

−

131071

input impedance (real part)

fRF = 1 GHz

−

Ω

fRF = 2 GHz

−

−Ω

typical pin input capacitance

fRF = 1 GHz

−

fRF = 2 GHz

−

Synthesizer reference divider input; pins 15 and 16

fxtal

crystal reference input frequency

−

MHz

Vxtal(rms)

sinusoidal input signal level

between pins 15 and 16

(RMS value)

−

500

Rref

reference division ratio

2047

input impedance (real part)

fxtal = 13 MHz

−

Ω

typical pin input capacitance

fxtal = 13 MHz

−

1.5

−

Phase detector

fPCmax

maximum loop comparison

frequency

−

2000

−

kHz

Charge pump current setting resistor input; pin 19

RSET

external resistor connected

between pin 19 and ground

5.6

−

Ω

VSET

regulated voltage at pin 19

RSET = 5.6 kΩ−

1.2

−

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