TEA5101B STMicroelectronics, TEA5101B Datasheet - Page 5

• Manufacturer Part Number: TEA5101B
• Manufacturer: STMicroelectronics

Specifications of TEA5101B

• Single Supply Voltage (typ): Not RequiredV
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Specific Sites Compliant

APPLICATION INFORMATION
PC BOARD LAYOUT
The best performances of the high voltage video
amplifier will be obtained only with a carefully desi-
gned PC board. Output to input capacitances are
of particular importance.
For a single amplifier, the input-output capaci-
tance, in parallel with the relatively high feedback
resis-tance, creates a pole in the closed-loop trans-
fer function. A low parasitic capacitance (0.3pF)
feedbackresistor and HF isolated printed wires are
necessary. Further more, capacitive coupling from
the output of an amplifier toward the input of an-
other one may induce excessive crosstalk.
POWER DISSIPATION
The power dissipation consists of a static part and
a dynamic part. The static dissipation varies with
the output voltage. With V
typ(3.5W max) at V
and 3W typ at 50V (with R feedback = 39k ).
OUT
= 100V, 1.5W typ at 150V
DD
= 200V, P
stat
= 2.6W
V
The dynamic dissipation depends on the signal
spectrum and the load capacitance.
- Dynamic power with a typical picture with 150 V
- For a sine wave, dynamic dissipation peramplifier
The load capacitance C
capacitance (10pF), and amplifier output capaci-
tance (8pF) : total C
5MHZ, 50 V
tance, the maximum dynamic power is 2.5W.
- Generally, the maximum dynamic power is
- Typical value is about 2W.
Total dissipation is typically 3.6W (2.6W + 1W).
With a maximum static dissipation of 3.5W, total
dissipation is :
- 4.5W with a typical picture (UER pattern)
- 5.5W with white noise
OUT
modulation is typically 1W.
is P
reached with a white noise (tuner noise).
d
first value (100V) will be the reference.
= F x C
pp
l
sine wave and a 20pF load capaci-
x V
opp
L
x V
value is about 20pF. For a
L
dd
includes CRT and board
x 0.8.
TEA5101B
5/6
pp