Complete, Direct-Conversion Tuner for DVB-S

and Free-to-Air Applications

4

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AC ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOLTAGE-CONTROLLED OSCILLATOR AND LO GENERATION

Guaranteed LO Frequency

Range

925

2175

MHz

-82

-102

LO Phase Noise

-122

dBc/Hz

XTAL/REFERENCE OSCILLATOR INPUT AND OUTPUT BUFFER

XTAL Oscillator Frequency

Range

Parallel-resonance-mode crystal

4

8

MHz

Input Overdrive Level

AC-coupled sine wave input

0.5

1

2.0

XTAL Output-Buffer Divider

Range

18

XTAL Output Voltage Swing

1

1.5

2

XTAL Output Duty Cycle

50

%

and characterization.

Note 2: Gain-control range specifications met over this band.

Note 3: In-band IIP3 test conditions: GC1 set to provide the nominal baseband output drive when mixing down a -23dBm tone 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 4: Out-of-band IIP3 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at

-20dBm each are applied at 2070MHz and 1975MHz. The IM3 tone at 5MHz is measured at baseband, but is referred to the

RF input.

Note 5: Input IP2 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at 2175MHz

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

Note 6: Adjacent channel protection test conditions: GC1 is set to provide the nominal baseband output drive with a 2110MHz

27.5Mbaud signal at -55dBm. GC2 set for mid-scale. The test signal will be set for PR = 7/8 and SNR of -8.5dB. An adjacent

channel at ±40MHz is added at -25dBm. DVB-S BER performance of 2E-4 will be maintained for the desired signal. GC2

may be adjusted for best performance.