MAX2105CWI datasheet(8/16 Pages) MAXIM

8 / 16 page

Direct-Conversion Tuner ICs for

Digital DBS Applications

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Typical Operating Characteristics (continued)

(MAX2102 EV kit circuit (Figure 1), VCC = 5V, PSGND = open, MOD = GND, fRFIN = 2150MHz, PRFIN = -19dBm, fLO = 2150.125MHz,

PLO = -15dBm driven single-ended into LO, AGC set via servo loop for VIOUT = VQOUT = 0.5Vp-p, IOUT, QOUT drive AC-coupled

100

Ω loads, 2kΩ from PSOUT to GND, TA = +25°C, unless otherwise noted.)

0.7

0.9 1.0 1.1 1.2

0.8

1.3 1.4 1.5 1.6 1.7

BASEBAND IM LEVELS

BASEBAND LEVELS, PER TONE (Vp-p)

IM2

IM3

f1 = 1448.1MHz

f2 = 1449MHz

fLO = 1451MHz

PRFIN = -40dBm PER TONE

0.85

1.25

1.65

2.05

2.45

QUADRATURE PHASE IMBALANCE

vs. FREQUENCY

RFIN FREQUENCY (GHz)

fLO = fRFIN + 125kHz

PRFIN = -40dBm

PLO = -15dBm

TA = +70°C

TA = 0°C

TA = +25°C

-0.5

-0.3

-0.4

-0.2

-0.1

0.2

0.1

0.3

0.4

0.5

0.85

1.25

1.65

2.05

2.45

QUADRATURE GAIN IMBALANCE

vs. FREQUENCY

RFIN FREQUENCY (GHz)

TA = +70°C

fLO = fRFIN + 125kHz

PRFIN = -40dBm

PLO = -15dBm

TA = +25°C

TA = 0°C

-5

100

BASEBAND GROUP DELAY

FLATNESS vs. FREQUENCY

-3

-4

FREQUENCY (MHz)

-1

-2

TA = +70°C

TA = +25°C

TA = 0°C

-3

0.1

100

BASEBAND GAIN FLATNESS

vs. FREQUENCY

-2

-1

FREQUENCY (MHz)

TA = +70°C

TA = +25°C

TA = 0°C

0.1

100

BASEBAND OUTPUT IMPEDANCE

vs. FREQUENCY

FREQUENCY (MHz)

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