AD648CH vs MCP6V99-E/ST
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Analog Devices Inc. | Microchip Technology |
| Description | DUAL OP AMP | QUAD, ZERO-DRIFT OP AMP, E TEMP |
| Package | Bulk | Tube |
| Series | - | - |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154\", 3.90mm Width) | 14-TSSOP (0.173\", 4.40mm Width) |
| Supplier Device Package | 8-SOIC | 14-TSSOP |
| Current - Supply | 340µA (x2 Channels) | 1.1mA |
| Output Type | - | Rail-to-Rail |
| Number of Circuits | 2 | 4 |
| Voltage - Supply, Single/Dual (±) | ±4.5V ~ 18V | 2.4V ~ 5.5V |
| Current - Output / Channel | 15 mA | 40 mA |
| -3db Bandwidth | 1 MHz | - |
| Amplifier Type | J-FET | Zero-Drift |
| Current - Input Bias | 3 pA | 2 pA |
| Voltage - Input Offset | 300 µV | 25 µV |
| Slew Rate | 1.8V/µs | 9.5V/µs |
| Gain Bandwidth Product | 1 MHz | 10 MHz |
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1. What is the difference between an instrumentation amplifier and an operational amplifier?
Instrumentation amplifiers integrate multi-stage operational amplifiers for precise amplification of differential signals, while operational amplifiers are more versatile and can perform a wide range of analog signal processing tasks. Instrumentation amplifiers have higher input impedance and better common mode rejection.
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2. How do instrumentation amplifiers handle sensor signals?
Instrumentation amplifiers are used to extract low-level signals from sensors (e.g. thermocouples, pressure sensors) to provide high-precision amplification, and are particularly suited to applications that require accurate reading and amplification of weak signals, such as medical and industrial monitoring.
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3. What is a gain adjustable instrumentation amplifier?
Gain-adjustable instrumentation amplifiers allow the gain to be adjusted by external resistors or digital controls to accommodate the dynamic range of different signal sources. These amplifiers are commonly used in a variety of sensor systems.
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4. What are the application scenarios of buffer amplifiers?
Buffer amplifiers are commonly used in signal isolation, impedance matching, voltage follower and power amplification scenarios, and are suitable for protecting weak signal sources from load effects in signal processing chains.
