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7

MC44CC373

PERFORMANCE CHARACTERISTICS

Unless otherwise stated, all performance characteristics

are for:

•

•

•

•

RF inputs/outputs into 75

Ω load.

NOTE:

Specifications only valid for envelope demodulation.

The parameters listed are based on the type of test condi-

tions found in the column Type.

•

A = 100% tested

•

B = 100% Correlation tested

•

C = Characterized on samples

•

D = Design parameter

See "Characterization Measurement Conditions" on

page 18 for each C type parameter.

Table 6. High Frequency Characteristics

Parameter

1. See Performance Measurement Test Set-ups, Table 9.

Device

Min

Typ

Max

Unit

Type

2. Refer to application note to obtain 82 dB

μV or other RF levels and to reduce picture carrier harmonics.

Output signal from modulator

section

MC44CC373CA

MC44CC374CA

MC44CC374T1A

83

89

93

dB

μV

B

UHF oscillator frequency

460

—

880

MHz

A

VHF range

UHF oscillator internally

divided

45

—

460

MHz

B

During transient output inhibit,

or when ATT bit is set to 1.

50

60

—

dBc

B

Sound subcarrier harmonics (Fp

+n∗Fs) Reference picture carrier.

—

−63

−40

dBc

C

Second harmonic of chroma subcarrier Using red EBU bar.

—

−54

—

dBc

C

Chroma/Sound intermodulation:

Fp

+ (Fsnd − Fchr)

Using red EBU bar.

—

−65

—

dBc

C

Out-of-band (UHF picture carrier)

spurious (Fo = 460 - 880MHz)

1/4

∗Fo, 1/2∗Fo,

3/4

∗Fo, 3/2∗Fo

Output measured from

40 MHz to 1 GHz.

—

12

30

dB

μV

C

3. Picture carrier harmonics are highly dependent on PCB layout and decoupling capacitors.

2nd harmonic

3rd harmonic

—

—

66

69

74

78

dB

μV

C

In band spurious (Fo @5MHz)

No video/sound modulation.

—

—

−65

dBc

C