MAX4207
PRODUCTIONPrecision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range
- Part Models
- 2
- 1ku List Price
- Starting From $3.67
Part Details
- ±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)
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.
Applications
- Analog Signal Processing
- Medical Instrumentation
- Photodiode Current Monitoring
- Portable Instrumentation
Documentation
Data Sheet 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX4207ETE+ | 16-LFCSP-4X4X0.75 | ||
| MAX4207ETE+T | 16-LFCSP-4X4X0.75 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| MAX4207ETE+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Logarithmic Transimpedance Amplifiers 1 | ||
| MAX4206 | PRODUCTION | Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range |
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