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LOG114AIRGVT

Logarithmic Amplifier, 5 Amplifier, 8 Decades, 375mV / Decade, 1.5 µs, VQFN, 16 Pins

TEXAS INSTRUMENTS LOG114AIRGVT
TEXAS INSTRUMENTS LOG114AIRGVT
TEXAS INSTRUMENTS LOG114AIRGVT

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Manufacturer Part No:
LOG114AIRGVT
Order Code:
3005313

Product Overview

The LOG114AIRGVT is a precision high-speed Logarithmic Amplifier designed for measuring low-level and wide dynamic range currents in communications and lasers. The device computes the logarithm or log-ratio of an input current or voltage relative to a reference current or voltage (logarithmic transimpedance amplifier). High precision is ensured over a wide dynamic range of input signals on either bipolar (±5V) or single (+5V) supply. Special temperature drift compensation circuitry is included on-chip. In log-ratio applications, the signal current may be from a high impedance source such as a photodiode or resistor in series with a low impedance voltage source. The reference current is provided by a resistor in series with a precision internal voltage reference, photo diode or active current source. The output signal at VLOGOUT has a scale factor of 0.375V out per decade of input current, which limits the output so that it fits within a 5 or 10V range.
  • Tiny for high density systems
  • Precision on one supply
  • Fast over eight decades
  • Fully-tested function
  • Stabile over temperature
  • Green product and no Sb/Br

Applications

Signal Processing, Test & Measurement

Product Information

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:
5 Amplifier

:
8 Decades

:
375mV / Decade

:
1.5µs

:
VQFN

:
16Pins

:
± 2.4V to ± 5.5V

:
4mV

:
0°C

:
70°C

:
-

:
MSL 2 - 1 year
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