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TEA2028B 数据表(PDF) 5 Page - STMicroelectronics |
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TEA2028B 数据表(HTML) 5 Page - STMicroelectronics |
5 / 9 page ELECTRICAL OPERATING CHARACTERISTICS (continued) Tamb =25 oC, VCC = 12V (unless otherwise noted) Pulse duration at 50% of the ampifier Symbol Parameter Min. Typ. Max. Unit FRAME SYNCHRO ADJUSTMENT (Pin 20) (V20 = 2.5V) I20H High Output Current (V27 = 12V) 7.2 µA I20L Low Output Current (V27 = 0V) – 2.8 µA VCO (Pins 17-18 and 19) Frequency control range after line divider (ceramic resonator : 503kHz) 15.30 to 16.10 kHz PHASE COMPARATOR ϕ 1 (Pin 22) Output Current Low Loop Gain ± 0.35 ± 0.50 ± 0.65 mA Output Current High Loop Gain ± 1 ± 1.5 ± 2mA Window Pulse Width 7 10 13 µs VCR SWITCHING (Pin 23) Threshold Voltage VCR Operating 1.7 2.2 2.7 V I23 Input Current (V23 =0, VCC = 12V) -0.030 -0.25 -1 mA VIDEO IDENTIFICATION (Pin 24) V24 Output Saturation Voltage (without video signal, I24 = 3mA) 0.2 0.6 V V24 Output Voltage (with 60Hz video signal, I24 = 2.5mA) 5 6.5 7.5 V V24 Output Voltage (with 50Hz video signal, I24 =10 µA) 11.0 11.5 V VIDEO IDENTIFICATION (Pin 25) I25 Output Current (charging the capacitor) 0.5 0.75 1 mA t25 Identification Time (charging the capacitor) 1.3 1.7 2.2 µs V25 Threshold (voltage changing from lower to higher value) 4 4.5 5 V LHYS Hysteresis 350 mV H-RAMP GENERATOR (Pin 13) Ich13 Charge Current 185 200 215 µA VI13 Base Voltage of Saw-tooth 0.5 V Idis13 Discharge Current 3.5 7.0 mA SUPER SANDCASTLE (Pin 11) VB11 Burst key pulse level Output Voltage (I11 = – 5mA) 9 V VL11 Line Blanking Pulse Level Output Voltage (I11 = – 5mA) 4 4.5 5 V VBT11 Frame Blanking Pulse Level Output Voltage (and frame out of function) (I11 = – 5mA) 2 2.5 3 V SUPER SANDCASTLE TB11 Delay between middle of synch pulse (Pin 27) and leading edge of burst key pulse 2.3 3.0 µs Duration of burst key pulse 3.7 4 5 TO11 Delay Between SSC Cutting Level at Pin 12 and Line Blanking Pulse 0.35 Frame Blanking Time (start with reset of frame divider) 21 Line POSITIVE LINE FLY BACK INPUT (Pin 12) Delay between middle of synch pulse and middle of line retrace 2.1 2.6 3.1 µs Threshold for SMPS Safety 1.1 V VbI12 Threshold for Blanking 0.3 V Vϕ12 Threshold for PLL2 3 V I12 Input Current – 0.4 V < V12 <VbI12 -20 µA I12 Input Current VbI12 < V12 <V ϕ12 -10 µA I12 Input Current Vϕ12 <V12 <VCC 01 µA TEA2028B 5/9 |
类似零件编号 - TEA2028B |
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类似说明 - TEA2028B |
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