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. 912-8882
FabrikantnummerAD8304ARUZ
FabrikantAnalog Devices
€ 17,887
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Aantal stuks
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. 912-6684
FabrikantnummerAD8307ANZ
FabrikantAnalog Devices
€ 9,54
Each (In a Tube of 50)
Aantal stuks
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. 497-1316
FabrikantnummerAD8304ARUZ
FabrikantAnalog Devices
€ 20,11
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Aantal stuks
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. 709-5389
FabrikantnummerAD8307ANZ
FabrikantAnalog Devices
€ 11,61
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Aantal stuks
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. 111-1182
FabrikantnummerAD8307ARZ
FabrikantAnalog Devices
€ 9,54
Each (In a Tube of 98)
Aantal stuks
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. 168-4174
FabrikantnummerAD8307ARZ-RL7
FabrikantAnalog Devices
€ 8,557
Each (On a Reel of 750)
Aantal stuks
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. 523-7847
FabrikantnummerAD8307ARZ
FabrikantAnalog Devices
€ 11,48
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Aantal stuks
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. 759-1304
FabrikantnummerAD8307ARZ-RL7
FabrikantAnalog Devices
€ 11,48
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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. 108-303
FabrikantnummerAD8318ACPZ
FabrikantAnalog Devices
€ 10,12
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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. 160-9966
FabrikantnummerAD8318ACPZ
FabrikantAnalog Devices
€ 9,108
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Aantal stuks
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
€ 7,18
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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. 523-8137
FabrikantnummerAD8310ARMZ
FabrikantAnalog Devices
€ 8,67
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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. 812-2379
FabrikantnummerLOG114AIRGVT
€ 9,73
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Dual, Single 5 V ±5V 4V - - Differential Surface Mount VQFN 16 4.15 x 4.15 x 0.95mm 0.95mm 4.15mm +70 °C
RS-stocknr. 190-4319
FabrikantnummerMAX4206ETE+
FabrikantMaxim Integrated
€ 4,814
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
RS-stocknr. 190-6350
FabrikantnummerMAX4206ETE+
FabrikantMaxim Integrated
€ 5,505
Each (In a Pack of 2)
Aantal stuks
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. 461-8318
FabrikantnummerLOG112AID
€ 16,00
Each
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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. 162-7761
FabrikantnummerLOG114AIRGVT
€ 6,931
Each (On a Reel of 250)
Aantal stuks
Dual, Single 5 V ±5V 4V - - Differential Surface Mount VQFN 16 4.15 x 4.15 x 0.95mm 0.95mm 4.15mm +70 °C
RS-stocknr. 709-6049
FabrikantnummerAD606JNZ
FabrikantAnalog Devices
€ 54,49
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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. 912-7472
FabrikantnummerAD8313ARMZ
FabrikantAnalog Devices
€ 14,918
Each (In a Tube of 50)
Aantal stuks
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
RS-stocknr. 660-5418
FabrikantnummerLOG101AID
€ 14,19
Each
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
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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.