ELECTRICAL CHARACTERISTICS

Symbol

Parameter

Min.

Typ.

Max.

Unit

SUPPLY (Pin 1)

Supply Current

15

22

mA

Supply Voltage

9

10

10.5

V

VIDEO INPUT (Pin 20)

V20

Reference Voltage (I20 = -1

µA)

1.4

1.75

2

V

MWF

Minimum Width of Frame Pulse

(when synchronized with TTL signal)

50

µs

LINE OSCILLATOR (Pin 11)

LT11

Low Threshold Voltage

2.8

3.2

3.6

V

HT11

High Threshold Voltage

5.4

6.6

7.8

V

BI11

Bias Current

100

nA

DR11

Discharge Impedance

1.0

1.4

1.8

k

Ω

FLP1

Free Running Line Period

(R = 34.9k

62

64

66

µs

OT11

Oscillator Threshold for Line Output

Pulse Triggering

4.6

V

∆F

∆θ

Horizontal Frequency Drift with Temperature (see application)

2

Hz/

LINE OUTPUT (Pin 17)

LV17

1.1

1.6

V

OPW

Output Pulse width (line period = 64

µs)

26

28

30

µs

LINE SAWTOOTH INPUT (Pin 13)

V13

Bias Voltage

1.8

2.4

3.2

V

Z13

Input Impedance

4.5

5.8

8

k

Ω

PHASE DETECTOR (Pin 12)

I12

Output Current During Synchro Pulse

250

350

500

µA

RI12

Current Ratio (positive/negative)

0.95

1

1.05

LI12

Leakage Current

-2

+2

µA

CV12

Control RangeVoltage

2.60

7.10

V

FRAME BLANKING GENERATOR (Pin 8)

External R.C. Network (Typical values : R = 100k

Ω, C = 22nF)

1.35

ms

K8

Time Blanking Coefficient

0.588

0.613

0.644

- 0.2

1

µA

300

450

600

µA

FRAME OSCILLATOR (Pin 2)

LT2

Low Threshold Voltage

1.6

2.0

2.3

V

HT2

High Threshold Voltage

2.6

3.1

3.6

V

DIF2

LT2 - HT2

1.0

V

BI2

Bias Current

30

nA

DR2

Discharge Impedance

300

470

700

Ω

FFP1

Free Running Frame Period

(R = 866k

20.5

23

25

ms

MFP

Minimum Frame Period (I20 = -100

µA) with the Same RC

12.8

ms

FPR

Frame Period Ratio = FFP/MFP

1.7

1.8

1.9

TDA8218

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