TLE2301 Datasheet, PDF (20/22 Pages) Texas Instruments – EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER

TLE2301
EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH
POWER OPERATIONAL AMPLIFIER
SLOS131 – DECEMBER 1993
APPLICATION INFORMATION
frequency compensation
The TLE2301 amplifier requires one compensation capacitor. However, when driving heavy loads, stability can
be increased by connecting V_{CC –} terminals 10 and 15 to V_{CC –} terminals 12 and 13 and using another capacitor
between COMP2 and the outputs. The circuit included in this application has been designed with two
compensation capacitors. The component values chosen are:
+ CF1 15 pF
+ CF2 33 pF
These component values could be adjusted if the amplifier is used for higher-frequency applications.
power dissipation
The impedance of the mains network fluctuates greatly for many reasons, but its impedance at the supply-
distribution transformer is typically very low, less than 1 Ω, whereas the mains impedance in a house commonly
has a higher value, from 4 Ω to 40 Ω. For utility-metering applications, a master transmitter may be sited at the
supply-distribution transformer and would need to deliver more power into the mains network than the
household transmitter when generating comparable signal amplitudes.
NE thermally-enhanced dual in-line package
The TLE2301 utilizes the four center terminals of the dual-in-line package (NE) to transfer heat to a copper area
on the PCB. A copper area of 1290 mm² provides a junction-to-ambient thermal impedance, Z_θJA, of 34°C / W,
allowing the device to dissipate up to 1.9 W at 85°C for a junction temperature of 150°C or up to 1.5 W at 85°C
for a junction temperature of 135°C.
JUNCTION-TO-AMBIENT THERMAL
IMPEDANCE
vs
DIMENSIONS
50
14 mm
45
40
d
35
5 mm
30
d
25
TLE2301
20
0
10
20
30
40
50
d – Dimensions – mm
NOTE: When d = 25 mm, Z_θJA = 34°C/ W
Figure 27. PCB Heatsink
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