MCP6271R Microchip Technology Inc., MCP6271R Datasheet

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MCP6271R

Manufacturer Part Number
MCP6271R
Description
170 ?a, 2 Mhz Rail-to-rail Op Amp
Manufacturer
Microchip Technology Inc.
Datasheet

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Analog and Interface
Analog and Interface Guide – Volume 2
A Compilation of Technical Articles and Design Notes

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MCP6271R Summary of contents

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Analog and Interface Guide – Volume 2 A Compilation of Technical Articles and Design Notes Analog and Interface ...

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Analog and Interface Guide – Volume 2 Table of Contents Contents Techniques To Minimize Noise Looking Forward To Technology Migration ...............................................................................................1 Bypass Capacitors: No Black Magic Here...............................................................................................2 The Debounce Debacle ........................................................................................................................3 ETP-248: Managing Power, Ground And Noise In Microcontroller/Analog Applications ...

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... Techniques To Minimize Noise Looking Forward To Technology Migration By Bonnie C. Baker, Microchip Technology Inc. The industry is laying the groundwork as we speak. The geometries of digital and analog integrated circuit silicon processes are shrinking consequent, IC devices continue to have lower power-supply voltage requirements, silicon areas and prices ...

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... Analog and Interface Guide – Volume 2 Techniques To Minimize Noise Bypass Capacitors: No Black Magic Here By Bonnie C. Baker, Microchip Technology Inc. A basic requirement for all electronic circuits is the inclusion of bypass capacitors (also know as decoupling capacitors). These devices reside across the positive supply to ground, as close to the supply pin of the active device as possible ...

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... Techniques To Minimize Noise The Debounce Debacle By Bonnie C. Baker, Microchip Technology Inc. Mechanical switches play an important role in many microcontroller and microprocessor applications. These types of switches are simple, inexpensive and easy to install. But, the perceived simplicity of mechanical switches can be deceiving if you intend to keep your user happy. For instance, an annoying, ...

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... Analog and Interface Guide – Volume 2 Techniques To Minimize Noise ETP-248: Managing Power, Ground And Noise In Microcontroller/Analog Applications By Bonnie C. Baker and Keith Curtis, Microchip Technology Inc. Microcontroller applications often have low-level sensor signals and moderate power-drive circuitry, in addition to the microcontrollers. A peaceful coexistence with these three extremes requires a careful power and ground distribution design ...

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Techniques To Minimize Noise Figure 2: This is the analog portion of the block diagram in Figure 1. The amplifiers and voltage reference tie into the ADC, and the ADC ties to the microcontroller. Building a 2nd order, low-pass filter ...

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Analog and Interface Guide – Volume 2 Techniques To Minimize Noise Figure 4: This figure shows the data results from the circuit design in Figure 2. The improvement indicates that our low-noise layout strategies are effective. Analog Design Conclusion Concluding ...

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... Anti-Aliasing, Analog Filters for Data Acquisition Systems”, Bonnie C. Baker, AN699, Microchip Technology Inc.p “Interfacing Pressure Sensors to Microchip’s Analog Peripherals”, Bonnie C. Baker, AN695, Microchip Technology Inc. “Layout Tips for 12-Bit A/D Converter Applications”, Bonnie C. Baker, AN688, Microchip Technology Inc. ...

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... Analog and Interface Guide – Volume 2 Charging Lithium Batteries Charging High Capacity Lithium Batteries By George Paparrizos, Microchip Technology Inc. New portable electronic designs are continuously improving system performance. Designers are adding new features, and the power requirements of these systems are increasing along with their performance ...

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Charging Lithium Batteries Voltage Regulated *Optional Wall Cube Reverse Blocking Diode Figure 1: Typical Charging Circuit for High-Capacity Battery Packs. 1750 1700 1650 1600 1550 1500 1450 4.2000 4.1875 4.1750 Charging Voltage (V) Figure 2: Battery Capacity vs. Charging Voltage. ...

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... Analog and Interface Guide – Volume 2 Charging Lithium Batteries Charging Lithium-Ion Batteries: Not All Charging Systems Are Created Equal By Scott Dearborn, Microchip Technology Inc. Introduction Powering today’s portable world poses many challenges for system designers. The use of batteries as a prime power source is on the rise ...

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Charging Lithium Batteries Charging in this manner replenishes a deeply depleted battery in roughly 2 hours. Advanced chargers employ additional safety features. For example the charge is suspended if the cell temperature is outside a specified window, typically ...

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Analog and Interface Guide – Volume 2 Charging Lithium Batteries MA2Q705 R SENSE 5V 10 μ DRV SENSE STAT1 4 TIMER EN 100 kΩ MCP73843 Figure 3: Typical Linear Solution effort ...

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... Data Sheet”, Microchip Technology Inc., DS21893. 0.75 “MCP1630 Data Sheet”, Microchip Technology Inc., DS21896. 0.50 “PIC16F684 Data Sheet”, Microchip Technology Inc., DS41202. 0.25 “PS700 Data Sheet”, Microchip Technology Inc., DS21760. 0.00 120.0 140.0 160.0 Analog and Interface Guide – Volume 2 ...

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... Analog and Interface Guide – Volume 2 Operational Amplifiers Working Your Amplifier Inside The Single-Supply Voltage “Box” By Bonnie C. Baker, Microchip Technology Inc. It may seem easy enough to transfer classical dual-supply, operational-amplifier circuits directly into a single-supply environment. This is true for a few circuits, but now your amplifier output is swinging much closer to the supply rails than before, and your ground reference has disappeared ...

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Operational Amplifiers Non-Inverting Configurations With Gain Built-in The non-inverting configuration is more forgiving than the buffer circuit. With the non-inverting amplifier configuration (Figure 2.), the gain of the circuit is greater than +1V/V. This circuit will send the voltage applied ...

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Analog and Interface Guide – Volume 2 Operational Amplifiers – V SHIFT + – V OUT SHIFT 2 1 Figure single-supply circuit, you need a ...

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Operational Amplifiers The Three-Amp Instrumentation Amplifier The most versatile instrumentation amplifier configuration uses three operational amplifiers in its implementation. This instrumentation amplifier is easy to understand because each of the three operational amplifiers serves a specific function. With this circuit ...

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... Operational Amplifiers Every Amplifier Is Waiting To Oscillate And Every Oscillator Is Waiting To Amplify By Bonnie C. Baker, Microchip Technology Inc. What is operational amplifier (op amp) circuit stability, and how do you know when you are on the “hairy edge”? Typically, there is a feedback system around the op amp to stabilize the variability and reduce the magnitude of the open-loop gain from part to part ...

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Operational Amplifiers The units of the y-axis of the phase plot in Figure 2 (bottom plot) are degrees. You can convert degrees to radians with the following formula: Phase in radians = (Phase in degrees)*2π/360° Phase in degrees can be ...

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Analog and Interface Guide – Volume 2 Operational Amplifiers In Figure 4A and 4B fictitious voltage source equal STABILITY to zero volts used for the 1/β stability analysis. Note that this source is not the ...

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Operational Amplifiers The point of interest in Figure 6 is where the A intersects the 1/β curve. The rate 20 dB/decade of closure between the two curves suggests the phase margin of the system and in turn predicts the stability. ...

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... Analog and Interface Guide – Volume 2 Operational Amplifiers Amplifiers And The SPICE Of Life By Bonnie C. Baker, Microchip Technology Inc. What is operational amplifier circuit stability and how do you know when you are on the hairy edge? Typically, op amps are used with a feedback network in order to reduce the variability of the open loop gain response from part to part ...

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Operational Amplifiers Enhancing the circuit in Figure 1 with the parasitic capacitances of the resistors and amplifier, things aren’t as simple. The 100 kΩ resistor in the feedback loop will have a parallel 0.5 pF (approximately) and the parasitic to ...

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... Analog and Interface Guide – Volume 2 Analog-to-Digital Converters The Number Of Bits vs LSB Errors By Bonnie C. Baker, Microchip Technology Inc. What do the Least Significant Bits (LSB) specifications mean when you are looking at Analog-to-Digital converters (ADC)? A fellow engineer told me that a 12-bit converter, from X manufacturer, had just seven usable bits ...

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... Analog-to-Digital Converters Is Your Converter Accurate? By Bonnie C. Baker, Microchip Technology Inc. What does analog-to-digital converter (ADC) accuracy really mean? You might say that accuracy means the output of the ADC code represents the actual analog-input voltage (minus the quantization error). This makes sense, but are you seeing a ...

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... Analog and Interface Guide – Volume 2 Analog-to-Digital Converters Sometimes Noise Can Be Good By Bonnie C. Baker, Microchip Technology Inc. When I started to write this article someone saw the title and asked, “You don’t have any kids, do you?” Well, I did have the ...

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... Analog-to-Digital Converters Using The Basics For ADC Range Control By Bonnie C. Baker, Microchip Technology Inc. You can use a high-resolution ADC to simplify or eliminate most of the sensitive analog front-end circuitry in your system. I know that this sounds too good to be true, but consider the pressure- sensing example of a single-supply signal path that measures pressure from the real world to a controller ...

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... Analog and Interface Guide – Volume 2 Analog-to-Digital Converters Turning Nyquist Upside Down By Undersampling By Bonnie C. Baker, Microchip Technology Inc. Bravo to Harry Nyquist and Claude Shannon. According to these two gentlemen, in the 1920s, the well-known Nyquist theorem was created stating, “when sampling a signal at discrete intervals, the sampling must be greater than twice the highest frequency of the input signal.” ...

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... The diagram in Figure 1 shows a simple, microcontroller- based, battery-operated system using in the PIC18F1320 Flash microcontroller from Microchip Technology Inc. The PIC18F1320 has features, such as a variety of idle modes and a two-clock start-up capability, that can enhance your low-power strategy. On the hardware side, the industry is continuing to develop ...

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Analog and Interface Guide – Volume 2 Miscellaneous Articles Optimizing the external-peripheral power trade offs is also important. In addition, you will find real power savings when using the external and internal peripherals in concert with the microcontrollers programming capability. ...

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Miscellaneous Articles The is a ~50,000X improvement from the 4 MHz crystal oscillator. From this data, one might summarize the appropriate clock for this type of application is an internal clock. The power consumption of an internal clock is nearly ...

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... Analog and Interface Guide – Volume 2 Miscellaneous Articles Muxing Your Micro With Style By Bonnie C. Baker, Microchip Technology Inc. Connecting external peripherals into your controller or processor is easy enough. You connect a processor I/O pin to each external peripheral. You then have independent control of each peripheral. ...

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... Miscellaneous Articles Riding The Crest Factor Wave By Bonnie C. Baker, Microchip Technology Inc. Crest factor is a unit-less figure of merit that engineers use to describe a signal. You can use crest factors to describe the purity of voltage, current or power waveforms. This figure of merit can describe power signals, machine vibration, or half-wave lamp dimmers, to name a few ...

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... Analog and Interface Guide – Volume 2 Miscellaneous Articles Designing With Low Dropout Regulators In Embedded Applications By Qi Deng, Microchip Technology Inc. Low dropout regulators (LDOs) are a mainstay of embedded microcontroller based applications. For designs where simplicity, flexibility, footprint and cost concerns are primary, LDOs are still the power sources of choice ...

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Analog Design Notes Notes: Analog and Interface Guide – Volume 2 35 ...

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Analog and Interface Guide – Volume 2 Analog Design Notes Notes: 36 ...

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Analog Design Notes Analog and Interface Attributes Robustness MOSFET Drivers lead the industry in latch-up immunity/stability Low Power/Low Voltage Op Amp family with the lowest power for a given gain bandwidth 600 nA/1.4V/10 kHz bandwidth Op Amps 1.8V charge pumps ...

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... China - Xian Tel: 86-29-8833-7250 Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199 The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U ...

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