OPA2202IDGKT vs INA185A1IDRLT
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| Category | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps | Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC OPAMP GP 2 CIRCUIT 8VSSOP | IC CURR SENSE 1 CIRCUIT SOT563 |
| Package | Tape & Reel (TR) | -Reel® |
| Series | - | - |
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | SOT-563, SOT-666 |
| Supplier Device Package | 8-VSSOP | SOT-563 |
| Current - Supply | 580µA (x2 Channels) | 200µA |
| Output Type | - | Rail-to-Rail |
| Number of Circuits | 2 | 1 |
| Voltage - Supply, Single/Dual (±) | 4.5V ~ 36V, ±2.25V ~ 18V | 2.7V ~ 5.5V |
| Current - Output / Channel | 35 mA | - |
| -3db Bandwidth | - | - |
| Amplifier Type | General Purpose | Current Sense |
| Current - Input Bias | 250 pA | 75 µA |
| Voltage - Input Offset | 20 µV | 100 µV |
| Slew Rate | 0.35V/µs | 2V/µs |
| Gain Bandwidth Product | 1 MHz | 350 kHz |
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1. What is an instrumentation amplifier and what is it mainly used for?
An instrumentation amplifier is a high-precision amplifier designed to amplify low-level differential signals with high input impedance and high common mode rejection ratio (CMRR), and is commonly used in scenarios such as medical equipment, sensor signal processing, and industrial measurements.
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2. How to choose the right instrumentation amplifier?
The input common-mode voltage range, gain-bandwidth product, noise performance, power consumption, temperature drift, and common-mode rejection ratio (CMRR) should be considered when selecting an instrumentation amplifier to ensure that it meets the accuracy requirements of a particular application.
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3. 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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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.
