Complete Single-Conversion

Television Tuner

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3

AC ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RF INPUT TO IFOUT1 OUTPUT

47

68

174

230

Operating Frequency Range

(see Table 7)

Gain specification met across these

frequency bands

470

862

MHz

Analog channel PIX carrier

38.9

Output Frequency

Digital channel center frequency

36

MHz

Maximum gain

33

41

49

Voltage Gain

Source impedance

= 75

Ω, load

impedance = 200

Ω Minimum gain

-10

dB

Input Return Loss

Selected channel

10

dB

Noise Figure

4.9

dB

20

Input IP2 (In-Band and Out-of-Band Tones)

At 12.5dB of gain

30

dBm

-10

Input IP3 (In-Band and Out-of-Band Tones)

At 12.5dB of gain

10

dBm

-38

At 12.5dB of gain

-5

dBm

Beats Within Output

0dBmV PIX carrier level

-40

dBc

VHF input, 140MHz to 500MHz

-60

VHF input, 500MHz to 1400MHz

-50

Beats, Converted to Output

UHF input, 950MHz to 1400MHz

-60

dBc

Gain Flatness

47MHz to 54MHz

2.5

Isolation

5MHz to 50MHz, RF input to IF output,

relative to desired channel

60

dBc

Port-to-Port Isolation

Isolation between RF input ports at 215MHz

27

dB

Image Rejection

Measured at 77.8MHz above desired

channel’s center frequency

57

70

dBc

5Hz to 65MHz

-40

Spurious Leakage at RF Input

65MHz to 878MHz

-40

dBmV

1kHz

-80

10kHz offset

-85

100kHz offset (1.5kHz loop bandwidth)

-105

Phase Noise (Single-Sideband)

1MHz offset (1.5kHz loop bandwidth)

-125

dBc/Hz

Output Return Loss

Balanced 50

Ω load

20

dB

IF VARIABLE-GAIN AMPLIFIER

Input Impedance

Balanced

2000

Ω

Output Impedance

Balanced (Note 1)

300

Ω