SA9503 datasheet(9/16 Pages) PHILIPS

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Philips Semiconductors

Objective specification

SA9503

Dual-band, CDMA/AMPS LNA

and downconverter mixers

1999 Jul 29

DOWNCONVERTER

AC ELECTRICAL CHARACTERISTICS

VCC = 2.7 V to 3.3 V; Tamb = 25°C, Plo= –3 dBm.

fIF = 130MHz, output differential load of 1kΩ for CDMA, and 850Ω for FM, as per application.

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

PARAMETER

TEST CONDITIONS

MIN

–3

TYP

MAX

UNIT

Cellular Band Downconverter

RF input frequency range

869

894

MHz

LO input frequency range

950

1030

MHz

IF output frequency range (CDMA)

300

MHz

IF output frequency range (FM)

300

MHz

IF Output Load Impedance

CDMA, differential

1000

Ω

FM, Single-ended, with ext. balun

850

Ω

Conversion Gain

CDMA

10.5

11.5

6.5

7.5

8.0

Noise Figure

CDMA mode, SSB

9.0

10.0

FM mode, SSB

Input IP3

CDMA mode

∆f1 = 900 kHz, ∆f2 = 1700 kHz

P1, P2 = –30 dBm

Tone spacing = 800 kHz

3.5

dBm

FM mode. P1, P2 = –24 dBm.

Tone spacing = 60 kHz, 330 kHz

5.0

dBm

RF Input Return Loss

ZS=50Ω with external matching

11.0

LO Input Return Loss

ZS=50Ω

10.0

(Tx) LO Output Return Loss

ZS=100Ω differential

LO Input Power Range

–9.0

–6.0

0.0

dBm

(Tx) LO Output Power Range

ZL=100Ω differential; (Tx) LO buffer ON.

–10.0

–6.0

–3.0

dBm

LO (Input and Output) to RF Leakage

CDMA

–35

dBm

–30

dBm

LO (Input and Output) to IF Leakage

CDMA

–30

dBm

–20

dBm

RF to LO (Input) Isolation

RF to IF Isolation

Single-ended in, differential out

CDMA

(Tx) LO Output to LO Input Isolation

Leakage conversion gain

f1 = fRX ± 40 MHz at LNA input.

P1 = – 70 dBm.

All LNA cellular modes.

Measured through conversion gain in

stop-band, without SAW filters being

connected. Pins terminated with resistive

equivalent load.

–40

dBc

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