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 497-1316
製造零件編號AD8304ARUZ
TWD835.00
單位
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庫存編號 190-4319
製造零件編號MAX4206ETE+
TWD171.70
毎管:75 個
單位
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
RS庫存編號 461-8318
製造零件編號LOG112AID
TWD607.00
單位
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 523-7847
製造零件編號AD8307ARZ
TWD457.00
單位
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庫存編號 812-2379
製造零件編號LOG114AIRGVT
TWD376.00
單位
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 523-7853
製造零件編號AD8313ARMZ
TWD722.00
單位
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庫存編號 121-9042
製造零件編號LOG101AID
TWD512.90
毎管:75 個
單位
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 168-4174
製造零件編號AD8307ARZ-RL7
TWD291.50
個 (在毎卷:750)
單位
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庫存編號 709-5389
製造零件編號AD8307ANZ
TWD437.00
單位
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庫存編號 162-7761
製造零件編號LOG114AIRGVT
TWD245.20
個 (在毎卷:250)
單位
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 100-3853
製造零件編號LOG112AID
TWD535.00
毎管:50 個
單位
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 523-8137
製造零件編號AD8310ARMZ
TWD365.00
單位
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庫存編號 523-7724
製造零件編號AD8309ARUZ
TWD626.00
單位
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庫存編號 190-6350
製造零件編號MAX4206ETE+
TWD214.50
/個 (每包:2個)
單位
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
RS庫存編號 709-6049
製造零件編號AD606JNZ
TWD2,007.00
單位
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庫存編號 100-3852
製造零件編號LOG104AID
TWD470.80
毎管:75 個
單位
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 759-1304
製造零件編號AD8307ARZ-RL7
TWD446.00
單位
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