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 Price 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庫存編號 100-3853
製造零件編號LOG112AID
HK$162.987
毎管:50 個
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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庫存編號 461-8318
製造零件編號LOG112AID
HK$173.76
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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庫存編號 121-9042
製造零件編號LOG101AID
HK$134.778
毎管:75 個
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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庫存編號 100-3852
製造零件編號LOG104AID
HK$124.712
毎管:75 個
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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庫存編號 812-2379
製造零件編號LOG114AIRGVT
HK$107.73
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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庫存編號 162-7761
製造零件編號LOG114AIRGVT
HK$76.913
個 (在毎卷:250)
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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