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LOG200

AKTIV

Logarithmischer Hochgeschwindigkeits-Präzisionsverstärker mit Photodiodenvorspannung und Dunkelst

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Datenblatt

LOG200

AKTIV
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Produktdetails

Input current range (min) (nA) 0.1 Input current range (max) (mA) 10 Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 4.5 Vs (±) (max) (V) 12.6 Iq (max) (mA) 9 Dynamic range (typ) (dB) 160 Reference type Int Auxiliary op amps 1 Full-scale output voltage (min) (±V) 4.8 Full-scale output voltage (max) (±V) 12.3 Conformity error (initial 5 decades) (max) (%) 1.5 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog
Input current range (min) (nA) 0.1 Input current range (max) (mA) 10 Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 4.5 Vs (±) (max) (V) 12.6 Iq (max) (mA) 9 Dynamic range (typ) (dB) 160 Reference type Int Auxiliary op amps 1 Full-scale output voltage (min) (±V) 4.8 Full-scale output voltage (max) (±V) 12.3 Conformity error (initial 5 decades) (max) (%) 1.5 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3
  • Ultra-fast transient response to low current levels:
    • Settling time for 10nA to 100nA step: 240ns rising, 620ns falling (typ)
    • Settling time for 100nA to 1µA step: 60ns rising, 150ns falling (typ)
  • Wide dynamic range: 10pA to 10mA (180dB)
    • Specified from 100pA to 10mA (160dB)
  • High signal bandwidth:
    • 20MHz at 10µA to 10mA
    • 6.3MHz at 1µA
    • 90kHz at 1nA
  • High-accuracy transfer function:
    • 0.2% max log conformity error (10nA to 100µA)
  • Integrated reference current (1µA) and reference voltages (2.5V and 1.65V)
  • Additional auxiliary high-speed op amp for differential ADC drive, single-ended gain or filter blocks, and other peripheral functions
  • Single supply (4.5V to 12.6V) or dual supply (±2.25V to ±6.3V) operation
  • Specified temperature range: –40°C to +125°C
  • Small package options:
    • 3mm × 3mm VQFN
    • 1.6mm x 1.6mm DSBGA (Preview)
  • Ultra-fast transient response to low current levels:
    • Settling time for 10nA to 100nA step: 240ns rising, 620ns falling (typ)
    • Settling time for 100nA to 1µA step: 60ns rising, 150ns falling (typ)
  • Wide dynamic range: 10pA to 10mA (180dB)
    • Specified from 100pA to 10mA (160dB)
  • High signal bandwidth:
    • 20MHz at 10µA to 10mA
    • 6.3MHz at 1µA
    • 90kHz at 1nA
  • High-accuracy transfer function:
    • 0.2% max log conformity error (10nA to 100µA)
  • Integrated reference current (1µA) and reference voltages (2.5V and 1.65V)
  • Additional auxiliary high-speed op amp for differential ADC drive, single-ended gain or filter blocks, and other peripheral functions
  • Single supply (4.5V to 12.6V) or dual supply (±2.25V to ±6.3V) operation
  • Specified temperature range: –40°C to +125°C
  • Small package options:
    • 3mm × 3mm VQFN
    • 1.6mm x 1.6mm DSBGA (Preview)

The LOG200 is a wide-dynamic-range current-to-voltage amplifier specifically designed to optimize current measurements across 160dB of dynamic range with unparalleled accuracy and speed for optical communications, medical diagnostics, and industrial process-control measurements. The LOG200 features two logarithmic amplifiers followed by a high-accuracy differential amplifier that convert current signals into a voltage representing the log-compressed ratio of the two currents. The current inputs are designed to feature a high-speed response from one input, and a highly accurate reference signal on the other input, allowing for a unique combination of fast transient response and high logarithmic conformity.

The LOG200 ratio is internally set to 250mV/decade of current-to-voltage conversion. The device integrates an uncommitted high-speed amplifier to allow the output to be configured for differential or filtered responses, with a fast settling time to drive successive approximation analog-to-digital converters (SAR ADCs). The LOG200 also features a separate reference current and reference voltage designed to configure the device for optimized input current and common-mode voltages.

The LOG200 can be powered in a single-supply (4.5V to 12.6V) or dual-supply (±2.25V to ±6.3V) configuration and is specified from –40°C to +125°C.

The LOG200 is a wide-dynamic-range current-to-voltage amplifier specifically designed to optimize current measurements across 160dB of dynamic range with unparalleled accuracy and speed for optical communications, medical diagnostics, and industrial process-control measurements. The LOG200 features two logarithmic amplifiers followed by a high-accuracy differential amplifier that convert current signals into a voltage representing the log-compressed ratio of the two currents. The current inputs are designed to feature a high-speed response from one input, and a highly accurate reference signal on the other input, allowing for a unique combination of fast transient response and high logarithmic conformity.

The LOG200 ratio is internally set to 250mV/decade of current-to-voltage conversion. The device integrates an uncommitted high-speed amplifier to allow the output to be configured for differential or filtered responses, with a fast settling time to drive successive approximation analog-to-digital converters (SAR ADCs). The LOG200 also features a separate reference current and reference voltage designed to configure the device for optimized input current and common-mode voltages.

The LOG200 can be powered in a single-supply (4.5V to 12.6V) or dual-supply (±2.25V to ±6.3V) configuration and is specified from –40°C to +125°C.
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Typ Titel Datum
* Data sheet LOG200 Precision, High-Speed Logarithmic Amplifier With Integrated Photodiode Bias datasheet (Rev. A) PDF | HTML 02 Dez 2024
EVM User's guide LOG200 Evaluation Module User's Guide (Rev. A) PDF | HTML 22 Jan 2024
Certificate LOG200EVM EU Declaration of Conformity (DoC) 30 Jun 2023

Design und Entwicklung

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