ELECTRICAL CHARACTERISTICS

∆f= ±50kHz,

Volume attenuation = 0dB, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

SUPPLY

Supply Voltage

8

9

12.6

V

Supply Current

70

95

mA

IF AMPLIFIER

Input Sensitivity (RMS)

-3dB Video at Output

70

Differential Input Resistance

2

k

Ω

Differential Input Capacitance

2

pF

Gr

Gain Control Range

68

dB

Max Input Signal

+1dB Video at Output

180

SYNCHRONOUS VIDEO DEMODULATOR

Vision Carrier Capture

-1.4

1.6

MHz

AFC

S2

AFC Slope

See Figure 21

0.2

µA/kHz

DEMODULATED VIDEO OUTPUT (Pin 3)

Amplitude

Top Sync to White

2

2.3

2.6

BG vs L

Amplitude Difference

10

%

Top Sync Level

B/G and L

1.6

1.9

2.2

V

Zero Carrier Level

B/G

L

4.4

1.8

V

V

BW

Bandwidth

-3dB Video Signal

7

9

MHz

Dg

Differential Gain

6

8

%

Dp

Differential Phase

3

6

Degree

Vr3c

Residual Carrier Signal (RMS Value)

1

10

mV

Vr3h

Residual 2nd Harmonic (RMS Value)

1

10

mV

Internal Bias of Emitter Follower

3

5

mA

S/N

Signal to Noise Ratio

Note 1 - Weighted CCIR-567

56

61

dB

Intermodulation 1.07MHz

Note 2

52

dB

White Noise Threshold Voltage

4.85

V

White Noise Insertion Level

3.6

V

Black Noise Threshold Voltage

1.3

V

Black Noise Insertion Level

2.5

V

AGC CIRCUIT (BG MODE)

Charging Current

550

950

1300

µA

Discharge Current

12

20

28

µA

C/D

Charging/Discharging Ratio

45

Notes : 1.

S

N

= 20 log 10

RMS

)

at BW = 5MHz

2. Video carrier relative level = 0dB, Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22)

STV8224B

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