TLE2301

EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH

POWER OPERATIONAL AMPLIFIER

SLOS131 – DECEMBER 1993

20

POST OFFICE BOX 655303

APPLICATION INFORMATION

frequency compensation

The TLE2301 amplifier requires one compensation capacitor. However, when driving heavy loads, stability can

between COMP2 and the outputs. The circuit included in this application has been designed with two

compensation capacitors. The component values chosen are:

C

F1 +

15 pF

C

F2 +

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

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.

14 mm

5 mm

d

d

TLE2301

35

30

25

20

010

20

30

40

45

JUNCTION-TO-AMBIENT THERMAL

IMPEDANCE

vs

DIMENSIONS

50

40

50

d – Dimensions – mm

NOTE: When d = 25 mm, Z

θJA = 34°C/W

Figure 27. PCB Heatsink