MAX2121B datasheet(4/20 Pages) MAXIM

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(MAX2121 Evaluation Kit: VCC_ = +3.13V to +3.47V, fXTAL = 27MHz, TA = -40°C to +85°C, default register settings except BBG[3:0] = 1111,

LPF[7:0] = 97h. Typical values measured at VCC = +3.3V, TA = +25°C, unless otherwise noted.) (Note 1)

Note 1: Min/max values are production tested at TA = +25°C. Min/max limits at TA = -40°C and TA = +85°C are guaranteed by

design and characterization.

Note 2: Guaranteed by design and characterization at TA = +25°C.

Note 3: Input gain range specifications met over this band.

Note 4: In-band IIP3 test conditions: GC1 set to provide the nominal baseband output drive when mixing down a -23dBm tone at

2175MHz to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at

-26dBm each are applied at 2174MHz and 2175MHz. The IM3 tone at 3MHz is measured at baseband, but is referred to

the RF input.

Note 5: Out-of-band IIP3 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at

2175MHz to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at

-20dBm each are applied at 1919MHz and 1663MHz. The IM3 tone at 5MHz is measured at baseband, but is referred to

the RF input.

Note 6: Input IP2 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at 2175MHz

to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at -20dBm

each are applied at 925MHz and 1250MHz. The IM2 tone at 5MHz is measured at baseband, but is referred to the RF input.

Note 7: See Table 16 for crystal ESR requirements.

AC Electrical Characteristics (continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOLTAGE-CONTROLLED OSCILLATOR AND LO GENERATION

Guaranteed LO Frequency Range

925

2250

MHz

LO Phase Noise

fOFFSET = 10kHz

-97

dBc/Hz

fOFFSET = 100kHz

-100

fOFFSET = 1MHz

-122

XTAL/REFERENCE OSCILLATOR INPUT AND OUTPUT BUFFER

XTAL Oscillator Frequency

Range fXTAL

Parallel-resonance-mode crystal (Note 7)

MHz

Input Overdrive Level

AC-coupled sine-wave input

0.5

2.0

VP-P

XTAL Output-Buffer Divider Range

—

XTAL Output Voltage Swing

12MHz to 30MHz, CLOAD = 10pF

1.5

VP-P

XTAL Output Duty Cycle

MAX2121B

L-Band Tuner with Programmable

Baseband Filter

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