Datasheet MCP6286 (Microchip)

MCP6286 Low Noise, Low Power Op Amp Features Description
• Low Noise: 5.4 nV/√Hz (typical) The Microchip Technology Inc. MCP6286 operational • Low Quiescent Current: 520 µA (typical) amplifier (op amp) has low noise (5.4 nV/√Hz, typical), • Rail-to-Rail Output low power (520 µA, typical) and rail-to-rail output operation. It is unity gain stable and has a gain • Wide Supply Voltage Range: 2.2V to 5.5V bandwidth product of 3.5 MHz (typical). This device • Gain Bandwidth Product: 3.5 MHz (typical) operates with a single supply voltage as low as 2.2V, • Unity Gain Stable while drawing low quiescent current. These features • Extended Temperature Range: -40°C to +125°C make the product well suited for single-supply, low • No Phase Reversal noise, battery-powered applications. • Small Package The MCP6286 op amp is offered in a space saving SOT-23-5 package. It is designed with Microchip’s
Applications
advanced CMOS process and available in the extended temperature range, with a power supply • Noise Cancellation Headphones range of 2.2V to 5.5V. • Cellular Phones • Analog Filters
Package Types
• Sensor Conditioning
MCP6286
• Portable Instrumentation
SOT-23-5
• Medical Instrumentation V 1 5 V OUT DD • Battery Powered Systems V 2 SS
Design Aids
V 3 4 V IN+ IN– • SPICE Macro Models • FilterLab® Software • Mindi™ Circuit Designer & Simulator • MAPS (Microchip Advanced Part Selector) • Analog Demonstration and Evaluation Boards • Application Notes
Typical Application
C1 47 nF R1 R2 382 kΩ 641 kΩ VIN + C2
MCP6286
VOUT 22 nF – f G = +1 V/V P = 10 Hz
Second-Order, Low-Pass Butterworth Filter
© 2009 Microchip Technology Inc. DS22196A-page 1 Document Outline 1.0 Electrical Characteristics 1.1 Absolute Maximum Ratings † 1.2 Test Circuits FIGURE 1-1: AC and DC Test Circuit for Most Specifications. 2.0 Typical Performance Curves FIGURE 2-1: Input Offset Voltage. FIGURE 2-2: Input Offset Voltage Drift. FIGURE 2-3: Input Offset Voltage vs. Common Mode Input Voltage with VDD = 5.5V. FIGURE 2-4: Input Offset Voltage vs. Common Mode Input Voltage with VDD = 2.2V. FIGURE 2-5: Input Offset Voltage vs. Output Voltage. FIGURE 2-6: Input Offset Voltage vs. Power Supply Voltage with VCM = VCMR_L. FIGURE 2-7: Input Offset Voltage vs. Power Supply Voltage with VCM = VCMR_H. FIGURE 2-8: Input Noise Voltage Density vs. Frequency. FIGURE 2-9: Input Noise Voltage Density vs. Common Mode Input Voltage. FIGURE 2-10: CMRR, PSRR vs. Frequency. FIGURE 2-11: CMRR, PSRR vs. Ambient Temperature. FIGURE 2-12: Common Mode Input Voltage Headroom vs. Ambient Temperature. FIGURE 2-13: Input Bias, Offset Currents vs. Ambient Temperature. FIGURE 2-14: Input Bias Current vs. Common Mode Input Voltage. FIGURE 2-15: Quiescent Current vs Ambient Temperature. FIGURE 2-16: Quiescent Current vs. Power Supply Voltage. FIGURE 2-17: Open-Loop Gain, Phase vs. Frequency. FIGURE 2-18: Gain Bandwidth Product, Phase Margin vs. Common Mode Input Voltage with VDD = 5.5V. FIGURE 2-19: Gain Bandwidth Product, Phase Margin vs. Common Mode Input Voltage with VDD = 2.2V. FIGURE 2-20: Gain Bandwidth Product, Phase Margin vs. Ambient Temperature with VDD = 5.5V. FIGURE 2-21: Gain Bandwidth Product, Phase Margin vs. Ambient Temperature with VDD = 2.2V. FIGURE 2-22: Ouput Short Circuit Current vs. Power Supply Voltage. FIGURE 2-23: Output Voltage Swing vs. Frequency. FIGURE 2-24: Output Voltage Headroom vs. Output Current. FIGURE 2-25: Output Voltage Headroom vs. Ambient Temperature. FIGURE 2-26: Slew Rate vs. Ambient Temperature. FIGURE 2-27: Small Signal Non-Inverting Pulse Response. FIGURE 2-28: Small Signal Inverting Pulse Response. FIGURE 2-29: Large Signal Non-Inverting Pulse Response. FIGURE 2-30: Large Signal Inverting Pulse Response. FIGURE 2-31: The MCP6286 Shows No Phase Reversal. FIGURE 2-32: Closed Loop Output Impedance vs. Frequency. FIGURE 2-33: Measured Input Current vs. Input Voltage (below VSS). 3.0 Pin Descriptions TABLE 3-1: Pin Function Table 3.1 Analog Output 3.2 Analog Inputs 3.3 Power Supply Pins 4.0 Application Information 4.1 Input FIGURE 4-1: Simplified Analog Input ESD Structures. FIGURE 4-2: Protecting the Analog Inputs. 4.2 Rail-to-Rail Output 4.3 Capacitive Loads FIGURE 4-3: Output Resistor, RISO Stabilizes Large Capacitive Loads. FIGURE 4-4: Recommended RISO Values for Capacitive Loads. 4.4 Supply Bypass 4.5 PCB Surface Leakage FIGURE 4-5: Example Guard Ring Layout for Inverting Gain. 4.6 Application Circuits FIGURE 4-6: Second-Order, Low-Pass Butterworth Filter with Sallen-Key Topology. FIGURE 4-7: Second-Order, Low-Pass Butterwork Filter with Multiple-Feedback Topology. FIGURE 4-8: Photovoltaic Mode Detector. FIGURE 4-9: Photoconductive Mode Detector. 5.0 Design Aids 5.1 SPICE Macro Model 5.2 FilterLab® Software 5.3 Mindi™ Circuit Designer & Simulator 5.4 Microchip Advanced Part Selector (MAPS) 5.5 Analog Demonstration and Evaluation Boards 5.6 Application Notes 6.0 Packaging Information 6.1 Package Marking Information