TEA2029 STMICROELECTRONICS [STMicroelectronics], TEA2029 Datasheet - Page 4

• Manufacturer Part Number: TEA2029
• Description: APPLICATION NOTE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

TEA2028 - TEA2029 APPLICATION NOTE
Figure 1
II - MAIN FUNCTIONS
- Detection and extraction of line and frame syn-
- Horizontal scanning control and synchronization
- Video identification.
- 50 or 60Hz standard recognition for vertical scan-
- Generation of a self-synchronized frame saw-
- Line time constant switching for VCR operation
- Control and regulation of a primary-connected
- Overall TV set protection input
- Frame blanking and super sandcastle output sig-
- Frame blanking safety input for CRT protection in
III - PIN CONNECTIONS
4/46
Pin
Mains
chronization pulses from the composite video
signal.
by two phase-locked loop devices.
ning.
tooth for 50/60Hz standards.
through an input labeled ”VCR” (Video Cassette
Recorder).
switching power supply by on-chip controller de-
vice combining :
nals
case of vertical stage failure.
Input
1
2
3
4
5
6
an error amplifier
a pulse width modulator synchronized on line
frequency
a start-up and protection system
Horizontal output monostable capacitor
Frame blanking safety input
Frame saw-tooth output
Frame blanking output
Frame ramp generator
Power ground
Power Supplies
CONNECTED
Miscellaneous
PRIMARY
SMPS
Description
MISCELLANEOUS
CONTROLLER
FUNCTIONS
SMPS
UHF
UHF
SEPARATOR
TEA2028B
SEPARATOR
SYNC
I.F.
Video Signal
Package : DIP28
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
7
8
9
HORIZONTAL
TIME BASE
TIME BASE
VERTICAL
PICTURE
SOUND
SMPS control output
Supply voltage (V
SMPS regulation input
Horizontal output
Super-sandcastle output
Horizontal flyback input
Horizontal saw-tooth generator
Current reference
SMPS soft-start and safety time constant
capacitor
(and horizontal phase adjustment)
V
V
V
Frame sync time constant adjustment capacitor
Substrate Ground
VCR switching input
Video and 50/60Hz identification output (Mute)
Video identification capacitor
Horizontal sync detection capacitor
(50% of peak to peak sync level)
Video input
Safety input
2 phase comparator capacitor
1 phase comparator capacitor
I.F.
I.F.
CO
CO
CO
phase shift network
output
input
DETECTION
DETECTION
PICTURE
SOUND
POWER AMP.
HORIZONTAL
POWER AMP.
VERTICAL
CC
Description
)
DECODING
Miscellaneous
Power Supplies
COLOR