STV2112B Ver la hoja de datos (PDF) - STMicroelectronics

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STV2112B

BUS-CONTROLLED PAL/SECAM TV PROCESSOR

STMicroelectronics 

STV2112B

ELECTRICAL CHARACTERISTICS (VCC = 9V, Tamb = 25oC, unless otherwise specified) (continued)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

PLL LOOP FILTER (Pin 4)

IC4 Control Current

IL4 Leakage Current

COLOR DIFFERENCE OUTPUT SIGNALS (Pins 40-41)

During burst gate window

400

µA

5

µA

PAL DEMODULATOR

VP40 R-Y Output signal Amplitude (Pin 40)

VP41 B-Y Output Signal Amplitude (Pin 41)

GPAL Gain Ratio of both Demodulators (B-Y)/(R-Y)

VPNDC Output Voltage when colour killed

SECAM DEMODULATORS

VS40 R-Y Output Signal Amplitude (Pin 40)

VS41 B-Y Output Signal Amplitude (Pin 41)

GSECAM Gain Ratio of both Demodulators (B-Y)/(R-Y)

VSDC Output Voltage when colour killed

PAL /SECAM MATRIX

G/R (G-Y)/(R-Y)

G/B (G-Y)/(B-Y)

|RED-BLUE| axes = 90o

100/75 colour bar

|RED-BLUE| axes = 90o

100/75 colour bar

|RED-BLUE| axes = 90o

100/75 colour bar

100/75 Colour Bar

100/75 Colour Bar

0.40 0.52 0.60 VPP

0.50 0.66 0.80 VPP

1.15 1.27 1.45 -

5.6 5.8 6.0 V

0.8 1.05 1.20 VPP

1.00 1.33 1.40 VPP

1.00 1.27 1.35 -

5.4 5.6 5.8 V

-0.6 -0.51 -0.4 -

-0.28 -0.19 -0.15 -

SATURATION CONTROL

SATMax.

SATNom.

SATMin.

Maximum Saturation Control (3F)

Nominal Saturation Control (20)

Minimum Saturation Control(00)

COLOUR DIFFERENCE INPUT SIGNALS (Pins 38-39)

1VPP CVBS on Pin 20

1VPP CVBS on Pin 20

1VPP CVBS on Pin 20

5

+6.5

8

dB

0

dB

-44

dB

DCRYI

DCBYI

VRYI

VBYI

ICL38-39

DC Voltage Pin 39

DC Voltage Pin 38

Input Signal Amplitude Pin 39

Input Signal Amplitude Pin 38

Clamping Current

No colour

No colour

100/75 color bar

100/75 color bar

During burst key

2.6 2.8 3.0 V

2.6 2.8 3.0 V

1.05

VPP

1.33

VPP

150

µA

SYNC. SEPARATOR

VSync Sync. Pulse Amplitude

On Pin 20

50 300

mV

HORIZONTAL OSCILLATOR

fH50

fRang

ffree

Frequency after Divider

Frequency Control Range

Free Running Frequency when PLL1 open

50Hz input signal

Low Frequency

High Frequency

Value 03hex

in register 0Ehex

15625

Hz

14500 14850 15200 Hz

16100 16300 16500 Hz

15000 15800

Hz

FIRST LOOP FILTER (Pin 33)

ILOW-33 Long Time Constant Output Current

IHIGH Short Time Constant Output Current

I V LOW Very Long Time Constant

SECOND CONTROL LOOP

0.12 0.15 0.18 mA

0.35 0.45 0.55 mA

0.02 0.03 0.05 mA

CRQ2

tshift

Control Range from Start of Horizontal

Output to Flyback

Horizontal Shift Range

Horizontal position

centered

2 to 14

µs

4

µs

12/24

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