STV2246 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV2246

I²C bus-controlled multistandard single chip TV processor

STMicroelectronics 

STV224X, STV228X, STV223X - ELECTRICAL CHARACTERISTICS

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

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

75

dB

S/N2

Signal to Noise Ratio from Exter-

nal Input

Measured at 20 dB attenuation,

0 dB reference

Ext. Audio Input at 500 mVRMS

55 60

dB

S/N3

Signal to Noise Ratio from FM

Demod

Measured at 20 dB attenuation,

FM: ± 27 kHz (Standards BGDKI)

52 55

dB

SVRV

Supply Voltage Rejection from

External Input

Measured at f = 100 Hz from

VCC = 5 V and VCC = 8 V

60

dB

XT Crosstalk

See Note 7

70

dB

CCIR 468-4 Weighted Quasi Peak

NOISE Output Noise Level

) AFIN Audio Input Level

Volume at minimum

Volume at typical

Volume at maximum

Volume = -25 dB, THD < 1%

50 60

50 60

µV

100 120

2

VRMS

t(s Note 7: Measured from any input to output at f = 10 kHz with RL = 10kΩ and Rg = 600Ω, Volume attenuation = 0dB.

4.4.17 AVL

uc Symbol

d GAVL

ro AVLMAX

P 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

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

o 4.5.1 Luminance & CVBS Inputs

bs Symbol

DCIN1

O 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

t(s 4.5.2 Combined Chrominance & SVHS Selection Input

c Symbol

u V

rod VCLIP

VDC

P VTH

teILOW

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

le4.5.3 CVBS1 Output (Pin 29 - SDIP56)

o Symbol

Parameter

bs VOUT Dynamic Output Amplitude

Test Conditions

Register 1Dhex, data = 07hex

Min. Typ. Max. Unit

1.5 VPP

RLOAD Output Load Resistance

Register 1Dhex, data = 07hex

3

kΩ

BW CVBS Bandwidth

Register 1Dhex, data = 07hex

VIN = 1 VPP

10

MHz

31/86

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