ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Pins

Test conditions

Min.

Typ.

Max.

Unit

SUPER SANDCASTLE GENERATOR (continued)

Burst Pulse Duration

21

21

q

50Hz

q

60Hz

4.4

3.9

µs

µs

Line Blanking Duration

22

Fixed by flyback

Signal pin 22

Frame Blanking Duration

21

Fixed by the logic

21

Line

FRAME SAW-TO OTH GENERATOR

Low DC Voltage

24

1.3

V

Discharge Current

1

15

60

mA

60Hz Internal

1

8

µA

FRAME LOGIC SYNCH.

Free Running Period

1-24

Without video signal

315

Line

Synchronization Windows

Identification low

Identification 50Hz high

Identification 60Hz high

VCR mode

247

309

247

247

361

315

277

361

Line

Line

Line

Line

FRAME SAFETY INPUT

Switching Threshold

15

Actived without negative pulse

during frame blanking time.

1.3

V

Output current

40

50

67

µA

S.M.P.S.

Input Current

10

2

µA

Transfer Characteristic

∆t

1.9

µs/µV

11

28

µs

11

1

µs

High Level Voltage

11

Ω

9V

SOFT- START

and S.M.P.S.

13

7

7.4

V

Switch-off Voltage For Line

and S.M.P.S. Output

13

6.5

V

Discharge Current

9

q

q

60

2.3

µA

µA

CURRENT REFERENCE

18

Ω (1%)

1.21

1.3

1.39

V

Temperature Shift

18

± 1

%

GENERAL DESCRIPTION

Introduction

This integrated circuit uses high density I2L bipolar

technologyand combines analog signal processing

with digital processing.

Timing signals are obtained from a voltage-control-

led oscillator (VCO) operating at 500kHz by means

of a cheap ceramic resonator. This avoid the fre-

quency adjustment normally required with line and

frame oscillators.

A chain of dividers and appropriate logic circuitry

produces very accurate defined sampling pulses

and the necessary timing signals.

Internal Functions

- Horizontal scanning processor

- Frame scanning processor

- B class frame output stage using an external

power amplifier with flyback generator

- Line and frame synchronization separation

- Dual phase-locked loop horizontal scanning

TEA2128

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