MAX2106 datasheet(5/10 Pages) MAXIM

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DBS Direct Downconverter

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Note 1:

Minimum and maximum values are guaranteed by design and characterization over supply voltage.

Note 2

Driving differential load of 10k

Ω || 15pF.

Note 3:

Two signals are applied to RFIN_ at fLO - 100MHz and fLO - 199MHz. VGC2 = 1V, VGC1 is set so that the baseband out-

puts are at 590mVp-p. IM products are measured at baseband outputs but are referred to RF inputs.

Note 4:

Two signals are applied to RFIN_ at 1200MHz and 2150MHz. VGC2 = 1V, VGC1 is set so that the baseband outputs are at

590mVp-p. IM products are measured at baseband outputs but are referred to RF inputs.

Note 5:

PRFIN_ = -40dBm so that front-end IM contributions are minimized.

Note 6:

Using L64733/L64734 demo board from LSI Logic.

Note 7:

Downconverted level, in dBc, of carrier present at fLO

× 2, fLO = 1180MHz, fVCO = 590MHz, VRFBAND = unconnected (see

histogram plots).

Note 8:

Downconverted level, in dBc, of carrier present at fO / 2, fLO = 2175MHz, fVCO = 1087.5MHz, VRFBAND = 2.4V.

Note 9:

Leakage is dominated by board parasitics.

Note 10: VCPG1 = VCPG2 = VRFBAND = VINSEL = 0.5V, ƒLCLK = 0.5MHz.

Note 11: Guaranteed by design and characterization over supply and temperature.

Note 12: Measured at tuned frequency with PLL locked. PLL loop bandwidth = 3kHz. All phase noise measurements assume tank

components have a Q > 50.

AC ELECTRICAL CHARACTERISTICS (continued)

(IC driven single-ended with RFIN- AC-terminated in 75

Ω to GND, VCC = +4.75V to +5.25V, VIOUT_ = VQOUT_ = 0.59Vp-p,

CIOUT_ = CQOUT_ = 10pF, ƒLCLK = 2MHz, RIOUT_ = RQOUT_ = 10k

Ω, VLOBUFSEL = 0.5V, VRFBAND = VINSEL = VCPG1 = VCPG2 = +2.4V,

VPLLIN+ = VMOD+ = +1.3V, VPLLIN- = VMOD- = +1.1V, TA = +25°C, unless otherwise noted. Typical values are at VCC = +5V.)

LOCAL OSCILLATOR

SYNTHESIZER

-96

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

At 100kHz offset, fLO = 2175MHz

dBc/Hz

LO Phase Noise (Notes 6, 12)

-75

At 10kHz offset, fLO = 2175MHz

Figure 1

fRFIN = 2175MHz

RFIN+ to LO Input Isolation (Note 9)

-60

590

1180

MHz

LO Tuning Range (Note 11)

7.26

MHz

Crystal Frequency Range (Note 1)

0.75

1.5

Load = 10pF || 10k

Ω, fXTLOUT = 6MHz

Vp-p

XTLOUT Output Voltage Swing

At 1kHz offset, fLO = 2175MHz

MOD+, MOD- Hold Time (Note 1)

tHM

Figure 1

CONDITIONS

MOD+, MOD- Setup Time (Note 1)

tSUM

VLOBUFSEL

≥ 2.4V,

fLO = 925 MHz + 2175MHz

VRMS

LO Buffer Output Voltage (Note 1)

SYNTHESIZER

LOCAL OSCILLATOR

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