MAX2105CWI datasheet(4/16 Pages) MAXIM

4 / 16 page

Direct-Conversion Tuner ICs for

Digital DBS Applications

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AC ELECTRICAL 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.)

Ω || 10pF load

TA = 0°C to +70°C

(Note 2)

(Note 1)

At -3dB attenuation

PRFIN = -50dBm; AGC = 4V, VCC = 5.0V

PSOUT load = 2k

Ω || 5pF (Note 3)

Vp-p

0.8

Prescaler Output Swing at PSOUT

950MHz < fRFIN < 2150MHz;

950MHz < fLO < 2150MHz; PRFIN = -40dBm;

fIOUT, fQOUT = 125kHz (Note 2)

950MHz < fRFIN < 2150MHz;

950MHz < fLO < 2150MHz; PRFIN = -40dBm;

fIOUT, fQOUT = 125kHz (Note 2)

fLO = 950MHz to 2150MHz, 50Ω source into

MAX2102 EV kit match circuit

(Note 4)

Refers to power level driven into LO,

LO (differentially driven) (Notes 2, 4)

(Notes 2, 5)

CONDITIONS

Prescaler Divide Ratio

MHz

Baseband Bandwidth

(at IOUT, QOUT)

Vp-p

2.7

IOUT, QOUT Clipping Level

Prescaler Duty Cycle at PSOUT

1kHz < (fIOUT, fQOUT) < 25MHz, 950MHz < fRFIN <

2150MHz, 950MHz < fLO < 2150MHz (Notes 3, 7, 8)

1kHz < (fIOUT, fQOUT) < 25MHz, 950MHz < fRFIN <

2150MHz, 950MHz < fLO < 2150MHz (Notes 3, 7, 8)

0.45

0.85

Baseband Gain Ripple

(at IOUT, QOUT)

Baseband Group Delay Ripple

(at IOUT, QOUT)

MHz

950

2150

LO Input Frequency Range

0.5

IOUT, QOUT Amplitude Imbalance

degrees

IOUT, QOUT Phase Imbalance

1.75:1

LO Input Worst-Case VSWR over

Band

-15

-5

LO Input Power Level

dBm

-15

RFIN to LO Input Isolation

UNITS

MIN

TYP

MAX

PARAMETER

MOD = low

MOD = high

TA = +25°C to +70°C (Notes 2 and 6)

degrees

-0.1

0.6

Worst-Case Additional Phase

Imbalance Over Temperature

TA = +25°C to +0°C (Note 2)

-0.07

OSCILLATOR BUFFER, QUADRATURE GENERATOR, PRESCALER

BASEBAND AC CHARACTERISTICS

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