Direct-Conversion TV Tuner

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3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

170

230

Operating Frequency Range

Gain specification met across this

frequency band

470

878

MHz

RF_AGC = BB_AGC = +2.85V

74

Overall Voltage Gain (Note 2)

RF_AGC = BB_AGC = +0.5V

26

dB

RF Gain Flatness

Within each VHF-III and UHF band (Note 10)

-3

+3

dB

Input Return Loss

Worst case across band selected, 75

Ω system

7

dB

230MHz

5.4

470MHz

4.7

Noise Figure (DSB) (Notes 3, 4)

NF

858MHz

6.5

dB

Broadband (Notes 4, 5)

12

Input 2nd-Order Intercept Point

IIP2

Broadband, RF_AGC adjusted for 49dB of gain

> 26

dBm

Broadband (Notes 4, 6)

> -4

Broadband, RF_AGC adjusted for 49dB of gain

> 12

Narrowband (Notes 4, 7)

-15

Input 3rd-Order Intercept Point

IIP3

Narrowband, RF_AGC adjusted for 49dB of

gain (Note 7)

3

dBm

-24

RF 1dB Desense

RF_AGC adjusted for 49dB of gain,

-1

dBm

RF input range of 170MHz to 960MHz (Note 8)

-60

LO Harmonic Reception

RF input range of 960MHz to 1400MHz

> -40

dBc

RF Channel Flatness

8MHz RF channel at baseband, tested at

169MHz and 469MHz

-1

+1

dB

Isolation

DC to 30MHz, RF input to baseband output,

relative to desired channel

> 60

dBc

I/Q phase error at 1MHz

-3

+3

Degrees

Quadrature Accuracy

I/Q amplitude error at 1MHz

-1.5

+1.5

dB

50MHz to 470MHz

-50

-20

470MHz to 878MHz

-50

-35

Spurious at the RF Input (Note 3)

878MHz to 1732MHz

< -50

-20

dBmV

At 1kHz to 10kHz (Note 3)

-80

-90

At 100kHz (Note 3)

-94

-107

Phase Noise (Single-Sideband,

Closed Loop)

ΦN

At 1MHz

-130

dBc/Hz

AC ELECTRICAL CHARACTERISTICS

noted.) (Note 1)