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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Part Details Brand 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 Width Minimum Operating Temperature
AD8313ARMZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Rail to Rail, 8-Pin MSOP Analog Devices 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 3mm -40 °C
AD8310ARMZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Input, 8-Pin MSOP Analog Devices 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 3mm -40 °C
MAX2015EUA+ Maxim, Log Amplifier, 2.7 → 5.25 V Single Ended, 8-Pin μMAX Maxim 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 3.05mm -40 °C
AD8307ARZ-RL7 Analog Devices, Log Amplifier, 2.7 → 5.5 V Rail to Rail Output Rail to Rail, 8-Pin SOIC Analog Devices 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 4mm -40 °C
AD8364ACPZ-R2 Analog Devices, Log Amplifier, 5 V, 16-Pin LFCSP VQ Analog Devices Single 5 V - - 0.001MΩ - - Surface Mount LFCSP VQ 16 4 x 4 x 0.83mm 0.83mm 4mm +85 °C 4mm -40 °C
AD606JNZ Analog Devices, Log Amplifier, 5 V Differential, 16-Pin PDIP Analog Devices Single 5 V - - 0.003MΩ - Differential Through Hole PDIP 16 20.07 x 6.35 x 3.3mm 3.3mm 20.07mm +70 °C 6.35mm 0 °C
AD8307ANZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Rail to Rail, 8-Pin PDIP Analog Devices 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 7.24mm -40 °C
AD8307ARZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Rail to Rail, 8-Pin SOIC Analog Devices 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 4mm -40 °C
AD8304ARUZ Analog Devices, Log Amplifier, 5 V Rail to Rail Output Rail to Rail, 14-Pin TSSOP Analog Devices 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 4.4mm -40 °C
AD8309ARUZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Differential, 16-Pin TSSOP Analog Devices 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 4.4mm -40 °C
LOG104AID Texas Instruments, Log Amplifier, 8-Pin SOIC Texas Instruments 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 3.91mm -40 °C
LOG101AID Texas Instruments, Log Amplifier, 8-Pin SOIC Texas Instruments 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 3.91mm -5 °C
LOG112AID Texas Instruments, Log Amplifier, 14-Pin SOIC Texas Instruments 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 3.91mm -40 °C
AD606JNZ Analog Devices, Log Amplifier, 5 V Differential, 16-Pin PDIP
  • € 111.96
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Analog Devices Single 5 V - - 0.003MΩ - Differential Through Hole PDIP 16 20.07 x 6.35 x 3.3mm 3.3mm 20.07mm +70 °C 6.35mm 0 °C
AD8304ARUZ Analog Devices, Log Amplifier, 5 V Rail to Rail Output Rail to Rail, 14-Pin TSSOP Analog Devices 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 4.4mm -40 °C
AD8307ANZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Rail to Rail, 8-Pin PDIP Analog Devices 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 7.24mm -40 °C
AD8307ARZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Rail to Rail, 8-Pin SOIC Analog Devices 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 4mm -40 °C
AD8307ARZ-RL7 Analog Devices, Log Amplifier, 2.7 → 5.5 V Rail to Rail Output Rail to Rail, 8-Pin SOIC
  • € 19.29
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Analog Devices 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 4mm -40 °C
AD8309ARUZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Output Differential, 16-Pin TSSOP Analog Devices 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 4.4mm -40 °C
AD8310ARMZ Analog Devices, Log Amplifier, 3 V, 5 V Rail to Rail Input, 8-Pin MSOP Analog Devices 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 3mm -40 °C
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