MC44BS374T1/374T1A Advance Information

MC44BS374T1A High Frequency Characteristics

11 MC44BS374T1A High Frequency Characteristics

RF inputs/outputs into 75Ohm load.

NOTE:

Specifications only valid for envelope demodulation.

Table 3. High Frequency Characteristics

Parameter

Test Conditions

Min

Typ

Max

Unit

Type

TVOUT output level

Output signal from modulator section

See Figure 3. See Note 2

79

82

85

dB

µV

B

UHF oscillator frequency

460

-

880

MHz

A

VHF range

From UHF oscillator internally divided

45

-

460

MHz

B

TVOUT output attenuation

During transient output inhibit, or

when ATT bit is set to 1. See

Figure 3.

See Note 2

65

75

-

dBc

B

Sound subcarrier harmonics

(Fp

+n∗Fs)

Reference picture carrier. See Note 2

50

63

-

dBc

C

Second harmonic of chroma

subcarrier

Using red EBU bar. See Note 2

45

70

-

dBc

C

Chroma/Sound intermodulation:

Fp

+ (Fsnd - Fchr)

Using red EBU bar.See Note 2

65

82

-

dBc

C

Fo (picture carrier) harmonics

2nd harmonic: CH21

3rd harmonic: CH21

Other channels: See Figure 3.

See NOTE 1. See Note 2

-

-

38

58

50

70

dB

µV

C

Out band (picture carrier)

spurious

1/2

∗Fo - 1/4∗Fo - 3/2∗Fo - 3/4∗Fo

From 40MHz to 1GHz. See Note 2

-

-

10

dB

µV

C

In band spurious (Fo @5MHz)

No video sound modulation.See Note

2

65

75

-

dBc

C

Note:

1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.

Note:

2: See “Characterization Measurement Conditions” on page 15.

Freescale Semiconductor, Inc.

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