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LOG300

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40MHz logarithmic detector with integrated low-noise amplifier

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Data sheet

LOG300

ACTIVE
Data sheet Order now

Product details

Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 3 Vs (±) (max) (V) 5 Iq (max) (mA) 5 Dynamic range (typ) (dB) 97 Reference type Ext Auxiliary op amps 0 Full-scale output voltage (min) (±V) 0 Full-scale output voltage (max) (±V) 5.85 Conformity error (initial 5 decades) (max) (%) 1 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 1 Operating temperature range (°C) -40 to 125 Rating Catalog
Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 3 Vs (±) (max) (V) 5 Iq (max) (mA) 5 Dynamic range (typ) (dB) 97 Reference type Ext Auxiliary op amps 0 Full-scale output voltage (min) (±V) 0 Full-scale output voltage (max) (±V) 5.85 Conformity error (initial 5 decades) (max) (%) 1 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 1 Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (D) 16 59.4 mm² 9.9 x 6 VQFN (RGT) 16 9 mm² 3 x 3
  • Input range:
    • LNA + log detector: 7µVP to 200mVP
    • Log detector: 20µVP to 1.6VP
  • Adjustable output to input slope and response time.
  • Dynamic range: 98dB with log conformance error (LCE) = ±1dB
  • Signal detection up to 40MHz; even higher with reduced LCE
  • Input frequency detection, zero cross detect
  • Supply: 3V to 5.25V
  • Input range:
    • LNA + log detector: 7µVP to 200mVP
    • Log detector: 20µVP to 1.6VP
  • Adjustable output to input slope and response time.
  • Dynamic range: 98dB with log conformance error (LCE) = ±1dB
  • Signal detection up to 40MHz; even higher with reduced LCE
  • Input frequency detection, zero cross detect
  • Supply: 3V to 5.25V

The LOG300 is an integrated analog front end (AFE) consisting of low-noise amplifier (LNA) and a Log Detector block. This device supports an input frequency range of up-to 40MHz and a typical dynamic range of 98dB. The LOG300 is intended for use in applications that require a wide dynamic range of voltage and signal measurement. The Log Detector block of LOG300 supports both single-ended and differential inputs. The low input noise of the integrated LNA, allows measurement of signals as low as 7µVP. The transient output response can be adjusted by tuning the capacitor connected at the Log_Out pin. The integrated frequency detect feature of LOG300 enables users to extract input signal frequency and zero-crossing information.

The LOG300 is available in a 16-pin SOIC and 16-pin VQFN package. The LOG300 is operational from a 3V to 5.25V supply and over the full ambient temperature range of –40°C to +125°C.

The LOG300 is an integrated analog front end (AFE) consisting of low-noise amplifier (LNA) and a Log Detector block. This device supports an input frequency range of up-to 40MHz and a typical dynamic range of 98dB. The LOG300 is intended for use in applications that require a wide dynamic range of voltage and signal measurement. The Log Detector block of LOG300 supports both single-ended and differential inputs. The low input noise of the integrated LNA, allows measurement of signals as low as 7µVP. The transient output response can be adjusted by tuning the capacitor connected at the Log_Out pin. The integrated frequency detect feature of LOG300 enables users to extract input signal frequency and zero-crossing information.

The LOG300 is available in a 16-pin SOIC and 16-pin VQFN package. The LOG300 is operational from a 3V to 5.25V supply and over the full ambient temperature range of –40°C to +125°C.
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Technical documentation

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Type Title Date
* Data sheet LOG300 40MHz, 98dB Logarithmic Detector With Integrated Low-Noise Amplifier datasheet (Rev. B) PDF | HTML 10 Dec 2024
Application note Ultrasonic Sensing Using LOG Detector Amplifier PDF | HTML 01 Oct 2024
Certificate LOG300DEVM EU Declaration of Conformity (DoC) 24 Sep 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LOG300DEVM — LOG300D evaluation module

<p>The LOG300D evaluation module (EVM) is the LOG300 amplifier in the 16-pin SOIC package. This EVM is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal sources and test instruments through the use of (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

LOG300RGTEVM — LOG300 evaluation module in RGT 16-pin VQFR package

The LOG300 evaluation module is for the LOG300 logarithmic detector with integrated low noise amplifier in the 16-pin VQFR package. This evaluation module is designed to quickly and easily demonstrate the functionality and versatility of the device. The EVM is ready to connect to power (3V to (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

LOG300 TINA-TI Model

SLOM524.ZIP (34 KB) - TINA-TI Spice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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SOIC (D) 16 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian
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