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TDA6101Q Folha de dados(PDF) 11 Page - NXP Semiconductors |
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TDA6101Q Folha de dados(HTML) 11 Page - NXP Semiconductors |
11 / 16 page 1995 Feb 07 11 Philips Semiconductors Preliminary specification Video output amplifier TDA6101Q TEST AND APPLICATION INFORMATION Dissipation Regarding dissipation, distinction must first be made between static dissipation (independent of frequency) and dynamic dissipation (proportional to frequency). The static dissipation of the TDA6101Q is due to high and low voltage supply currents and load currents in the feedback network and CRT. The static dissipation equals: Rfb = value of feedback resistor. Ioc = DC value of cathode current. P stat V DDL I DDL V DDH I DDH V oc I oc V fb V fb R fb -------- × – × + × + × = The dynamic dissipation equals: Pdyn =VDDH × (CL +Cfb +Cint) × fi × Vo(p-p) ×δ CL = load capacitance. Cfb = feedback capacitance (≈ 150 fF). Cint = internal load capacitance (≈ 4 pF). fi = input frequency. Vo(p-p) = output voltage (peak-to-peak value). δ = non-blanking duty-cycle (≈ 0.8). The IC must be mounted on the picture tube base print to minimize the load capacitance (CL). |
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