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MAX2021ETX-T

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod

Maxim Integrated 

High-Dynamic-Range, Direct Up-/Downconversion

750MHz to 1200MHz Quadrature Mod/Demod

Typical Operating Characteristics (continued)

(MAX2021 Typical Application Circuit, VCC = +4.75V to +5.25V, GND = 0V, I/Q differential inputs driven from a 100Ω DC-coupled

source, 0V common-mode input, PLO = 0dBm, 750MHz ≤ fLO ≤ 1200MHz, 50Ω LO and RF system impedance, R1 = 432Ω, R2 = 619Ω,

R3 = 332Ω, TC = -40°C to +85°C. Typical values are at VCC = +5V, VBBI = 1.4VP-P differential, VBBQ = 1.4VP-P differential, fIQ = 1MHz,

fLO = 900MHz, TC = +25°C, unless otherwise noted.)

MODULATOR

MODULATOR OUTPUT POWER

vs. INPUT POWER

20

INPUT SPLIT BETWEEN I AND Q,

fIF = 25MHz, fLO = 900MHz

15

10

5

MODULATOR OUTPUT POWER

vs. LO FREQUENCY

5

VBBI = VBBQ = 1.4VP-P

DIFFERENTIAL

3

TC = -40°C

1

-1

TC = +85°C

TC = +25°C

LO LEAKAGE vs. LO FREQUENCY

-40

LO LEAKAGE NULLED AT PRF = -1dBm

-50

PRF = -40dBm PRF = +5dBm

-60

-70

PRF = -7dBm

-80

0

PLO = -6dBm, -3dBm, 0dBm, +3dBm

-3

-90

-5

10 13 16 19 22 25 28

INPUT POWER (dBm)

-5

750

825 900 975 1050 1125 1200

LO FREQUENCY (MHz)

PRF = -1dBm

-100

915 926 937 948 959 970

LO FREQUENCY (MHz)

LO LEAKAGE vs. LO FREQUENCY

-40

PRF = -1dBm, LO LEAKAGE NULLED AT TC = +25°C

-50

TC = -40°C

-60

-70

TC = +85°C

-80

-90

TC = +25°C

-100

915 926 937 948 959 970

LO FREQUENCY (MHz)

LO LEAKAGE vs. LO FREQUENCY

-40

PRF = -1dBm, LO LEAKAGE NULLED AT PLO = 0dBm

-50

PLO = -6dBm PLO = -3dBm

-60

-70

-80 PLO = +3dBm

-90

PLO = 0dBm

-100

915 926 937 948 959 970

LO FREQUENCY (MHz)

OUTPUT NOISE vs. OUTPUT POWER

-150

TC = +25°C, fLO = 900MHz

-155

PLO = -6dBm

-160

PLO = -3dBm

-165

-170

PLO = 0dBm

-175

PLO = +3dBm

-180

-15 -10 -5

0

5

10 15

OUTPUT POWER (dBm)

OUTPUT NOISE vs. OUTPUT POWER

-150

PLO = 0dBm, fLO = 900MHz

-155

-160

-165

TC = +85°C

-170

TC = -40°C

-175

TC = +25°C

-180

-15 -10 -5 0 5 10 15

OUTPUT POWER (dBm)

6 _______________________________________________________________________________________

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