Microchip: MCP6031DM-PTPLS MCP6031 Photodiode PICtail Plus Demo Board

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Kit Overview

The Microchip MCP6031DM-PTPLSMCP6031DM-PTPLS MCP6031MCP6031 Photodiode PICtail Plus Demo Board demonstrates how to use a transimpedance amplifier, which consists of MCP6031 high precision op amp and external resistors, to convert photo-current (IS) to voltage. The circuit was not calibrated for absolute accuracy.

The RC low-pass filter that is implemented in this circuit can remove the high frequency noise and interference from the signal path prior to the analog-to-digital (A/D) conversion.

The PICmicro on the Explorer 16 Development Board communicates with the MCP6031 Photodiode PICtail Plus Demo Board and completes the analog-to-digital conversion.

The MCP6031MCP6031 /2/3/4 family of operational amplifiers (op amps) operate with a single supply voltage as low as 1.8V, while drawing ultra low quiescent current per amplifier (0.9 μA, typical). This family also has low input offset voltage (±150 μV, maximum) and rail-to-rail input and output operation.

The MCP6031MCP6031/2/3/4 family is unity gain stable and has a gain bandwidth product of 10 kHz (typical). These specs make these op amps appropriate for low frequency applications.

The MCP6031MCP6031/2/3/4 family is designed with Microchip’s advanced CMOS process. All devices are available in the extended temperature range, with a power supply range of 1.8V to 5.5V.

Key Applications: Toll Booth Tags, Wearable Products, Battery Current Monitoring, Sensor Conditioning, Battery Powered

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Technical Documents

Learning Center

Type	Description
User Guide	Microchip: User Guide for MCP6031 Photodiode PICtail Plus Demo Board
User Guide	Microchip: Quick Start Guide to Development Tools
Selection Guide	Microchip: Selection Guide for Analog and Interface Products
Selection Guide	Microchip: Selection Guide for Automotive Products
Datasheet	Microchip: Datasheet for MCP6031/2/3/4 - 0.9 uA High Precision Op Amps
Product Brief	Microchip: Product Brief for PGA, Operational Amplifiers and Comparators Design
Product Brief	Microchip: Product Brief for Signal Chain
Application Note	Microchip: AN951 - Application Note for Amplifying High-Impedence Sensors Photodiode Example

Design Elements

Type	Description
Layout	Microchip: Layout File for MCP6031 Photodiode PICtail Plus Demo Board
Application Library	Microchip: Software Code for MCP6031 Photodiode PICtail Plus Demo Board
Simulation Model	Microchip: SPICE Model for MCP6031/2/3/4 Devices

Video

Kit Features

Key Features for MCP6031DM-PTPLSMCP6031DM-PTPLS Demo Board:

Supports Microchip MCP6031 high precision op amp
Uses a transimpedance amplifier as sensor conditioning circuit
Uses a PIN photodiode (PNZ334) as light detector
Test points for connecting lab equipment

Key Features for MCP6031MCP6031, 0.9 μA, High Precision Op Amps:

Rail-to-Rail Input and Output
Low Offset Voltage: ±150 μV (maximum)
Ultra Low Quiescent Current: 0.9 μA (typical)
Wide Power Supply Voltage: 1.8V to 5.5V
Gain Bandwidth Product: 10 kHz (typical)
Unity Gain Stable
Extended Temperature Range: -40°C to +125°C
No Phase Reversal

Kit Contents

The Microchip MCP6031DM-PTPLSMCP6031DM-PTPLS MCP6031 Photodiode PICtail Plus Demo Board is supplied with below contents:

MCP6031 Photodiode PICtail Plus Demo Board (102-00219)
Important Information “Read First”
Analog and Interface Products Demonstration Boards CD-ROM (DS21912). It contains:
- MCP6031 Photodiode PICtail Plus Demo Board User’s Guide (DS51763)
- Firmware files
- Gerber files