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MAX2102

Direct-Conversion Tuner ICs for Digital DBS Applications

Maxim Integrated 

Direct-Conversion Tuner ICs for

Digital DBS Applications

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 100Ω loads; 2kΩ from PSOUT to GND; TA = +25°C; unless otherwise noted.)

PARAMETER

CONDITIONS

OSCILLATOR BUFFER, QUADRATURE GENERATOR, PRESCALER

LO Input Frequency Range

(Note 1)

LO Input Worst-Case VSWR over

Band

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

MAX2102 EV kit match circuit

MIN TYP MAX UNITS

950

2150 MHz

1.75:1

LO Input Power Level

(Note 4)

Refers to power level driven into LO,

LO (differentially driven) (Notes 2, 4)

RFIN to LO Input Isolation

(Notes 2, 5)

IOUT, QOUT Phase Imbalance

950MHz < fRFIN < 2150MHz;

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

fIOUT, fQOUT = 125kHz (Note 2)

Worst-Case Additional Phase

Imbalance Over Temperature

TA = +25°C to +70°C (Notes 2 and 6)

TA = +25°C to +0°C (Note 2)

IOUT, QOUT Amplitude Imbalance

950MHz < fRFIN < 2150MHz;

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

fIOUT, fQOUT = 125kHz (Note 2)

Prescaler Divide Ratio

TA = 0°C to +70°C

(Note 2)

MOD = low

MOD = high

Prescaler Output Swing at PSOUT 2kΩ || 10pF load

Prescaler Duty Cycle at PSOUT

PSOUT load = 2kΩ || 5pF (Note 3)

BASEBAND AC CHARACTERISTICS

IOUT, QOUT Clipping Level

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

Baseband Bandwidth

(at IOUT, QOUT)

At -3dB attenuation

-15

-5

dBm

-15

28

dB

3 degrees

-0.1

-0.07

0.6

degrees

1

0.5

dB

64

64

65

65

0.8

Vp-p

35

65

%

2.7

Vp-p

94

MHz

Baseband Gain Ripple

(at IOUT, QOUT)

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

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

0.45 0.85

dB

Baseband Group Delay Ripple

(at IOUT, QOUT)

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

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

0.45

ns

4 _______________________________________________________________________________________

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