NXP Semiconductors TDA4691
The TDA4691 is a bipolar integrated circuit for sync processing in 50/100 and 60/120 Hz TV sets, preferably in conjunction with the programmable deflection controller TDA9150. The device can be assembled in a DIL20 or SO20 package.| Part No. | TDA4691 |
|---|---|
| Datasheet | TDA4691 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Sync Processor |
| Buy | Stock & Price |
FEATURES
● Sync processor for horizontal (H) and vertical (V) sync pulses generated by internal 13.5 MHz oscillator● Stable ‘On Screen Display (OSD)’, if no input signal is present with free running internal oscillator; automatic turn over to locked oscillator, if input signal is available
● External clock oscillator can be used
● Standard 50/60 Hz signals are identified automatically
● Additional outputs for 13.5 MHz, composite sync, 50//60 Hz identification, signal identification (mute), super-sandcastle 12 V
● TTL compatible outputs (H, V, composite sync and 13.5 MHz)
● 3 different time constants for the PHI1 PLL: fast, normal and slow (T1, T2 and T3). Fast and normal time constant are set independent from each other
● Start of H-pulse definable by application
● Digital interference reduction for H and V signals
● Digital noise detector
● Time correction of non-standard H-pulses and equalizing pulses for optimum PLL control.
GENERAL DESCRIPTION
A line locked 13.5 MHz clock with several dividers and logic circuitry is available generating the horizontal and vertical sync outputs.
