TDA4504B Datasheet, PDF (2/26 Pages) NXP Semiconductors – Small signal combination for multistandard colour TV

Philips Semiconductors
Small signal combination for multistandard colour TV
Product specification
TDA4504B
FEATURES
• Gain controlled vision IF amplifier
• Synchronous demodulator for negative and positive
demodulation
• AGC detector operating on peak sync amplitude for
negative demodulation and on peak white level for
positive demodulation
• Tuner AGC
• AFC circuit with two control polarities and on/off-switch
• Video preamplifier
• Video switch to select either the internal video signal or
an external video signal
• Horizontal oscillator and synchronization circuit with two
control loops
• Vertical synchronization (divider system), ramp
generator and driver with automatic amplitude
adjustment for 50 and 60 Hz
• Transmitter identification (mute)
• Sandcastle pulse generation
• VCR/auto VCR switch
• Start-up circuit
• Vertical guard
GENERAL DESCRIPTION
Having the capability to demodulate IF signals with either
positive or negative-going video information, the
TDA4504B (Fig.1) is contained within a 32 pin
encapsulation. It includes a three-stage vision IF amplifier,
mute circuit, AFC and AGC circuitry, fully synchronised
horizontal and vertical timebases with drive circuits and
integral three-level sandcastle pulse generator.
A functional colour tv receiver can thus be realized with the
addition of a tuner, audio demodulator and amplifier,
chroma decoder and respective line and field deflection
circuitry.
ORDERING INFORMATION
EXTENDED
TYPE NUMBER
TDA4504B
PINS
32
Note
1. SOT201-1; 1996 November 29
PIN POSITION
DIL
PACKAGE
MATERIAL
plastic
CODE
SOT201⁽¹⁾
February 1992
2