TL441AMJB .. ,Logarithmic Amplifiermaximum ratings may cause permanent damage to the device. This is a stress rating only, andfunction ..
TL441CN ,Logarithmic Amplifiermaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltages ( ..
TL441CNSR ,Logarithmic Amplifier TL441 LOGARITHMIC AMPLIFIER SLVS328 – OCTOBER 2000N PACKAGE* Excellent Dynamic Range(TOP VIEW)* Wi ..
TL490CN , 10-STEP ADJUSTABLE ANALOG LEVEL DETECTOR
TL493CN , PULSE-WIDTH-MODULATION CONTROL CIRCUITS
TL494 ,Voltage mode PWM control circuit.Support &Product Order Tools &TechnicalCommunityFolder Now Documents SoftwareTL494SLVS074H–JANUARY ..
TLZ47 , Small Signal Zener Diodes
TLZ5V6B-GS08 , Small Signal Zener Diodes
TM1041S-L , TO-220F 10A Triac
TM1061S-L , TO-220F 10A Triac
TM1261M , Standard Triac
TM1261S , Standard Triac
TL441AMJ-TL441AMJB ..
Logarithmic Amplifier
Wide Input Voltage Range
descriptionThis 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
input voltages of the two stages. The four stages
may be interconnected to obtain a theoretical
input voltage range of 120-dB. In practice, this
permits the input voltage range to be typically
greater than 80-dB with log linearity of ± 0.5-dB
(see application data). Bandwidth is from dc to
40 MHz.
This circuit is useful in military weapons systems,
broadband radar, and infrared reconnaissance
systems. It serves for data compression and
analog compensation. This logarithmic amplifier
is used in log IF circuitry as well as video and log
amplifiers. The TL441AM is characterized for
operation over the full military temperature range
of – 55°C to 125°C.A2′CC +
CB2′
GNDB2′
GNDA2′
FK PACKAGE
(TOP VIEW)CNCC
NC — No internal connection B2
CC +
CC –
Y (Z)
Y (Z)
(B1)
CA2
(CB2)
CA2′
(CB2′)Y ∝ log A1 + log A2; Z ∝ log B1 + log B2
where: A1, A2, B1, and B2 are in dBV, 0 dBV = 1 V.
CA2, CA2′, CB2, and CB2′ are detector compensation inputs.
(B2)
functional block diagram (one half)
