NXP Semiconductors TDA4504B
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.| Part No. | TDA4504B |
|---|---|
| Datasheet | TDA4504B Download |
| Manufacturer |  NXP Semiconductors |
| Description | Small signal combination for multistandard colour TV |
| Buy | Stock & Price |
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
TDA4504B Having the capability to demodulate IF signals with either positive or negative-going video information, 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.
