Direct-Conversion TV Tuner

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5

AC ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

At 5.25MHz (UHF mode)

23

At 4.75MHz (VHF mode)

23

At 13.25MHz (UHF mode)

63

At 11.75MHz (VHF mode)

62

Rejection Ratio

At > 16.2MHz

84

dB

DC Output Voltage

Common mode (Note 11)

Output DC Offset

BB_AGC = 2.85V

-70

+70

mV

Baseband Highpass Cutoff

Programmable

20 to 200

Hz

AGC Gain Slope

BB_AGC = 0.5V to 2.85V

14

35

dB/V

Ratio of Passband to Stopband

Noise

BB_AGC = 2.85V, 10kHz to 3.8MHz vs.

16.2MHz to 23.8MHz

15

dB

2-WIRE INTERFACE

Clock Rate

400

kHz

Note 1:

Part is tested and guaranteed only at hot temperature.

Note 2:

Note 3:

Guaranteed by design characterization over the specified operating conditions. Not production tested.

Note 4:

BB_AGC adjusted for gain = 72dB with RF_AGC at 2.85V.

Note 5:

Two tones at a) 230MHz and 431MHz with IM measured at 201MHz and b) 230MHz and 701MHz with IM measured at

471MHz.

Note 6:

Two tones at 499MHz and 689MHz with IM measured at 879MHz.

Note 7:

IM3 measured with two tones within the adjacent channel at a) 205.75MHz and 210.5MHz with IM measured at 201MHz

and b) 475.25MHz and 479.5MHz with IM measured at 471MHz.

Note 8:

Measured at RF = 171MHz with harmonics at 511MHz (3rd harmonic) and 851MHz (5th harmonic).

Note 9:

Delay of 2ns equal 2.74° phase error.

Note 10: UHF rolloff of 4dB in addition to gain flatness specification.

Note 12: Operation in the VHF band requires the R-divider = 2.

Note 13: Operation of the N-divider at values below 12 is not tested or guaranteed.