MAX2106 datasheet(4/10 Pages) MAXIM

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DBS Direct Downconverter

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AC ELECTRICAL CHARACTERISTICS (continued)

(RFIN+ 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, fLCLK = 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.)

12.5

f = 925MHz

RFOUT Noise Figure (Note 10)

f = 925MHz

dBm

RFOUT Output Third-Order Intercept

Point (Note 10)

1.0

f = 1550MHz

2.0

f = 2175MHz

0.5

f = 925MHz

RFIN+ to RFOUT Gain (Note 10)

degrees

Quadrature Phase Error

Includes effects from baseband filters,

measured at 125kHz baseband

Quadrature Gain Error

Includes effects from baseband filters,

measured at 125kHz baseband

fFLCLK = 2.0625MHz, fC = 31.4MHz

fFLCLK = 1.25MHz, fC = 19.3MHz

fFLCLK = 0.5MHz, fC = 8MHz

-0.5

0.5

Deviation from ideal 7th order,

Butterworth, up to 0.7

× fC

Baseband Frequency Response

(Note 1)

750

CIDC_ = CQDC_ = 0.22µF

Baseband Highpass -3dB Frequency

(Note 1)

fIN_BAND = 100Hz to 22.5MHz,

fOUT_BAND = 67.5MHz to 112.5MHz

1.2

Ratio of In-Filter-Band to Out-of-Filter-

Band Noise

RFIN+ Return Loss (Note 6)

+13

LPF -3dB Cutoff-Frequency

Accuracy (Note 1)

-10

-5.5

5.5

fRFIN_ = 925MHz, ZSOURCE = 75

Ω

833

Controlled by FLCLK signal

MHz

LPF -3dB Cutoff-Frequency Range

(Note 1)

925MHz < f < 2175MHz, ZLOAD = 75

Ω

RFOUT Return Loss (Notes 6, 10)

f = 2175MHz

f = 1550MHz

f = 2175MHz

f = 1550MHz

IOUT_, QOUT_

Ω

Output Real Impedance (Note 1)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

CONDITIONS

+14

fRFIN_ = 2175MHz, ZSOURCE = 75

Ω

41.5

LO 2nd Harmonic Rejection (Note 7)

Average level of VIOUT_, VQOUT_

LO Half Harmonic Rejection (Note 8)

-66

Measured at RFIN+

LO Leakage Power (Notes 6, 9)

dBm

RFOUT PORT (LOOPTHROUGH)

BASEBAND CIRCUITS

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