TDA6108AJF Datasheet, PDF (10/16 Pages) NXP Semiconductors – Triple video output amplifier

Philips Semiconductors
TDA6108AJF
Triple video output amplifier
10.2 Switch-off behavior
The switch-off behavior of the TDA6108AJF is controllable. This is because the output
pins of the TDA6108AJF are still under control of the input pins for low power supply
voltages (approximately 30 V and higher).
10.3 Bandwidth
The addition of the flash resistor produces a decreased bandwidth and increases the rise
and fall times.
10.4 Dissipation
A distinction must first be made between static dissipation (independent of frequency) and
dynamic dissipation (proportional to frequency).
The static dissipation of the TDA6108AJF is due to voltage supply currents and load
currents in the feedback network and CRT.
The static dissipation P_stat equals: P_stat = V_DD × I_DD + 3 × V_oc × I_oc
Where:
V_DD = supply voltage
I_DD = supply current
V_oc = DC value of cathode output voltage
I_oc = DC value of cathode output current.
The dynamic dissipation P_dyn equals: P_dyn = 3 × V_DD × (C_L + C_int) × f_i × V_oc(p-p) × δ
Where:
C_L = load capacitance
C_int = internal load capacitance (≈4 pF)
f_i = input frequency
V_oc(p-p) = cathode output voltage (peak-to-peak value)
δ = non-blanking duty factor.
The TDA6108AJF must be mounted on the picture tube base print to minimize the load
capacitance.
9397 750 14729
Product data sheet
Rev. 03 — 20 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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