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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 400kB) Download   E-Mail

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.

Key Features		Applications/Uses
±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)		Analog Signal Processing Medical Instrumentation Photodiode Current Monitoring Portable Instrumentation

Diagram

Typical Operating Circuit

Design Guides

Amplifiers and Sensors (PDF) Fiber (PDF) Communications (PDF)

Reliability Reports

Show FIT data for: MAX4207 Request Reliability Report for: MAX4207

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-4 of 4

MAX4207	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4207ETE			Active	TQFN;16 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4207ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4207ETE+			Active	TQFN;16 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4207ETE+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Related Products

MAX4206 Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range More Like This: View Product Families for Similar Products See All Logarithmic Amplifiers (2 Products)

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