Logarithmic Amplifiers

A Iogarithmic amplifier is a type of amplifier- an electronic device that increases the amount of electrical signals. It converts an input current into an output voltage (a flow of electrical current). Typically, the source of this current is a photodiode.

Why are logarithmic amplifiers used?

Logarithmic amplifiers are not only used to create voltage, they're also used to regulate gain (the ratio of two quantities). In the case of a logarithmic amplifier, this is the measurement of the output of a circuit or component in relation to its input.

By using a logarithmic amplifier you can also compress the range of signals in an electronic system because they provide an effective means of dealing with wide dynamic range signals. For example, a system with wide dynamic range may have poor signal-to-noise.

Where are logarithmic amplifiers used?

Logarithmic amplifiers are commonly used in high-speed electronic circuits. Because of their ability to compress signals, they remain a key component in many video, fibre, medical (blood analysis equipment), scientific (material analysers) and wireless systems.


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Beskrivning Pris Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Maximum Input Offset Voltage Maximum Input Resistance Rail to Rail Output Type Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Temperature
RS-artikelnummer 759-1304
Tillv. art.nrAD8307ARZ-RL7
VarumärkeAnalog Devices
123,05 kr
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Single 2.7 → 5.5 V - 500µV 1.1kΩ Rail to Rail Output Rail to Rail Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm +85 °C
RS-artikelnummer 157-8555
Tillv. art.nrAD8309ARUZ
VarumärkeAnalog Devices
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Single 3 V, 5 V - - 0.001MΩ Rail to Rail Output Differential Surface Mount TSSOP 16 5 x 4.4 x 1 mm, 5 x 4.4 x 1.05 mm 1.05mm 5mm +85 °C
RS-artikelnummer 108-303
Tillv. art.nrAD8364ACPZ-R2
VarumärkeAnalog Devices
104,64 kr
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Single 5 V - - 0.001MΩ - - Surface Mount LFCSP VQ 16 4 x 4 x 0.83mm 0.83mm 4mm +85 °C
RS-artikelnummer 145-1267
Tillv. art.nrAD606JNZ
VarumärkeAnalog Devices
496,75 kr
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Single 5 V - - 0.003MΩ - Differential Through Hole PDIP 16 20.07 x 6.35 x 3.3mm 3.3mm 20.07mm +70 °C
RS-artikelnummer 709-5389
Tillv. art.nrAD8307ANZ
VarumärkeAnalog Devices
120,05 kr
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Single 3 V, 5 V - 0.5mV 0.001MΩ Rail to Rail Output Rail to Rail Through Hole PDIP 8 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm +85 °C
RS-artikelnummer 523-7853
Tillv. art.nrAD8313ARMZ
VarumärkeAnalog Devices
177,33 kr
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Single 3 V, 5 V - - 0.001MΩ Rail to Rail Output Rail to Rail Surface Mount MSOP 8 3 x 3 x 0.85mm 0.85mm 3mm +85 °C
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RS-artikelnummer 190-6350
Tillv. art.nrMAX4206ETE+
VarumärkeMaxim Integrated
60,49 kr
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Dual, Single 2.7 → 11 V ±2.7 to ±5.5V 5mV - - - Surface Mount TQFN 16 4.1 x 4.1 x 0.75mm 0.75mm 4.1mm +85 °C
RS-artikelnummer 523-8137
Tillv. art.nrAD8310ARMZ
VarumärkeAnalog Devices
89,65 kr
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Single 3 V, 5 V - 1.5mV 0.001MΩ Rail to Rail Input - Surface Mount MSOP 8 3 x 3 x 0.85mm 0.85mm 3mm +85 °C
RS-artikelnummer 660-5418
Tillv. art.nrLOG101AID
VarumärkeTexas Instruments
144,86 kr
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Dual - ±12 V, ±15 V, ±5 V, ±9 V 1.5mV - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.58mm 4.9mm +75 °C
RS-artikelnummer 168-4174
Tillv. art.nrAD8307ARZ-RL7
VarumärkeAnalog Devices
85,385 kr
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Single 2.7 → 5.5 V - 500µV 1.1kΩ Rail to Rail Output Rail to Rail Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm +85 °C
RS-artikelnummer 709-6049
Tillv. art.nrAD606JNZ
VarumärkeAnalog Devices
533,85 kr
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Single 5 V - - 0.003MΩ - Differential Through Hole PDIP 16 20.07 x 6.35 x 3.3mm 3.3mm 20.07mm +70 °C
RS-artikelnummer 497-1316
Tillv. art.nrAD8304ARUZ
VarumärkeAnalog Devices
207,94 kr
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Single 5 V - 20mV 35MΩ Rail to Rail Output Rail to Rail Surface Mount TSSOP 14 5 x 4.4 x 1mm 1mm 5mm +85 °C
RS-artikelnummer 160-9966
Tillv. art.nrAD8364ACPZ-R2
VarumärkeAnalog Devices
94,177 kr
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Single 5 V - - 0.001MΩ - - Surface Mount LFCSP VQ 16 4 x 4 x 0.83mm 0.83mm 4mm +85 °C
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RS-artikelnummer 190-4319
Tillv. art.nrMAX4206ETE+
VarumärkeMaxim Integrated
52,375 kr
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Dual, Single 2.7 11 V ±2.7 to ±5.5V 5mV - - - Surface Mount TQFN 16 4.1 x 4.1 x 0.75mm 0.75mm 4.1mm +85 °C
RS-artikelnummer 523-7847
Tillv. art.nrAD8307ARZ
VarumärkeAnalog Devices
120,05 kr
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Single 3 V, 5 V - 0.5mV 0.001MΩ Rail to Rail Output Rail to Rail Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm +85 °C
RS-artikelnummer 799-2805
Tillv. art.nrMAX2015EUA+
VarumärkeMaxim Integrated
117,15 kr
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Single 2.7 → 5.25 V - - 0.02MΩ - Single Ended Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm +85 °C
RS-artikelnummer 912-8882
Tillv. art.nrAD8304ARUZ
VarumärkeAnalog Devices
177,676 kr
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Single 5 V - 20mV 35MΩ Rail to Rail Output Rail to Rail Surface Mount TSSOP 14 5 x 4.4 x 1mm 1mm 5mm +85 °C
RS-artikelnummer 912-6684
Tillv. art.nrAD8307ANZ
VarumärkeAnalog Devices
98,648 kr
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Single 3 V, 5 V - 0.5mV 0.001MΩ Rail to Rail Output Rail to Rail Through Hole PDIP 8 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm +85 °C
RS-artikelnummer 461-8302
Tillv. art.nrLOG104AID
VarumärkeTexas Instruments
143,62 kr
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Dual - ±12 V, ±15 V, ±5 V, ±9 V 1.5mV - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.58mm 4.9mm +85 °C
RS-artikelnummer 100-3853
Tillv. art.nrLOG112AID
VarumärkeTexas Instruments
142,167 kr
Each (In a Tube of 50)
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Dual - ±12 V, ±15 V, ±5 V, ±9 V 1mV - - - Surface Mount SOIC 14 8.65 x 3.91 x 1.58mm 1.58mm 8.65mm +85 °C
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A precise and versatile integrated circuit that offers ...
Description:
A precise and versatile integrated circuit that offers easy to use log ratio function. Able to compute the logarithm or log ratio of input current, this device is typically used in optical power meters and optical density measurement.