TL441AM
LOGARITHMIC AMPLIFIER
SLFS038 – JUNE 1976 – REVISED FEBRUARY 1989 J PACKAGE
(TOP VIEW) Excellent Dynamic Range
Wide Bandwidth
Built-In Temperature Compensation
Log Linearity (30 dB Sections) . 1 dB Typ
Wide Input Voltage Range CA2
VCC –
CA2′
A1
Y
Y
A2
VCC + description
This monolithic amplifier circuit contains four
30-dB logarithmic stages. Gain in each stage is
such that the output of each stage is proportional
to the logarithm of the input voltage over the 30-dB
input voltage range. Each half of the circuit
contains two of these 30-dB stages summed
together in one differential output that is
proportional to the sum of the logarithms of the …
