MAX19985A datasheet(3/23 Pages) MAXIM

Part #	MAX19985A

Description	Dual, SiGe, High-Linearity, 700MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual, SiGe, High-Linearity, 700MHz to 1000MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________

3

RECOMMENDED AC OPERATING CONDITIONS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RF Frequency

fRF

(Note 5)

700

1000

MHz

LO Frequency

fLO

(Note 5)

900

1300

MHz

Using Mini-Circuits TC4-1W-17 4:1 transformer

as defined in the Typical Application Circuit,

IF matching components affect the IF

frequency range (Note 5)

100

500

IF Frequency

fIF

Using alternative Mini-Circuits TC4-1W-7A

4:1 transformer, IF matching components

affect the IF frequency range (Note 5)

50

250

MHz

LO Drive Level

PLO

(Note 5)

-3

+3

dBm

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to +3dBm,

PRF = -5dBm, fRF = 700MHz to 1000MHz, fLO = 900MHz to 1200MHz, fIF = 200MHz, fRF < fLO, TC = -40°C to +85°C. Typical values

are at VCC = +5.0V, PRF = -5dBm, PLO = 0dBm, fRF =900MHz, fLO = 1100MHz, fIF = 200MHz, TC =+25°C, all parameters are guaran-

teed by design and characterization, unless otherwise noted.) (Note 6)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

fIF = 200MHz, fRF = 824MHz to 915MHz,

TC = -40°C to +85°C

7.0

8.7

10.2

Conversion Power Gain

GC

fIF = 200MHz, fRF = 824MHz to 915MHz,

TC = +25°C (Note 9)

7.7

8.7

9.7

dB

Conversion Power Gain Variation

vs. Frequency

ΔGC

Flatness over any one of three frequency

bands:

fRF = 824MHz to 849MHz,

fRF = 869MHz to 894MHz,

fRF = 880MHz to 915MHz (Note 9)

0.15

0.3

dB

Gain Variation Over TemperatureTCG

TC = -40°C to +85°C

-0.012

dB/°C

TC = -40°C to +85°C

9.2

11.5

Noise Figure

NF

fRF = 850MHz, fIF = 200MHz,

PLO = 0dBm, TC = +25°C, VCC = +5.0V

9.0

10.3

dB

Noise Figure Temperature

Coefficient

TCNF

TC = -40°C to +85°C

0.018

dB/°C

Noise Figure Under Blocking

Condition

NFB

+8dBm blocker tone applied to RF port,

fRF = 900MHz, fLO = 1090MHz,

PLO = -3dBm, fBLOCKER = 800MHz,

VCC = +5.0V (Note 7)

18.8

22

dB

TC = -40°C to +85°C

10.0

12.6

Input 1dB Compression Point

IP1dB

TC = +25°C (Note 9)

11.0

12.6

dBm

fRF = 824MHz to 915MHz,

fRF1 - fRF2 = 1MHz, fIF = 200MHz,

PRF = -5dBm/tone, TC = -40°C to +85°C

22.5

25.5

Third-Order Input Intercept Point

IIP3

fRF = 824MHz to 915MHz,

fRF1 - fRF2 = 1MHz, fIF = 200MHz,

PRF = -5dBm/tone, TC = +25°C (Note 9)

23.5

25.5

dBm

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