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MAX4207

Features: ±2.7V to ±5.5V Dual-Supply Operation5 Decades of Dynamic Range (10nA to 1mA)Monotonic Over a 1nA to 1mA Range-0.25V/Decade Internally Trimmed Output Scale FactorAdjustable Output Scale FactorAdjustable Output Offset VoltageInternal 10nA to 10µA Reference Current SourceInput Amplifi...

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SeekIC No. : 004410425 Detail

MAX4207: Features: ±2.7V to ±5.5V Dual-Supply Operation5 Decades of Dynamic Range (10nA to 1mA)Monotonic Over a 1nA to 1mA Range-0.25V/Decade Internally Trimmed Output Scale FactorAdjustable Output Scale Fac...

MAX4207 Data Sheet

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Part Number:
MAX4207
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 ±2.7V to ±5.5V Dual-Supply Operation
 5 Decades of Dynamic Range (10nA to 1mA)
 Monotonic Over a 1nA to 1mA Range
 -0.25V/Decade Internally Trimmed Output Scale Factor
Adjustable Output Scale Factor
 Adjustable Output Offset Voltage
 Internal 10nA to 10µA Reference Current Source
 Input Amplifiers Summing Nodes at Ground
 Small 16-Pin Thin QFN Package (4mm x 4mm x 0.8mm)
 -40°C to +85°C Operating Temperature Range
 Evaluation Kit Available (Order MAX4206EVKIT)


Application

Photodiode Current Monitoring
Portable Instrumentation
Medical Instrumentation
Analog Signal Processing


Pinout

Connection Diagram


Specifications

All voltages referenced to GND, unless otherwise noted.)
VCC...........................................................................-0.3V to +6V
VEE............................................................................-6V to +0.3V
Supply Voltage (VCC to VEE) ............................................... +12V
REFVOUT......................................................(VEE - 0.3V) to +3.0V
OSADJ, SCALE, REFISET ..............................(VEE - 0.3V) to +5.5V
REFIIN, LOGIIN ........................................(VEE - 0.3V) to VCMVIN
LOGV1, LOGV2, CMVOUT,
REFIOUT ..........................................(VEE - 0.3V) to (VCC + 0.3V)
CMVIN............................................................(VEE - 0.3V) to +1V
Continuous Current (REFIIN, LOGIIN) ...............................10mA
Continuous Power Dissipation (TA = +70°C)
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) ..1349mW
Operating Temperature Range .......................-40°C to +85°C
Junction Temperature ...................................................+150°C
Storage Temperature Range ........................-65°C to +150°C
Lead Temperature (soldering, 10s) ..............................+300°C


Description

The MAX4207 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 dual ±2.7V to ±5.5V supplies and is capable of measuring five decades of input current across a 10nA to 1mA range.

The MAX4207'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 MAX4207. The output-offset voltage and the adjustable scale factor are also set using external resistors.

The MAX4207 is available in a space-saving 16-pin thin QFN package (4mm x 4mm x 0.8mm), and is specified for operation over the -40°C to +85°C extended temperature range.




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