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ANALOG DEVICES ADL5308ACCZ

Logarithmic Amplifier, 1 Amplifiers, 188 dB, 200mV / Decade, 2.4 µs, LGA-EP, 16 Pins

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ANALOG DEVICES ADL5308ACCZ
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Manufacturer Part No:
ADL5308ACCZ
Order Code:
4264774
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Technical Datasheet:
ADL5308ACCZ   Datasheet
ECAD / MCAD
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Product Overview

ADL5308ACCZ is a fast response 188dB range (10pA to 25mA) logarithmic converter. It is a logarithmic transimpedance amplifier optimized for wide dynamic range signal level monitoring in fibre optic systems. It produces an accurate, temperature-compensated output voltage proportional to the logarithm of the ratio between the input current at pin INP, and a reference current. The reference current can either be generated internally or externally provided through the IREF interface (LOG-ratio detection). The logarithmic slope and intercept are both accurately trimmed to a nominal value of 200mV/decade and 10pA respectively. The low-impedance VLOG logarithmic output has enough drive capability to drive a wide range of analogue-to-digital converters (ADCs) and other circuits and its gain can be adjusted by adding a resistor-divider driving the FB pin. It is used in applications such as optical power monitoring, erbium-doped fibre amplifiers (EDFA).
  • Flat frequency response/no undershoot, ratio input for direct optical gain measurements
  • Comparator with adjustable hysteresis and latch enable
  • Adaptive photodiode bias, comparator reference level
  • Fast transient response (IPD stepped from 220µA to 10nA)
  • Fall, rise time is 2.4μs typical at (INP from 220µA to 10nA, measure at 90% and 10% points)
  • Settling time is 3.5μs typical at (VCC = 5.0V, TA = 25°C)
  • Small signal bandwidth is 970KHz typical at (INP = 10nA, VCC = 5.0V, TA = 25°C)
  • Logarithmic slope is 200mV/dec typical at (VCC = 5.0V, TA = 25°C)
  • Logarithmic conformance error is ±0.2dB typical at (VCC = 5.0V, TA = 25°C)
  • Operating temperature range from -40°C to +105°C, 14-lead LGA package

Product Information

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2.4µs

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16Pins

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-V

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-40°C

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105°C

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Technical Documents (1)

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