SA621 查看數據表（PDF） - Philips Electronics

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SA621

1GHz low voltage LNA, mixer and VCO

Philips Electronics 

Philips Semiconductors

1GHz low voltage LNA, mixer and VCO

Product specification

SA621

AC ELECTRICAL CHARACTERISTICS

VCC = +3.0V, TA = 25°C; RFIN = 881MHz, fVCO = 964MHz; unless otherwise stated.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

–3ó

TYP

+3ó

UNITS

Low Noise Amplifier

fRF

S21

S21

∆S21/∆T

∆S21/∆f

S12

S11

S22

P-1dB

IP3

RF input frequency range

Amplifier gain

Amplifier gain in power-down mode

Gain temperature sensitivity enabled

Gain frequency variation

Amplifier reverse isolation

Amplifier input match

Amplifier output match

Amplifier input 1dB gain compression

Amplifier input third order intercept

800MHz - 1.0GHz

@ 881 MHz

With ext. impedance matching

800

1000

MHz

15

dB

-28

dB

0.006

dB/°C

±0.013

dB/MHz

-28

dB

-10

dB

-10

dB

-20

dBm

-7

dBm

NF Amplifier noise figure

1.7

dB

tON

tOFF

Mixer

Amplifier turn-on time (Enable Lo → Hi)

Amplifier turn-off time (Enable Hi → Lo)

120

µs

0.3

µs

PGC

Mixer power conversion gain: RP = RL = 1.2kΩ,

fRF = 881MHz, fLO = 964MHz,

fIF = 83MHz

8.7

dB

S11M Mixer input match

Ext. impedance matching req.

-10

dB

NFM Mixer SSB noise figure

12

dB

P-1dB Mixer input 1dB gain compression

-10

dBm

IP3M Mixer input third order intercept

4.5

dBm

IP2INT Mixer input second order intercept

15

dBm

PRFM-IF Mixer RF feedthrough

RFIN = -25dBm

-41

dBm

PLO-IF LO feedthrough to IF

LO = -10dBm

-23

dBm

PLO-RFM LO to mixer input feedthrough

-52

dBm

PLO-RF LO to LNA input feedthrough

-38

dBm

Voltage Controlled Oscillator (VCO)1

fVCO

PVCO

VCO frequency range

VCO power out

VCO phase noise2

See Figure 3

Offset = 30kHz

Offset = 60kHz

883

1083

MHz

-10

-8

dBm

-109

-115

dBc/Hz

Harmonic content

-22

dBc

Residual modulation

45

dB

Pulling figure

VSWR=2:1, all phases

±500

kHz

Pushing figure

±100

kHz/V

Overall System

GSYS System gain

LNA + Mixer

23.0

23.7

24.4

dB

NOTES:

1. VCO performance dependent on external components.

2. Based on copper-plated 2mm ceramic resonator (1/4 wave), f = 1025MHz, and can be improved by silver-plated or larger resonators.

1997 Nov 07

4

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