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MAX4206

Maxim Integrated
Part Number MAX4206
Manufacturer Maxim Integrated
Description Precision Transimpedance Logarithmic Amplifier
Published Mar 26, 2020
Detailed Description MAX4206 EVALUATION KIT AVAILABLE Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range G...
Datasheet PDF File MAX4206 PDF File

MAX4206
MAX4206

Overview
MAX4206 EVALUATION KIT AVAILABLE Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range General Description The MAX4206 logarithmic amplifier computes the log ratio of an input current relative to a reference current (externally or internally generated) and provides a corresponding voltage output with a default 0.
25V/decade scale factor.
The device operates from a single +2.
7V to +11V supply or from dual ±2.
7V to ±5.
5V supplies and is capable of measuring five decades of input current across a 10nA to 1mA range.
The MAX4206’s uncommitted op amp can be used for a variety of functions, including filtering noise, adding offset, and adding additional gain.
A 0.
5V reference is also included to generate an optional precision current reference using an external resistor, which adjusts the log intercept of the MAX4206.
The output-offset voltage and the adjustable scale factor are also set using external resistors.
The MAX4206 is available in a space-saving 16-pin TQFN package (4mm x 4mm x 0.
8mm), and is specified for operation over the -40°C to +85°C extended temperature range.
Applications Photodiode Current Monitoring Portable Instrumentation Medical Instrumentation Analog Signal Processing Pin Configuration TOP VIEW (LEADS ON BOTTOM) CMVIN LOGIIN REFIIN REFIOUT 16 15 14 13 N.
C.
REFVOUT GND VEE 1 2 3 4 MAX4206 12 CMVOUT 11 REFISET 10 VCC 9 N.
C.
5678 LOGV1 OSADJ SCALE LOGV2 THIN QFN Benefits and Features • Single Supply Capability Reduces System Power Supply Requirements • +2.
7V to +11V Single-Supply Operation • Also Supports ±2.
7V to ±5.
5V Dual-Supply Operation if Required • Wide Dynamic Range Supports Most Photodiode Current Measurement Applications • 5 Decades of Dynamic Range (10nA to 1mA) • Monotonic Over a 1nA to 1mA Range • Adjustable Output Scale Factor • 0.
25V/Decade Internally Trimmed Output Scale Factor • Adjustable Output Offset Voltage • Internal 10nA to 10µA Reference Current Source • 0.
5V Input Common-Mode Voltage • S...


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