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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รายละเอียดสินค้า / Description ราคา / 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 Stock No. 912-6684
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ANZ
THB341.116
Each (In a Tube of 50)
Units
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 Stock No. 709-5389
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ANZ
THB409.42
Each
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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 Stock No. 523-7847
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ARZ
THB409.42
Each
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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 Stock No. 111-1182
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ARZ
THB341.116
Each (In a Tube of 98)
Units
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 Stock No. 759-1304
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ARZ-RL7
THB417.85
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 Stock No. 912-7476
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8310ARMZ
THB248.36
Each (In a Tube of 50)
Units
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 Stock No. 523-8137
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8310ARMZ
THB312.28
Each
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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 Stock No. 168-4174
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8307ARZ-RL7
THB461.80
Each (On a Reel of 750)
Units
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 Stock No. 157-8555
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8309ARUZ
THB468.086
Each (In a Tube of 96)
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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 Stock No. 523-7724
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8309ARUZ
THB561.72
Each
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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 Stock No. 108-303
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8364ACPZ-R2
THB403.67
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 Stock No. 497-1316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8304ARUZ
THB724.09
Each
Units
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 Stock No. 799-2805
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX2015EUA+
Brand :Maxim
THB409.11
Each
Units
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
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RS Stock No. 190-6350
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX4206ETE+
Brand :Maxim
THB247.50
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 Stock No. 100-3852
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LOG104AID
THB414.233
Each (In a Tube of 75)
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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 Stock No. 160-9966
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8364ACPZ-R2
THB392.124
Each (On a Reel of 250)
Units
Single 5 V - - 0.001MΩ - - Surface Mount LFCSP VQ 16 4 x 4 x 0.83mm 0.83mm 4mm +85 °C
RS Stock No. 709-6049
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD606JNZ
THB1,859.98
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 Stock No. 523-7853
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD8313ARMZ
THB617.56
Each
Units
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 Stock No. 145-1267
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AD606JNZ
THB1,688.58
Each (In a Tube of 25)
Units
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 Stock No. 121-9042
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LOG101AID
THB436.035
Each (In a Tube of 75)
Units
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.