STV2238H 查看數據表（PDF） - STMicroelectronics

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STV2238H

I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR

STMicroelectronics 

STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS

Symbol

S/N1

S/N2

S/N3

SVRV

XT

NOISE

AFIN

Parameter

Signal to Noise Ratio from Exter-

nal Input

Signal to Noise Ratio from Exter-

nal Input

Signal to Noise Ratio from FM

Demod

Supply Voltage Rejection from

External Input

Crosstalk

Output Noise Level

Audio Input Level

Test Conditions

Measured at 0 dB attenuation,

Ext. Audio Input at 500 mVRMS,

CCIR 468-4 Weighted Quasi Peak

Measured at 20 dB attenuation,

0 dB reference

Ext. Audio Input at 500 mVRMS

Measured at 20 dB attenuation,

FM: ± 27 kHz (Standards BGDKI)

Measured at f = 100 Hz from

VCC = 5 V and VCC = 8 V

See Note 7

CCIR 468-4 Weighted Quasi Peak

Volume at minimum

Volume at typical

Volume at maximum

Volume = -25 dB, THD < 1%

Min. Typ. Max. Unit

75

dB

55 60

dB

52 55

dB

60

dB

70

dB

50 60

50 60

µV

100 120

2

VRMS

Note 7: Measured from any input to output at f = 10 kHz with RL = 10kW and Rg = 600W, Volume attenuation = 0dB.

4.4.17 AVL

Symbol

GAVL

AVLMAX

Reg.AVL

Parameter

AVL Gain Control Range

(7-bit Resolution)

Maximum attenuation

Regulation amplitude

Test Conditions

Measured at AUDIOOUT

Volume Control at maximum

Min. Typ. Max. Unit

20

dB

-15

dB

0.55

VRMS

4.5 CVBS, Y/C, RGB INPUTS AND CVBS OUTPUTS

4.5.1 Luminance & CVBS Inputs

Symbol

DCIN1

VIN

-I

I

Parameter

Black Level Voltage

CVBS or Y Input Voltage

Negative Clamping Current

Positive Clamping Current

Test Conditions

Min. Typ. Max. Unit

Input selected on main CVBS output

3.3

V

During SYNC pulse

1 1.41 VPP

20 27 35

µA

2.5 4.5 7

µA

4.5.2 Combined Chrominance & SVHS Selection Input

Symbol

V

VCLIP

VDC

VTH

ILOW

Parameter

Chrominance Input Voltage

Input Amplitude before Clipping

DC Voltage

SVHS Threshold Voltage

Output Current

Test Conditions

Burst Amplitude, 100/75 Color Bar

SVHS Mode

0V at CHR Pin

Min.

1

1.55

0.50

Typ.

0.3

1.70

0.90

Max.

0.6

1.85

1.45

150

Unit

VPP

VPP

V

V

µA

4.5.3 CVBS1 Output (Pin 29 - SDIP56)

Symbol

VOUT

RLOAD

Parameter

Dynamic Output Amplitude

Output Load Resistance

BW CVBS Bandwidth

Test Conditions

Register 1Dhex, data = 07hex

Register 1Dhex, data = 07hex

Register 1Dhex, data = 07hex

VIN = 1 VPP

Min.

3

Typ. Max.

1.5

10

Unit

VPP

kW

MHz

31/86

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