TL441AM

LOGARITHMIC AMPLIFIER

SLFS038 – JUNE 1976 – REVISED FEBRUARY 1989

4

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

CA2 CA2

′ VCC+ VCC–

Y

Y

Z

Z

CB2

GND

A1

A2

B1

B2

DVM

18 mV

100 mV

560 mV

DC

Power

Supply

VCC+ VCC–

Scale Factor

+

V

out(560 mV)

–V

out(18mV)

mV

30 dB

Error

+

VV

out(100 mV)

–0.5 V

out(560 mV)

–0.5 V

out(18 mV)

Scale Factor

CB2

′

Figure 3

CA2 CA2

′ VCC+ VCC–

Y

Y

Z

Z

CB2 CB2

′ GND

A1

A2

B1

B2

VCC+

VCC–

1000 pF

CI

CL

CL

100 mV

0 mV

Atten

Pulse

Generator

50

Ω

Tektronix

Sampling Scope

With Digital

Readout or

Equivalent

NOTES: A. The input pulse has the following characteristics: tw = 200 ns, tr ≤ 2 ns, tf ≤ 2 ns, PRR ≤ 10 MHz.

B. Capacitor CI consists of three capacitors in parallel: 1 µF, 0.1 µF, and 0.01 µF.

C. CL includes probe and jig capacitance.

Figure 4