TDA4655 Просмотр технического описания (PDF) - Philips Electronics
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TDA4655 Datasheet PDF : 17 Pages
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Philips Semiconductors
Generic multi-standard decoder
Preliminary specification
TDA4655
FEATURES
• Low voltage (8 V)
• Low power dissipation (250 mW)
• Automatic standard recognition
• No adjustments required
• Reduced external components
• Not all time constants integrated (ACC, SECAM
de-emphasis).
GENERAL DESCRIPTION
The TDA4655 is a monolithic integrated multi-standard
colour decoder for PAL, SECAM and NTSC (3.58 and
4.43 MHz) with negative colour difference output signals.
It is adapted to the integrated baseband delay line
TDA4660/61.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
VP
supply voltage
IP
supply current
Ptot
total power dissipation
7.2 8.0 8.8 V
VP = 8.0 V; without load 25 31
37
mA
VP = 8.0 V; without load − 248 296 mW
Inputs
V11
chrominance input voltage (peak-to-peak value) note 1
V24
sandcastle input voltage
20 200
−−
400 mV
13.2 V
Outputs
V1
colour difference output signals
(peak-to-peak value)
independent of supply voltage; note 2
−(R−Y) output PAL and NTSC 4.43 MHz
442 525 624 mV
NTSC 3.58 MHz
370 440 523 mV
SECAM
950 1050 1150 mV
V3
−(B-Y) output PAL and NTSC 4.43 MHz
NTSC 3.58 MHz
559 665 791 mV
468 557 662 mV
SECAM
1200 1330 1460 mV
Notes to quick reference data
1. Within 2 dB output voltage deviation.
2. Burstkey width for PAL 4.3 µs, for NTSC 3.6 µs.
Burst width for PAL and NTSC 2.25 µs ratio burst chrominance amplitude 1/2.2.
ORDERING INFORMATION
EXTENDED
TYPE NUMBER
TDA4655
TDA4655T
PINS
24
24
PIN POSITION
SDIL
SO
Note
1. SOT234-1; 1996 November 26.
2. SOT137-1; 1996 November 26.
June 1993
PACKAGE
MATERIAL
plastic
plastic
2
CODE
SOT234 (1)
SOT137A (2)
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