STV2247H View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STV2247H

I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR

STMicroelectronics 

STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS

4.4.12 AM Demodulator

Symbol

AFOUT

AMlowco

AMhighco

AMthd

AMs/n

AMsvr

Parameter

AM Audio Output Amplitude at AM/

FMOUT Pin

Low Cut-off Frequency

High Cut-off Frequency

Total Harmonic Distortion

Signal/Noise Ratio

Supply Voltage Rejection

Test Conditions

54% modulation

-3 dB compared AFout

-3 dB compared AFout

54% modulation

Weighted according to CCIR468-4

Quasi-Peak

See Note 4

4.4.13 SIF Output (AM/FM or Sound Subcarriers Output)

Symbol

SIFout

SIFbw

SIF dcout

Parameter

Output Level

Bandwidth

DC Output Level

SIFres Residual Carrier

SIFcur Sink Output Current

Test Conditions

Sound subcarriers

Sound subcarriers

Fundamental wave (38.9 MHz) and

harmonics

AM or FM demod. output selected

Sound subcarriers output selected

4.4.14 SAW Filter Switch Output (TQFP64 only)

Symbol

SAW low

SAWcur

SAW high

Parameter

Low Output Voltage

Maximum allowed Current

High Output Voltage

Test Conditions

ISINK = 2 mA

ISOURCE = 2 mA

4.4.15 External Audio Input

Symbol

RIN

VIDC

AFIN

Parameter

Input Resistance

DC Input Voltage

maximum Audio Input Signal

Test Conditions

4.4.16 Main Audio Output

(See Figure 17 on page 42 and Figure 18 on page 42)

Symbol

AMax

AMin

ASTEP

DCSH

VODC

AFDIFF

ROUT

BWO

THD_AM

Parameter

Maximum Attenuation (Audio Out/

AM-FM Out)

Minimum Attenuation (Audio Out/

AM-FM Out)

Step Resolution

DC Output Shift

DC Output Level

Audio Amplitude difference

between sources

Output Resistance

Output Bandwidth

Total Harmonic Distortion

Test Conditions

Register 05hex, data = 7Fhex

VIN = 1 VRMS, f = 1 kHz,

Register 05hex, data = 00hex

reg 05, d7 = 0

From max. volume to min. volume

f = 1 kHz, fM = ±27 kHz,

Ext. Audio Input = 500 mVRMS

VIN = 1 VRMS, f = 1 kHz

Min. Typ. Max. Unit

400 500 630 mVRMS

40 Hz

30

kHz

2

%

55

dB

20

dB

Min.

7.5

Typ.

150

4

Max. Unit

mVRMS

MHz

V

0.4

mVRMS

0.5

1.5

mA

Min. Typ Max. Unit

0.4

V

2

mA

4

V

Min.

70

2

Typ.

100

2.4

Max.

130

Unit

kW

V

VRMS

Min. Typ. Max. Unit

78

dB

-1

0

1

dB

0.7

dB

50 mV

4

V

2

dB

110

W

1

MHz

0.1 0.3 %

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