LT5557 datasheet(3/16 Pages) LINER

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LT5557

5557fa

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Conversion Gain

RF = 450MHz, IF = 70MHz, High Side LO

2.9

RF = 900MHz, IF = 140MHz

3.3

RF = 1750MHz

3.0

RF = 1950MHz

2.9

RF = 2150MHz

2.9

RF = 2600MHz, IF = 360MHz

2.5

RF = 3600MHz, IF = 450MHz

1.7

Conversion Gain vs Temperature

TA = – 40°C to 85°C, RF = 1950MHz

–0.0217

dB/

°C

Input 3rd Order Intercept

RF = 450MHz, IF = 70MHz, High Side LO

24.1

dBm

RF = 900MHz, IF = 140MHz

25.6

dBm

RF = 1750MHz

25.5

dBm

RF = 1950MHz

24.7

dBm

RF = 2150MHz

24.3

dBm

RF = 2600MHz, IF = 360MHz

23.7

dBm

RF = 3600MHz, IF = 450MHz

23.5

dBm

Single-Sideband Noise Figure

RF = 450MHz, IF = 70MHz, High Side LO

12.7

RF = 900MHz, IF = 140MHz

10.6

RF = 1750MHz

11.3

RF = 1950MHz

11.7

RF = 2150MHz

12.8

RF = 2600MHz, IF = 360MHz

13.2

RF = 3600MHz, IF = 450MHz

15.4

LO to RF Leakage

fLO = 380MHz to 1600MHz

<–50

dBm

fLO = 1600MHz to 4000MHz

<–45

dBm

LO to IF Leakage

fLO = 380MHz to 2200MHz

<–42

dBm

fLO = 2200MHz to 4000MHz

<–38

dBm

RF to LO Isolation

fRF = 400MHz to 1700MHz

>50

fRF = 1700MHz to 3800MHz

>42

RF to IF Isolation

fRF = 400MHz to 2300MHz

>41

fRF = 2300MHz to 3800MHz

>37

2RF-2LO Output Spurious Product

900MHz: fRF = 830MHz at –6dBm, fIF = 140MHz

–61

dBc

(fRF = fLO + fIF/2)

1950MHz: fRF = 1830MHz at –6dBm, fIF = 240MHz

–53

dBc

3RF-3LO Output Spurious Product

900MHz: fRF = 806.67MHz at –6dBm, fIF = 140MHz

–83

dBc

(fRF = fLO + fIF/3)

1950MHz: fRF = 1790MHz at –6dBm, fIF = 240MHz

–70

dBc

Input 1dB Compression

RF = 450MHz, IF = 70MHz, High Side LO

10.0

dBm

RF = 900MHz, IF = 140MHz

8.8

dBm

RF = 1950MHz

8.8

dBm

RF = 2600MHz, IF = 360MHz

8.6

dBm

RF = 3600MHz, IF = 450MHz

9.1

dBm

AC ELECTRICAL CHARACTERISTICS Standard Downmixer Application: V

CC = 3.3V, EN = High, TA = 25°C,

PRF = – 6dBm (–6dBm/tone for 2-tone IIP3 tests, Δf = 1MHz), fLO = fRF – fIF, PLO = –3dBm (0dBm for 450MHz and 900MHz tests),

IF output measured at 240MHz, unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: 450MHz and 900MHz performance measured with external LO and

RF matching. 2600MHz and 3600MHz performance measured with

external RF matching. See Figure 1 and Applications Information.

Note 3: Specifications over the –40

°C to 85°C temperature range are

assured by design, characterization and correlation with statistical process

controls.

Note 4: SSB Noise Figure measurements performed with a small-signal

noise source and bandpass filter on RF input, and no other RF signal

applied.

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