MAX19997AETX+T【PDF 5/35 页】IC DOWNCONVERTER 2CH 36TQFN

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MAX19997A

Dual, SiGe High-Linearity, 1800MHz to 2900MHz

Downconversion Mixer with LO Buffer

+5.0V SUPPLY, HIGH-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS

(continued)

(Typical Application Circuit optimized for the standard RF band (see Table 1) , V CC = 4.75V to 5.25V, RF and LO ports are driven

from 50 ? sources, P LO = -3dBm to +3dBm, P RF = -5dBm, f RF = 2300MHz to 2900MHz, f LO = 2650MHz to 3250MHz, f IF = 350MHz,

f RF < f LO , T C = -40°C to +85°C. Typical values are at V CC = 5.0V, P RF = -5dBm, P LO = 0dBm, f RF = 2600MHz, f LO = 2950MHz,

f IF = 350MHz, T C = +25°C, unless otherwise noted.) (Note 7)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LO Input Return Loss

RF and IF terminated into a matched

impedance

13

dB

IF Output Impedance

Z IF

Nominal differential impedance at the IC ’s

IF outputs

200

RF terminated into 50 , LO driven by 50

IF Output Return Loss

source, IF transformed to 50 using

external components shown in the Typical

21

dB

Application Circuit

RF-to-IF Isolation

LO Leakage at RF Port

2LO Leakage at RF Port

LO Leakage at IF Port

Channel Isolation

T C = +100°C

(Notes 8, 9)

T C = +100°C

RFMAIN (RFDIV) converted

power measured at IFDIV

(IFMAIN) relative to IFMAIN

(IFDIV), all unused ports

terminated to 50

T C = +100°C

38.5

25

24

-28

-33

-18.5

-17.8

43

43.4

dB

dBm

dBm

dBm

dB

+5.0V SUPPLY, LOW-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit optimized for the standard RF band (see Table 1) , V CC = 4.75V to 5.25V, RF and LO ports are driven

from 50 ? sources, P LO = -3dBm to +3dBm, P RF = -5dBm, f RF = 2300MHz to 2900MHz, f LO = 1950MHz to 2550MHz, f IF = 350MHz,

f RF > f LO , T C = -40°C to +85°C. Typical values are at V CC = 5.0V, P RF = -5dBm, P LO = 0dBm, f RF = 2600MHz, f LO = 2250MHz,

f IF = 350MHz, T C = +25°C, unless otherwise noted.) (Note 7)

PARAMETER

Conversion Gain

SYMBOL

G C

CONDITIONS

f RF = 2400MHz to 2900MHz,

T C = +25°C (Notes 8, 9, 10)

MIN

8.1

TYP

8.7

MAX

9.3

UNITS

dB

f RF = 2305MHz to 2360MHz

f RF = 2500MHz to 2570MHz

0.2

0.15

Conversion Gain Flatness

f RF = 2570MHz to 2620MHz

f RF = 2500MHz to 2690MHz

f RF = 2700MHz to 2900MHz

0.2

0.25

0.25

dB

Gain Variation Over Temperature

TC CG

f RF = 2300MHz to 2900MHz, T C = -40°C to

+85°C

-0.01

dB/°C

Input Compression Point

IP 1dB

(Notes 6, 8, 11)

9.6

11.3

dBm

Maxim Integrated

5

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