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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Omschrijving Prijs 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-stocknr. 157-8555
FabrikantnummerAD8309ARUZ
FabrikantAnalog Devices
13,076 €
Each (In a Tube of 96)
Aantal stuks
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-stocknr. 523-7724
FabrikantnummerAD8309ARUZ
FabrikantAnalog Devices
15,93 €
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Aantal stuks
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-stocknr. 523-7847
FabrikantnummerAD8307ARZ
FabrikantAnalog Devices
11,48 €
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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-stocknr. 660-5418
FabrikantnummerLOG101AID
14,01 €
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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-stocknr. 709-6049
FabrikantnummerAD606JNZ
FabrikantAnalog Devices
51,63 €
Each
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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-stocknr. 145-1267
FabrikantnummerAD606JNZ
FabrikantAnalog Devices
46,882 €
Each (In a Tube of 25)
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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-stocknr. 497-1316
FabrikantnummerAD8304ARUZ
FabrikantAnalog Devices
20,11 €
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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-stocknr. 799-2805
FabrikantnummerMAX2015EUA+
FabrikantMaxim Integrated
11,33 €
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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-stocknr. 160-9966
FabrikantnummerAD8364ACPZ-R2
FabrikantAnalog Devices
9,108 €
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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-stocknr. 461-8318
FabrikantnummerLOG112AID
16,00 €
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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
RS-stocknr. 912-6684
FabrikantnummerAD8307ANZ
FabrikantAnalog Devices
9,54 €
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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-stocknr. 165-9523
FabrikantnummerMAX2015EUA+
FabrikantMaxim Integrated
8,413 €
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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-stocknr. 461-8302
FabrikantnummerLOG104AID
14,18 €
Each
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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
Nieuw
RS-stocknr. 190-4319
FabrikantnummerMAX4206ETE+
FabrikantMaxim Integrated
5,065 €
Each (In a Tube of 75)
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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
Nieuw
RS-stocknr. 190-6350
FabrikantnummerMAX4206ETE+
FabrikantMaxim Integrated
5,85 €
Each (In a Pack of 2)
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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-stocknr. 108-303
FabrikantnummerAD8364ACPZ-R2
FabrikantAnalog Devices
10,12 €
Each
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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-stocknr. 912-7476
FabrikantnummerAD8310ARMZ
FabrikantAnalog Devices
6,899 €
Each (In a Tube of 50)
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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-stocknr. 759-1304
FabrikantnummerAD8307ARZ-RL7
FabrikantAnalog Devices
11,48 €
Each
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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-stocknr. 121-9042
FabrikantnummerLOG101AID
12,348 €
Each (In a Tube of 75)
Aantal stuks
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-stocknr. 523-8137
FabrikantnummerAD8310ARMZ
FabrikantAnalog Devices
8,67 €
Each
Aantal stuks
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
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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.