Description
The TDA2595 is a monolithic integrated circuit intended for use in colour television receivers. Features Positive video input; capacitively coupled (source impedance < 200 Ω) Adaptive sync separator; slicing level at 50% of sync amplitude Internal vertical pulse separator with double slope integrator TDA2595 Output stage for vertical sync pulse or composite sync depending on the load; both are switched off at muting ϕ1 phase control between horizontal sync and oscillator Coincidence detector ϕ3 for automatic time-constant switching; overruled by the VCR switch Time-constant switch between two external time-constants or loop-gain; both controlled by the coincidence detector ϕ3 ϕ1 gating pulse controlled by coincidence detector ϕ3 Mute circuit depending on TV transmitter identification ϕ2 phase control between line flyback and oscillator; the slicing levels for ϕ2 control and horizontal blanking can be set separately Burst keying and horizontal blanking pulse generation, in combination with clamping of the vertical blanking pulse (three-level sandcastle) Horizontal drive output with constant duty cycle inhibited by the protection circuit or the supply voltage sensor Detector for too low supply voltage Protection circuit for switching off the horizontal drive output continuously if the input voltage is below 4 V or higher than 8 V Line flyback control causing the horizontal blanking level at the sandcastle output continuously in case of a missing flyback pulse Spot-suppressor controlled by the line flyback control QUICK REFERENCE DATA Supply voltage (pin 15) Sync pulse amplitude (positive video) Horizontal output current PACKAGE OUTLINE 18-lead DIL; plastic (SOT102); SOT102-1; 1997 January 07.
Key Features
- Positive video input; capacitively coupled (source impedance < 200 Ω)
- Adaptive sync separator; slicing level at 50% of sync amplitude
- Internal vertical pulse separator with double slope integrator TDA2595
- Output stage for vertical sync pulse or composite sync depending on the load; both are switched off at muting
- ϕ1 phase control between horizontal sync and oscillator
- Coincidence detector ϕ3 for automatic time-constant switching; overruled by the VCR switch
- Time-constant switch between two external time-constants or loop-gain; both controlled by the coincidence detector ϕ3
- ϕ1 gating pulse controlled by coincidence detector ϕ3
- Mute circuit depending on TV transmitter identification
- ϕ2 phase control between line flyback and oscillator; the slicing levels for ϕ2 control and horizontal blanking can be set separately
