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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Description Prix 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
N° de stock RS 523-7724
Référence fabricantAD8309ARUZ
14,31 €
Each
Unité
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
N° de stock RS 121-9042
Référence fabricantLOG101AID
12,217 €
Each (In a Tube of 75)
Unité
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
N° de stock RS 709-5389
Référence fabricantAD8307ANZ
10,78 €
Each
Unité
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
N° de stock RS 100-3852
Référence fabricantLOG104AID
11,728 €
Each (In a Tube of 75)
Unité
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
N° de stock RS 168-4174
Référence fabricantAD8307ARZ-RL7
8,10 €
Each (On a Reel of 750)
Unité
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
N° de stock RS 523-7853
Référence fabricantAD8313ARMZ
17,97 €
Each
Unité
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
N° de stock RS 523-8137
Référence fabricantAD8310ARMZ
9,27 €
Each
Unité
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
N° de stock RS 523-7847
Référence fabricantAD8307ARZ
11,70 €
Each
Unité
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
N° de stock RS 190-6350
Référence fabricantMAX4206ETE+
5,18 €
Each (In a Pack of 2)
Unité
Dual, Single 2.7 →11 V ±2.7 → ±5.5V 5mV - - - Surface Mount TQFN 16 4.1 x 4.1 x 0.75mm 0.75mm 4.1mm +85 °C
N° de stock RS 812-2379
Référence fabricantLOG114AIRGVT
9,76 €
Each
Unité
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
N° de stock RS 190-4319
Référence fabricantMAX4206ETE+
4,346 €
Each (In a Tube of 75)
Unité
Dual, Single 2.7 → 11 V ±2.7 → ±5.5V 5mV - - - Surface Mount TQFN 16 4.1 x 4.1 x 0.75mm 0.75mm 4.1mm +85 °C
N° de stock RS 162-7761
Référence fabricantLOG114AIRGVT
6,363 €
Each (On a Reel of 250)
Unité
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
N° de stock RS 497-1316
Référence fabricantAD8304ARUZ
20,38 €
Each
Unité
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
N° de stock RS 759-1304
Référence fabricantAD8307ARZ-RL7
11,70 €
Each
Unité
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
N° de stock RS 461-8318
Référence fabricantLOG112AID
15,44 €
Each
Unité
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
N° de stock RS 100-3853
Référence fabricantLOG112AID
13,603 €
Each (In a Tube of 50)
Unité
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
N° de stock RS 709-6049
Référence fabricantAD606JNZ
49,45 €
Each
Unité
Single 5 V - - 0.003MΩ - Differential Through Hole PDIP 16 20.07 x 6.35 x 3.3mm 3.3mm 20.07mm +70 °C