Direct-Conversion Tuner IC for

Digital DBS Applications

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5

Note 1:

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

Note 2:

With external 100

Ω termination resistor.

Note 3:

Driving differential load of 10k

Ω || 15pF.

Note 4:

Note 5:

Note 6:

Note 7:

Using L64733/L64734 demo board from LSI Logic.

Note 8:

Note 9:

Note 10: Leakage is dominated by board parasitics.

Note 12: Measured at tuned frequency with PLL locked. All phase noise measurements assume tank components have a Q > 50.

AC ELECTRICAL CHARACTERISTICS (continued)

Ω,

LOCAL OSCILLATOR

SYNTHESIZER

-95

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

dBc/Hz

LO Phase Noise (Notes 7, 12)

-75

57

0

Figure 1

dB

RFIN_ to LO Input Isolation

(Note 10)

-55

590

1180

MHz

LO Tuning Range (Note 1)

ns

4

7.26

MHz

Crystal Frequency Range (Note 1)

2

0.75

1

1.5

Load = 10pF || 10k

XTLOUT Output Voltage Swing

V

XTLOUT Output Voltage DC

MOD+, MOD- Hold Time (Note 1)

7

Figure 1

CONDITIONS

ns

MOD+, MOD- Setup Time (Note 1)

SYNTHESIZER

LOCAL OSCILLATOR