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BA7780 数据表(PDF) 10 Page - Rohm |
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BA7780 数据表(HTML) 10 Page - Rohm |
10 / 10 page •Operation notes Points to note regarding zoom operation When using a microprocessor to vary the voltages on pins 29 and 30 after presetting the electronic volume sensitivity and control volt- age range, and with the pin 27 and 28 voltage fixed at a certain level, it is possible to minimize drift in the zoom characteristics due to tempreature fluctuations and differences between individual ICs by setting the pin 27 and 28 voltages using resistive voltage divider circuits connected to the pin 4 regulator voltage output. 10 Video ICs BA7780KV •Electrical characteristic curves 29, 30pin CONTROL VOLTAGE: VCTL (V) – 20 0.1 – 15 – 10 – 5 0 0.6 1.1 1.6 2.1 28pin 1.64V 1.84V 1.94V 2.04V 28pin 1.64V 1.84V 1.94V 2.04V Ta = 25 °C 12 →13, 37→36pin 52 →13, 52→36pin 0 2.2 Fig. 4 Zoom control slope variation characteristics 4 27 28 Fig. 3 29, 30pin CONTROL VOLTAGE: VCTL (V) – 20 0.1 – 15 – 10 – 5 0 0.6 1.1 1.6 2.1 27pin 1.67V 1.87V 1.67V Ta = 25 °C 12 →13, 37→36pin 52 →13, 52→36pin 2.07V 1.87V 27pin 1.67V 0 2.2 Fig. 5 Zoom control position variation characteristics •External dimensions (Units: mm) VQFP64 48 33 32 17 16 1 49 64 10.0 ± 0.2 12.0 ± 0.3 0.2 ± 0.1 0.5 0.125 ± 0.1 0.10 |
类似零件编号 - BA7780 |
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类似说明 - BA7780 |
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