STV2248H datasheet(31/86 Pages) STMICROELECTRONICS

31 / 86 page

STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS

31/86

Note 7: Measured from any input to output at f = 10 kHz with RL = 10k

W and Rg = 600W, Volume attenuation = 0dB.

4.4.17 AVL

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

4.5.1 Luminance & CVBS Inputs

4.5.2 Combined Chrominance & SVHS Selection Input

4.5.3 CVBS1 Output (Pin 29 - SDIP56)

S/N1

Signal to Noise Ratio from Exter-

nal Input

Measured at 0 dB attenuation,

Ext. Audio Input at 500 mVRMS,

CCIR 468-4 Weighted Quasi Peak

S/N2

Signal to Noise Ratio from Exter-

nal Input

Measured at 20 dB attenuation,

0 dB reference

Ext. Audio Input at 500 mVRMS

S/N3

Signal to Noise Ratio from FM

Demod

Measured at 20 dB attenuation,

FM: ± 27 kHz (Standards BGDKI)

SVRV

Supply Voltage Rejection from

External Input

Measured at f = 100 Hz from

VCC = 5 V and VCC = 8 V

Crosstalk

See Note 7

NOISE

Output Noise Level

CCIR 468-4 Weighted Quasi Peak

Volume at minimum

Volume at typical

Volume at maximum

100

120

µV

AFIN

Audio Input Level

Volume = -25 dB, THD < 1%

VRMS

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

GAVL

AVL Gain Control Range

(7-bit Resolution)

AVLMAX

Maximum attenuation

-15

Reg.AVL

Regulation amplitude

Measured at AUDIOOUT

Volume Control at maximum

0.55

VRMS

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

DCIN1

Black Level Voltage

Input selected on main CVBS output

3.3

VIN

CVBS or Y Input Voltage

1.41

VPP

-I

Negative Clamping Current

During SYNC pulse

µA

Positive Clamping Current

2.5

4.5

µA

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Chrominance Input Voltage

Burst Amplitude, 100/75 Color Bar

0.3

0.6

VPP

VCLIP

Input Amplitude before Clipping

VPP

VDC

DC Voltage

SVHS Mode

1.55

1.70

1.85

VTH

SVHS Threshold Voltage

0.50

0.90

1.45

ILOW

Output Current

0V at CHR Pin

150

µA

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VOUT

Dynamic Output Amplitude

1.5

VPP

RLOAD

Output Load Resistance

CVBS Bandwidth

VIN = 1 VPP

MHz

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