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ADL5309 - Logarithmic Converter

Datasheet Summary

Description

The ADL5309 contains dual monolithic logarithmic transimpedance amplifiers that are optimized for measuring low-frequency and wide dynamic range optical signal power in fiber optic systems.

Features

  • 188 dB electrical dynamic range and 94 dB optical dynamic range.
  • Dual-channel current inputs for direct optical gain measurements.
  • Accurately trimmed logarithmic response:.
  • Logarithmic slope 200 mV/decade.
  • Logarithmic conformance error ±0.4 dB over temperature.
  • Offset trimmed at 70°C to reduce dark current.
  • Integrated LDO: 26 dB PSRR at 60 Hz and 100 pA input current (VCC = 3.0 V).
  • I2C adjustable:.
  • Photodiode bias voltage.
  • Trade-off between nois.

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Datasheet preview – ADL5309

Datasheet Details

Part number ADL5309
Manufacturer Analog Devices
File Size 1.78 MB
Description Logarithmic Converter
Datasheet download datasheet ADL5309 Datasheet
Additional preview pages of the ADL5309 datasheet.

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Full PDF Text Transcription

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Data Sheet ADL5309 Dual, 188 dB Range, 10 pA to 25 mA, Logarithmic Converter FEATURES ► 188 dB electrical dynamic range and 94 dB optical dynamic range ► Dual-channel current inputs for direct optical gain measurements ► Accurately trimmed logarithmic response: ► Logarithmic slope 200 mV/decade ► Logarithmic conformance error ±0.4 dB over temperature ► Offset trimmed at 70°C to reduce dark current ► Integrated LDO: 26 dB PSRR at 60 Hz and 100 pA input current (VCC = 3.0 V) ► I2C adjustable: ► Photodiode bias voltage ► Trade-off between noise and response time at low input cur- rents ► Integrated 14-bit ADC ► Requires minimal external components ► 2.040 mm × 1.
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